CN103454548A - Digital line sequence collator based on programmable logic chip - Google Patents
Digital line sequence collator based on programmable logic chip Download PDFInfo
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Abstract
The invention relates to a digital line sequence collator based on a programmable logic chip. The digital line sequence collator comprises a transmitting terminal and a receiving terminal. The transmitting terminal is connected with the receiving terminal through a cable to be detected. Signals of the cable are processed by the transmitting terminal so that different modulating signals can be output, the modulating signals are transmitted to the receiving terminal through the cable, the received modulating signals are processed by the receiving terminal, and base pins, corresponding to the signals, of the transmitting terminal are judged. Line sequence collation can be conducted on the cable with tens of or even hundreds of wires through the digital line sequence collator, and the sequence numbers of the base pins corresponding to the collated wires can be directly displayed through a display screen of the receiving terminal, so that use is convenient and operation is facilitated.
Description
Technical field
The present invention relates to a kind of line order correction instrument, particularly a kind of digital line order correction instrument based on programmable logic chip.
Background technology
In the project installation process, the check and correction of the line order of cable is a very crucial step, and for many main equipments, the function end separates often with control end, and situation about also having is that equipment is divided into many parts, and it is associated that different piece adopts the multi-cable line to connect.If just numeral or the simulating signal of low-voltage of cable transmission, the result of line order misarrangement is perhaps the equipment cisco unity malfunction; If but also containing supply lines or the high-voltage signal of high voltage in cable, the misarrangement of line order may cause the damage of circuit board in equipment or power supply or burn, thereby has had a strong impact on project progress and increased engineering cost.
At present, connection between the equipment all parts adopts the standard electric cable mostly, modal as the concentric cable line, the USB line, telephone wire, netting twine, 9 needle serial port lines, 15 pin video lines, 25 pin parallel port lines, 37 pin terminal lines etc., if the cable two ends all adopt identical standard connection terminal, the engineering staff only need get final product the assigned address in the corresponding electric wire access instrument of each stitch or controller according to the label on terminal so, as long as it is out of question that cable self connects, in two end instruments, the link position of each stitch is errorless, just there will be hardly cable to connect failure problems.If mounted this type of cable breaks down, for netting twine, the product of ripe " network tester " and so on has been arranged on market, can find fast out of order that root line and breakpoint location in netting twine with it; Certain Gent that also has in the market " line finder " can be used for finding in cable is determined electric wire or is judged that whether its connection is normal or find out its abort situation, and this class " line finder " also has line order proofreading function mostly.But for some specific installation, because the restriction of its service condition, some parts cable used wherein can not be connected with connection terminal, at outdoor working equipment (as laser performance equipment, watch-dog, display device etc.), also has some underwater operation equipment etc. such as long-term.Because mostly terminal self does not possess sealing function, outdoor can rain enter may, water may directly immerse under water, thus the fault that causes short circuit or open circuit because of the stitch oxidation.In this case, the instrument part of a normally indoor end can continue to use the connection terminal connecting cable, and the part of an outdoor end is not used terminal and is filled in the shell of equipment by aperture by cable, the position that device housings contacts with the crust of cable or gluing or compress with O-ring seal, to prevent in water gas access arrangement shell.As this cable one end, be that terminal and the other end are the many bare wires that do not connect, or two ends are all that in the situation of the bare wire that do not connect, the engineering staff just need to be proofreaded the line order when this type of cable is installed.If cable just includes several different electric wires, perhaps can also be differentiated according to color; If the number of wires in cable reaches tens, utilize the colouring discrimination accuracy just very poor, if at this moment there is no the instrument of special line order check and correction, engineering staff's searching one by one of just having to multimeter, if it is far away that cable is even gone up km at a distance of hundreds of rice, two engineering staffs just need to be arranged in the situation that the corresponding pin of each wire of keeping in communication in distinguishing cable one by one with multimeter, unavoidable like this can making the mistake.Therefore, in these cases, a line order correction instrument is very important.Although above-mentioned " line finder " (also have be called " electric wire test device ") all has the function of line order check and correction mostly, but due to this class " line finder " for be mainly network communication field, the electric wire radical of its line order check and correction is generally also with regard to 8, and therefore proofreading this quasi-instrument for the line order that reaches dozens or even hundreds of wire just seems helpless.
