CN202435022U - Electrified railway traction network microcomputer feed line protection device - Google Patents

Electrified railway traction network microcomputer feed line protection device Download PDF

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Publication number
CN202435022U
CN202435022U CN2012200037977U CN201220003797U CN202435022U CN 202435022 U CN202435022 U CN 202435022U CN 2012200037977 U CN2012200037977 U CN 2012200037977U CN 201220003797 U CN201220003797 U CN 201220003797U CN 202435022 U CN202435022 U CN 202435022U
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circuit
links
arm processor
processor
railway traction
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CN2012200037977U
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张崇文
陈正全
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WUHAN INCOM RAILWAY EQUIPMENT ENGINEERING Co Ltd
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WUHAN INCOM RAILWAY EQUIPMENT ENGINEERING Co Ltd
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Abstract

The utility model relates to an electrified railway traction network microcomputer feed line protection device which comprises an ARM processor, a DSP (digital signal processor), a watchdog circuit, a CMOS (complementary metal oxide semiconductor) dual-port RAM (random access memory), an external clock circuit, an RS-232 interface drive circuit, an A/D (analog/digital) switching circuit, a signal conditioning circuit, a photoelectric isolation input circuit, a photoelectric isolation output circuit, an Ethernet communication interface circuit and a power supply module, wherein the ARM processor is connected with the external clock circuit, the watchdog circuit, the RS-232 interface drive circuit and the CMOS dual-port RAM respectively; the DSP is connected with the CMOS dual-port RAM, the photoelectric isolation input circuit, the photoelectric isolation output circuit and the A/D switching circuit respectively; the A/D switching circuit is connected with the signal conditioning circuit; the ARM processor is connected with the outside through the Ethernet communication interface circuit; and the power supply module supplies power to the components of the device. The device provided by the utility model improves the reliability of data processing and the communication rate with the external system, and is favorable for realizing subsequent improvement of feed line protection.

