CN101353048B - Plug-in component equipment for locomotive communicating system - Google Patents
Plug-in component equipment for locomotive communicating system Download PDFInfo
- Publication number
- CN101353048B CN101353048B CN2008102122332A CN200810212233A CN101353048B CN 101353048 B CN101353048 B CN 101353048B CN 2008102122332 A CN2008102122332 A CN 2008102122332A CN 200810212233 A CN200810212233 A CN 200810212233A CN 101353048 B CN101353048 B CN 101353048B
- Authority
- CN
- China
- Prior art keywords
- equipment
- photoelectrical coupler
- electric capacity
- pin
- branch road
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Information Transfer Systems (AREA)
Abstract
The invention provides plug-in equipment used for a locomotive communication system. The plug-in equipment comprises a central processing device, an asynchronous communication unit, and a current loop interface device; wherein, the current loop interface device comprises an input branch and an output branch, and the input branch is used for converting current signals to level signals and sending the level signals to the asynchronous communication unit, and the output branch is used for receiving the level signals of the asynchronous communication unit and controlling the on and off of the output terminal of the current loop interface device; the asynchronous communication unit is used for realizing the signal interaction of the current loop interface device and the central processing device. The plug-in equipment used for communication can provide the current loop interface of 20mA and realize the communication of the locomotive communication system with the peripheral equipment with the current loop of 20mA.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of plug-in component equipment that is used for locomotive communicating system.
Background technology
Along with China railways the sixth time speed-raising and progressively a large amount of the starting of EMU, the application of the LKJ2000 type train operation monitoring and recording device that the present electric locomotive of China (comprising motor train unit) is extensively adopted has also proposed requirement higher and that upgrade.
Two cover operation monitoring systems are arranged on the electric locomotive operator platform at present, comprise LKJ2000 device and train automatic protection (ATP) device.The indicator screen of LKJ2000 device is by combinations such as literal, curve, figures, many-sided information and contents such as display speed, distance, track profile, bend, tunnel, bridge, very directly perceived, the driver handles train safe very like a cork and travels according to screen display.But when train speed surpasses 200km/h, the driver can't show ground signal and judges and react, on EMU, adopt the ATP device this moment, mobile unit is according to the terrestrial information and the train parameter that receive, calculate the permissible velocity of train operation in real time, the supervision train operation.
Comprise two kinds of interfaces between LKJ2000 device and ATP device, a kind of is communication interface, and a kind of is brake interface.Communication interface is the RS422 interface, and communication protocol has comprised a lot of key messages relevant with car controlling.The interface of LKJ2000 device and motor train unit has RS485 and two kinds of interfaces of 20mA electric current loop, and communication protocol has mainly comprised and the relevant information of motor train unit braking.
In the prior art, the LKJ2000 device self has the corresponding communication module, be communication plug-in unit, this plug-in unit is inserted in the mainframe box of LKJ2000, its function is by carrying out data exchange between RS485 or RS422 and the LKJ2000 external device, and the internal system bus CAN bus by LKJ2000 self sends to the main frame plug-in unit to the information that collects, or the information of LKJ2000 is sent to external device.
The communication plug-in unit of existing LKJ2000 device comprises 2 road RS485 interfaces and 1 road RS422/485 interface, and wherein 1 road RS485 communication interface is used for connecting with train bus-line/vehicle bus, realizes the information exchange of control monitor unit and train/locomotive control system; 1 road RS422/RS485 interface is used for and cab signal device or point information devices communicating, thereby improves the reliability of transmission quantity of information and transmission information, between the plug-in unit by inner CAN network exchange data.
Along with the fast development of track traffic, motor train unit are widely used.But LKJ2000 device of the prior art lacks 20mA electric current loop interface to be used for the motor train unit locomotive, can not satisfy the condition of service of motor train unit.
In addition, the external communication interface of existing LKJ2000 device is all occupied, does not have unnecessary interface for use, and its internal communication bus resource (CAN bus) also levels off to saturated, and it is very difficult to increase the higher information of new priority.Simultaneously, in the communication protocol between LKJ2000 device and ATP device, need lot of data to exchange, and all data have been carried out coding and decoding, also used cyclic redundancy effect (CRC).The CRC effect is 32, and the microcontroller of communication plug-in unit (MCU) is 8, can relatively expend time in when handling 32 CRC effects like this.