Summary of the invention
The problems referred to above that exist for prior art, the invention provides a kind of digital line order correction instrument based on programmable logic chip.
The technical solution used in the present invention is:
Digital line order correction instrument based on programmable logic chip, this digital line order correction instrument comprises transmitting terminal and receiving end, described transmitting terminal is connected by the cable under test line with receiving end, described transmitting terminal is processed the different modulation signal of output by the signal of cable, this modulation signal transfers to described receiving end through cable, described receiving end is processed the modulation signal received, and judges the pin of the corresponding transmitting terminal of each signal.
Described transmitting terminal comprises first processor and connection terminal, and this first processor is connected with the cable under test line by described connection terminal.
Described receiving end comprises probe and the second processor, and this processor is connected with the cable under test line by described probe.
Be connected with the resistance of 80-120 Ω in described transmitting terminal between each pin of processor and connection terminal stitch.
Described modulation signal is frequency signal, coded signal or communication protocol signal.
Described modulation signal is the TTL signal that is no more than 500kHz.
The signal of described transmitting terminal, receiving end and cable under test line altogether.
Described the first and second processors are CPLD, FGPG, DSP or 51 single-chip microcomputers.
Described digital line order correction instrument also comprises the display screen be connected with receiving end, for the number of pins that shows that the cable under test line is corresponding.
Advantage of the present invention is:
1. can carry out to the cable that contains dozens or even hundreds of wire the check and correction of line order;
2. the stitch sequence number that each wire of proofreading is corresponding can directly show by the display screen of receiving end;
3. the cable of surveying is hundreds of or a few km, and line order measurement result is not affected by cable length;
4. with low cost.
The accompanying drawing explanation
Fig. 1 is basic comprising schematic diagram of the present invention;
Fig. 2 is cable under test line and connection diagram of the present invention in embodiment 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is basic comprising of the present invention, and it is comprised of transmitting terminal and two parts of receiving end.Transmitting terminal mainly comprises programmable logic chip and connection terminal, receiving end mainly comprise probe, publicly, programmable logic chip and display screen.In addition, transmitting terminal and receiving end have also included the conventional elements such as DC power supply, rechargeable battery, shell, electric wire, resistance, switch.
Wherein programmable logic chip can be CPLD, FGPG, DSP or 51 single-chip microcomputers; Connection terminal can be selected according to the requirement of actual cable under test line; Probe with can be publicly any one conducting element that can be connected electric wire, as metal probe, crocodile clip, plug electric wire etc. even; Display screen can be any a screen that can show character, as standard LCD or LED screen etc.
The present embodiment programmable logic chip is the CPLD chip, the pin that the user can use is just up to more than 100, if these pins are all programmed and are defined as output port, and on different port the different modulation signal (as frequency signal, coded signal or communication protocol signal) of output, like this by each pin with after each stitch of connection terminal is connected, because the signal difference that each stitch is entrained, each stitch has just been had any different, the ultimate principle of Here it is transmitting terminal of the present invention.
Because the pin of programmable logic chip is numerous, can be according to the requirement of actual cable under test line, each pin is connected respectively on each pin of a terminal or on the pin of a plurality of different terminals, as long as remember the corresponding signal of each pin and corresponding stitch during programming, in order to the receiving end check and correction, use.
The signal that each pin of programmable logic chip is launched is to share a ground wire, and this ground wire also will be transmitted to by certain the root wire in cable the other end to be used as receiving end and transmitting terminal publicly.According to the characteristics of cable under test line, if it has shielding line, the ground wire of transmitting terminal can be received on the metal shell of connection terminal; If there is no shielding line, ground wire can be received on the 1st pin (commonly using) or n pin (seeing actual conditions) of transmitting terminal connection terminal, perhaps the metal shell of connection terminal and the 1st pin or the equal ground connection of n pin, or transmitting terminal places the terminals that several different ground wires connect.
