CN101232307A - Network cable / module connectivity testing device - Google Patents
Network cable / module connectivity testing device Download PDFInfo
- Publication number
- CN101232307A CN101232307A CNA2008100206812A CN200810020681A CN101232307A CN 101232307 A CN101232307 A CN 101232307A CN A2008100206812 A CNA2008100206812 A CN A2008100206812A CN 200810020681 A CN200810020681 A CN 200810020681A CN 101232307 A CN101232307 A CN 101232307A
- Authority
- CN
- China
- Prior art keywords
- module
- circuit
- network cable
- relay
- level signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention relates to a network cable/module connectivity testing device, comprising an open-circuit interleaving detection function module, a test function conversion function module, a short circuit detecting function module, and a display alarm function module. The open-circuit interleaving detection function module is connected with the short circuit detecting function module through the test function conversion function module; both open-circuit interleaving detection function module and the short circuit detecting function module are connected with display alarm function module. By adopting the network cable/module connectivity testing device, uncommon conditions such as open circuit, interleaving, short circuit, etc. are indicated through the on-off change of a LBD group; the test function conversion is completed by a relay unit; the test result is displayed through the display alarm function module at the same time; the time is short during the test process; circuit response time is two times of relay response time, thus the network cable/module connectivity test can be completed rapidly. The structure is simple and practical, the working performance is stable and reliable, the scope of application is wider, and the invention brings great convenience to work and production for people.
Description
Technical field
The present invention relates to network service equipment field, particularly network service equipment technical field of measurement and test specifically is meant a kind of network cable/module connectivity testing device.
Background technology
In the modern society, along with continuous progress in science and technology, various advanced persons' means of communication has appearred, wherein topmost also be the most frequently used be exactly wired network communication.In wired network communication, crucial connected mode is to be undertaken by the mode of network cable/module, and as a network, the height of its service quality, depend primarily on the stability and the quality of network cable/module, therefore, be absolutely necessary for the test of network cable/module.
In the prior art, the general method that adopts sequence scanning one by one to each wire jumper of network cable/module to testing, consuming time longer, generally more than 3 seconds, more common have expert's board computer network cable tester of being produced by three Norths, Shanghai Industrial Co., Ltd., and the disparate networks cable tester of being produced by U.S. FLUKE company also is a similar working principle, though can satisfy other some complicated test requests, but aspect detection of connectivity, there is slow-footed problem equally, cost is very high, should not be used to produce in batches occasion, bring very big inconvenience so just for people's work and production.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, provide a kind of can finish fast network cable/module connectivity test, simple and practical, use efficient and convenient, stable and reliable working performance, scope of application network cable/module connectivity testing device comparatively widely.
In order to realize above-mentioned purpose, network cable/module connectivity testing device of the present invention has following formation:
This network cable/module connectivity testing device, its main feature are that described device comprises:
The staggered measuring ability module of open circuit, whether each the root holding wire that detects in the network cable/module exists open circuit or staggered;
The test function conversion functional module is carried out control transformation under the condition that the staggered measuring ability module of open circuit is passed through the detection of network cable/module, described network cable/module is carried out short-circuit detecting;
The function of short circuit detection module detects between each the root holding wire in the described network cable/module whether have short circuit;
The display alarm functional module indicates staggered measuring ability module of described open circuit and function of short circuit detection module whether the detection of network cable/module is passed through respectively,
The staggered measuring ability module of described open circuit is connected with described function of short circuit detection module by described test function conversion functional module, and the staggered measuring ability module of described open circuit all is connected with described display alarm functional module with the function of short circuit detection module.
The staggered measuring ability module of the open circuit of this network cable/module connectivity testing device comprises fixed partial pressure level signal generation circuit, level signal comparison circuit, adjustable reference level generation circuit, first network cable/module detects interface and second network cable/module detects interface, and described fixed partial pressure level signal produces the corresponding level signal V of holding wire quantity in circuit generation and the described network cable/module
Bi, described adjustable reference level produces the corresponding level signal V of holding wire quantity in circuit generation and the described network cable/module
AiInclude in the described level signal comparison circuit with described network cable/module in corresponding level comparing unit of holding wire quantity and NAND gate logical block, the output of described each level comparing unit is connected to the corresponding input of this NAND gate logical block, wherein V respectively
AiWith V
BiBetween satisfy following relation:
...＜V
B (i-1)＜V
A (i-1)＜V
Bi＜V
Ai＜V
B (i+1)＜V
A (i+1)＜... i is a positive integer;
Described network cable/module is serially connected with first network cable/module and detects between interface and second network cable/module detection interface, and described fixed partial pressure level signal produces the level signal V that circuit produced
BiDetect interface, network cable/module and second network cable/module by described first network cable/module successively and detect the negative input end that interface is sent into the corresponding level comparing unit in the described level signal comparison circuit, described adjustable reference level produces the level signal V that circuit produced
AiSend into the positive input terminal of the corresponding level comparing unit in the described level signal comparison circuit.
