CN208432681U - Cable detection system - Google Patents
Cable detection system Download PDFInfo
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- CN208432681U CN208432681U CN201821249353.5U CN201821249353U CN208432681U CN 208432681 U CN208432681 U CN 208432681U CN 201821249353 U CN201821249353 U CN 201821249353U CN 208432681 U CN208432681 U CN 208432681U
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Abstract
The utility model provides a kind of cable detection system, which includes: two power units, and at least one cable being connected between two power units；Each power unit respectively includes gateway unit and detection unit, and cable is connected between two gateway units by each detection unit；Each detection unit is respectively used to when detecting to cable, disconnect the electrical connection between cable and corresponding gateway unit, and detection unit is used to send detection signal to another detection unit by cable, or for detecting signal by cable reception, the detection to cable parameter may be implemented in the case where not dismantling cable for the utility model, improve the efficiency of cable detection.
Description
Technical field
The utility model relates to train network control system field more particularly to a kind of cable detection systems.
Background technique
As the continuous development of railway transportation mostly uses motor train unit train weight to improve the economic indicator of railway transportation
The method of operation of through transport row.To realize the train grade communication for joining vehicle again, wired train bus (Wire is generallyd use at present
Train Bus, WTB) technology, to realize the transmission of the process data and message data of reconnection train.Presently, there are multiple technologies
Or equipment measures the communications cable, including measurement length of cable, impedance, the parameter informations such as decaying.
Currently, in order to which the fault point of train is accurately positioned, it usually needs measured to the parameter of WTB cable, such as to line
The parameters such as length, impedance and the decaying of cable measure.In the prior art, when the parameter to WTB cable measures, usually
The measuring device cooperated using host and slave, i.e. host connect one end of tested cable, and slave connects the another of tested cable
End sends sine wave or square-wave signal by host, then analyzed according to the waveform state of slave reflection cable state and
Complete the measurement of cable parameter.
However, in the prior art, when due to being measured to cable parameter, usually using handheld device ground into
Row, and the both ends of cable must be separately connected measuring device, therefore, for having completed the reconnection train of marshalling, then need by
Cable is dismantled, and is then measured again, and the efficiency for causing cable to measure is lower, and cannot be whenever and wherever possible to WTB cable
It measures.
Utility model content
To solve problems of the prior art, the utility model provides a kind of cable detection system, for complete
It at the reconnection train of marshalling, does not need to dismantle cable, the measurement of cable parameter can be realized, cable not only can be improved
Detection efficiency, and WTB cable can be measured whenever and wherever possible, improve the convenience of cable measurement.
In a first aspect, the utility model embodiment provides a kind of cable detection system, comprising:
Two power units, and at least one cable being connected between two power units；
Each power unit respectively includes gateway unit and detection unit, and the cable is connected by each detection unit
It connects between two gateway units；
Each detection unit is respectively used to when detecting to the cable, disconnect the cable with it is corresponding described
Electrical connection between gateway unit, and the detection unit is used to send by the cable to another detection unit and detect
Signal, or for by detecting signal described in the cable reception.
Technical solution provided by the utility model will disconnect cable and corresponding gateway list when detecting to cable
Then electrical connection between member sends detection signal to another detection unit by cable by a detection unit, into
The detection of line cable, solves in the prior art, needs to dismantle cable just and can be carried out the problem of cable detects.
Optionally, each power unit further includes control unit, each described control unit respectively with the corresponding net
Unit is closed to connect with the corresponding detection unit；Described control unit is for controlling the detection unit to the ginseng of the cable
Number is detected.
Optionally, each power unit further includes human and machine interface unit, and each human and machine interface unit is respectively and corresponding
Described control unit connection, the human and machine interface unit be used for output test result.
Control unit and interpersonal interface unit are used in cable detection process, realize that vehicle bus communication is handed over instruction
Mutually.
Optionally, each detection unit respectively includes power module, interface module, processor and bus interface group mould
Block；
The power module is connect with the interface module, the processor and the bus interface group module respectively, institute
State power module for for the detection unit power supply；
The interface module is connected with corresponding described control unit with the processor respectively, and the interface module is used for
Receive the detection instruction and the testing result sent for receiving the processor that described control unit is sent；
The processor is connected with the interface module with the bus interface group module respectively, and the processor is for controlling
System receives and dispatches the detection signal；
The bus interface group module is connected with the processor and the cable respectively.
