CN2234096Y

CN2234096Y - Multi-core cable quick tracer

Info

Publication number: CN2234096Y
Application number: CN 95220677
Authority: CN
Inventors: 靳青松
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-26
Filing date: 1995-08-26
Publication date: 1996-08-28
Anticipated expiration: 2005-08-26

Abstract

The utility model relates to a multi-core cable quick tracer, which is composed of an electrical connector circuit and a detection display circuit, and uses cable cores which are traced as a connecting line. Tracing wire are converted into measure the voltage value of a certain resistor in the corresponding resistors connected in series. So marking numbers of corresponding core thread can be displayed on the display. The utility model is also provided with a speak-back circuit, which can leads workers on the both ends of cables can contact conveniently. The utility model is suitable for the tracing construction of various cables, such as communications, signals, etc.

Description

The quick wire of a kind of polycore cable

The utility model relates to a kind of instrument of identification cable core, belongs to the electrical measurement field.

When cable construction, two of the same heart yearn of identification and to label be the annoying work of part when taking a lot of work, common way is to utilize school line lamp method, promptly two people are respectively at the two ends of cable, the joint of one human school line lamp contacts each cable core respectively, When lit, this two the end of a thread that the end of a thread is a same heart yearn are described, promptly overlap with same tag.Every heart yearn all will adopt this way to mark one by one.This way not only wastes time and energy, and the school lineman needs to be equipped with in addition communication tool, rather inconvenience when contact.

The purpose of this utility model provides a kind of cable core wire, and it can be detected identification to heart yearn the end of a thread rapidly, has convenient characteristics rapidly.Simultaneously, another goal of the invention of the present utility model is the communication contact problem that solves cable two school lineman.

The purpose of this utility model realizes as follows:

A kind of polycore cable piece speed wire, it comprises terminal box circuit (1) and detects display circuit two parts, be some resistance that are cascaded in the described terminal box circuit (1), the two ends of each resistance are connected on respectively on the connecting terminal block independent of each other, and described detection display circuit is made up of reference voltage circuit (2), integrating circuit (3), clock circuit (4), A/D change-over circuit (5) and display (6).Wherein reference voltage circuit (2) is by resistance R ₇₇, R ₇₄With diode D ₁Form; Integrating circuit (3) is by resistance R ₇₆, capacitor C ₇₆Form, and be connected to respectively on A/D change-over circuit (5) respective pin, clock circuit (4) is by resistance R ₇₁, capacitor C ₇₁Form, and be connected to respectively on the respective pin of A/D change-over circuit (5), the data output end of A/D change-over circuit (5) is connected to and shows electrical equipment (6).

For the ease of the school lineman contact of conversing at the cable two ends, the utility model can also be set up a talkback circuit (7), (8) on the foregoing circuit basis, described talkback circuit send the words amplifier by microphone MIC, is talked about amplifier, loudspeaker SP and switch K ₂Form, at terminal box circuit one end, adjunction one electric capacity all at each resistance two ends, the other end of this electric capacity connects together, and is connected to switch K ₂Detecting display circuit part, the K switch in the talkback circuit (8) ₂Be connected to arbitrary heart yearn of being surveyed cable by the school.

Amplifying circuit in the so-called talkback circuit is very ripe circuit, has multiple circuit and components and parts available, and the physical circuit that the utility model provides is: send the words amplifier to adopt transistor BG ₁Constitute amplifying circuit, the biasing resistor of this amplifying circuit is R ₈₂, pull-up resistor is R ₈₃, coupling capacitance is C ₈₁, MIC meets C ₈₁, BG ₁Collector output connects " a " end of switch, K switch ₂" c " end through capacitor C ₈₂, tested cable is connected to another talkback circuit, K switch ₂" b " termination talked about amplifying circuit IC ₂Input end, its output terminal is through capacitor C ₈₃Meet loudspeaker SP.

Connect the cable checking instrument that the utility model is made, in use, as long as one of cable is terminated on the connection terminal of terminal box, at the other end, once just can be as long as heart yearn is detected the wire size of each root heart yearn to going out.Or else use as before, the heart yearn in every school just must all be checked all heart yearns one time.So be easy to use rapidly, work efficiency improves 4 times, rate of accuracy reached 100%, and, the talkback circuit of instrument utilized, staff's contact of can conversing easily, solved in the prior cable construction, the school line is slow, error is big, the difficult problem that recruitment is many, applicable to various cables, as cables such as signal, control communications.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is the utility model theory diagram;

Fig. 2 is the talkback circuit electrical schematic diagram;

Fig. 3 detects the display part electrical schematic diagram;

Fig. 4 is a terminal box part electrical schematic diagram.

The utility model is that each heart yearn and the terminal box terminal row with cable one end joins when the detection streamer heart yearn, at this moment, the current potential in the terminal box on each leading-out end of resistance in series all through cable transmission to the other end.Therefore, the magnitude of voltage that detects each heart yearn can determine this heart yearn is corresponding to which resistance of other end place.The role that cable detects therein is a measured object, also is indispensable connecting line during this wire uses.Resistance in the terminal box is preferably selected substitutional resistance, selects, and its component voltage rule is easy to identification and detection, and this example is selected 1-50K.Two of series circuit is connected to reference voltage terminal and the earth terminal that detects the display part through cable respectively.