Each input and output pin of programmable logic chip has resistance in chip; if therefore its output pin and ground short circuit; can't cause chip to damage; but in order further to protect chip and to reduce power consumption; be connected the resistance that preferably all is connected with 80-120 Ω, the preferably resistance of 100 Ω between each pin of programmable logic chip and connection terminal stitch.
Programmable logic chip can also be that FPGA or DSP or single-chip microcomputer etc. have powerful intelligent logical control function, and there is higher sequential predictability and triggered the response speed high, make it after being programmed design, the modulation signal detected on can each wire according to cable analyzes fast, relatively (as calculated signal frequency, decode or read the mode such as the communication information), provide result thereby judge in the short period of time the corresponding pin of each signal and control display screen.The powerful logic function of utilized chip further, thus screen from several aspects subsidiary condition the accuracy that judgement guarantees shown result, not there will be line order check and correction error.The ultimate principle of Here it is receiving end of the present invention.
Transmitting terminal of the present invention sends is the TTL signal of the highest 500kHz of being no more than, because signal frequency is low, through its amplitude of cable of length, has hardly decay; And even the high level amplitude decreases, because receiving end responds is TTL rising or negative edge or the Transistor-Transistor Logic level of signal, to result of detection, can not exert an influence.Therefore, the length of the measurable cable of the present invention can be grown to hundreds of to several kms.
Because the maximum operating voltage of CPLD is 3.3V, and liquid crystal display is realized as LCD1602 also can be used 3.3V, therefore the rechargeable battery of 3.7V can be to transmitting terminal of the present invention and receiving end power supply, test result shows, if the battery capacity of transmitting terminal and receiving end is 1000mAh, and the scale of the CPLD that both use is 1270 logical blocks, after once being full of electricity, but whole correction instrument continuous working is more than 4 hours, therefore the present invention can be as handheld instrument, thereby greatly facilitates the engineering staff in outdoor engineer operation.
As shown in Figure 2, in figure, center section is common cable under test line, and the one end is connection terminal, and the other end is many wires that need be sorted.During use, the connection terminal of cable is received on the terminal of transmitting terminal of digital line order correction instrument, because the standard electric cable has shielding line or shielding tinfoil, receiving publicly on this shielding line or shielding tinfoil of receiving end, then contact respectively each wire in cable with probe, sequence number on its corresponding connection terminal can be presented on display screen immediately, if certain wire does not show sequence number on liquid crystal display, that can conclude that this electric wire opens circuit or with other wire short-circuiting.
If cable under test does not wrap up shielding line, can first according to the color of electric wire in cable, find out connection terminal first for the electric wire of answering (if color can be distinguished), the receiving end that this wire is received to digital line order correction instrument publicly, then all the other each wires difference linking probe ends, the sequence number of its corresponding wiring terminal can appear on display screen immediately.
If cable under test does not wrap up shielding line, and the color of each wire in cable can not be distinguished, in this case, can institute's live wire all short circuit receive going up publicly of digital line order correction instrument together, then one that takes out wherein is connected with sound end, on display screen, can shows immediately the sequence number on its corresponding connection terminal; If do not show, just this line is not taken back publicly, then take out one be connected with probe from the electric wire with being connected publicly, now display screen can show the electric wire sequence number immediately.If several wires that are connected with probe are not all showing the screen display sequence number, can conclude that with connection terminal the first pin or n pin (specifically which pin need be determined with the definition that is connected of terminal according to the ground wire of transmitting terminal) electric wire be (cable is defective) of opening circuit; If except last wire with being connected publicly, other electric wire has all found the sequence number corresponding with the connection terminal stitch, and that remaining that root is exactly the first pin or n pin electric wire; If last with the electric wire that can not find sequence number be connected publicly more than one, illustrate that in these several wires, existence is opened circuit or short circuit problem (cable is defective).