In technical solution provided by the utility model, detection unit using processor as core, control detection signal transmitting,
Reception and digitized processing, interface module is for realizing the instruction interaction and test command reception between central control unit and surveys
Test result feedback, power module is detection unit power supply, the encoded signal that bus interface group module emits according to processor, automatically
The logic pulse signal of one fixed width is formed, and is transmitted on tested cable, meanwhile, the return signal on tested cable is transmitted
It is analyzed and processed to processor, detection cable parameter is achieved the purpose that with this.
Optionally, the bus interface group module includes at least one changeover module, each changeover module include transceiver,
First switch and the second switch, the first switch are located at the power unit where the transceiver and the first switch
Between the interior gateway unit, the second switch is between the transceiver and another power unit；
The first switch be used for before being detected to the cable, disconnect the detection unit with it is corresponding described
Electrical connection between gateway unit；The second switch is for controlling between the transceiver and another power unit
Electrical connection.
Transceiver is used to send and receive signal, and the encoded signal sent according to processor automatically forms one fixed width
Logic pulse signal, this pulse are sent on tested cable through transmitting-receiving, meanwhile, the return signal on tested cable is converted into counting
Word signal is given processor and is analyzed and processed, and before testing begins, first switch disconnects cable and corresponding gateway unit
Between electrical connection, realize measurement process without dismantling cable, while other systems or equipment can be realized without power-off
Cable measurement.
Optionally, the cable is wired train bus WTB.
Optionally, the parameter of the cable includes at least one of following information: whether the connection relationship of cable, cable
Short circuit, the length information of cable, the average characteristics impedance of cable, the pad value of cable, the return loss of cable, the exception of cable
Point position.
Optionally, the detection unit includes vehicle ethernet interface, power interface and at least one cable interface.
Optionally, the transceiver is connected to the processor, for receiving and dispatching the detection signal.
Optionally, the cable includes at least one link node.
Second aspect, the utility model embodiment provide a kind of cable detection method, comprising:
Receive the detection instruction that user sends, the detection instruction be used to indicate first detection unit to the parameter of cable into
Row detection；
According to the detection instruction, the electrical connection between the cable and gateway unit is disconnected, and passes through the cable
Detection signal is sent to second detection unit；The first detection unit and the second detection unit are located at different power lists
In member；
Receive the testing result of the parameter for the cable that the second detection unit returns.
Optionally, the method also includes:
The testing result is exported by human and machine interface unit.
Optionally, the parameter of the cable includes at least one of following information: whether the connection relationship of cable, cable
Short circuit, the length information of cable, the average characteristics impedance of cable, the pad value of cable, the return loss of cable, the exception of cable
Point position.
Cable detection system provided by the utility model, including two power units, and it is connected to two power
At least one cable between unit, each power unit respectively include gateway unit and detection unit, and cable is single by each detection
Member is connected between two gateway units；Each detection unit is respectively used to when detecting to cable, disconnect cable with it is corresponding
Gateway unit between electrical connection, and detection unit be used for by cable to another detection unit send detection signal,
Or for detecting signal by cable reception.Since each detection unit is when detecting cable, will disconnect cable with it is right
The electrical connection between gateway unit answered, avoids the disassembly process of cable, then detection unit by cable to another
Detection unit sends detection signal, to realize that cable detects, improves the efficiency of cable detection.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Figure 1A is the structural schematic diagram for the cable detection system that the utility model embodiment one provides；
Figure 1B is the structural schematic diagram for the cable detection system that the utility model embodiment two provides；
Fig. 2 is the detection unit structural schematic diagram for the cable detection system that the utility model embodiment two provides；
Fig. 3 is bus interface group modular structure schematic diagram in Fig. 2；
Fig. 4 is the panel interface schematic diagram of cable detection system；
Fig. 5 is the flow diagram of cable detection method embodiment one provided by the embodiment of the utility model；
Fig. 6 is the testing process schematic diagram of cable detection method embodiment one provided by the embodiment of the utility model.