The fixed partial pressure level signal of this network cable/module connectivity testing device produces circuit and comprises than level signal V
BiMany one of quantity be serially connected with resistance between power supply and the ground successively, the lead-out wire signal between adjacent two resistance is as level signal V
Bi
The adjustable reference level of this network cable/module connectivity testing device produces circuit and comprises and level signal V
AiThe corresponding adjustable reference level of quantity generation unit, each adjustable reference level generation unit includes adjustable resistance and the fixed resistance that is serially connected with successively between power supply and the ground, the slidable adjustment end of described adjustable resistance is as level signal V
Ai
The test function conversion functional module of this network cable/module connectivity testing device comprises switching relay group and test function conversion control circuit, comprises and level signal V in the described switching relay group
BiThe corresponding relay unit of quantity, the moving contact of described each relay unit detects interface with described first network cable/module and is connected, its normally opened contact is connected in described function of short circuit detection module, and described level signal level signal V
BiSend into the normally-closed contact of corresponding relay unit respectively, described test function conversion control circuit receives the output end signal of the NAND gate logical block in the described level signal comparison circuit, and this test function conversion control circuit is controlled the contacts status of each relay unit in the described switching relay group, and controls the power supply of described function of short circuit detection module and the on off operating mode on ground.
The test function conversion control circuit of this network cable/module connectivity testing device comprises first control relay, second control relay, the 3rd control relay, the 4th control relay and first switch triode, the moving contact of described the 3rd control relay is connected in the output of the NAND gate logical block in the described level signal comparison circuit, and its normally-closed contact connects the base stage with described first switch triode, the collector electrode of this first switch triode connects power supply, its emitter is connected in the control end of first control relay, the moving contact ground connection of first control relay, its normally opened contact respectively with the control end of described second control relay, the control end of each relay unit in the described switching relay group all is connected, the moving contact of described second control relay connects power supply, its normally opened contact respectively with the control end of described the 3rd control relay and the 4th control relay, the power supply of function of short circuit detection module is connected, the moving contact ground connection of the 4th control relay, its normally opened contact is connected with the ground of described function of short circuit detection module.
The function of short circuit detection module of this network cable/module connectivity testing device comprises lacks one light-emitting diode than the holding wire quantity in the described network cable/module, sample resistance and detect comparison circuit, and described light-emitting diode and sample resistance are serially connected with between power supply and the ground successively, between each circuit element of the series circuit that the normally opened contact of each relay unit in the described switching relay group inserts described light-emitting diode and sample resistance successively and constituted, described detection comparison circuit inserts between described sample resistance and the light-emitting diode, and the output of this detection comparison circuit is connected with described display alarm functional module.
The detection comparison circuit of this network cable/module connectivity testing device comprises the level comparing unit, adjustable reference level generation unit, second switch triode and controlling alarm relay, the negative input end of described level comparing unit is connected between described sample resistance and the light-emitting diode, described adjustable reference level generation unit comprises fixed resistance and the adjustable resistance that is serially connected with successively between power supply and the ground, the slidable adjustment end of described adjustable resistance is connected in the positive input terminal of described level comparing unit, and the output of this level comparing unit is connected in the base stage of described second switch triode, the grounded emitter of this second switch triode, its collector electrode is connected to the control end of this controlling alarm relay, the moving contact of this controlling alarm relay is connected to power supply, and its normally opened contact is connected with described display alarm functional module.
The display alarm functional module of this network cable/module connectivity testing device comprises staggered indicator light group and the sound light alarming circuit of detecting of open circuit, described open circuit is staggered detect the indicator light group comprise with described network cable/module in the corresponding light-emitting diode of holding wire quantity, the minus earth of described each light-emitting diode, its positive pole is connected in the output of corresponding level comparing unit in the described level signal comparison circuit, described sound light alarming circuit one end ground connection, the other end is connected in the normally opened contact of described controlling alarm relay.
Adopted the network cable/module connectivity testing device of this invention, because it has adopted the means that different reference voltage signals are provided simultaneously to differentiate open circuit and staggered situation, level by the series diode group changes the discriminating short-circuit conditions, and finish test function conversion by the relay group, carrying out test result by the display alarm functional module simultaneously shows, thereby the whole test process time is very short, circuit response time is about the response time of twice relay, less than 50ms, thereby realized the quick test of network cable/module connectivity, not only simple and practical, and use efficient and convenient, stable and reliable working performance, the scope of application are comparatively extensive, give people's work and produce all to bring great convenience.