The A/D change-over circuit is the Primary Component in the utility model, optional 7106 types, 3  position integrated packages, and its pin function can be found on product sample.Resistance R in the clock circuit ₇₁Take over pin 40 and 39, C ₇₁Connect 40 and 38; R in the reference voltage circuit ₇₇Meet K ₁, the other end is taken over pin 36, R ₇₇With diode D ₁Series connection, D ₁Current potential is clamped at 0.6-07V, R ₇₄One termination D ₁, the other end is connected to " O " and detects on the test pencil jack.R ₇₇The optional 2-40K of resistance, R ₇₄Optional 50-500K.R ₇₁Be 56-200K, C ₇₁, C ₇₃Be 100-470P, C ₇₅, C ₇₆Be 0.1-0.2 μ, R ₇₆Be 50-120K, 2-25 pin of A/D integrated package connect display.Display is selected CD-B7015A type 3  position LCD for use, and its pin function can be consulted relevant product sample.Relevantly be connected to ripe circuit, do not repeat them here.

The concrete circuit of talkback circuit is shown among Fig. 2, send the words amplifier to adopt common triode, capacitor C ₁₈The appearance value is 0.1-0.2 μ, resistance R ₈₃Resistance be 2-30K, R ₈₂Decide after adjusting the triode working current.Talked about amplifier and utilize an amplifier integrated package to make, this example is selected LA4100 for use, from capacitor C ₈₂The sound signal that (the appearance value is 2-10 μ) comes is delivered to IC ₁The 9th pin is after amplifying, by the 1st foot meridian capacitor C ₈₃Export loudspeaker SP to.Capacitor C ₈₃The appearance value be 3-100 μ.K switch ₂Effect be switching signal trend, when sending words, K ₂Beat to a retaining when being talked about K ₂Beat to b and keep off.

D ₂Be light emitting diode, make power light, R by it ₁₈And D ₂After the series connection, provide the bias voltage of about 1.5V to microphone.

The direct decision of resistance number of terminal box end once can be surveyed the radical of heart yearn, implements to select 61 resistance in this example, can draw 60 connection terminals, thereby once insert 60 heart yearns.At the other end of cable, " P " pen of testing test pencil is connected on the public heart yearn or crust of prior agreement, another test pencil " O " pen is tested each heart yearn leader respectively.Because ohmically pressure drop and resistance value are directly proportional, then the pressure drop on " n " number heart yearn then is nV.(V ₀Be the reference resistance pressure drop), this voltage shows with numeral at display through the A/D conversion.For the ease of reading, its resistance value of appropriate design and magnitude of voltage make the significant figure of demonstration directly show this multiple n, are the n terminal, and be then more directly perceived and convenient.After the detection,, inquire the other side " n " number terminal institute punching line label sleeve pipe content, promptly also indicate the label sleeve pipe of identical content herein by talkback circuit.

The ground of talkback circuit and " A " " B " hold, and can insert a certain heart yearn of cable arbitrarily, all do not influence conversation, and this is because sound signal can be through capacitor C ₁-C ₆₁In any realize coupling.

Claims

1, the quick wire of a kind of polycore cable, it is characterized in that, it comprises terminal box circuit (1) and detects display circuit two parts, be some resistance that are cascaded in the described terminal box circuit (1), the two ends of each resistance are connected on respectively on the connecting terminal block independent of each other, described detection display circuit is made up of reference voltage circuit (2), integrating circuit (3), clock circuit (4), A/D change-over circuit (5) and display (6), and wherein, reference voltage circuit (2) is by resistance R ₇₇, R ₇₄With diode D ₁Form, integrating circuit (3) is by resistance R ₇₆, capacitor C ₇₆Form, and be connected to respectively on A/D change-over circuit (5) respective pin, clock circuit (4) is by resistance R ₇₁, capacitor C ₇₁Form, and be connected to respectively on the respective pin of A/D change-over circuit (5), the data output end of A/D change-over circuit (5) connects display (6).

2, wire according to claim 1 is characterized in that, it also is provided with a talkback circuit 7,8, and described talkback circuit is sent the words amplifier, talked about amplifier, loudspeaker SP and switch K by microphone MIC ₂Form, at terminal box circuit one end, adjunction one electric capacity all at each resistance two ends, the other end of this electric capacity connects together, and is connected to switch K ₂, detecting display circuit part, the K switch in the talkback circuit (8) ₂Be connected to arbitrary heart yearn of being surveyed cable by the school.

3, wire according to claim 2 is characterized in that, send the words amplifier to adopt transistor BG ₁Constitute amplifying circuit, the biasing resistor of this amplifying circuit is R ₈₂, pull-up resistor is R ₈₃, coupling capacitance is C ₈₁, MIC meets C ₈₁, BG ₁Collector output connects K switch ₂A end, K switch ₂C end through capacitor C ₈₂, tested cable is connected to another talkback circuit, K switch ₂In addition b termination talked about amplifying circuit IC ₂Input end, its output terminal is through capacitor C ₈₃Meet loudspeaker SP.