Description of symbols:
1,2: power unit
1-1,2-1: detection unit
1-2,2-2: gateway unit
1-3,2-3: control unit
1-4,2-4: human and machine interface unit
3, A, B: cable
4: trailer body
1-1-1: power module
1-1-2: processor
1-1-3: interface module
1-1-4: power module
1-1-1-1,1-1-1-3: first switch
1-1-1-2,1-1-1-4: second switch
1-1-1-5: transceiver A
1-1-1-6: transceiver B
A1, A2, B1, B2: cable interface
ETH: vehicle ethernet interface
PWR: power interface
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The specification and claims of the utility model and term " first ", " second ", " third " in above-mentioned attached drawing
And the (if present)s such as " 4th " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.
It should be understood that the data used in this way are interchangeable under appropriate circumstances, so as to the embodiments of the present invention energy described herein
The enough sequence implementation with other than those of illustrating or describe herein.In addition, term " includes " and " having " and they
Any deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, being
System, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or
For the intrinsic other step or units of these process, methods, product or equipment.
Cable detection system provided by the utility model can be used in the scene that the parameter to cable is detected, under
Face is introduced specific embodiment of the present utility model so that the cable parameter to train detects as an example.
In the operation of trunk railway electric propulsion, as soon as locomotive traction often can not meet the requirement of transport sometimes, need
Want multi locomotive traction.In addition to improving the capacity of train, coupled running is also a kind of common method of operation of EMU, i.e., by two column
With operation is hung together between the EMU of model, operation direction of advance first row EMU is responsible for manipulation, motor train unit train joins again after
Keep capacity double.
When electric locomotive or EMU coupled running, can only it be manipulated on a locomotive by a driver, and by each
Locomotive connects its electric wiring by the multicore cable plug at locomotive both ends, realizes by more machines of a driver control
Vehicle, therefore, for the normal operation of train, carrying out fault measuring and progress fault location to cable just becomes particularly significant.
Figure 1A is the structural schematic diagram for the cable detection system that the utility model embodiment one provides, as shown in Figure 1A, this
The cable detection system that embodiment provides, comprising: power unit 1 and power unit 2, and it is connected to two power units
Between at least one cable 3.
Each power unit respectively includes gateway unit and detection unit, and the cable is connected to two by each detection unit
Between gateway unit.
As shown in Figure 1A, power unit 1 includes gateway unit 1-2 and detection unit 1-1, and power unit 2 includes gateway list
First 2-2 and detection unit 2-1, cable 3 are connected to gateway unit 1-2 and gateway list by detection unit 1-1 and detection unit 2-1
Between first 2-2.
Each detection unit is respectively used to when detecting to cable, disconnects the electricity between cable and corresponding gateway unit
Gas connection, and detection unit is used to send detection signal to another detection unit by cable, or for being connect by cable
Receive detection signal.
Specifically, in the operational process of train, respectively using the first segment compartment of train direction of advance as headstock, accordingly
, the first segment compartment with the opposite direction of train direction of advance is the tailstock, and train operator operates in headstock compartment, control column
Vehicle operation., can be using headstock compartment as power unit 1 in the utility model embodiment, tailstock compartment is for power unit 2
It is illustrated, certainly, in practical applications, can also be using headstock compartment as power unit 2, tailstock compartment is power unit 1, right
In the specific location of power unit 1 and power unit 2, the utility model embodiment is without limitation.
In order to realize the communication between train head and the tailstock, usually headstock and the tailstock are attached using cable,
Wherein, multiple trailer bodies (4 in such as Figure 1A) are provided between headstock and the tailstock.Currently, multi-locomotive mostly uses WTB technology
The train grade communication for realizing the multi-locomotive, may be implemented the transmission of the process data and message data of reconnection train, maximum
Feature is exactly that can automatically address to vehicle with the first operation function of train, constitute new train topological structure, without
Need artificial participation.
Gateway (Gateway) is also known as gateway, protocol converter.Gateway is most complicated network interconnection apparatus, network interconnection, greatly
Majority operates in application layer, is only used for the network interconnection of the network of two different upper-layer protocols on the level of the transport layer.Gateway both can be with
It is interconnected for wide area network, can be used for local area network interconnection.For heterogeneous network, since used communication standard is different,
Gateway serves as conversion weight, using in entirely different two kinds of different communication protocol, data format or language or even architecture
Between system, gateway will not only transmit information, also repack to the information received, to adapt to the data lattice of goal systems
Formula requirement.