Description of drawings
Fig. 1 is the open circuit/staggered measuring ability module operation principle schematic diagram in the network cable/module connectivity testing device of the present invention.
Fig. 2 is the test function conversion functional module operation principle schematic diagram in the network cable/module connectivity testing device of the present invention.
Function of short circuit detection module operation principle schematic diagram in Fig. 3 network cable/module connectivity testing device of the present invention.
Display alarm functional module operation principle schematic diagram in Fig. 4 network cable/module connectivity testing device of the present invention.
The integrated testability process schematic diagram of Fig. 5 network cable/module connectivity testing device of the present invention.
Fig. 6 is the integrated circuit schematic diagram of network cable/module connectivity testing device of the present invention.
Embodiment
In order more to be expressly understood technology contents of the present invention, describe in detail especially exemplified by following examples.
See also Fig. 1 to shown in Figure 6, this network cable/module connectivity testing device comprises:
(1) the staggered measuring ability module of open circuit---whether each the root holding wire that detects in the network cable/module exists open circuit or staggered.
Wherein, the staggered measuring ability module of described open circuit comprises fixed partial pressure level signal generation circuit, level signal comparison circuit, adjustable reference level generation circuit, first network cable/module detects interface and second network cable/module detects interface, and described fixed partial pressure level signal produces the corresponding level signal V of holding wire quantity in circuit generation and the described network cable/module
Bi, described adjustable reference level produces the corresponding level signal V of holding wire quantity in circuit generation and the described network cable/module
AiInclude in the described level signal comparison circuit with described network cable/module in corresponding level comparing unit of holding wire quantity and NAND gate logical block, the output of described each level comparing unit is connected to the corresponding input of this NAND gate logical block, wherein V respectively
AiWith V
BiBetween satisfy following relation:
...＜V
B (i-1)＜V
A (i-1)＜V
Bi＜V
Ai＜V
B (i+1)＜V
A (i+1)＜... i is a positive integer;
Described network cable/module is serially connected with first network cable/module and detects between interface and second network cable/module detection interface, and described fixed partial pressure level signal produces the level signal V that circuit produced
BiDetect interface, network cable/module and second network cable/module by described first network cable/module successively and detect the negative input end that interface is sent into the corresponding level comparing unit in the described level signal comparison circuit, described adjustable reference level produces the level signal V that circuit produced
AiSend into the positive input terminal of the corresponding level comparing unit in the described level signal comparison circuit.
Simultaneously, this fixed partial pressure level signal generation circuit comprises than level signal V
BiMany one of quantity be serially connected with resistance between power supply and the ground successively, the lead-out wire signal between adjacent two resistance is as level signal V
Bi
This adjustable reference level produces circuit and comprises and level signal V
AiThe corresponding adjustable reference level of quantity generation unit, each adjustable reference level generation unit includes adjustable resistance and the fixed resistance that is serially connected with successively between power supply and the ground, the slidable adjustment end of described adjustable resistance is as level signal V
Ai
(2) test function conversion functional module---under the condition that the staggered measuring ability module of open circuit is passed through the detection of network cable/module, carry out control transformation, described network cable/module is carried out short-circuit detecting.
Described test function conversion functional module comprises switching relay group and test function conversion control circuit, comprises and level signal V in the described switching relay group
BiThe corresponding relay unit of quantity, the moving contact of described each relay unit detects interface with described first network cable/module and is connected, its normally opened contact is connected in described function of short circuit detection module, and described level signal level signal V
BiSend into the normally-closed contact of corresponding relay unit respectively, described test function conversion control circuit receives the output end signal of the NAND gate logical block in the described level signal comparison circuit, and this test function conversion control circuit is controlled the contacts status of each relay unit in the described switching relay group, and controls the power supply of described function of short circuit detection module and the on off operating mode on ground.
Wherein, described test function conversion control circuit comprises first control relay, second control relay, the 3rd control relay, the 4th control relay and first switch triode, the moving contact of described the 3rd control relay is connected in the output of the NAND gate logical block in the described level signal comparison circuit, and its normally-closed contact connects the base stage with described first switch triode, the collector electrode of this first switch triode connects power supply, its emitter is connected in the control end of first control relay, the moving contact ground connection of first control relay, its normally opened contact respectively with the control end of described second control relay, the control end of each relay unit in the described switching relay group all is connected, the moving contact of described second control relay connects power supply, its normally opened contact respectively with the control end of described the 3rd control relay and the 4th control relay, the power supply of function of short circuit detection module is connected, the moving contact ground connection of the 4th control relay, its normally opened contact is connected with the ground of described function of short circuit detection module.