At some in particular cases, the two ends of cable may not connect connection terminal, can be connected by such conversion terminal: a connection terminal, its each stitch all connects a crocodile clip, and each crocodile clip is numbered according to connected stitch.Each crocodile clip of conversion terminal is connected with each wire in cable, and then this conversion terminal terminal is connected with the connection terminal of transmitting terminal of the present invention, so just can carry out according to top narrated method the line order check and correction of cable.
Should be appreciated that the above detailed description of technical scheme of the present invention being carried out by preferred embodiment is illustrative and not restrictive.Those of ordinary skill in the art modifies reading the technical scheme that can put down in writing each embodiment on the basis of instructions of the present invention, or part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. the digital line order correction instrument based on programmable logic chip, its feature exists, this digital line order correction instrument comprises transmitting terminal and receiving end, described transmitting terminal is connected by the cable under test line with receiving end, described transmitting terminal is processed the different modulation signal of output by the signal of cable, this modulation signal transfers to described receiving end through cable, and described receiving end is processed the modulation signal received, and judges the pin of the corresponding transmitting terminal of each signal.
2. the digital line order correction instrument based on programmable logic chip according to claim 1, its feature exists, and described transmitting terminal comprises first processor and connection terminal, and this first processor is connected with the cable under test line by described connection terminal.
3. the digital line order correction instrument based on programmable logic chip according to claim 1, its feature exists, and described receiving end comprises probe and the second processor, and this processor is connected with the cable under test line by described probe.
4. the digital line order correction instrument based on programmable logic chip according to claim 2, its feature exists, and is connected with the resistance of 80-120 Ω in described transmitting terminal between each pin of processor and connection terminal stitch.
5. the digital line order correction instrument based on programmable logic chip according to claim 1, its feature exists, and described modulation signal is frequency signal, coded signal or communication protocol signal.
6. the digital line order correction instrument based on programmable logic chip according to claim 5, its feature exists, and described modulation signal is the TTL signal that is no more than 500kHz.
7. the digital line order correction instrument based on programmable logic chip according to claim 1, its feature exists, and the signal of described transmitting terminal, receiving end and cable under test line is altogether.
8. according to the described digital line order correction instrument based on programmable logic chip of claim 2 or 3, its feature exists, and described the first and second processors are CPLD, FGPG, DSP or 51 single-chip microcomputers.
9. the digital line order correction instrument based on programmable logic chip according to claim 1, its feature exists, and described digital line order correction instrument also comprises the display screen be connected with receiving end, for the number of pins that shows that the cable under test line is corresponding.
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Cited By (8)
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| CN103884957A (en) * | 2014-04-09 | 2014-06-25 | 威猛工业自动化系统（昆山）有限公司 | Cable tester |
| CN104375053A (en) * | 2014-11-24 | 2015-02-25 | 中国科学院苏州生物医学工程技术研究所 | Pin wiring detection device |
| CN104678248A (en) * | 2015-03-09 | 2015-06-03 | 上海爱声生物医疗科技有限公司 | Universal ultrasonic probe testing device |
| CN104090198B (en) * | 2014-07-02 | 2017-01-04 | 长芯盛（武汉）科技有限公司 | A kind of USB 3.0 testing lines method and test device thereof |
| CN108107317A (en) * | 2016-11-25 | 2018-06-01 | 国网河南省电力公司平顶山供电公司 | Multicore cable cored wire intelligence proofreading equipment |
| CN109116177A (en) * | 2018-06-11 | 2019-01-01 | 格力电器（武汉）有限公司 | A kind of method, apparatus and computer storage medium detecting connecting line line sequence |
| CN111060850A (en) * | 2019-12-02 | 2020-04-24 | 国网河南省电力公司漯河供电公司 | Novel cable alignment device |
| CN111426988A (en) * | 2020-03-23 | 2020-07-17 | 福泰克（连云港）电子有限公司 | Wire core identification device, use method and wire core identification method |
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Application publication date: 20131218 |