Summary of the invention
Technical matters to be solved by this invention provides a kind of plug-in component equipment that is used for locomotive communicating system, and locomotive communicating system can be communicated with the external device that has the 20mA electric current loop.
The invention provides a kind of plug-in component equipment that is used for locomotive communicating system, this equipment comprises central processing unit, asynchronous communication unit, reaches the electric current loop interface arrangement:
Described electric current loop interface arrangement comprises input branch road and output branch road, and described input branch road is used for that current signal is converted into level signal and sends described asynchronous communication unit to; Described output branch road is used to receive the level signal of described asynchronous communication unit, control described electric current loop interface arrangement mouth conducting, end;
Described asynchronous communication unit is used to realize that the signal between described electric current loop interface arrangement and the described central processing unit is mutual;
Described central processing unit comprises the pointer control module, and described pointer control module is used for carrying out 8 when the 32 bit data computings, and data pointer points to low eight of 32 bit data, reads data and computing.
Wherein, described interface is a 20mA electric current loop interface.
Wherein, described input branch road comprises first electric capacity, first diode, second diode, first photoelectrical coupler, first Schmidt trigger, first resistance, reaches second electric capacity;
The positive pole of described first electric capacity of input branch road positive input termination, the negative pole of the negative pole of described first diode and described second diode, the positive pole of described first diode connects second pin of described first photoelectrical coupler, the positive pole of the negative pole of described first electric capacity and described second diode connects the 4th pin of described first photoelectrical coupler, the 8th pin power connection of described first photoelectrical coupler and described first resistance, the inverting input of described first Schmidt trigger of another termination of described first resistance and the 6th pin of described first photoelectrical coupler, the mouth of the output termination input branch road of described first Schmidt trigger, the 6th pin of described first photoelectrical coupler connects the positive pole of second electric capacity, the 5th pin of described first photoelectrical coupler and the negative earth of described electric capacity.
Wherein, described input branch road also comprises first resistance, second resistance, and the 3rd resistance;
Described first resistance is connected between the positive pole of input branch road positive input terminal and described first electric capacity, described second resistance and the described first electric capacity parallel connection, described the 3rd resistance are connected between second pin of anodal and described first photoelectrical coupler of described first diode.
Wherein, described input branch road also comprises the 3rd electric capacity, and the positive pole of described the 3rd electric capacity connects the 8th pin of first photoelectrical coupler, the negative earth of described the 3rd electric capacity.
Wherein, described output branch road comprises first diode, first electric capacity, first photoelectrical coupler, second electric capacity;
The 3rd pin of described first photoelectrical coupler of positive output termination of output branch road, the positive pole of the negative pole of described first diode and described first electric capacity connects the 3rd pin of described first photoelectrical coupler, the negative pole of the positive pole of described first diode and described first electric capacity connects the 4th pin of described first photoelectrical coupler, the 8th pin power connection of described first photoelectrical coupler and the positive pole of described second electric capacity, the 5th pin ground connection of the negative pole of described second electric capacity and described first photoelectrical coupler.
Wherein, described output branch road also comprises first resistance, and described first resistance is connected between the 3rd pin of output positive output end of branch road and described first photoelectrical coupler.
Wherein, this equipment also comprises the RAM memory device, and described RAM memory device links to each other with described central processing unit with described asynchronous communication unit by parallel bus.
Wherein, this equipment also comprises RS485 serial communication interface and select switch, and the common port of described select switch links to each other with described central processing unit, and one the tunnel links to each other with described electric current loop interface arrangement, and one the tunnel links to each other with the RS485 serial communication interface.
Wherein, this equipment also comprises the RS422 serial communication interface, and described RS422 serial communication interface links to each other with described central processing unit.
Wherein, this equipment also comprises CAN controller and CAN interface, and described CAN controller links to each other with described central processing unit by parallel bus, and described CAN interface connects described CAN controller.
Wherein, this equipment also comprises the ROM memory device, and described ROM memory device links to each other with described central processing unit with described CAN controller by parallel bus.
