CN104793069B - A kind of data transmission performance self-checking system of active type cable - Google Patents
A kind of data transmission performance self-checking system of active type cable Download PDFInfo
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- CN104793069B CN104793069B CN201510106171.7A CN201510106171A CN104793069B CN 104793069 B CN104793069 B CN 104793069B CN 201510106171 A CN201510106171 A CN 201510106171A CN 104793069 B CN104793069 B CN 104793069B
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Abstract
The invention discloses a kind of data transmission performance self-checking system of active type cable, the active type cable is the twin-core transmission cable with the first core as up-link and the second core as downlink, and it includes：Winding circuit, its optionally the first core and second core described in UNICOM；Signal emission module, its transmission signal to the first core；Signal receiving module, it receives the signal from first core that the second core is arrived by winding line receiver；Microcontroller, the bit error rate between the corresponding signal that the signal and the signal receiving module that its more described signal emission module is launched are received, to judge the data transmission performance of the active type cable accordingly；Switching switch；Wherein, the winding circuit, signal emission module, signal receiving module, microcontroller and switching switch are arranged in the chip in the interface module at active type cable both ends.The present invention simplifies the transmission performance test to active type cable using brand-new measuring technology, reduces the testing time.
Description
Technical field
The present invention relates to a kind of test system of active type cable data transmission performance.It is more particularly related to one
The data transmission performance self-checking system of kind active type cable.
Background technology
Active type cable includes active cable and active optical cable.The interface mould of specific two identical functions in active type cable both ends
Block.
Wherein, active cable refers to add the electricity that active chip handles transmission signal in passive direct-connected cable
Cable.Relative to passive cable, the transmission range of active cable is longer and requirement to device Host is relatively low.
Wherein, active optical cable refers to need in communication process by extra power, converts the electrical signal to optical signal, or will
Optical signal is converted into the communications cable of electric signal, and the optical transceiver at optical cable both ends provides opto-electronic conversion and optical transport function.Greatly
Data age, high density, bandwidth applications are more and more, and now passive optical cable or the cable system based on copper cash, which just seem, catches the flap
See elbow.To ensure that the stability of transmission and flexible application, a kind of novel product of user's active demand are used as high-performance meter
The prevailing transmission medium with data center is calculated, active optical cable product arises at the historic moment under such conditions.Compared to conventional wire cable,
Active optical cable has many advantages, such as transmission rate is high, transmission range is long, energy consumption is low, easy to use, can help communication equipment
The huge advantage of optical transport is enjoyed, is the preferable transmission cable in the fields such as data center, consumer electronics.
In the production test procedure of active type cable, it usually needs the signal transmission performance of cable is carried out using Error Detector
Detection.Code error tester is formed by sending and receiving two parts, and the test code generator of transmitting portion produces survey known to one
Serial No. is tried, the input of system under test (SUT) is sent into after coding, is exported after system under test (SUT) transmits, into code error tester
Receiving portion decodes and synchronised clock is obtained from reception signal.The test code generator of receiving portion produces and sending part split-phase
Same and synchronous Serial No., and the signal received are compared, and are error codes if inconsistent, with counter pair
The digit of error code is counted, then record storage, analysis, display test result.
Above-mentioned Error Detector may include pseudo-noise code generator and pseudo noise code signal errors detection device.Prior art is adopted
With independent pseudo noise code signal generator and pseudo noise code signal errors detection device.By caused by pseudo noise code signal generator
Signal accesses pseudo noise code signal errors detection device after active type cable is transmitted, by the shape for reading pseudo noise code detector
State judges testing result.As shown in figure 1, test system includes pseudo noise code signal generator, pseudo noise code detector, radio frequency line
Cable, test board and tested active type cable.From figure 1 it will be seen that there is following drawback in this scheme：
One, complete set test equipment is needed, equipment cost input is greatly；
Secondly, active type cable be to possess full-duplex communication standard, prior art every time test is only capable of test one-way transmission
Can, completing an active type cable test needs to be tested twice.
The content of the invention
It is an object of the invention to solve at least the above and/or defect, and provide at least will be described later it is excellent
Point.
It is a still further object of the present invention to provide a kind of data transmission performance self-checking system of active type cable, it is by having
Setting signal transmitter module, signal receiving module and circuit winding in the interface module of source cable both ends, realize once test i.e.
The effect that self data transmission performance of cable can be detected, and external test equipment is no longer needed, reduce equipment investment
Cost.