In general, single power unit vehicle interior, pass through multifunctional vehicle bus (Multifunction between each equipment
Vehicle Bus, MVB) or Ethernet carry out data communication, referred to as vehicle network；And pass through WTB network between each power unit
The data communication between vehicle, referred to as train grade network are realized, therefore, for the vehicle for realizing train grade WTB network and power unit
Data communication between grade network, it is necessary to mutual datagram be converted, i.e., connect WTB datagram by gateway unit
Enter vehicle grade network, to realize train coupled running.When being detected to cable 3, detection unit 1-1 and detection unit 2-1
After receiving detection instruction, the switch being each turned off between the gateway unit being connected with detection unit, with disconnection detection unit
With the electrical connection of gateway unit, detection unit 1-1 disconnects the electrical connection between gateway unit 1-2, and detection unit 2-1 is disconnected
The electrical connection between gateway unit 2-2 is opened, in this way, when the detection, electricity is carried out only between detection unit and cable
Gas connection, to realize the measurement to cable parameter, while also avoiding the disassembly process to cable.
Detection unit 1-1 sends detection signal to detection unit 2-1 by cable 3, and it is single that detection unit 2-1 receives detection
After the detection signal that first 1-1 is sent, line can be passed through by the transmission feedback signal of cable 3 to detection unit 1-1, detection unit 1-1
Cable 3 receives the feedback signal of detection unit 2-1 transmission, and starts to carry out the detection to cable 3 jointly with detection unit 2-1.
Specifically, detection unit 1-1 sends sine wave or square-wave signal, detection unit 2-1 is transmitted to by cable 3, it is single according to detection
First 2-1 passes through the waveform state that cable 3 reflects, and analyzes cable state, completes cable technique parameter measurement.
Cable detection system provided by the utility model by two power units, and is connected to two power units
Between cable realize detection to cable, wherein each power unit respectively includes gateway unit and detection unit, and cable passes through
Each detection unit is connected between two gateway units, and each detection unit is respectively used to when detecting to cable, striping
Electrical connection between cable and corresponding gateway unit, and detection unit is used to send by cable to another detection unit and examine
Signal is surveyed, or for detecting signal by cable reception, realizes and the parameter of cable is detected.Due to cable into
When row detection, by disconnecting the electrical connection between cable and corresponding gateway unit, avoids and need to tear open in the detection process
The trouble of cable is unloaded, while improving cable detection efficiency.
In a kind of possible embodiment, cable detection system provided by the utility model, on the basis of Figure 1A,
Figure 1B is the structural schematic diagram for the cable detection system that the utility model embodiment two provides, as shown in Figure 1B.
Each power unit further includes control unit, further includes control unit 1-3, control unit 1-3 difference in power unit 1
With corresponding gateway unit 1-2 and detection unit 1-1 connection；It further include control unit 2-3, control unit 2-3 in power unit 2
Respectively with corresponding gateway unit 2-2 and detection unit 2-1 connection, wherein control unit is for controlling detection unit to cable 3
Parameter detected.
The hardware configuration and principle the utility model of control unit are not provided, as long as being based on existing conventional train
The corresponding component unit of network control system can be realized vehicle bus (WTB or Ethernet) communication.
Further, each power unit further includes human and machine interface unit, includes human and machine interface unit 1-4 in power unit 1,
Human and machine interface unit 1-4 and corresponding control unit 1-3 connection further include human and machine interface unit 2-4 in power unit 2, man-machine
Boundary element 2-4 and corresponding control unit 2-3 connection.Wherein, human and machine interface unit 1-4 and 2-4 is used for output test result.
Specifically, man-machine interface (Human Machine Interaction, HMI), be transmitting between people and computer,
The medium and dialog interface for exchanging information, are the important components of computer system.Man-machine interface refers to that people and the hard of machine connect
Touching and soft touching, this faying face not only includes the direct contact of point-line-surface, further includes the effect of remote information transmitting and control
Space.In the utility model embodiment, human and machine interface unit shows for realizing train status and the instruction with train system
Interaction.For example, user can issue detection instruction to control unit by clicking the detection button in more touch-control man-machine interfaces,
Control unit control detection system is set to carry out cable detection, in addition, after detection unit detects cable, it will man-machine
Output test result on interface such as shows " cable connection relationship is normal ".
The hardware configuration and principle the utility model of human and machine interface unit are not provided, as long as being based on existing routine
The corresponding component unit of train network control system can be realized vehicle bus (WTB or Ethernet) and communicate with instruction interaction i.e.
It can.
Fig. 2 is the structural schematic diagram of detection unit in Figure 1A and Figure 1B, as shown in Fig. 2, each detection unit respectively includes electricity
Source module, interface module, processor and bus interface group module.
By taking the detection unit 1-1 in power unit 1 as an example, detection unit 1-1 includes power module 1-1-4, interface module
1-1-3, processor 1-1-2 and bus interface group module 1-1-1.
Wherein, power module 1-1-4 respectively with interface module 1-1-3, processor 1-1-2 and bus interface group module 1-1-
1 connection, power module 1-1-4 are used to power for detection unit.Power module 1-1-4 can be charged by train, be also possible to
It is made of independent battery pack.
Interface module 1-1-3 is connected with corresponding control unit 1-3 with processor 1-1-2 respectively, and interface module 1-1-3 is used
In the reception control unit 1-3 detection instruction sent and the testing result sent for receiving processor 1-1-2.
Processor 1-1-2 is connected with interface module 1-1-3 with bus interface group module 1-1-1 respectively, and processor 1-1-2 is used
Detection signal is received and dispatched in control.
Specifically, transmitting, reception and the digitized processing of processor 1-1-2 control detection signal.In detection unit 1-1
Processor 1-1-2, by interface module 1-1-3 receive control unit 1-3 sending detection instruction, transmitting detection signal,
Be transmitted through the cable to the processor in the processor in power unit 2, in power unit 2 receive transmitting signal after, return
Write in reply number into processor 1-1-2, handled, analyzed according to the signal message reflected in power unit 23 state of cable with
And complete 3 measurement of technical parameter of cable.
Bus interface group module 1-1-1 is connected with processor 1-1-2 and cable 3 respectively, for detection unit 1-1 to be connect
Enter bus, becomes on-vehicle parts unit.
It needs to be illustrated, power module, interface module, processor and the bus for including in detection unit 2-1 connect
Mouthful group module connection type and working principle, with include in detection unit 1-1 power module, interface module, processor and
The connection type of bus interface group module is similar with working principle, and details are not described herein again.
Fig. 3 is bus interface group modular structure schematic diagram in Fig. 2.
Bus interface group module 1-1-1 includes at least one changeover module, and each changeover module includes transceiver, first opens
It closes and second switch, first switch is located between the gateway unit in the power unit where transceiver and first switch, second
Switch is between transceiver and another power unit.
Wherein, transceiver can automatically form the logic arteries and veins of one fixed width after the encoded signal for receiving processor transmission
Signal is rushed, and the logic pulse signal is sent on tested cable, meanwhile, the return signal on tested cable is converted into counting
Word signal is given processor and is analyzed and processed.
First switch is used for the electrical connection between disconnection detection unit and corresponding gateway unit before the test begins.
Second switch is used to control the disconnection and connection between transceiver and another power unit.
As shown in figure 3, bus interface group module 1-1-1 includes transceiver A1-1-1-5, transceiver B1-1-1-6, transceiver
The of the second switch 1-1-1-2 of the first switch 1-1-1-1 of A1-1-1-5, transceiver A1-1-1-5, transceiver B1-1-1-6
The second switch 1-1-1-4 of one switch 1-1-1-3, transceiver B1-1-1-6.
In the specific implementation process, the quantity more than one of usual cable, transceiver A and transceiver B respectively indicate transmitting-receiving
Detection data in different cables detects the parameter of two lines cable.
By taking transceiver A1-1-1-5 as an example, the detection unit 1-1 in power unit 1 is received by interface module 1-1-3
When to detection instruction, by first switch 1-1-1-1, electrical connection between disconnection detection unit 1-1 and gateway unit 1-2,
Then detection signal is sent by processor 1-1-2, transceiver A1-1-1-5 receives the detection letter of processor 1-1-2 transmission
Number, the logic pulse signal of one fixed width is automatically formed, this logic pulse signal is sent to tested cable through transmitter 1-1-2
On.By tested cable transmission into the detection unit 2-1 in power unit 2.Detection unit 2-1 is received by transceiver and is detected
Signal, and be sent to after processor handled, then return signal is transmitted to the transmitting-receiving in power unit 1 by cable
Device A1-1-1-5, transceiver A1-1-1-5 receive signal and are converted to digital signal and give processor 1-1-2 and be analyzed and processed.