(3) function of short circuit detection module---detect between each the root holding wire in the described network cable/module whether have short circuit.
Described function of short circuit detection module comprises lacks one light-emitting diode than the holding wire quantity in the described network cable/module, sample resistance and detect comparison circuit, and described light-emitting diode and sample resistance are serially connected with between power supply and the ground successively, between each circuit element of the series circuit that the normally opened contact of each relay unit in the described switching relay group inserts described light-emitting diode and sample resistance successively and constituted, described detection comparison circuit inserts between described sample resistance and the light-emitting diode, and the output of this detection comparison circuit is connected with described display alarm functional module.
Wherein, this detection comparison circuit comprises the level comparing unit, adjustable reference level generation unit, second switch triode and controlling alarm relay, the negative input end of described level comparing unit is connected between described sample resistance and the light-emitting diode, described adjustable reference level generation unit comprises fixed resistance and the adjustable resistance that is serially connected with successively between power supply and the ground, the slidable adjustment end of described adjustable resistance is connected in the positive input terminal of described level comparing unit, and the output of this level comparing unit is connected in the base stage of described second switch triode, the grounded emitter of this second switch triode, its collector electrode is connected to the control end of this controlling alarm relay, the moving contact of this controlling alarm relay is connected to power supply, and its normally opened contact is connected with described display alarm functional module.
(4) display alarm functional module---indicate staggered measuring ability module of described open circuit and function of short circuit detection module whether the detection of network cable/module is passed through respectively.
Described display alarm functional module comprises staggered indicator light group and the sound light alarming circuit of detecting of open circuit, described open circuit is staggered detect the indicator light group comprise with described network cable/module in the corresponding light-emitting diode of holding wire quantity, the minus earth of described each light-emitting diode, its positive pole is connected in the output of corresponding level comparing unit in the described level signal comparison circuit, described sound light alarming circuit one end ground connection, the other end is connected in the normally opened contact of described controlling alarm relay.
In the middle of practical application, circuit of the present invention mainly comprises the staggered measuring ability module of open circuit, test function conversion functional module, function of short circuit detection module, four part compositions of display alarm functional module, the staggered measuring ability module of described open circuit is connected with described function of short circuit detection module by described test function conversion functional module, and the staggered measuring ability module of described open circuit all is connected with described display alarm functional module with the function of short circuit detection module.
See also shown in Figure 1 earlier, for open circuit/staggered testing circuit, wherein comprise comparator bank, fixed partial pressure level signal, adjustable level reference, 10～R18 forms fixed partial pressure by resistance R, produce 8 different level signals, be distributed between 0～12V, form basic interval uniformly, 8 comparator unit of injection-end.Simultaneously, each comparator unit+end builds the adjustable voltage benchmark of being made up of adjustable resistance VR1～VR8 and fixed resistance R1～R8 respectively.
Tested cable/module links to each other the fixed partial pressure signal by the normally-closed contact of relay group with "-" end of comparator bank, under normal situation about connecting one by one, by debugging, "+" end level that makes each comparator is a little more than-end, and be lower than a last fixed partial pressure level, produce high level output.
Fixed partial pressure signal Vb and adjustable reference voltage Va relation are as follows:
Vb1＜Va1＜Vb2＜Va2＜Vb3＜Va3＜Vb4＜Va4＜Vb5＜Va5＜Vb6＜Va6＜Vb7＜Va7＜Vb8＜Va8
Under open circuit conditions, the comparator negative terminal loses the fixed partial pressure signal, forms vacant state, and its level is treated as high level, and the comparator output switching activity is low.
Occurring under the staggered situation of two lines, two corresponding comparators-the input generation is staggered, and one of them "-" end is obtained higher incoming level, and necessarily is higher than its "+" end (by above-listed relational expression as can be known), thereby make comparator output overturn output low level.
If the open circuit situation occurs, this road signal of sending into comparator is unsettled, and comparator is treated as high level and handled, and makes Vi＞Vo cause output low level, makes gate circuit keep high level; If staggered situation occurs, make the signal generation entanglement of sending into two comparators, cause one of them abnormal state upset, output low level and make gate circuit keep high level.
Under the qualified situation of tested cable/module, each comparator output high level signal, 13 input nand gate circuit that constitute by 74LS133 of common injection, it is low that its logical implication is that overall height goes out, have and hang down height, 5 no idle input termination high level, detect under the qualified situation like this, 8 tunnel inputs are high level, gate circuit output low level signal if detection is defective, one or above low level input will occur, thereby make gate circuit output high level signal, finished open circuit/staggered measuring ability.It is qualified to detect, and will change the function of short circuit detection state over to by function conversion circuit, as defective, will stop to detect, and relevant indicator light is indicated the fault point of makeing mistakes, so that check.