Wherein, this equipment also comprises dual port RAM memory device, VME interface, and described dual port RAM memory device links to each other with described central processing unit by parallel bus, and described VME interface links to each other with described dual port RAM memory device by parallel bus.
Wherein, this equipment also comprises the RS485 serial communication interface, and described RS485 serial communication interface links to each other with described central processing unit.
Wherein, this equipment also comprises select switch, RS485 serial communication interface and RS232 serial communication interface, the described central processing unit of public termination of described select switch, and one the tunnel connects the RS485 serial communication interface, and one the tunnel connects the RS232 serial communication interface.
Wherein, this equipment also comprises rectangular connector, and described electric current loop interface arrangement links to each other with described rectangular connector.
The present invention has following beneficial effect:
The invention provides a kind of plug-in component equipment that is used for locomotive communicating system, adopt the electric current loop interface arrangement to provide 20mA electric current loop interface to external equipment, comprise input branch road and output branch road, the input branch road is used for that current signal is converted into level signal and sends the asynchronous communication unit to; The output branch road is used to receive the level signal of asynchronous communication unit, the conducting of control current ring interface device mouth, ends; The asynchronous communication unit is used to realize that the signal between electric current loop interface arrangement and the central processing unit is mutual.
With respect to prior art, the invention provides a kind of communication plug-in unit equipment that 20mA electric current loop interface can be provided, strengthened the applicability of locomotive communicating system, make it and can communicate with the external device that has the 20mA electric current loop.
Simultaneously, on the basis of realizing original communication plug-in unit function, increased a RS485 serial communication interface newly, also increased the dual port RAM memory device of a 8K byte, by the data exchange between VME bus realization communication plug-in unit equipment and the main frame, the real-time that makes plug-in unit finish data exchange is greatly improved; On software, adopt the CRC32 algorithm of optimizing, computational efficiency improves greatly.
Description of drawings
Fig. 1 is the plug-in component equipment constructional drawing that is used for locomotive communicating system that first embodiment of the invention provided;
Fig. 2 is the plug-in component equipment constructional drawing that is used for locomotive communicating system that second embodiment of the invention provided;
Fig. 3 is 20mA electric current loop loop physical circuit figure that second embodiment of the invention provided;
Fig. 4 is communication plug-in unit device software framework diagram of circuit that second embodiment of the invention provided;
Fig. 5 is central processing unit functional structure chart that second embodiment of the invention provided.
The specific embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Referring to shown in Figure 1, be the plug-in component equipment constructional drawing that is used for locomotive communicating system that first embodiment of the invention provided.This equipment comprises central processing unit 101, asynchronous communication unit 102, electric current loop interface arrangement 103, wherein, draw parallel bus from central processing unit 101, comprise data bus, address bus and control bus, data bus is a bidirectional bus, and address bus and control bus are unidirectional bus, are sent by central processing unit 101, asynchronous communication unit 102 links to each other with central processing unit 101 by parallel bus, and electric current loop interface arrangement 103 connects asynchronous communication unit 102.
Wherein, the electric current loop interface arrangement 103 in the communication plug-in unit equipment provided by the invention refers in particular to and is 20mA electric current loop interface arrangement, is used to the external equipment that has the 20mA electric current loop that the electric current loop interface is provided.
Electric current loop interface arrangement 103 comprises input branch road and output branch road, and the input branch road is used for that current signal is converted into level signal and sends asynchronous communication unit 102 to; The output branch road is used to receive the level signal of asynchronous communication unit 102, the conducting of control current ring interface device 103 mouths, ends;
Referring to shown in Figure 2, be the plug-in component equipment constructional drawing that is used for locomotive communicating system that second embodiment of the invention provided.The communication plug-in unit equipment that present embodiment provided, be used for LKJ2000 type train operation monitoring and recording device (LKJ2000 device), this communication plug-in unit equipment provides one road 20mA electric current loop communication interface, two-way RS485 serial communication interface, one road RS422 serial communication interface, two-way CAN bus interface for the LKJ2000 device, and increased dual port RAM (Random Access Memory) memory device newly, by the information exchange between VME (Versa Module Eurocard) bus realization communication module and the LKJ2000 main frame.