After processor 1-1-2 processing analysis, cable testing result is transmitted to control unit 1-3 through interface module 1-1-3, through controlling
Unit 1-3 is shown on human and machine interface unit 1-4.
Fig. 4 is the panel interface schematic diagram of cable detection system, and detection unit includes at least interface shown in Fig. 4.Under
Face is introduced its interface group by taking detection unit 1-1 as an example.
As shown in figure 4, in A1 corresponding diagram 3 cable A and the direction gateway unit 1-2 cable interface, cable in A2 corresponding diagram 3
The cable interface of A and the direction detection unit 2-1；The interface of cable B and the direction gateway unit 1-2, B2 corresponding diagram in B1 corresponding diagram 3
The cable interface of cable B and the direction detection unit 2-1 in 3；ETH is that the vehicle ethernet communication communicated with control unit connects
Mouthful；PWR is power interface.Optionally, the cable in the various embodiments described above is wired train bus WTB.
Wherein, it is the data communication realized between organizing into groups vehicle that wired train bus WTB, which is Train Communication Network standard,
The bus standard of definition.WTB is able to satisfy the needs of train real-time control, diagnosis and passenger information system, it is often more important that, WTB
It has fully considered the case where train marshalling list dynamic changes, can adapt to the requirement that train marshalling list often changes in daily operation,
And the requirement of different manufacturers manufacture vehicle interconnection and interoperability.
Optionally, cable includes at least one link node.Due to the quantity more than one of trailer body, the connection of cable
Node is also more, and the utility model embodiment with no restrictions, does not also limit the link node of cable the quantity of trailer body
System, is specifically subject to actual conditions.
Optionally, in the various embodiments described above detection unit detect cable parameter, may include in following information extremely
Few one: whether short circuit, the average characteristics impedance of the length information of cable, cable, cable decline for the connection relationship of cable, cable
Depreciation, the return loss of cable, the abnormity point position of cable.
Further, it is notable that control unit, human and machine interface unit and detection unit in the various embodiments described above
Command communication can be carried out by Ethernet to remove using User Datagram Protocol (User Datagram Protocol, UDP)
Other than communication message function, to the ethernet communication parameter such as port Socket and network protocol (Internet Protocol；
IP) address does not provide.
In addition, above-mentioned communication mode can use the master-slave mode of question-response, i.e. control unit and man-machine interface list
Member issues test starting command, after detection unit receives the instruction, carries out cable detection, issues testing result after the completion of detection and ring
It answers.
Optionally, when detecting to cable, control unit and human and machine interface unit are handed down to the detection of this section fare cable
The UDP message command content of device includes:
Data length: data message length is indicated；
Measurement method: including detailed test method and method for rapidly testing；
Measurement attribute: it is used as main equipment in the measurements including testing lines device or from equipment.
Wherein, quickly test and detailed test instruction, quickly test instruction, which refers to, is used for quickly detecting cable parameter, examines
It is also fairly simple to survey content, for example, to the connection relationship of cable, whether short-circuit and whether open circuit diagnoses, detailed test
Instruction, which refers to, carries out detailed detection to the parameter of cable, and detection content is relatively abundanter, for example, to length of cable, average characteristics
Impedance, pad value, return loss etc. measure, to the connection relationship of cable, it is whether short-circuit, whether open circuit, the abnormity point position
Etc. being diagnosed.Staff can select according to actual needs in man-machine interface.After cable detection, detection
Unit may include following content to the feedback UDP message content of measurement result:
Data length: data message length is indicated；
Wiring diagram information: the connection relationship of the characterization each pin of WTB；
A line information: including A line length, A line exception vertex type, the decaying of A line impedence and return loss；
B line information: including B line length, B line exception vertex type, the decaying of B line impedence and return loss；
After control unit receives the feedback message of cable detecting device, it can testing result feedback to man-machine interface list
It is shown in member.
Cable detection system provided by the utility model by two power units, and is connected to two power units
Between cable realize detection to cable, each power unit respectively include gateway unit, detection unit, human and machine interface unit and
Control unit, human and machine interface unit for showing testing result, control unit be used to control detection unit to the parameter of cable into
Row detection, cable is connected between two gateway units by each detection unit, each detection unit be respectively used to cable into
When row detection, the electrical connection between cable and corresponding gateway unit is disconnected, and detection unit is used for through cable to another
A detection unit sends detection signal, or for detecting signal by cable reception, realizes and examine to the parameter of cable
It surveys.Since each detection unit is when detecting cable, the electrical connection between cable and corresponding gateway unit is disconnected, is avoided
The trouble for needing to dismantle cable in the detection process, improves cable detection efficiency.
Fig. 5 is the flow diagram of cable detection method embodiment one provided by the embodiment of the utility model, and Fig. 6 is this reality
With the testing process schematic diagram for the cable detection method embodiment one that new embodiment provides, in conjunction with Fig. 5 and Fig. 6, this is practical new
Type embodiment specifically comprises the following steps:
Step 101 receives the detection instruction that user sends.
Wherein, detection instruction is used to indicate first detection unit and detects to the parameter of cable.The direction of advance of train
First segment compartment be master control vehicle, the first segment compartment of train direction of advance opposite direction is from control vehicle, and driver is in master control vehicle
Control vehicle operation.Control unit and human and machine interface unit in train have collectively constituted Train Control and management system (Train
Control and Management System, TCMS).In the utility model embodiment, first detection unit can be based on
Control the detection unit of vehicle.
User passes through the detection control or pressing detection button in touch-control master control vehicle human and machine interface unit on display screen,
Detection instruction, to as shown in step a in Fig. 6, master control vehicle networked control system of the train system are sent to master control vehicle train network control system
The TCMS that unites sends starting to this vehicle gateway unit by vehicle bus and tests the instruction prepared；As shown in step b in Fig. 6, master control
Vehicle gateway unit is transmitted to the instruction from control vehicle gateway unit by WTB train bus-line；As shown in step c in Fig. 6, from control vehicle
Gateway unit is sent to the instruction from control vehicle TCMS by cable；As shown in step d in Fig. 6, starting is received from control TCMS and is surveyed
After trying the instruction prepared, is sent to this section vehicle gateway unit from control vehicle starting by vehicle bus and test ready signal；
As shown in step e in Fig. 6, passes through WTB train bus-line from control gateway unit and sent out ready instruction is tested from control vehicle starting
Give master control vehicle gateway unit.
Step 102, according to detection instruction, disconnect the electrical connection between cable and gateway unit, and by cable to the
Two detection units send detection signal.
First detection unit and second detection unit are located in different power units, in the utility model embodiment,
Second detection unit can be from control vehicle detection unit.
As shown in step f in Fig. 6, starting test is sent to from control vehicle detection unit from control vehicle TCMS by industry ethernet
Instruction, the detection unit receive from control vehicle TCMS send UDP message instruction after, firstly, disconnect from control vehicle detection unit and
From the electrical connection of control vehicle gateway unit, and starts waiting master control vehicle detection unit and send cable detection signal.Such as step in Fig. 6
Shown in g, master control vehicle gateway unit is sent to master control vehicle ready signal is tested from control vehicle starting by vehicle bus
TCMS。
As shown in step h in Fig. 6, master control vehicle TCMS sends starting test to master control vehicle detection unit by industry ethernet
Instruction, represents the host sending device that the detection unit will be measured as this.The detection unit receives the instruction of UDP message
Afterwards, firstly, disconnect master control vehicle detection unit and master control vehicle gateway unit electrical connection, and start send detection signal, with from
Control vehicle detection unit completes cable detection jointly.
The testing result of the parameter for the cable that step 103, reception second detection unit return.
As shown in step i in Fig. 6, after master control vehicle detection unit completes cable detection, testing result is sent to TCMS system
System, TCMS system are shown in testing result in man-machine interface.
In the detection process, both ends cable detecting device by circuit on-off switch with two sides gateway complete electrically every
From so that cable is the measurement completed under power blackout situation.
Wherein, the parameter of cable includes at least one of following information: the connection relationship of cable, cable whether short circuit,
The length information of cable, the average characteristics impedance of cable, the pad value of cable, the return loss of cable, the abnormal point of cable
It sets.