In order to realize according to object of the present invention and further advantage, there is provided following technical scheme：
A kind of data transmission performance self-checking system of active type cable, the active type cable are with the as up-link
The twin-core transmission cable of one core and the second core as downlink, it includes：
Winding circuit, its optionally the first core and second core described in UNICOM；
Signal emission module, its transmission signal to first core；
Signal receiving module, its receive described second core by the winding line receiver arrive from first core
Signal；
Microcontroller, the signal that its more described signal emission module is launched are received with the signal receiving module
Corresponding signal between the bit error rate, to judge the data transmission performance of the active type cable accordingly；And
Switching switch, it switches UNICOM state of the winding circuit between first core and the second core, and cuts
Change the signal emission module and whether the signal receiving module is in transmitting or receives signal condition；
Wherein, the winding circuit, signal emission module, signal receiving module, microcontroller and switching switch are respectively provided with
In chip in the interface module at the active type cable both ends.
Preferably, the signal emission module is pseudo noise code transmitter, and it launches pseudo noise code.
Preferably, the switching switch is to be realized using a ground pin in chip, wherein, ground pin is in
When being grounded low level state, switching switch switches the winding circuit not UNICOM between first core and the second core, and
Switch the signal emission module and the signal receiving module is not at transmitting or receiving state signal；Ground pin is in height
During level state, switching switch switches the winding circuit and causes first core and the second core UNICOM, and the switching letter
Number transmitter module and the signal receiving module are in transmitting or receiving state signal.
Preferably, the data transmission performance self-checking system of described active type cable also includes：Two external test boards,
It is respectively connecting to the interface module at the active type cable both ends,
Described two external test boards set ground pin described in the interface module being attached thereto to be in high electricity respectively
Level state.
Preferably, LED light is provided with described two external test boards, by one of test board
LED light carries out the instruction of error code status based on the bit error rate.
Preferably, the data transmission performance self-checking system of described active type cable, in addition to：It is arranged in interface module
LED light, when the bit error rate exceedes threshold value, the LED light indicates that the active type cable does not pass through performance detection.
Preferably, the data transmission performance self-checking system of described active type cable, in addition to：Test board, it is arranged on
In the interface module at the active type cable both ends, the test board sets the ground pin to be in high level state.
Preferably, the LED light is arranged on the test board.
Preferably, the active type cable includes active cable and active optical cable.
The data transmission performance self-checking system of active type cable of the present invention comprises at least following beneficial effect：
One, the test equipment needed are simple；Eliminate the external pseudo-noise code generator of tradition, pseudo noise code detection
Device and RF cable；
Secondly, testing procedure it is simple；Eliminated in test process to pseudo-noise code generator and pseudo noise code detector
Operation, only show the mark as testing result by the use of the LED on test board；
Thirdly, the testing time it is short；Once test can carry out effective detection to the Capability transmission of two paths of full duplex.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is the system schematic that prior art is detected to the data transmission performance of active type cable；
Fig. 2 is the composition frame chart of active type cable data transmission performance self-checking system one of which embodiment of the present invention；
Fig. 3 is the built-in function block diagram of interface module one of which embodiment in active type cable both ends of the present invention；
Fig. 4 is the workflow diagram of interface module one of which embodiment in active type cable both ends of the present invention；
Fig. 5 is the workflow schematic diagram of test board one of which embodiment of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein are not precluded from one or more
The presence or addition of individual other elements or its combination.
Reference picture 2-3, the invention provides a kind of data transmission performance self-checking system of active type cable, the active type cable
For the twin-core transmission cable with the first core as up-link and the second core as downlink, it includes：
Winding circuit, its optionally the first core and second core described in UNICOM；
Signal emission module, its transmission signal to first core；
Signal receiving module, its receive described second core by the winding line receiver arrive from first core
Signal；
Microcontroller, the signal that its more described signal emission module is launched are received with the signal receiving module
Corresponding signal between the bit error rate, to judge the data transmission performance of the active type cable accordingly；And
Switching switch, it switches UNICOM state of the winding circuit between first core and the second core, and cuts
The signal emission module and the signal receiving module are changed whether in transmitting or receiving state signal；
Wherein, the winding circuit, signal emission module, signal receiving module, microcontroller and switching switch are respectively provided with
In chip in the interface module at the active type cable both ends.
Here, in such scheme of the present invention, only by the setting signal transmitting mould in the interface module of active type cable both ends
Block, signal receiving module and circuit winding, it is achieved that once test self data transmission performance can be carried out to active type cable
The effect of detection, and external test equipment is no longer needed, reduce equipment investment cost.In other words, the present invention is in active line
Between two inner cores of cable, data are sent using first core, the second core forwards the data that the first core is sent, and passes through signal
Receiving module is received, and recycles microcontroller to be compared, you can to measure whether the active type cable has good data
Transmission performance.To adopt in such a way, once produce data transmission performance testing result, testing efficiency is not only high, and substantially
Need not other any extraneous test equipments supports.Here, composition frame chart inside the interface module that reference picture 3 provides, wherein, return
Loop wire road is directive, and its inner core side connected by signal receiving module in interface module (pseudo noise code receiver) is pointed to
The inner core side of signal emission module (pseudo-noise code generator) connection, and optionally connect, it can be seen that, the present invention passes through
Signal emission module in the interface module of active type cable one end passes through other end interface module to the first core transmission signal, the signal
It is middle to be back to the second core after the winding circuit transfer of first core and the second core UNICOM and be transmitted, signal end is launched after transmission
Interface module in signal receiving module received, and be compared using microcontroller therein, just whether draw signal
There is error code.
In above-mentioned technical proposal, it is preferred that the signal emission module is pseudo noise code transmitter, and it launches pseudorandom
Code.Above-mentioned pseudo noise code is back to signal receiving module (alternatively referred to as pseudo noise code receiver), microcontroller by winding circuit
It can show that the tested active type cable whether there is error code by relatively the two difference, you can measure the number of the tested active type cable
According to transmission performance.
In above-mentioned technical proposal, it is preferred that the switching switch is to be realized using a ground pin in chip, its
In, when ground pin is in ground connection low level state, switching switch switches the winding circuit in first core and the second core
Between not UNICOM, and switch the signal emission module and the signal receiving module is not at transmitting or reception signal shape
State；When ground pin is in high level state, switching switch switches the winding circuit and first core and the second core is joined
It is logical, and switch the signal emission module and the signal receiving module in transmitting or receiving state signal.Here, it is described
Switching switch realizes that it is the mode of operation switching switch as active type cable, in other words using a ground pin of chip
Say：(communication load is connected to when the active type cable normal work), its ground pin is normal ground connection low level state, its
In winding circuit, signal emission module and signal receiving module cut little ice；And when the active type cable will carry out performance
During test, its ground pin will be placed in high level state, and switching switch can cause winding line in the presence of microcontroller
Road, signal emission module and signal receiving module are selectively in starting state, to realize data transmission performance testing.Specifically
For, the present invention is in order that obtaining cable can switch under normal mode of operation and test pattern, and ensure normally to make
Used time will not be worked under test pattern, then is used as mode of operation by the use of one in multiple ground pins in cable interface module
Switching switch, is configured to normal mode of operation, when cable connects when cable interface inside modules detect that the pin is low level
Mouth inside modules detect is configured to test pattern when the pin is high level.When normal use, the pin is ground connection low level
During state, cable interface module works in normal mode of operation, and when tested, the pin is then arranged to high level shape by test board
State, wiring module work in test pattern.
To realize the setting to switching switch, currently preferred to be, the data transmission performance self-test of the active type cable
System also includes：Two external test boards, referring to Fig. 2, its be respectively connecting to the interface module A at the active type cable both ends,
B, described two external test boards set ground pin described in the interface module being attached thereto to be in high level state respectively.
Specifically, when needing to test active type cable, i.e., the interface module at active type cable both ends is inserted into two tests
Plate, the ground pin that test board will switch it to switch is arranged to high level state, and is carried for the interface module of active type cable
For normal working voltage, so that it starts test program.Wherein, test board is to refer to acceptance line cable interface module to insert and carry
For the minimum unit of relevant work voltage.
Active type cable transmission performance final detection result is quickly judged in order to facilitate tester, it is currently preferred to be,
LED light is provided with described two external test boards, referring to Fig. 2, and by the LED light of one of test board
Status display is carried out based on the bit error rate.I.e. for the LED light as bit error signal indicator lamp, it indicates that interface module is external
The signal level state of some pin of interface pin, the level signal of this pin is by error detection function inside interface module
Control.Specifically, by foregoing description, and the interface module built-in function block diagram shown in reference picture 3, the active line of the present invention
In the interface module of cable both ends, only one end interface module carries out signal transmitting and signal is received to carry out error detection, and in addition
One end interface module then carries out the transfer of data, carries out the LED light that error code status is shown here and is then attached to error code inspection
Survey the test board indicator lamp of end interface module.LED light uses green light in present example, and green light, which goes out, indicates error code testing
Not by the way that green light indicates that no error code testing passes through.