See also shown in Figure 2 again, the realization of translation function is to be undertaken by the upset of a group relay, the moving contact of this relay group is connected on an end of product to be measured, normally-closed contact is connected in open circuit/staggered detection module, normally opened contact is connected in the short-circuit detecting module, only after open circuit/staggered measuring ability passes through, just can the trigger relay group overturn, and enter the short-circuit detecting course of work.
Wherein, this function conversion circuit has comprised 8 switching relay groups and some auxiliary relays, and major function is after open circuit/staggered detection is qualified, enters the short-circuit detecting operating state, and prevents unsettled detected state.Relay J 1～J8 constitutes 8 relay groups, and its normally-closed contact is used for open circuit/staggered detection, receives the fixed partial pressure circuit, and normal opened contact is used for short-circuit detecting circuit, receives the short-circuit detecting plate.The course of work of whole change-over circuit is: when beginning to detect, relay group normally-closed contact is connected on open circuit/staggered loop of detecting, the testing of at first opening a way/interlock, detect qualified after, by 74LS133 gate circuit output low level signal, promote relay J 10 upsets, provide the work of relay group required power supply ground end, the relay group is overturn, (promptly cause the variation of gate circuit incoming level for the unsteadiness that prevents two kinds of detected states simultaneously owing to the conversion of relay group, gate circuit output is overturn again to high, thereby return the open circuit detected state, make entire circuit work in the labile state of a circulation then), need to disconnect the output of open circuit/staggered testing circuit, be gate circuit output,, make it no longer return the open circuit detected state by relay J 12 shutoff door circuit output signals.The upset of J10, drive relay J 11 simultaneously, providing short-circuit detecting circuit required working power 12V anode, the J12 shutoff door circuit output signal that this 12V driven is above-mentioned, drive the J13 action simultaneously, the ground end signal of the required working power of short-circuit detecting circuit is provided.Like this, after having accomplished only opening a way/interlocking detection is passed through, just provide the short-circuit detecting working power, it is started working, and final testing result is provided.
See also shown in Figure 3 again, after the function conversion circuit action, test product is access in the short-circuit test module, each port of product is access in each node of the light-emitting diode of one group of series connection, a this luminous tube group and a sampling (current limliting of holding concurrently) resistance string is connected in both ends of power, and when product did not normally have short circuit phenomenon, diode was all lighted, the terminal voltage signal of sample resistance is sent into comparator, and the output of comparator can be sent and be confirmed qualified signal; If there is short circuit in certain point-to-point transmission, then the luminous tube of this point-to-point transmission is not lighted, thereby the terminal voltage of sample resistance is changed, and makes comparator output level upset thereafter, controls relevant relay, it can not be sent confirm qualified signal.
Wherein, short-circuit detecting circuit comprises and shows diode group (shared with Display and Alarm Circuit), comparator circuit.The course of work is: after open circuit/staggered detection is passed through, change-over circuit is finished conversion, short-circuit detecting circuit obtains working power, be connected to power positive end on the diode series connection group that D10～D16 forms, the lower end connects power supply ground by a sample resistance, and the voltage that sample resistance obtains is delivered to the comparator negative terminal, adjustable resistance of the positive termination of comparator obtains an adjustable reference voltage.Diode head and the tail and middle totally 8 nodes are connected to the normal opened contact of switching relay group respectively in regular turn, under the situation that does not have short circuit, regulate adjustable reference voltage, and it just can be overturn.If there is short-circuit conditions, one or above diode promptly can take place by short circuit, the sample resistance both end voltage increases, and comparator overturns, thus the realization function of short circuit detection.Short-circuit detecting is passed through, and will judge that product is qualified, drives sound and light alarm, and indication detects qualified passing through; Otherwise, will sound and light alarm not take place, illustrate that product is defective, can judge the place, fault point by viewing lamp.
See also shown in Figure 4 again, this display alarm functional module mainly comprises indicator light, the buzzer that open circuit/staggered detection indicator light group (green), short-circuit detecting indicator light group (redness) and sound and light alarm are used, Display and Alarm Circuit comprises open circuit/staggered indication diode group and short-circuit detecting indication diode group of detecting, the former is directly driven by the output of the comparator bank in open circuit/staggered testing circuit, accomplish corresponding one by one, the position that open circuit takes place or interlock will can not lighted, thereby be convenient to the analytic product defective.The short-circuit detecting indication diode group course of work illustrates in the short-circuit detecting circuit principle.