Description

A kind of electric railway traction net microcomputer feeder protection equipment
Technical field
The utility model relates to the railway electrification field, relates in particular to the protective device of Traction Substation of Electric Railway, switching station, subregion booth feeder line.
Background technology
Along with the enforcement of the medium-term and long-term railway network planning of China, the railway construction of China has welcome new round peak, and especially high-speed railway becomes the emphasis of railway construction.The safe operation of high-speed railway be unable to do without the protection of tractive power supply system; It can satisfy the demand of train operation under the electric power system normal operating condition; When electric power system breaks down, can excise fault rapidly, ensure train, equipment and passenger's personal safety.The feeder line protection is a significant element of electric power system protection; Because the condition of tractive power supply system feeder line work is more complicated than power network, abominable, such feeder line is the point that breaks down the most easily in the tractive power supply system, how to improve reliability, the rapidity of feeder line protection; Make when the tractive power supply system failed because and can accurately excise fault; Reduce coverage, and reply power supply as early as possible through circuit reclosing or input stand-by power supply, be the emphasis of studying both at home and abroad always.
At present; The manufacturer of development and production electric railway traction net microcomputer feeder protection equipment is more on the domestic and international market; The general chip microprocessor structure that adopts is adjudicated calculation function with the processing of clock control, keyboard input, demonstration output, PERCOM peripheral communication and electric signal and is integrated on the process chip, and the operational efficiency of device is low; Quick sampling, the filtering accuracy of the on-the-spot operation of traction net feeder line electric parameter are not high; Install the internal process complex structure simultaneously, poor stability is unfavorable for the realization of internal processes and the improvement of protection algorithm.In addition, existing feeder protection equipment generally adopts bus-type interface realization transformer station level communications such as RS-485, network configuration other than ring type or star, and when the communications cable that links to each other with node broke down, protective device reduced the reliability of locomotive operation with ineffective.
Summary of the invention
The utility model provides a kind of electric railway traction net microcomputer feeder protection equipment, adopts ARM to add the bi-processor architecture of DSP, improved data processing reliability and with the traffic rate of external system, the subsequent improved that helps protection for feed line realizes.
The technical scheme of the utility model is:
A kind of electric railway traction net microcomputer feeder protection equipment; Comprise arm processor, dsp processor, watchdog circuit, CMOS dual port RAM, outer clock circuit, RS-232 interface drive circuit, A/D change-over circuit, signal conditioning circuit, photoelectricity isolation input circuit, photoelectricity spacing output circuit, ethernet interface circuit, supply module; It is characterized in that: arm processor links to each other with outer clock circuit, watchdog circuit, RS-232 interface drive circuit, CMOS dual port RAM respectively; Dsp processor links to each other with CMOS dual port RAM, photoelectricity isolation input circuit, photoelectricity spacing output circuit, A/D change-over circuit respectively; The A/D change-over circuit links to each other with signal conditioning circuit; Arm processor is connected with outside through the ethernet interface circuit, and supply module is each device power supply of this device;
The level communication of arm processor computing transformer station, system clock reference, liquid crystal display and keyboard entry function;
Functions such as the collection of feeder line data in the dsp processor computing transformer station, conditioning, analog-to-digital conversion, analytical calculation, various protection algorithm, logic determines output and fault filtering;
Watchdog circuit is regulated the electrification reset time through the logic level of external pin;
Arm processor receives the instruction from transformer station's level or higher level's scheduling through the ethernet interface circuit, is organized into message to the real time information of equipment and feeds back to transformer station's level or higher level's scheduling;
Arm processor links to each other with dsp processor through the CMOS dual port RAM, and the CMOS dual port RAM is used for the full asynchronous exchange of data between arm processor and the dsp processor;
Outer clock circuit is the reference clock of device;
The RS-232 interface drive circuit can set initialization adjust numerical value with carry out system maintenance;
Signal conditioning circuit carries out high-low pressure conversion and frequency-tracking to the electric current and the voltage analog signal of feeder line;
The A/D change-over circuit carries out high position sampling to the signal after nursing one's health;
Photoelectricity is isolated input circuit and is used for electrical isolation between input switch and the said dsp processor, and the photoelectricity spacing output circuit is used for the electrical isolation between external drive circuit and the dsp processor.
The utility model also comprises 2 FLASH memories, and a FLASH memory links to each other with dsp processor, and another FLASH memory links to each other with arm processor, is respectively applied for arm processor working procedure and the working procedure of dsp processor after the store compiled.
The utility model also comprises 2 synchronous DRAM SDRAM; A synchronous DRAM SDRAM links to each other with DSP; Another synchronous DRAM SDRAM links to each other with arm processor, is respectively applied for the big capacity ephemeral data in storage arm processor and the dsp processor computational process.
Described supply module adopts the linear power supply chip, IO voltage 3.3V is provided, core voltage 1.2V.
The utility model also comprises LCD MODULE, and LCD MODULE links to each other with arm processor, and LCD MODULE selects the instant-plugging accessory, possesses backlight and temperature compensation function.
The utility model also comprises keyboard, and keyboard links to each other with arm processor.The optional instant-plugging accessory of keyboard is made up of key board unit, eight phase inverter buffers, latch and pull-up resistor.
The utility model improved data processing reliability and with the traffic rate of external system, the subsequent improved that helps protection for feed line realizes.
Description of drawings
Fig. 1 is the structured flowchart of the utility model.
Fig. 2 is the internal work flow process figure of the arm processor of the utility model.
Fig. 3 is the internal work flow process figure of the dsp processor of the utility model.
Embodiment
Further specify below in conjunction with accompanying drawing and embodiment technical scheme the utility model.
In the following description, provided some detail so that making much of to a plurality of embodiment of the utility model.But, those skilled in the art can know do not have these details also can realize the utility model.In other cases, there are not detailed expression or description and the relevant known configurations of equipment such as computer, transmission medium, measuring equipment, recording equipment, to avoid unnecessary interference description to the utility model embodiment.
Only if content needs, otherwise in specification and claims, word " comprises " and change the meaning of " comprising " of being understood as that evolution, promptly " includes, but are not limited to ".
As shown in Figure 1; The utility model comprises arm processor, dsp processor, watchdog circuit, CMOS dual port RAM, outer clock circuit, RS-232 interface drive circuit, A/D change-over circuit, signal conditioning circuit, photoelectricity isolation input circuit, photoelectricity spacing output circuit, ethernet interface circuit, supply module; It is characterized in that: arm processor links to each other with outer clock circuit, watchdog circuit, RS-232 interface drive circuit, CMOS dual port RAM respectively; Dsp processor links to each other with CMOS dual port RAM, photoelectricity isolation input circuit, photoelectricity spacing output circuit, A/D change-over circuit respectively; The A/D change-over circuit links to each other with signal conditioning circuit; Arm processor is connected with outside through the ethernet interface circuit, and supply module is each device power supply of this device;
Arm processor is used for functions such as the level communication of computing transformer station, system clock reference, liquid crystal display and keyboard input, in the present embodiment, and the S3C4510B that selects for use Samsung to produce;
Dsp processor is handled the functions such as collection, conditioning, analog-to-digital conversion, analytical calculation, various protection algorithm, logic determines output and fault filtering of feeder line data in the transformer station, in the present embodiment, and the TMS320C6713 that selects for use TI company to produce;
The watchdog circuit that links to each other with said arm processor is regulated the electrification reset time through the logic level of external pin, in the present embodiment, and the MAX6374 that the main processing chip of selecting for use is produced for MAXIM company;
The ethernet interface circuit that links to each other with said arm processor; Reception is from the instruction of transformer station's level or higher level's scheduling; Be organized into message to the real time information of equipment and feed back to transformer station's level or higher level's scheduling, in the present embodiment, the DM9000 that the main processing chip of selecting for use is produced for ETC company;
The CMOS dual port RAM that links to each other with said arm processor; Realize the full asynchronous exchange of data between said arm processor and the dsp processor, comprising: 2 cover I/O ports, competition ruling circuit, wherein; The I/O port connects said arm processor and dsp processor respectively, is used for full asynchronous read and write operation; Competition ruling circuit control different I/O port is to the access conflict of RAM; In the present embodiment, the IDT7132 that the RAM that selects for use produces for IDT company;
The RS-232 interface circuit that links to each other with said arm processor is responsible for the data interaction with host computer, can set initialization adjust numerical value with carry out system maintenance, in the present embodiment, the main processing chip of selecting for use is the MAX232 that MAXIM company produces;
The signal conditioning circuit that links to each other with said dsp processor through the conversion of AC sampling tracking frequency, is the low-voltage analog signal of 0~5V with electric current, the voltage transformation of current transformer, voltage transformer secondary side;
The analog to digital conversion circuit that links to each other with signal conditioning circuit with said dsp processor; Analog signal to this signal conditioning circuit input is carried out the segmentation digital sample; And data are imported dsp processor; To carry out fast Fourier transform and filtering, in the present embodiment, the MAX125 that the main processing chip of selecting for use is produced for MAXIM company;
Photoelectricity is isolated input circuit and is used for electrical isolation between input switch and the said dsp processor, and the photoelectricity spacing output circuit is used for the electrical isolation between external drive circuit and the dsp processor;
Outer clock circuit with said arm processor links to each other with dsp processor is the reference clock of device, in the present embodiment, and the SiT8002 that the active crystal oscillator of selecting for use is produced for SITIME company, frequency 50MHz;
Supply module adopts the linear power supply chip, and IO voltage 3.3V is provided, core voltage 1.2V, in the present embodiment, the TPS54616 that said linear power supply chip is produced for TI company.
With 2 FLASH memories that said arm processor and dsp processor link to each other respectively, be respectively applied for arm processor working procedure and DS P processor working procedure after the store compiled, in the present embodiment, the AM29LV800B that selects for use AMD to produce;
With 2 SDRAM memories that said arm processor and dsp processor link to each other respectively, be respectively applied for the big capacity ephemeral data in storage arm processor and the dsp processor computational process, in the present embodiment, the IS42S16400 that selects for use ISSI company to produce;
With the LCD MODULE that said arm processor links to each other, optional instant-plugging accessory comprises hypotactic 2 dot matrix graphic LCD drivers, possesses backlight and temperature compensation function;
The keyboard that links to each other with said arm processor; Optional instant-plugging accessory; Be used for the operating state of setting device and the operating state of inquiry feeder line, constitute by key board unit, eight phase inverter buffers, latch and pull-up resistor, in the present embodiment; The 74LS240 that said eight phase inverter buffers are produced for CET company, the 74LS273 that said latch is produced for CET company.
And as shown in Figure 2, the workflow of said arm processor comprises: power-up initializing; Start embedded OS, in the present embodiment, the operating system of selecting for use is uClinux; Start the protection for feed line application program.
Wherein, the function of said protection for feed line application program comprises: content adjustment self operating state according to the keyboard input perhaps sends to dual port RAM and supplies DSP to read; Read the feeder line electric data in the dual port RAM through clock property interrupt cycle, utilize the ethernet communication protocol in the operating system to send to transformer station's level or higher level's scheduling with feeder line is electric; Receive higher level's dispatch command,, instruction is sent to dual port RAM supply DSP to read, perhaps adjust self operating state according to the content of dispatch command; Above-mentioned data are delivered to LCD to be shown.
And as shown in Figure 3, the workflow of said dsp processor comprises: hardware initialization, empty RAM, and register is set, enable external interrupt and clock and interrupt; Write the timing sampling time; Utilize the trapped inside module of signal conditioning circuit, realize AC sampling, follow current and electric voltage frequency change; The harmonic wave Fourier transform is calculated the high order harmonic component in electric current and the voltage; Adopt the mode of phase transformation burst to protect starting component; The protection for feed line algorithm is implemented.
It should be noted last that; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the spirit and the scope of the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.

Claims (7)

1. electric railway traction net microcomputer feeder protection equipment; Comprise: arm processor, dsp processor, watchdog circuit, CMOS dual port RAM, outer clock circuit, RS-232 interface drive circuit, A/D change-over circuit, signal conditioning circuit, photoelectricity are isolated input circuit, photoelectricity spacing output circuit, ethernet interface circuit, supply module; It is characterized in that: arm processor links to each other with outer clock circuit, watchdog circuit, RS-232 interface drive circuit, CMOS dual port RAM respectively; Dsp processor links to each other with CMOS dual port RAM, photoelectricity isolation input circuit, photoelectricity spacing output circuit, A/D change-over circuit respectively; The A/D change-over circuit links to each other with signal conditioning circuit; Arm processor is connected with outside through the ethernet interface circuit, and supply module is each device power supply of this device.
2. electric railway traction net microcomputer feeder protection equipment according to claim 1 is characterized in that: also comprise 2 FLASH memories, a FLASH memory links to each other with dsp processor, and another FLASH memory links to each other with arm processor.
3. electric railway traction net microcomputer feeder protection equipment according to claim 1; It is characterized in that: also comprise 2 synchronous DRAM SDRAM; A synchronous DRAM SDRAM links to each other with DSP, and another synchronous DRAM SDRAM links to each other with arm processor.
4. electric railway traction net microcomputer feeder protection equipment according to claim 1 is characterized in that: described supply module adopts the linear power supply chip, IO voltage 3.3V is provided, core voltage 1.2V.
5. according to the described electric railway traction net of one of claim 1-4 microcomputer feeder protection equipment, it is characterized in that: also comprise LCD MODULE, LCD MODULE links to each other with arm processor.
6. electric railway traction net microcomputer feeder protection equipment according to claim 5, it is characterized in that: described LCD MODULE selects the instant-plugging accessory.
7. according to the described electric railway traction net of one of claim 1-4 microcomputer feeder protection equipment, it is characterized in that: also comprise keyboard, keyboard links to each other with arm processor.
CN2012200037977U 2012-01-06 2012-01-06 Electrified railway traction network microcomputer feed line protection device Active CN202435022U (en)

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Application Number Priority Date Filing Date Title
CN2012200037977U CN202435022U (en) 2012-01-06 2012-01-06 Electrified railway traction network microcomputer feed line protection device

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Application Number Priority Date Filing Date Title
CN2012200037977U CN202435022U (en) 2012-01-06 2012-01-06 Electrified railway traction network microcomputer feed line protection device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106160233A (en) * 2016-08-25 2016-11-23 镇江大全赛雪龙牵引电气有限公司 A kind of modularized dc tractive power supply system DC side monitoring and protection system
CN106452647A (en) * 2016-11-07 2017-02-22 北京必创科技股份有限公司 Radio frequency device and wireless sensor network system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106160233A (en) * 2016-08-25 2016-11-23 镇江大全赛雪龙牵引电气有限公司 A kind of modularized dc tractive power supply system DC side monitoring and protection system
CN106452647A (en) * 2016-11-07 2017-02-22 北京必创科技股份有限公司 Radio frequency device and wireless sensor network system

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