Next, reference picture 4-5, illustrates the work of active type cable data transmission performance self-checking system of the present invention
Principle：
Wherein, Fig. 4 is active type cable interface module workflow diagram.
By flow diagram, detection pattern control pin level first is (i.e. as switching after electricity in cable interface module
The ground pin of switch) whether it is high level state, then enter test pattern if height, then enter normal work mould if low
Formula.Start pseudo noise code receiver (being in receiving state signal) after into test pattern first, and detect pseudo noise code reception
Whether device has signal：Represented if having signal cable interface module the other end worked in test pattern and open it is pseudo- with
Machine code generator (having carried out signal transmitting) and pseudo noise code receiver (return of waiting signal receives), now open circuit and return
Ring function simultaneously closes pseudo noise code receiver；Represent that the other end of wiring module does not work also if no signal and (do not launch letter
Number), pseudo-noise code generator is now then turned on, and cable winding function is closed, detect error code again at regular intervals later
Number.Interface module is eventually through an external interface pin output state indication signal, and test board is by detecting the state instruction
The level of signal just determines the light on and off state of LED light.Reference picture 5, when it is high to detect condition indicative signal, put out
Go out LED light；When it is low to detect condition indicative signal, LED light is lighted.
Judgement for active type cable data transmission performance, the then test connected according to the interface module at error detection end
Onboard led indicator lamp judged, specifically：
When testing cable, one end A to test board A of cable is inserted, now test board A indicator lamps go out, and are inserted into cable
Other end B to another test board B, now test board B indicator lamps are bright.When test board B LED light is bright, start to see
Examine whether test board A LED light condition adjudgement cable is good, and state and judged result are as follows：
First, indicator lamp Chang Liang：Transmission is good without error code, the cable transmission data performance.
2nd, indicator lamp flashes：Intermittent error code is transmitted, the cable transmission data performance is extremely slight.
3rd, indicator lamp extinguishes：Transmission is always maintained at error code, and two tunnel data performances of the cable are extremely serious.
It is further that the present invention gives another more excellent embodiment, i.e., test board is built in into cable connects
The technical scheme of mouth mold block：
Specifically, the data transmission performance self-checking system of the active type cable, in addition to：It is arranged in interface module
LED light, when the bit error rate exceedes threshold value, the LED light indicates that the active type cable does not pass through performance detection.I.e.
When error code be present, LED light would indicate that active type cable by performance test, can now not prompted using when red
(still judge according only to the light on and off situation of the LED light in the interface module of one end, and the other end is only used as data relay).
Preferably, the data transmission performance self-checking system of the active type cable, in addition to：Test board, it is arranged on institute
In the interface module for stating active type cable both ends, the test board sets the ground pin to be in high level state.Here it is same as above,
Mode of operation is switched over yet by test board, its ground pin is low level state during interface module normal work, if
People need the carry out performance detection to active type cable, can be completed by starting test board.It is further preferred that the LED refers to
Show that lamp is arranged on the test board, principle is same as above.
In the present invention, the active type cable includes active cable and active optical cable.Both it is adapted to examine active cable
Survey, be adapted to detect active optical cable again.
New Active cable self-checking system provided by the present invention is occurred using the pseudo noise code carried inside active type cable
Device, pseudo noise code detector, circuit winding and microcontroller, coordinate the detection implementation method of uniqueness so that active type cable both ends
Interface module can be in self-adapting start pseudo-noise code generator, pseudo noise code detector and circuit winding it is a kind of or several
Kind function, and can detect and indicate error code status.It is for test equipment requires low, test operation is easy, test result is seen
Examine easy, testing efficiency height.
Number of devices and treatment scale described herein are the explanations for simplifying the present invention.To the active line of the present invention
The application of cable data transmission performance self-checking system, modifications and variations will be readily apparent to persons skilled in the art.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed fortune in specification and embodiment
With.It can be applied to various suitable the field of the invention completely., can be easily real for those skilled in the art
Now other modification.Therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited to
Specific details and shown here as the legend with description.
