CN101477716B - Energy consumption recording instrument for MVB interface type locomotive - Google Patents

Abstract

The invention discloses an energy consumption recording instrument used for an MVB interface type locomotive, and a method for controlling the energy consumption recording instrument. The energy consumption recording instrument is based on a TCN-MVB network system and comprises a main controller module, an MVB protocol control unit, an MVB signal interface unit, a data display control unit and a power supply unit. The method comprises the following steps: an MVB signal is received by the MVB signal interface unit; and the signal, after being stored and converted by the MVB protocol control module and the main controller module, is transmitted to the data display control unit, so that the instrument serves the function of recording and displaying energy consumption.

Description

MVB interface type locomotive energy consumption recording instrument

Technical field

The present invention relates to locomotive network uses.

Background technology

The existing method that is used for the locomotive energy consumption survey record is based on traditional control mode at present, voltage and current value by voltage, current sensor receiving equipment, then these values are delivered in the cab by the direct-connected mode of rigid line, and link to each other, thereby show or record energy consumption situation with instrument.Because this method need insert each equipment respectively, how required the more wiring amount of equipment be big more, so the survey of building can system complex, making system constitute cost increases, the reliability reduction, and operation, maintenance and service work are also loaded down with trivial details relatively.Nowadays a lot of locomotives have been realized networking in control, and the electric current and voltage information that the record energy consumption need be measured is also the same as with other data transmission over networks, how to use a kind of equipment from the network of having put up, directly to obtain relevant information, thereby the problem of avoiding traditional metering system to bring becomes the new direction of energy consumption measurement.

Summary of the invention

In view of existing problem in the above-mentioned prior art, MVB interface type locomotive energy consumption recording instrument of the present invention just is being based on the energy consumption recording unit of the network system-TCN standard network bus of railway territory.It directly takes out electric current and voltage information from network and carries out record, thereby abandoned traditional sensor-based control mode, having solved equipment needed thereby is many, the wiring amount is big more, build survey can system complex, make system constitute problems such as cost increase, reliability reduction, operation, maintenance and service work be also loaded down with trivial details relatively.MVB interface type locomotive of the present invention comprises main controller module, MVB agreement control module, MVB signal interface unit, data presentation control module and power supply unit with energy consumption recording instrument.Described MVB signal interface unit links to each other with the I/O pin of MVB agreement control module by ICA, ICB, OC, SF pin.Address wire MVBA0-MVBA2, the MVBA12-MVBA15 of described MVB agreement control module links to each other with the P6 mouth of main controller module, data line MVBD0-MVBD7 links to each other with the P1 mouth of main controller module, control line MVB-ctl1-MVB-ctl3 links to each other with the P2 mouth of main controller module, read-write control signal/WE ,/RD and RSTN be connected to 50,91, No. 92 pins of main controller module.The D0-D7 pin of described data presentation control module links to each other with the P7 mouth data line of main controller module, and the LCDs supervisory keyboard of data presentation control module links to each other with the P5 mouth of main controller module.Described power supply unit partly general+5V voltage is sent to the VCC energization pins of MVB signal interface unit, data presentation control module, with+3.3V voltage be sent to main controller module+the 3.3V energization pins, + 2.5V voltage is sent to MVB agreement control module energization pins, wherein, the reference of power supply unit ground output GND links to each other with all GND pins.Described MVB signal is input to MVB protocol controller module from the MVB bus by the MVB signal interface unit, signal is sent into main controller module after treatment again, data are resolved in main controller module, handle, are stored, and last form with 8 parallel port data sends to the data presentation control module and shows on the LCDs supervisory keyboard.Main controller module of the present invention comprises main control chip C8051F040.Described MVB signal interface unit comprises isolating chip HCPL0661, high speed 485 signal transceiver MAX3088, interface protection chip LCDA05.Described MVB agreement control module comprises XC2S50-5TQ1441.Described data presentation control module comprises LCM12864ZK type LCDs and supervisory keyboard.Described power supply unit partly comprises+5V isolating chip B0505T, power conversion chip AS1117M3-3.3, power conversion chip MIC5207.MVB signal interface unit of the present invention comprises two-way MVB receiving circuit; wherein 1 of the MAX3088 chip, 3,4 pins link to each other with 6, No. 7 pins of isolating chip; 2, No. 3 pins of isolating chip link to each other with MVB agreement control module, and the protection chip is received respectively on the signal wire of interface.

MVB interface type locomotive energy consumption record of the present invention, its control procedure comprises the step of system initialization and MVB port initialization, it is characterized in that also comprising the steps:

(1) MVB application configuration;

(2) read voltage, current information;

(3) calculate energy consumption;

(4) show canned data;

(5) judge have, no key information, and in following step, select:

(6) no key information, the retrieval system initialization;

(7) key information is arranged, carry out keyboard and handle, and the retrieval system initialization.

The TCN technology is the main flow railway dedicated network of a kind of IEC61375-1 of meeting " Train Communication Network " technology, be a kind of special network, become one of TCN of a kind of a large amount of high reliability of using at home and abroad at present for the design of industry spot such as railway.

MVB is a kind of formation of TCN network, i.e. MVB (MVB), and this is a kind of being mainly used in the serial data communications busses between the interconnect equipment that interoperability and interchangeability requires is arranged.The data communication bus of vehicle interior (MVB) is the suggested design of TCN.It has following characteristics:

● be a kind of serial data communications busses, be mainly used in the vehicle interior communication of fixing marshalling

● transfer rate is fixed as 1.5Mbit/s

● under the situation that does not add any repeater, longer transmission distance determines its physical medium

● adopt the Differential Manchester Encoding mode

● medium distributes the employing master-slave mode

● adopt two-wire physically-redundant mode

● the process data transmission basic cycle is the fastest to be 1ms

● 8 or two 8 is the CRC check algorithm

MVB interface type locomotive of the present invention just is being based on TCN standard network bus with energy consumption recording instrument and is using.This energy consumption recording instrument has been broken away from traditional mode sensor, just can finish survey and can work as long as equipment inserted in the TCN standard network by receiving voltage, electric current and locomotive operating mode that other node device sends, easy for installation, simple to operate, using reliably, is the new product that arises at the historic moment under the overall situation of Train Control networking.

The purpose of this invention is to provide a kind of MVB interface type locomotive energy consumption recording instrument based on the TCN-MVB network system.When the MVB network application is on locomotive, nearly all data all are to transmit by network, the information such as electric current and voltage of locomotive operation also send to MVB online (this process is independently finished by network) by the master controller of network system in this process, and equipment then directly reads electric current and voltage information from network and carries out record.Total system comprises hardware and software two parts.

The effect of hardware mainly is for each modular circuit provides physical connection, receives or holds back voltage, the current signal in the MVB bus and be responsible for signal physical transfer process, provides working power for equipment simultaneously.

The effect of software is according to the rig-site utilization requirement, and the data of sending in the main controller module are carried out treatment conversion.Handle the keyboard scan work of man-machine interface simultaneously

Description of drawings

The present invention has eight accompanying drawings, wherein:

Fig. 1 system architecture diagram;

Fig. 2 hardware implementations;

Fig. 3 software control flow chart;

Fig. 4 is main control module C8051F040 chip circuit figure;

Fig. 5 is a MVB agreement control module circuit diagram;

Fig. 6 is a MVB signal acquisition module circuit diagram;

Fig. 7 is data presentation control unit circuit figure;

Fig. 8 is the power supply unit circuit diagram.

Among the figure: 1, MVB signal interface unit 2, MVB agreement control module 3, main controller module 4, data presentation control module 5, power supply unit.

Embodiment

Specific embodiments of the invention are shown in accompanying drawing 1 system architecture diagram, and the MVB interface type locomotive is formed with the hardware of energy consumption recording instrument and comprised main controller module 3, MVB agreement control module 2, MVB signal interface unit 1, data presentation control module 4 and power supply unit 5.Hardware implementations as shown in Figure 2, system comprises two-way MVB signal interface unit 1, can guarantee the reliable and stable of MVB signal transmission.Every road MVB signal interface unit 1 will be come in from the differential signal collection of MVB network by 6,7 pins of MAX3088, convert MVB agreement control module 2 discernible manchester encoded signals to after, be connected to MVB agreement control module 2 by photo-coupler.MVB agreement control module 2 is carried out the exchange of data with main controller module 3 by data line, address wire and the control line that interconnects, and the data after main controller module 3 will be changed are passed in the D0-D7 data pin of data presentation control module 4 by the P7 oral instructions.The S1-S5 key control display unit that links to each other with the two /RST, PSB, SCLK, R/W and CS signal and can be by the lightness of T0 knob controlling display screen.

Fig. 4-the 8th, the circuit diagram of each ingredient.

MVB bus protection circuit in the MVB signal interface unit 1 is selected TVS array device LCDA05 for use, and each chip can play a protective role to two HW High Way, owing to itself be bilateral device, all can use on the circuit of the positive negative level of transmission.It has the characteristics of low-leakage current and low clamping voltage; also show lower capacitive for high speed signal; be well suited in the MVB network, using; realization is carried out the function that " overvoltage ", " overcurrent ", " short circuit " etc. are protected to the signal that inputs or outputs of MVB, and then signal is sent into bus MVB bus driver.

The present invention selects for use MAX3088 as the MVB bus driver, it is the high-speed transceiver that is used for RS485 communication, inside has fail-safe circuit, ensured and when receiving end open circuit or short circuit, had the characteristic of high-impedance state, the driving conversion ratio of MAX3088 is not limited, and transfer rate can reach 10Mbps.The digital signal that MVB agreement control module 2 is sent here can be converted to standard MVB bus efficiency signal; then this signal is sent into network by the bus protection circuit; the perhaps MVB bus network signal of sending here through the bus protection circuit, the MVB level signal that converts standard to is sent into MVB agreement control module 2.

The present invention adopts the ESD mode to use optocoupler HCPL0661 to isolate, and has improved the stability and the security of node.Buffer circuit is to send into MVB agreement control module 2 after the level signal after the conversion of MVB bus driver is isolated through electricity (magnetic), or the level signal that MVB agreement control module 2 is sent is delivered to the MVB bus driver after electricity (magnetic) is isolated, thereby realize the electrical isolation of external circuit and interior circuit, improve the antijamming capability of system.

MVB agreement control module 2 is MVB server devices, it is responsible for the various information of MVB bus are decoded by the TCN standard agreement, and deposit relevant information in internal RAM, realize simultaneously and the communication interface function of main processor unit that this function is realized by FPGA.

C8051F040 in the main controller module 3 is the core of entire equipment, has finished the function control of energy consumption record.C8051F040 is fully-integrated mixed signal SOC (system on a chip) type MCU, has 64 digital I/O pins, adopts the patent CIP-51 microcontroller kernel of Silicon Lab in the sheet.Each MCU can be in industrial temperature scope (45 ℃ to+85 ℃) work, and operating voltage is 2.7～3.6V.Because the application need of energy consumption recording instrument, require equipment to have the function of storage data, when the temporary transient power down of system, the FLASH storer can also be used for non-volatile data storage except being used for program code stored.This has just effectively guaranteed the safe and reliable of application.

Data presentation control module 4 has adopted LCM12864ZK type LCDs, and its font ROM includes the letter character font of 8192 Chinese fonts of 16*16 point and 128 16*8 half-breadths; Power operation wide ranges (2.7V to 5.5V), low power dissipation design can satisfy the power saving requirement of product; Simultaneously with the connection interface of micro controller such as single-chip microcomputer (three kinds of patterns: parallel 8/4, serial 3 lines/2 lines) flexibly.

Power supply unit 5 parts of system comprise several power supply chips and holding circuit, are responsible for the power supply of total system.The electric pressure that produces comprise isolation+5V voltage ,+3.3V voltage and+2.5V voltage.

The software control flow process as shown in Figure 3.

Claims (4)

1. MVB interface type locomotive energy consumption recording instrument, described energy consumption recording instrument comprises main controller module (3), MVB agreement control module (2), MVB signal interface unit (1), data presentation control module (4) and power supply unit (5), it is characterized in that MVB signal interface unit (1) links to each other with the I/O pin of MVB agreement control module (2) by ICA, ICB, OC, SF pin; Address wire MVBA0-MVBA2, the MVBA12-MVBA15 of described MVB agreement control module (2) links to each other with the P6 mouth of main controller module (3), data line MVBD0-MVBD7 links to each other with the P1 mouth of main controller module (3), control line MVBctl1-MVBctl3 links to each other with the P2 mouth of main controller module (3), read-write control signal/WE ,/RD and RSTN be connected to 50,91, No. 92 pins of main controller module (3); The D0-D7 pin of described data presentation control module (4) links to each other with the P7 mouth data line of main controller module (3), and the LCDs supervisory keyboard of data presentation control module (4) links to each other with the P5 mouth of main controller module (3); Described power supply unit (5) part general+5V voltage is sent to the VCC energization pins of MVB signal interface unit (1), data presentation control module (4), general+3.3V voltage is sent to main controller module (3)+3.3V energization pins, + 2.5V voltage is sent to MVB agreement control module (2) energization pins, wherein, the reference of power supply unit (5) ground output GND links to each other with all GND pins; Described MVB signal is input to MVB protocol controller module (2) from the MVB bus by MVB signal interface unit (1), signal is sent into main controller module (3) after treatment again, data are resolved, handle, are stored in main controller module (3), and last form with 8 parallel port data sends to data presentation control module (4) and shows on the LCDs supervisory keyboard.

2. MVB interface type locomotive energy consumption recording instrument according to claim 1 is characterized in that described main controller module (3) comprises main control chip C8051F040; Described MVB signal interface unit (1) comprises isolating chip HCPL0661, high speed 485 signal transceiver MAX3088, interface protection chip LCDA05; Described MVB agreement control module (2) comprises XC2S50-5TQ1441; Described data presentation control module (4) comprises LCM12864ZK type LCDs and supervisory keyboard; Described power supply unit (5) part comprises+5V isolating chip B0505T power conversion chip AS1117M3-3.3, power conversion chip MIC5207.

3. MVB interface type locomotive energy consumption recording instrument according to claim 1; it is characterized in that described MVB signal interface unit (1) comprises two-way MVB receiving circuit; wherein 1 of the MAX3088 chip, 3,4 pins link to each other with 6, No. 7 pins of isolating chip; 2, No. 3 pins of isolating chip link to each other with MVB agreement control module (2), and the protection chip is received respectively on the signal wire of interface.

4. MVB interface type locomotive energy consumption recording instrument according to claim 1, its control procedure comprises the step of system initialization and MVB port initialization, it is characterized in that also comprising the steps:

(1) MVB application configuration;

(2) read voltage, current information;

(3) calculate energy consumption;

(4) show canned data;

(5) judge have, no key information, and in following step, select:

(6) no key information, the retrieval system initialization;

(7) key information is arranged, carry out keyboard and handle, and the retrieval system initialization.

Images