This system comprises central processing unit 201, RAM memory device 202, ROM (Read Only Memory) memory device 203, asynchronous communication unit 204, CAN (Controller Area Network) controller 205, CAN controller 206, dual port RAM memory device 207, RS485 serial communication interface 208, RS485 serial communication interface 209, RS232 serial communication interface 210,20mA electric current loop interface 211, RS485 serial communication interface 212, RS422 serial communication interface 213, CAN interface 214, CAN interface 215, VME interface 216, X1 adaptor union 217, the single contact pin 218 of J5, X3 adaptor union 219, X2 adaptor union 220, select switch 221, and select switch 222.
Wherein, draw parallel bus from central processing unit 201, comprise data bus, address bus and control bus, data bus is a bidirectional bus, address bus and control bus are unidirectional bus, send by central processing unit 201, asynchronous communication unit 204, CAN controller 205, CAN controller 206, and dual port RAM memory device 207 link to each other with central processing unit 201 by parallel bus respectively.
The full duplex asynchronous serial ports (UART0) of central processing unit 201 links to each other with RS485 serial communication interface 208, RS485 serial communication interface 208 connects X1 adaptor union 217, the full duplex asynchronous serial ports (UART1) of central processing unit 201 links to each other with the common port of select switch 221,1 path of select switch 221 connects RS485 serial communication interface 209,2 paths of select switch 221 connect RS232 serial communication interface 210, RS485 interface 209 connects X1 adaptor union 217, and RS232 interface 210 connects the single contact pin 218 of J5.
The common port and the RS422 serial communication interface 213 of switch 222 selected in 204 selectings of asynchronous communication unit, 1 path of select switch 222 connects 20mA electric current loop interface 211,2 paths of select switch 222 connect RS485 serial communication interface 212,20mA electric current loop interface 211 and RS485 serial communication interface 212 are all received X 3 adaptor unions 219, and RS422 interface 213 connects X1 adaptor union 217.
CAN controller 205 connects CAN interface 214, and CAN controller 206 connects CAN interface 215, and CAN interface 214 and CAN interface 215 are all received on the X1 adaptor union 217.
Wherein, central processing unit 201 adopts 8 8-digit microcontrollers (MCU) DS80C320 chip.
20mA electric current loop interface 211 comprises input branch road and output branch road, and the input branch road is used for that current signal is converted into level signal and sends asynchronous communication unit 204 to; The output branch road is used to receive the level signal of asynchronous communication unit 204, the conducting of control 20mA electric current loop interface 211 mouths, ends.
Dual port RAM memory device 207 is by the information exchange between VME bus realization communication plug-in unit equipment and the LKJ2000 device main frame, can make the dominant frequency of communication plug-in unit equipment also bring up to 33MHz, not only improve the exchange capacity of data, also do not taken the LKJ2000 internal bus resources.
CAN controller 205 and CAN controller 206 all adopt the SJA1000 chip, are used to realize CAN bus protocol part, and with central processing unit 201 between communicate by letter.
Adopting the technical scheme of front panel outlet in the communication plug-in unit equipment that present embodiment provided, promptly is that signal is guided on the adaptor union of front panel, by this adaptor union signal is introduced or output, and this is distinctive to the LKJ2000 device.RS485 serial communication interface 212 that increases newly and 20mA electric current loop interface 211 are drawn by the rectangular connector on the panel (D89) 219, and the back shroud that this method has well solved the LKJ2000 device does not have unnecessary plug point position can supply the problem of pig-tail wire.
By communication plug-in unit equipment provided by the present invention, can introduce this asynchronous communications of 20mA electric current loop, the physical circuit principle of its generation 20mA current return is as shown in Figure 3.
Referring to Fig. 3, be 20mA electric current loop provided by the present invention loop physical circuit figure.As shown in the figure, comprise two current branch, received current branch road and outgoing current branch road.
Received current props up route+24V and the 20mA-Rx signal is formed, in this current branch, + 24V signal end connecting resistance R71, the negative pole of another terminating diode RD1 of resistance R 71 and the negative pole of diode RD2, the positive pole of diode RD1 is received the 1st pin of photoelectrical coupler OP16 through resistance R 72, the positive pole of diode RD2 connects the 3rd pin and the 20mA-Rx signal end of photoelectrical coupler OP16, resistance R 70 and capacitor C 36 are connected in parallel on diode RD2 two ends respectively, the 8th pin connecting resistance R73 of photoelectrical coupler OP16, the positive pole of capacitor C 34 and power supply VCC, 13 ends of another termination Schmidt trigger of resistance R 73 and the 6th pin of photoelectrical coupler, 12 termination 8530B-RX signal ends of Schmidt trigger, the 6th pin of photoelectrical coupler connects the positive pole of capacitor C 35, the negative pole of capacitor C 34, the 5th pin ground connection of the negative pole of capacitor C 35 and photoelectrical coupler.
Outgoing current props up route 20mA-Tx and the 24VG signal is formed, in this current branch, 20mA-Tx signal end connecting resistance R104, the positive pole of the negative pole of the other end of resistance R 104 and diode RD3 and capacitor C 38 is received the 3rd pin of photoelectrical coupler OP17 together, the negative pole of the positive pole of diode RD3 and capacitor C 38 connects the 4th pin of photoelectrical coupler OP17, the 4th pin of 24VG signal termination photoelectrical coupler OP17, the 8th pin of photoelectrical coupler OP17 meets the positive pole and the power supply VCC of capacitor C 37, the 5th pin of photoelectrical coupler OP17 and the negative earth of capacitor C 37, the 6th pin of photoelectrical coupler OP17 connects the 20mA-Tx signal end.
By schematic circuit diagram as can be known, the 20mA electric current loop is made up of 4 lines, is respectively+24V, 20mA-Rx, 20mA-Tx and 24VG signal, and wherein ,+24V and 20mA-Rx signal are formed input current loop, and 20mA-Tx and 24VG signal are formed output current loop.According to the logical one of numeric data code and " 0 ", it is logical and disconnected that electric current is formed, and when data are logical one, has the 20mA electric current to flow through in the loop, when data are logical zero, do not have the 20mA electric current to flow through in the loop.20mA electric current loop interface 211 is a kind of Asynchronous Serial Interfaces, must be initial with no current when sending data, as the start bit of each character at every turn.
The great advantage of 20mA current return method is a low-resistance transmission line, and is insensitive to electric noise, antijamming capability is strong, and is easy to realize that photoelectricity isolates, and is applicable to tens analog signal transmission of the long distance of hundreds of rice even.
Communication plug-in unit equipment provided by the present invention has carried out a large amount of optimization to former communication plug-in unit, improve real time of data transmission as far as possible, in addition based on the storage characteristics of 8 8-digit microcontrollers, adopted the CRC32 algorithm of improvement, improved the arithmetic speed of CRC greatly, the software architecture diagram of circuit of whole communication plug-in unit equipment as shown in Figure 4.
Referring to Fig. 4, be the communication plug-in unit device software framework diagram of circuit that second embodiment of the invention provided.This software architectural method specifically may further comprise the steps:
Step 401: Initialization Center processing equipment (CPU);
Step 402: communication plug-in unit equipment self-inspection;
Step 403: initialization sheet outer controller;
Step 404: interrupt initialization;
Step 405: judge whether the CAN bus has message pick-up, if, carry out CAN bus receiving management, enter step 406 again, if not, directly enter step 406;
Step 406:CAN bus sends management;
The management of step 407:ATP data sink;
Step 408: motor train unit data sink management;
Step 409: dual port RAM management;
Step 410: other timed events management enters step 405.
The communication plug-in unit equipment that present embodiment provided adopts 8 8-digit microcontrollers as central processing unit 201, for cyclic redundancy effect (CRC) 32 optimization Algorithm based on 8 8-digit microcontrollers, mainly be characteristics according to the storage organization of 51 kernels of 8 8-digit microcontrollers, utilize C Guide Finger of Language technology, change the addressing address, thereby reach the purpose that improves arithmetic speed.
Referring to shown in Figure 5, be the central processing unit functional structure chart that second embodiment of the invention provided.Central processing unit 201 comprises pointer control module 201a and data read module 201b, wherein the pointer control module is used for carrying out 8 when the 32 bit data computings, instruction pointer points to the low eight of 32 bit data, data read module 201b be used for and the outside between data interaction.
For 8 microcontroller, its register all is 8, once can only carry out 8 data operation.If when carrying out 32 data manipulation, just will carry out 4 computings at least and just can finish, add at every turn to deposit, read and also take a lot of wait times, and in common CRC32 algorithm, can use 8 computings of operating with 32 bit data in a large number.In the CRC32 of optimization provided by the present invention algorithm, utilize C Guide Finger of Language technology, carrying out 8 when the 32 bit data computings, characteristics according to computing, mandatory modification pointer address, make it directly point to the least-significant byte of 32 bit data, so just changed 8 computings of operating with 32 bit data into 8 computings of operating with 8 bit data, improved computational efficiency greatly.Show that according to reality test effect the method after the optimization is 8 times of original algorithm on operation efficiency.
The plug-in component equipment that is used for locomotive communicating system that second embodiment of the invention provided, on hardware, solved the not enough problem of existing communication card i/f, on the LKJ2000 device, increased 20mA electric current loop interface, by increasing the dual port RAM memory device to reach the purpose that does not increase LKJ2000 internal system bus resource, having solved the LKJ2000 back shroud by introducing Insertion panel outlet method does not simultaneously have unnecessary position can supply the problem of pig-tail wire.
On software, adopt the CRC32 algorithm of optimizing, the real-time that makes plug-in unit finish data exchange is greatly improved, and computational efficiency improves greatly.
More than a kind of plug-in component equipment that is used for locomotive communicating system provided by the present invention is described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (16)
1. a plug-in component equipment that is used for locomotive communicating system is characterized in that, this equipment comprises central processing unit, asynchronous communication unit, reaches the electric current loop interface arrangement:
Described electric current loop interface arrangement comprises input branch road and output branch road, and described input branch road is used for that current signal is converted into level signal and sends described asynchronous communication unit to; Described output branch road is used to receive the level signal of described asynchronous communication unit, control described electric current loop interface arrangement mouth conducting, end;
Described asynchronous communication unit is used to realize that the signal between described electric current loop interface arrangement and the described central processing unit is mutual; Described central processing unit comprises the pointer control module, and described pointer control module is used for carrying out 8 when the 32 bit data computings, and data pointer points to low eight of 32 bit data, reads data and computing.
2. equipment according to claim 1 is characterized in that, described interface is a 20mA electric current loop interface.
3. equipment according to claim 1 is characterized in that, described input branch road comprises first electric capacity, first diode, second diode, first photoelectrical coupler, first Schmidt trigger, first resistance, reaches second electric capacity;
The positive pole of described first electric capacity of input branch road positive input termination, the negative pole of the negative pole of described first diode and described second diode, the positive pole of described first diode connects second pin of described first photoelectrical coupler, the positive pole of the negative pole of described first electric capacity and described second diode connects the 4th pin of described first photoelectrical coupler, the 8th pin power connection of described first photoelectrical coupler and described first resistance, the inverting input of described first Schmidt trigger of another termination of described first resistance and the 6th pin of described first photoelectrical coupler, the mouth of the output termination input branch road of described first Schmidt trigger, the 6th pin of described first photoelectrical coupler connects the positive pole of second electric capacity, the 5th pin of described first photoelectrical coupler and the negative earth of described electric capacity.
4. equipment according to claim 3 is characterized in that, described input branch road also comprises first resistance, second resistance, and the 3rd resistance;
Described first resistance is connected between the positive pole of input branch road positive input terminal and described first electric capacity, described second resistance and the described first electric capacity parallel connection, described the 3rd resistance are connected between second pin of anodal and described first photoelectrical coupler of described first diode.
5. equipment according to claim 3 is characterized in that, described input branch road also comprises the 3rd electric capacity, and the positive pole of described the 3rd electric capacity connects the 8th pin of first photoelectrical coupler, the negative earth of described the 3rd electric capacity.
6. equipment according to claim 1 is characterized in that, described output branch road comprises first diode, first electric capacity, first photoelectrical coupler, second electric capacity;
The 3rd pin of described first photoelectrical coupler of positive output termination of output branch road, the positive pole of the negative pole of described first diode and described first electric capacity connects the 3rd pin of described first photoelectrical coupler, the negative pole of the positive pole of described first diode and described first electric capacity connects the 4th pin of described first photoelectrical coupler, the 8th pin power connection of described first photoelectrical coupler and the positive pole of described second electric capacity, the 5th pin ground connection of the negative pole of described second electric capacity and described first photoelectrical coupler.
7. equipment according to claim 6 is characterized in that, described output branch road also comprises first resistance, and described first resistance is connected between the 3rd pin of output positive output end of branch road and described first photoelectrical coupler.
8. equipment according to claim 1 is characterized in that this equipment also comprises the RAM memory device, and described RAM memory device links to each other with described central processing unit with described asynchronous communication unit by parallel bus.
9. equipment according to claim 1, it is characterized in that this equipment also comprises RS485 serial communication interface and select switch, the common port of described select switch links to each other with described central processing unit, one the tunnel links to each other with described electric current loop interface arrangement, and one the tunnel links to each other with the RS485 serial communication interface.
10. equipment according to claim 1 is characterized in that this equipment also comprises the RS422 serial communication interface, and described RS422 serial communication interface links to each other with described central processing unit.
11. equipment according to claim 1 is characterized in that, this equipment also comprises CAN controller and CAN interface, and described CAN controller links to each other with described central processing unit by parallel bus, and described CAN interface connects described CAN controller.
12. equipment according to claim 11 is characterized in that, this equipment also comprises the ROM memory device, and described ROM memory device links to each other with described central processing unit with described CAN controller by parallel bus.
13. equipment according to claim 1, it is characterized in that, this equipment also comprises dual port RAM memory device, VME interface, and described dual port RAM memory device links to each other with described central processing unit by parallel bus, and described VME interface links to each other with described dual port RAM memory device by parallel bus.
14. equipment according to claim 1 is characterized in that, this equipment also comprises the RS485 serial communication interface, and described RS485 serial communication interface links to each other with described central processing unit.
15. equipment according to claim 1, it is characterized in that, this equipment also comprises select switch, RS485 serial communication interface and RS232 serial communication interface, the described central processing unit of public termination of described select switch, one the tunnel connects the RS485 serial communication interface, and one the tunnel connects the RS232 serial communication interface.
16. equipment according to claim 1 is characterized in that, this equipment also comprises rectangular connector, and described electric current loop interface arrangement links to each other with described rectangular connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102122332A CN101353048B (en) | 2008-09-04 | 2008-09-04 | Plug-in component equipment for locomotive communicating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102122332A CN101353048B (en) | 2008-09-04 | 2008-09-04 | Plug-in component equipment for locomotive communicating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101353048A CN101353048A (en) | 2009-01-28 |
| CN101353048B true CN101353048B (en) | 2010-10-06 |
Family
ID=40306144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102122332A Active CN101353048B (en) | 2008-09-04 | 2008-09-04 | Plug-in component equipment for locomotive communicating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101353048B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104714B (en) * | 2014-05-13 | 2019-09-03 | 北京交通大学 | A kind of acquisition of EMU on-vehicle information and transmission device |
| CN110962883B (en) * | 2018-09-28 | 2021-04-02 | 株洲中车时代电气股份有限公司 | Data communication method and device for railway vehicle and related equipment |
| CN109587020B (en) * | 2018-11-08 | 2020-11-27 | 中国电子科技集团公司第三十八研究所 | Dual-redundancy airborne radar communication method and device with isolation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045671A (en) * | 1989-03-15 | 1990-09-26 | 中国电子***工程公司 | Full-compatibility railway dispatching system device with radio |
| CN2450713Y (en) * | 2000-09-11 | 2001-09-26 | 合肥创源智能网络有限责任公司 | Monitoring module in RS-485 bus type monitoring system |
| CN1537771A (en) * | 2003-10-22 | 2004-10-20 | 北京交通大学 | Radio locomotive signal control device carried by locomotive |
| WO2007000497A1 (en) * | 2005-06-29 | 2007-01-04 | Abb Oy | Time synchronization in serial communications |
| CN101165739A (en) * | 2005-07-15 | 2008-04-23 | 苏州大学 | Micro power radio communication device for local monitoring and control and its uses |
| CN101174250A (en) * | 2007-04-29 | 2008-05-07 | 北京交通大学 | Asynchronous serial communication method based on electric current loop |
-
2008
- 2008-09-04 CN CN2008102122332A patent/CN101353048B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045671A (en) * | 1989-03-15 | 1990-09-26 | 中国电子***工程公司 | Full-compatibility railway dispatching system device with radio |
| CN2450713Y (en) * | 2000-09-11 | 2001-09-26 | 合肥创源智能网络有限责任公司 | Monitoring module in RS-485 bus type monitoring system |
| CN1537771A (en) * | 2003-10-22 | 2004-10-20 | 北京交通大学 | Radio locomotive signal control device carried by locomotive |
| WO2007000497A1 (en) * | 2005-06-29 | 2007-01-04 | Abb Oy | Time synchronization in serial communications |
| CN101165739A (en) * | 2005-07-15 | 2008-04-23 | 苏州大学 | Micro power radio communication device for local monitoring and control and its uses |
| CN101174250A (en) * | 2007-04-29 | 2008-05-07 | 北京交通大学 | Asynchronous serial communication method based on electric current loop |
Non-Patent Citations (4)
| Title |
|---|
| WO 2007000497 A1,全文. |
| 晁甲相.多功能车辆总线MVB在LKJ2000型监控装置中的应用.机车电传动第10卷 第6期.2006,第10卷(第6期),18-20，24. |
| 晁甲相.多功能车辆总线MVB在LKJ2000型监控装置中的应用.机车电传动第10卷 第6期.2006,第10卷(第6期),18-20,24. * |
| 邵和志.LKJ2000型列车运行监控记录装置的研究.硕士学位论文.2006,34-4,58-60. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101353048A (en) | 2009-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105959288A (en) | Network protocol conversion method for power grid system and intercommunication method of power grid system | |
| CN102591291B (en) | Industrial controller and human-machine interface bidirectional data transmission system and method | |
| CN101799795A (en) | 1553B bus monitor and bus system with same | |
| CN102664779B (en) | CAN bus data transmitting method | |
| CN105337421A (en) | Protocol conversion method and mutual communication method in intelligent power network system | |
| CN202190284U (en) | Protocol converter for CAN bus and SpaceWire bus | |
| CN102857380A (en) | Remote upgrading method for power line carrier communication routing | |
| CN101353048B (en) | Plug-in component equipment for locomotive communicating system | |
| CN109828933A (en) | A kind of implementation method of the NCSI function of NCSI function network interface card and network interface card | |
| CN101976471A (en) | MVB data recording unit for locomotives and operating method thereof | |
| CN107346298A (en) | The method and system of protocol conversion between a kind of parallel bus and UART bus | |
| CN202535382U (en) | Bidirectional data transmission system of industrial controller and human-machine interface | |
| CN201163783Y (en) | Multi-serial port card based on CAN bus | |
| CN103488601B (en) | A kind of clock delay, data access method, system and equipment | |
| CN100367710C (en) | Digital filtering mode for communication data message transmission at multichannel field equipment state | |
| CN201623726U (en) | Communication device based on avionic bus ARINC429 protocol | |
| CN201515461U (en) | Digital network dedication access server of video doorphone system | |
| CN111190357B (en) | Method for realizing real-time simulation platform of electric power information physical system based on original socket | |
| CN201813387U (en) | CANOPEN data recording unit for locomotive | |
| CN201813386U (en) | MVB (multifunction vehicle bus) data recording unit for locomotive | |
| CN207650628U (en) | A kind of cascaded high-voltage frequency converter master control system of multiple processor structure | |
| CN105488010A (en) | Real-time synchronous interface protocol of backboard | |
| CN102325069B (en) | Bus interconnect device and method | |
| CN202421861U (en) | Communication device of wind turbine generator unit | |
| CN218512982U (en) | Wireless GCU |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA RAILWAY CORPORATION Free format text: FORMER NAME: TRANSPORT BUREAU OF RAILWAY DEPARTMENT |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 10 Fuxing Road, Beijing, No. 100844 Patentee after: CHINA RAILWAY CORPORATION Patentee after: Zhuzhou CSR Times Electric Co., Ltd. Address before: 10 Fuxing Road, Beijing, No. 100844 Patentee before: Transport Bureau of Railway Department Patentee before: Zhuzhou CSR Times Electric Co., Ltd. |