Cable detection method provided by the embodiment of the utility model, the detection instruction sent by receiving user, the detection
Instruction is used to indicate first detection unit and detects to the parameter of cable, then according to detection instruction, disconnects cable and gateway
Electrical connection between unit, and detection signal is sent to second detection unit by cable, wherein first detection unit and the
Two detection units are located in different power units, finally receive the detection knot of the parameter for the cable that second detection unit returns
Fruit.Due to after receiving detection instruction, will be switched off the electrical connection between cable and corresponding gateway unit, then carry out again
The detection of cable can complete the detection to cable, in the case where not dismantling cable in this way so as to improve the inspection of cable
Survey efficiency.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of cable detection system characterized by comprising two power units, and it is connected to two power lists
At least one cable between member；
Each power unit respectively includes gateway unit and detection unit, and the cable is connected to by each detection unit
Between two gateway units；
Each detection unit is respectively used to when detecting to the cable, disconnects the cable and the corresponding gateway
Electrical connection between unit, and the detection unit is used to send detection letter to another detection unit by the cable
Number, or for by detecting signal described in the cable reception.
2. system according to claim 1, which is characterized in that each power unit further includes control unit, each described
Control unit is connected with the corresponding gateway unit and the corresponding detection unit respectively；Described control unit is for controlling
The detection unit detects the parameter of the cable.
3. system according to claim 2, which is characterized in that each power unit further includes human and machine interface unit, respectively
The human and machine interface unit is connected with corresponding described control unit respectively, and the human and machine interface unit is for exporting detection knot
Fruit.
4. system according to claim 2 or 3, which is characterized in that each detection unit respectively includes power module, connects
Mouth mold block, processor and bus interface group module；
The power module is connect with the interface module, the processor and the bus interface group module respectively, the electricity
Source module is used to power for the detection unit；
The interface module is connected with corresponding described control unit with the processor respectively, and the interface module is for receiving
The detection instruction that described control unit is sent and the testing result sent for receiving the processor；
The processor is connected with the interface module with the bus interface group module respectively, and the processor is received for controlling
Send out detection signal described；
The bus interface group module is connected with the processor and the cable respectively.
5. system according to claim 4, which is characterized in that the bus interface group module includes at least one switch groups
Part, each changeover module include transceiver, first switch and the second switch, and the first switch is located at the transceiver and described
Between the gateway unit in the power unit where first switch, the second switch is located at the transceiver and another
Between one power unit；
The first switch is used for before detecting to the cable, disconnects the detection unit and the corresponding gateway
Electrical connection between unit；The second switch is electrical between the transceiver and another power unit for controlling
Connection.
6. system according to claim 1-3, which is characterized in that the cable is wired train bus WTB.
7. system according to claim 2, which is characterized in that the parameter of the cable includes at least one in following information
It is a: the connection relationship of cable, cable whether short circuit, the average characteristics impedance of the length information of cable, cable, the decaying of cable
Value, the return loss of cable, the abnormity point position of cable.
8. system according to claim 1, which is characterized in that the detection unit include vehicle ethernet interface,
Power interface and at least one cable interface.
9. system according to claim 5, which is characterized in that the transceiver is connected to the processor, for receiving and dispatching
The detection signal.
10. system according to claim 6, which is characterized in that the cable includes at least one link node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821249353.5U CN208432681U (en) | 2018-08-03 | 2018-08-03 | Cable detection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821249353.5U CN208432681U (en) | 2018-08-03 | 2018-08-03 | Cable detection system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020024804A1 (en) * | 2018-08-03 | 2020-02-06 | 中车大连电力牵引研发中心有限公司 | Cable detection system and method |
| CN113051204A (en) * | 2019-12-27 | 2021-06-29 | 中车大连电力牵引研发中心有限公司 | Serial backplane bus communication method and system |
| CN114172540A (en) * | 2022-02-14 | 2022-03-11 | 北京国科天迅科技有限公司 | Port detection circuit and method |
-
2018
- 2018-08-03 CN CN201821249353.5U patent/CN208432681U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020024804A1 (en) * | 2018-08-03 | 2020-02-06 | 中车大连电力牵引研发中心有限公司 | Cable detection system and method |
| CN113051204A (en) * | 2019-12-27 | 2021-06-29 | 中车大连电力牵引研发中心有限公司 | Serial backplane bus communication method and system |
| CN114172540A (en) * | 2022-02-14 | 2022-03-11 | 北京国科天迅科技有限公司 | Port detection circuit and method |
| CN114172540B (en) * | 2022-02-14 | 2022-05-17 | 北京国科天迅科技有限公司 | Port detection circuit and method |
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