See also again shown in Figure 5, use that this network cable/module connectivity testing device tests the integrated testability process may further comprise the steps:
(1) opens the tester mains switch, place product to be measured, begin test process by die pressing product;
(2) signal of injecting varying level for each port of module (wire jumper) compares the voltage reference of output signal and inner setting, can judge whether have open circuit, the situation of interlocking;
(3) after open circuit/staggered detection was passed through, low level signal of gate circuit output drove the action of relay group, changed the short-circuit detecting operating state over to from the open circuit/detected state that interlocks;
(4) after the function conversion circuit action, each port of module to be measured (wire jumper) is access in each node of the red light emitting diodes group of a series connection, this diode winding by measuring the variation of electric current therebetween, can judge whether to exist short circuit phenomenon between one group of positive-negative power;
(5) in open circuit/staggered testing process, the conducting situation of every pair of port of one group of green diode indication is arranged, open circuit or staggered takes place, corresponding diode will not lighted; In the short-circuit detecting process, the red diode of one group of series connection is arranged, when not having short circuit phenomenon, all light, when short circuit phenomenon was arranged, the internodal diode of short circuit will not lighted; Qualified, the relevant actuating of relay of whole detections drives the acousto-optic indication, shows to test and passes through.
Adopted above-mentioned network cable/module connectivity testing device, because it has adopted the means that different reference voltage signals are provided simultaneously to differentiate open circuit and staggered situation, level by the series diode group changes the discriminating short-circuit conditions, and finish test function conversion by the relay group, carrying out test result by the display alarm functional module simultaneously shows, thereby the whole test process time is very short, circuit response time is about the response time of twice relay, less than 50ms, thereby realized finishing fast of network cable/module connectivity test, not only simple and practical, and use efficient and convenient, stable and reliable working performance, the scope of application are comparatively extensive, give people's work and produce all to bring great convenience.
In this specification, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (9)
1. a network cable/module connectivity testing device is characterized in that, described device comprises:
The staggered measuring ability module of open circuit, whether each the root holding wire that detects in the network cable/module exists open circuit or staggered;
The test function conversion functional module is carried out control transformation under the condition that the staggered measuring ability module of open circuit is passed through the detection of network cable/module, described network cable/module is carried out short-circuit detecting;
The function of short circuit detection module detects between each the root holding wire in the described network cable/module whether have short circuit;
The display alarm functional module indicates staggered measuring ability module of described open circuit and function of short circuit detection module whether the detection of network cable/module is passed through respectively.
The staggered measuring ability module of described open circuit is connected with described function of short circuit detection module by described test function conversion functional module, and the staggered measuring ability module of described open circuit all is connected with described display alarm functional module with the function of short circuit detection module.
2. network cable/module connectivity testing device according to claim 1, it is characterized in that, the staggered measuring ability module of described open circuit comprises fixed partial pressure level signal generation circuit, level signal comparison circuit, adjustable reference level generation circuit, first network cable/module detects interface and second network cable/module detects interface, and described fixed partial pressure level signal produces the corresponding level signal V of holding wire quantity in circuit generation and the described network cable/module
Bi, described adjustable reference level produces the corresponding level signal V of holding wire quantity in circuit generation and the described network cable/module
AiInclude in the described level signal comparison circuit with described network cable/module in corresponding level comparing unit of holding wire quantity and NAND gate logical block, the output of described each level comparing unit is connected to the corresponding input of this NAND gate logical block, wherein V respectively
AiWith V
BiBetween satisfy following relation:
...＜V
B (i-1)＜V
A (i-1)＜V
Bi＜V
Ai＜V
B (i+1)＜V
A (i+1)＜... i is a positive integer;
Described network cable/module is serially connected with first network cable/module and detects between interface and second network cable/module detection interface, and described fixed partial pressure level signal produces the level signal V that circuit produced
BiDetect interface, network cable/module and second network cable/module by described first network cable/module successively and detect the negative input end that interface is sent into the corresponding level comparing unit in the described level signal comparison circuit, described adjustable reference level produces the level signal V that circuit produced
AiSend into the positive input terminal of the corresponding level comparing unit in the described level signal comparison circuit.
3. network cable/module connectivity testing device according to claim 2 is characterized in that, described fixed partial pressure level signal produces circuit and comprises than level signal V
BiMany one of quantity be serially connected with resistance between power supply and the ground successively, the lead-out wire signal between adjacent two resistance is as level signal V
Bi
4. network cable/module connectivity testing device according to claim 2 is characterized in that, described adjustable reference level produces circuit and comprises and level signal V
AiThe corresponding adjustable reference level of quantity generation unit, each adjustable reference level generation unit includes adjustable resistance and the fixed resistance that is serially connected with successively between power supply and the ground, the slidable adjustment end of described adjustable resistance is as level signal V
Ai
5. network cable/module connectivity testing device according to claim 2, it is characterized in that, described test function conversion functional module comprises switching relay group and test function conversion control circuit, comprises and level signal V in the described switching relay group
BiThe corresponding relay unit of quantity, the moving contact of described each relay unit detects interface with described first network cable/module and is connected, its normally opened contact is connected in described function of short circuit detection module, and described level signal level signal V
BiSend into the normally-closed contact of corresponding relay unit respectively, described test function conversion control circuit receives the output end signal of the NAND gate logical block in the described level signal comparison circuit, and this test function conversion control circuit is controlled the contacts status of each relay unit in the described switching relay group, and controls the power supply of described function of short circuit detection module and the on off operating mode on ground.
