CN202421402U

CN202421402U - Fault detection recording device and fault detection system for locomotive circuit

Info

Publication number: CN202421402U
Application number: CN2011205753254U
Authority: CN
Inventors: 王磊; 马君; 苏安社
Original assignee: Beijing CED Railway Electric Tech Co Ltd
Current assignee: Beijing CRRC CED Railway Electric Tech Co Ltd
Priority date: 2011-12-31
Filing date: 2011-12-31
Publication date: 2012-09-05
Anticipated expiration: 2021-12-31

Abstract

The utility model discloses a fault detection recording device and a fault detection system for a locomotive circuit. The fault detection recording device comprises a CAN (Controller Area Network) interface module for receiving a CAN bus signal, a data storage module for storing CAN bus detection data, a main control module for processing a CAN bus signal into the CAN bus detection data and controlling the data storage module to store and a data output external interface for outputting the CAN bus detection data in the data storage module, as well as a power converting module which is used for converting power energy in a power supply circuit into stable current and supplying power to the CAN interface module, the data storage module, the main control module and the data output external interface. According to the embodiment of the utility model, the distributed fault detection of different test points on a CAN bus in a locomotive circuit system can be realized; and detection data of each test point are saved in time, so that integral investigation and analysis of the detection data for all test points are facilitated and further the safe operation of a power locomotive is ensured.

Description

A kind of locomotive circuit fault detect pen recorder and fault detection system

Technical field

The utility model relates to locomotive circuit fault detect field, relates in particular to a kind of locomotive circuit fault detect pen recorder and fault detection system.

Background technology

For electric locomotive, the locomotive circuit system failure possibly directly cause electric locomotive generation security incident, and therefore the locomotive circuit system is carried out fault detect all is the important means that guarantees traffic safety all the time.In the locomotive circuit system, be to carry out data transmission mostly with CAN bus (CAN is the abbreviation of Controller Area Network, is translated into controller local area network), therefore the detection to the CAN bus is the core of locomotive circuit fault detect.All the time; The locomotive circuit system is carried out the most mode that adopts centralized detection of device of fault detect; Promptly in the compartment, lay a large amount of test cables; And with these test cables respectively with the locomotive circuit system in different test points on the CAN bus (these test points can be selected according to the side circuit wiring situation of locomotive circuit system, because this belongs to common practise for the different technologies personnel of this area, and to select test point be not the application's summary of the invention yet; So do not giving unnecessary details in the present specification) be connected; Failure detector can obtain the detection signal of each test point simultaneously, and judges whether outlet fault of locomotive circuit system according to these detection signals, perhaps judges the locomotive circuit system and where breaks down.But; Equipment in the electric locomotive is more, the space is limited; And be not suitable for installing a large amount of test cables; And these test cables are when long Distance Transmission test signal, and owing to signal attenuation produces than mistake, therefore existing centralized failure detector is very suitable carries out fault detect to the locomotive circuit system through regular meeting.

Summary of the invention

The purpose of the utility model provides a kind of locomotive circuit fault detect pen recorder and fault detection system; So that being carried out distributed fault, the different test points on the CAN bus in the locomotive circuit system detect; And the detection data of each test point are in time preserved; So that the detection data of all test points are carried out whole investigation analysis, thereby guarantee the safe operation of electric locomotive.

The purpose of the utility model realizes through following technical scheme:

A kind of locomotive circuit fault detect pen recorder; Be connected with supply line with the CAN bus in the locomotive circuit system; Comprise: the CAN interface module that is used to receive the CAN bus signals; Be used to store the data memory module that the CAN bus detects data; Be used for the CAN bus signals is processed into the main control module of CAN bus detection data and the storage of control data memory module, be used for the CAN bus of data memory module is detected the data output external interface that data are exported, and convert electric energy in the supply line to power transfer module that steady current is also supplied power for CAN interface module, data memory module, main control module and data output external interface;

The CAN interface module is connected with CAN bus in the locomotive circuit system;

Main control module is connected with CAN interface module, data memory module and data output external interface respectively;

Power transfer module is connected with supply line in the locomotive circuit system, is connected with CAN interface module, data memory module, main control module and data output external interface respectively simultaneously.

Preferably, corresponding C AN interface module, data memory module, main control module, data output external interface and power transfer module are integrated on the same circuit board.

Preferably, corresponding data memory module comprises data buffer area and data persistent storage.

Preferably, corresponding data buffer area has adopted synchronous DRAM SDRAM chip I S42S16400;

Described data persistent storage has adopted the flash chip K9F1G08U0M by complex programmable logic device (CPLD) chip EPM570T100C5 control read-write operation.

Preferably, corresponding main control module has adopted digital signal processor DSP chip TMS320VC5509A.

Preferably, corresponding C AN interface module has adopted CAN controllers chip SJA1000.

A kind of locomotive circuit fault detection system is connected with supply line with CAN bus in the locomotive circuit system, comprising: the locomotive circuit fault detect pen recorder described in fault detect host computer and at least one technique scheme;

Locomotive circuit fault detect pen recorder comprises CAN interface module, power transfer module and data output external interface;

Power transfer module is connected with supply line in the locomotive circuit system;

The fault detect host computer is connected with the data output external interface of at least one locomotive circuit fault detect pen recorder.

Technical scheme by above-mentioned the utility model provides can be found out; Locomotive circuit fault detect pen recorder that the utility model embodiment provides and fault detection system are connected with CAN bus in the locomotive circuit system through the CAN interface module, and the CAN bus signals on the detection CAN bus; Main control module carries out analyzing and processing to the CAN bus signals; Judging whether the CAN bus signals is abnormal signal, and the content of judged result, CAN bus signals and the transmission time of CAN bus signals detected data and send the data memory module storage to as the CAN bus; The fault detect host computer through with the CAN bus on the locomotive circuit fault detect pen recorder of different test points connect, thereby obtain the detection data of different test points and carry out whole investigation analysis, to guarantee the safe operation of electric locomotive.

Description of drawings

In order to be illustrated more clearly in the technical scheme of the utility model embodiment; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skill in the art; Under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.

The structural representation one of the locomotive circuit fault detection system that Fig. 1 provides for the utility model embodiment;

The structural representation two of the locomotive circuit fault detection system that Fig. 2 provides for the utility model embodiment.

Embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment of the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the protection domain of the utility model.

To combine accompanying drawing that locomotive circuit fault detect pen recorder and the fault detection system that the utility model embodiment is provided is described in detail below.

Embodiment one

As depicted in figs. 1 and 2; A kind of locomotive circuit fault detect pen recorder; Be connected with supply line with the CAN bus in the locomotive circuit system; Be used to detect the line item storage of going forward side by side of whether breaking down of CAN bus signals on the CAN bus, its concrete structure can comprise: CAN interface module, data memory module, main control module, data output external interface and power transfer module; The CAN interface module is connected with CAN bus in the locomotive circuit system; Main control module is connected with CAN interface module, data memory module and data output external interface respectively; Power transfer module is connected with supply line in the locomotive circuit system, is connected with CAN interface module, data memory module, main control module and data output external interface respectively simultaneously.

Wherein, as shown in Figure 2, the specific embodiments of each parts of this locomotive circuit fault detect pen recorder can comprise:

(1) CAN interface module: be used to receive the CAN bus signals; Corresponding C AN interface module has adopted CAN controllers chip SJA1000 (this chip is produced by the design of PHILIPS company); CAN interface module among the application is resolved the transmission signals on the CAN bus through this chip; Through octuple bus transceiver chip SN74LVC245DW the information that parses is gone out to deliver to main control module again then and connect, thereby realized detection the CAN bus with ternary output; Because the circuit that the application's chips SJA1000 and chip SN74LVC245DW are constituted has adopted custom circuit connected mode in the prior art, so repeat no more in the present specification.

(2) data memory module: be used to store the CAN bus and detect data and preset normal communications signal data; Corresponding data memory module can comprise data buffer area and data persistent storage; This data buffer area can adopt SDRAM, and (SDRAM is the abbreviation of Synchronous Dynamic Random Access Memory; Being translated into synchronous DRAM) chip I S42S16400 (produced by ISSI company by this chip; This part circuit of data buffer area has adopted the custom circuit connected mode of this chip in the prior art among the application, so repeat no more in the present specification); This data persistent storage can adopt that (CPLD is the abbreviation of Complex Programmable Logic Device by CPLD; Being translated into CPLD) (this chip is the MAXII series CPLD chip of being produced by altera corp to chip EPM570T100C5; The circuit of forming data buffer area by this chip controls flash chip among the application has adopted the custom circuit connected mode of this chip in the prior art; So repeat no more in the present specification) (this chip is produced by SAMSUNG company for the flash chip K9F1G08U0M of control read-write operation; This chip is controlled by the circuit that CPLD carries out read-write operation and has adopted the custom circuit connected mode of this chip in the prior art among the application, so repeat no more in the present specification).

(3) main control module: be used for that the CAN bus signals is processed into the CAN bus and detect data and the storage of control data memory module; Corresponding main control module can adopt DSP (DSP is the abbreviation of Digital Signal Processing, is translated into digital signal processor) chip TMS320VC5509A; 16 fixed DSP processors of C55x series that this chip is produced by company of Texas Instrument (TI); It has powerful calculation process ability; The USB communication module that can utilize inside to carry substitutes external USB interface chip, and can utilize inner hyperchannel buffer memory serial ports and CAN controllers chip to carry out data communication.

(4) data output external interface: be used for the CAN bus of data memory module is detected data output; Exist in practical application; This data output external interface is preferably USB, and (USB is the abbreviation of Universal Serial BUS; Be translated into USB) interface, have the data transmission interface of a highly versatile and ability plug and play to guarantee this locomotive circuit fault detect pen recorder; The host computer that carries out fault detect can detect data through the CAN bus that this interface obtains in the data memory module; And, the CAN bus in a plurality of locomotive circuit fault detect pen recorders that are arranged at different test points carries out analyzing and processing through being detected data; Thereby whether the CAN bus of determining the locomotive circuit system breaks down, and where breaks down.

(5) power transfer module: be used for supply line's electric energy is converted to steady current and is CAN interface module, data memory module, main control module and the power supply of data output external interface; This power transfer module can adopt known power-switching circuit of the prior art, as long as can convert the electric energy in the supply line of locomotive electric system to steady current, no longer is described in greater detail in this application.

Particularly, the principle of work of this locomotive circuit fault detect pen recorder is:

Main control module detects the CAN bus signals on the CAN bus in the locomotive Circuits System through the CAN interface module, and it is carried out analyzing and processing; If this CAN bus signals meets the normal communications signal data that prestore in the data memory module; Then judge the CAN bus non-fault here, and with transmission time of the content of this CAN bus signals, this CAN bus signals and to identify this signal be that the information of normal communications signal detects data as the CAN bus and sends data memory module to and store; Otherwise, judge that then there is fault in the CAN bus here, and with transmission time of the content of this CAN bus signals, this CAN bus signals and to identify this signal be that the information of fault-signal detects data as the CAN bus and sends data memory module to and store.

Further; Corresponding C AN interface module, data memory module, main control module, data output external interface and power transfer module are integrated on the same circuit board, and a protecting sheathing preferably are installed to protect the influence of the circuit dust on this circuit board on this circuit board.Because these modules all are formed in one, so advantages of small volume, are convenient to plug, are adapted at using in the various wiring space in the electric locomotive.In addition, visible by the specific embodiments of each parts of above-mentioned this locomotive circuit fault detect pen recorder, advantage such as the utility model embodiment has simple and reliable for structure, stable performance, and with low cost, product up-gradation is flexible.

As depicted in figs. 1 and 2; A kind of locomotive circuit fault detection system; Be connected with supply line with the CAN bus in the locomotive circuit system; Its concrete structure can comprise: the locomotive circuit fault detect pen recorder described in fault detect host computer (this fault detect host computer can and be equipped with the software that carries out data transmission with data output external interface for computing machine of the prior art, and perhaps other can carry out the device of data transmission with the data output external interface of locomotive circuit fault detect pen recorder) and at least one technique scheme;

Corresponding locomotive circuit fault detect pen recorder comprise with the locomotive circuit system in the CAN interface module that is connected of CAN bus; The power transfer module that is connected with supply line in the locomotive circuit system, and the data output external interface that is used for carrying out data communication with the fault detect host computer;

The fault detect host computer can connect with a plurality of data output external interfaces that are arranged at the locomotive circuit fault detect pen recorder of different test points simultaneously; Also can communicate connection with the data output external interface of the locomotive circuit fault detect pen recorder that is arranged at different test points respectively constantly, detect data thereby obtain the CAN bus of being preserved in the data memory module of each locomotive circuit fault detect pen recorder in difference; Then; This fault detect is upper carries out analyzing and processing through these CAN buses are detected data; If certain locomotive circuit fault detect pen recorder at a time detects fault-signal and judges that then there is fault in the CAN bus here; If the several test points on same section CAN bus judge that then this section CAN bus breaks down in that the data that synchronization detected are inconsistent, otherwise just represent that the locomotive circuit system works is normal.

It is thus clear that; The realization of the utility model embodiment can be carried out distributed fault to the different test points on the CAN bus in the locomotive circuit system and detect; And the detection data of each test point are in time preserved; So that the detection data of all test points are carried out whole investigation analysis, thereby guarantee the safe operation of electric locomotive.

The above; Be merely the preferable embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claims.

Claims

1. locomotive circuit fault detect pen recorder; Be connected with supply line with the CAN bus in the locomotive circuit system; It is characterized in that; Comprise: the CAN interface module that is used to receive the CAN bus signals; Be used to store the data memory module that the CAN bus detects data; Be used for the CAN bus signals is processed into the main control module of CAN bus detection data and the storage of control data memory module, be used for the CAN bus of data memory module is detected the data output external interface that data are exported, and convert electric energy in the supply line to power transfer module that steady current is also supplied power for CAN interface module, data memory module, main control module and data output external interface;

2. locomotive circuit fault detect pen recorder according to claim 1 is characterized in that, described CAN interface module, data memory module, main control module, data output external interface and power transfer module are integrated on the same circuit board.

3. locomotive circuit fault detect pen recorder according to claim 1 and 2 is characterized in that described data memory module comprises data buffer area and data persistent storage.

4. locomotive circuit fault detect pen recorder according to claim 3 is characterized in that, described data buffer area has adopted synchronous DRAM SDRAM chip I S42S16400;

5. locomotive circuit fault detect pen recorder according to claim 1 and 2 is characterized in that described main control module has adopted digital signal processor DSP chip TMS320VC5509A.

6. locomotive circuit fault detect pen recorder according to claim 1 and 2 is characterized in that described CAN interface module has adopted CAN controllers chip SJA1000.

7. locomotive circuit fault detection system; Be connected with supply line with the CAN bus in the locomotive circuit system; It is characterized in that, comprising: fault detect host computer and at least one aforesaid right require each described locomotive circuit fault detect pen recorder in 1 to 6;