Claims (8)
1. a kind of data transmission performance self-checking system of active type cable, the active type cable is with first as up-link
The twin-core transmission cable of core and the second core as downlink, it is characterised in that including：
Winding circuit, its optionally the first core and second core described in UNICOM；
Signal emission module, its transmission signal to first core；
Signal receiving module, it receives the letter from first core that second core is arrived by the winding line receiver
Number；
Microcontroller, the phase that the signal that its more described signal emission module is launched is received with the signal receiving module
The bit error rate between induction signal, to judge the data transmission performance of the active type cable accordingly；And
Switching switch, it switches UNICOM state of the winding circuit between first core and the second core, and switching institute
Signal emission module and the signal receiving module are stated whether in transmitting or receiving state signal；
Wherein, the switching switch is to be realized using a ground pin in chip, wherein, ground pin, which is in, is grounded low electricity
During level state, switching switch switches the winding circuit not UNICOM, and described in switching between first core and the second core
Signal emission module and the signal receiving module are not at transmitting or receiving state signal；Ground pin is in high level state
When, switching switch switches the winding circuit and causes first core and the second core UNICOM, and the switching signal transmitting mould
Block and the signal receiving module are in transmitting or receiving state signal；The winding circuit, signal emission module, signal receive
Module, microcontroller and switching switch are arranged in the chip in the interface module at the active type cable both ends.
2. the data transmission performance self-checking system of active type cable as claimed in claim 1, it is characterised in that the signal transmitting
Module is pseudo noise code transmitter, and it launches pseudo noise code.
3. the data transmission performance self-checking system of active type cable as claimed in claim 1, it is characterised in that also include：Two
External test board, it is respectively connecting to the interface module at the active type cable both ends, described two external test board difference
Ground pin described in the interface module being attached thereto is set to be in high level state.
4. the data transmission performance self-checking system of active type cable as claimed in claim 3, it is characterised in that described two external
Test board on be provided with LED light, by one of test board LED light be based on the bit error rate carry out error code
The instruction of state.
5. the data transmission performance self-checking system of active type cable as claimed in claim 1, it is characterised in that also include：Set
LED light in interface module, when the bit error rate exceedes threshold value, the LED light indicates the active type cable not
Pass through performance detection.
6. the data transmission performance self-checking system of active type cable as claimed in claim 1, it is characterised in that also include：Test
Plate, it is arranged in the interface module at the active type cable both ends, and the test board sets the ground pin to be in high level
State.
7. the data transmission performance self-checking system of active type cable as claimed in claim 5, it is characterised in that the LED instructions
Lamp is arranged on test board.
8. the data transmission performance self-checking system of the active type cable as described in claim any one of 1-7, it is characterised in that described
Active type cable includes active cable and active optical cable.
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| CN201510106171.7A CN104793069B (en) | 2015-03-11 | 2015-03-11 | A kind of data transmission performance self-checking system of active type cable |
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| CN201510106171.7A CN104793069B (en) | 2015-03-11 | 2015-03-11 | A kind of data transmission performance self-checking system of active type cable |
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| CN104793069B true CN104793069B (en) | 2018-03-06 |
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| US20170138998A1 (en) * | 2015-11-16 | 2017-05-18 | Mediatek Inc. | Testing Device for Connection Interface and Related Testing Methods |
| CN106997015A (en) * | 2017-05-24 | 2017-08-01 | 惠州汇聚电线制品有限公司 | A kind of communication cable performance test methods and test equipment |
| CN108828354B (en) * | 2018-06-01 | 2021-06-04 | 中科曙光信息产业成都有限公司 | Testing device for cable |
| CN109406931A (en) * | 2018-11-01 | 2019-03-01 | 上海开通数控有限公司 | Servo drive system cable detecting device |
| CN110474680B (en) * | 2019-07-31 | 2024-06-07 | 武汉联胜光电技术有限公司 | Active optical cable channel detection control card and detection method |
| CN111049578B (en) * | 2019-12-13 | 2021-04-27 | 长飞光纤光缆股份有限公司 | AOC optical module connection checking method and device |
| CN111948512A (en) * | 2020-06-19 | 2020-11-17 | 浪潮(北京)电子信息产业有限公司 | Cable signal integrity testing method and device and storage medium |
| CN113742124B (en) * | 2021-08-25 | 2024-02-13 | 河南源网荷储电气研究院有限公司 | Intelligent IO (input/output) self-checking method and system based on CAN (controller area network) bus |
| CN113890771B (en) * | 2021-11-30 | 2022-03-18 | 长芯盛（武汉）科技有限公司 | Device and method for reducing power consumption of active cable |
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| CN103051379A (en) * | 2013-01-06 | 2013-04-17 | 青岛海信宽带多媒体技术有限公司 | Optical module debugging system |
| CN103837790A (en) * | 2014-03-04 | 2014-06-04 | 南车株洲电力机车有限公司 | Multi-core cable checking device and cable checking method thereof |
| CN104090198A (en) * | 2014-07-02 | 2014-10-08 | 长芯盛（武汉）科技有限公司 | USB 3.0 cable testing method and device |
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