6. network cable/module connectivity testing device according to claim 5, it is characterized in that, described test function conversion control circuit comprises first control relay, second control relay, the 3rd control relay, the 4th control relay and first switch triode, the moving contact of described the 3rd control relay is connected in the output of the NAND gate logical block in the described level signal comparison circuit, and its normally-closed contact connects the base stage with described first switch triode, the collector electrode of this first switch triode connects power supply, its emitter is connected in the control end of first control relay, the moving contact ground connection of first control relay, its normally opened contact respectively with the control end of described second control relay, the control end of each relay unit in the described switching relay group all is connected, the moving contact of described second control relay connects power supply, its normally opened contact respectively with the control end of described the 3rd control relay and the 4th control relay, the power supply of function of short circuit detection module is connected, the moving contact ground connection of the 4th control relay, its normally opened contact is connected with the ground of described function of short circuit detection module.
7. network cable/module connectivity testing device according to claim 5, it is characterized in that, described function of short circuit detection module comprises lacks one light-emitting diode than the holding wire quantity in the described network cable/module, sample resistance and detect comparison circuit, and described light-emitting diode and sample resistance are serially connected with between power supply and the ground successively, between each circuit element of the series circuit that the normally opened contact of each relay unit in the described switching relay group inserts described light-emitting diode and sample resistance successively and constituted, described detection comparison circuit inserts between described sample resistance and the light-emitting diode, and the output of this detection comparison circuit is connected with described display alarm functional module.
8. network cable/module connectivity testing device according to claim 7, it is characterized in that, described detection comparison circuit comprises the level comparing unit, adjustable reference level generation unit, second switch triode and controlling alarm relay, the negative input end of described level comparing unit is connected between described sample resistance and the light-emitting diode, described adjustable reference level generation unit comprises fixed resistance and the adjustable resistance that is serially connected with successively between power supply and the ground, the slidable adjustment end of described adjustable resistance is connected in the positive input terminal of described level comparing unit, and the output of this level comparing unit is connected in the base stage of described second switch triode, the grounded emitter of this second switch triode, its collector electrode is connected to the control end of this controlling alarm relay, the moving contact of this controlling alarm relay is connected to power supply, and its normally opened contact is connected with described display alarm functional module.
9. network cable/module connectivity testing device according to claim 8, it is characterized in that, described display alarm functional module comprises staggered indicator light group and the sound light alarming circuit of detecting of open circuit, described open circuit is staggered detect the indicator light group comprise with described network cable/module in the corresponding light-emitting diode of holding wire quantity, the minus earth of described each light-emitting diode, its positive pole is connected in the output of corresponding level comparing unit in the described level signal comparison circuit, described sound light alarming circuit one end ground connection, the other end is connected in the normally opened contact of described controlling alarm relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100206812A CN101232307B (en) | 2008-02-21 | 2008-02-21 | Network cable / module connectivity testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100206812A CN101232307B (en) | 2008-02-21 | 2008-02-21 | Network cable / module connectivity testing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101232307A true CN101232307A (en) | 2008-07-30 |
| CN101232307B CN101232307B (en) | 2011-05-18 |
Family
ID=39898524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100206812A Active CN101232307B (en) | 2008-02-21 | 2008-02-21 | Network cable / module connectivity testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101232307B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540002A (en) * | 2012-02-16 | 2012-07-04 | 杭州鸿雁智能科技有限公司 | Method for detecting open circuit and short circuit of line |
| CN102608456A (en) * | 2012-03-02 | 2012-07-25 | 华为技术有限公司 | Parallel operation line failure detection device and system |
| CN103293428A (en) * | 2012-03-05 | 2013-09-11 | 张镇非 | Anti-stealing detector for cable TV system |
| CN104991164A (en) * | 2015-06-23 | 2015-10-21 | 中国电子科技集团公司第七研究所 | Cable on-line detector |
| CN110118911A (en) * | 2018-12-28 | 2019-08-13 | 贸联电子(昆山)有限公司 | USBC cable test circuit |
| CN110622626A (en) * | 2017-05-16 | 2019-12-27 | 株式会社富士 | Plasma generator |
| CN113406535A (en) * | 2021-06-17 | 2021-09-17 | 合肥京东方视讯科技有限公司 | Test board and test method for detecting electronic wire between boards |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128744Y (en) * | 1992-06-25 | 1993-03-24 | 梁正奎 | Test instrument for multicore cable |
| CN1673763A (en) * | 2004-03-24 | 2005-09-28 | 联想(北京)有限公司 | Multifunction tester for electric cable |
| CN200968976Y (en) * | 2006-10-24 | 2007-10-31 | 英业达股份有限公司 | Circuit detection apparatus |
-
2008
- 2008-02-21 CN CN2008100206812A patent/CN101232307B/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540002A (en) * | 2012-02-16 | 2012-07-04 | 杭州鸿雁智能科技有限公司 | Method for detecting open circuit and short circuit of line |
| CN102608456A (en) * | 2012-03-02 | 2012-07-25 | 华为技术有限公司 | Parallel operation line failure detection device and system |
| CN102608456B (en) * | 2012-03-02 | 2014-08-13 | 华为技术有限公司 | Parallel operation line failure detection device and system |
| CN103293428A (en) * | 2012-03-05 | 2013-09-11 | 张镇非 | Anti-stealing detector for cable TV system |
| CN103293428B (en) * | 2012-03-05 | 2015-07-22 | 张镇非 | Anti-stealing detector for cable TV system |
| CN104991164B (en) * | 2015-06-23 | 2017-12-26 | 中国电子科技集团公司第七研究所 | A kind of cable on-line checking device |
| CN104991164A (en) * | 2015-06-23 | 2015-10-21 | 中国电子科技集团公司第七研究所 | Cable on-line detector |
| CN110622626A (en) * | 2017-05-16 | 2019-12-27 | 株式会社富士 | Plasma generator |
| CN110622626B (en) * | 2017-05-16 | 2022-01-11 | 株式会社富士 | Plasma generator |
| CN110118911A (en) * | 2018-12-28 | 2019-08-13 | 贸联电子(昆山)有限公司 | USBC cable test circuit |
| CN110118911B (en) * | 2018-12-28 | 2022-02-15 | 贸联电子(昆山)有限公司 | USBC cable test circuit |
| CN113406535A (en) * | 2021-06-17 | 2021-09-17 | 合肥京东方视讯科技有限公司 | Test board and test method for detecting electronic wire between boards |
| CN113406535B (en) * | 2021-06-17 | 2023-10-24 | 合肥京东方视讯科技有限公司 | Test board and test method for detecting electronic wires between boards |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101232307B (en) | 2011-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101232307B (en) | Network cable / module connectivity testing device | |
| CN104777377B (en) | Lead-acid battery charger output characteristics detecting system and its detection method | |
| CN111157841B (en) | Fault quick positioning device for secondary circuit of electric operation type isolating switch | |
| CN204575757U (en) | Charger output characteristics automatic detection device | |
| CN208937683U (en) | A kind of photovoltaic junction box diode characteristic detection device | |
| CN110045222A (en) | A kind of method for diagnosing faults of fan driving stage | |
| WO2013182440A2 (en) | Method for determining the internal ohmic resistance of a battery module, battery management system and motor vehicle | |
| CN202256549U (en) | Broken line detection circuit for high voltage transmission lines | |
| CN2552009Y (en) | Network cable fault measurer | |
| CN201254918Y (en) | Garage gate control system | |
| CN100413141C (en) | Galvanic battery with detection unit | |
| CN106199318B (en) | A kind of Intelligent line inspection instrument applied to ammeter box | |
| CN210427772U (en) | High-voltage interlocking detection circuit | |
| CN206684537U (en) | Multifunctional ligand electric controller | |
| CN213689779U (en) | Nuclear phase instrument before distribution network lap joint | |
| CN103884957A (en) | Cable tester | |
| CN208384021U (en) | Odd even split winding displacement quality test device | |
| CN208125895U (en) | A kind of Boeing-737 NG aircraft wiper motor automatic fault diagnosis device | |
| CN112838848A (en) | Insulated gate bipolar transistor series valve structure | |
| CN203858315U (en) | PIN short circuit detection device of LED backlight module group | |
| CN218767172U (en) | Full-closed lock fault position positioning device and power supply system of subway platform door | |
| CN220491204U (en) | Two-wire system multi-wire control and detection circuit and fire alarm controller | |
| CN105070087B (en) | Intelligent traffic signal failure detector circuit | |
| CN116125315B (en) | Detection device and detection method for line misconnection of battery charge and discharge test equipment | |
| CN220357231U (en) | Wire welding quality detection and counting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |