CN205427089U - Cable switches on insulation test device - Google Patents

Abstract

The utility model relates to a cable conduction and insulation testing device, which comprises a power supply module, a first connector and a second connector matched with the cable to be tested, and the first connector is connected corresponding to the number of cores of the cable to be tested. N of N on-off indicator lights for indicating the on-off of the cable core wire and a selection switch with N contacts; one pole of each on-off indicator light is connected to the corresponding pin of the first connector, each on-off indicator light The other pole of the off indicator light is connected in parallel to one pole of the power module, and each contact of the selector switch is respectively connected to the corresponding pin of the second connector and the other pole of the power module. The conduction and insulation testing equipment for one-to-one switching cables for aviation provided by the utility model is simple in operation, reliable, fast and efficient in detection.

Description

A cable conduction and insulation test device

technical field

The utility model relates to the technical field of electronic testing, in particular to a conduction and insulation testing device for one-to-one switching cables used in aviation.

Background technique

Aviation one-to-one adapter cables are widely used in the aviation field to realize the electrical connection between airborne fire control equipment and test equipment. An aviation one-to-one transfer cable contains two aviation electrical connectors, and the pins of the two electrical connectors are connected one-to-one by wires. The pins connected by wires are electrically connected, and the pins not connected by wires are electrically insulated.

The traditional method of testing the continuity and insulation of one-to-one adapter cables used in aviation is to use a multimeter to measure, the red test lead of the multimeter touches one pin, and the black test lead touches the other pin. Judging whether the two pins are connected or insulated by the measured resistance value. The utility model patent "A Conduction and Insulation Test Method for Cable Network" with the application number of 201210176715.3 provides such a technical solution: all the connector contacts of one or more terminals of the tested cable network are short-circuited, Transfer the connectors on the other terminals to the transfer box; short the common end of the transfer box, and close the test end connected to the contact of the parallel connector; determine the resistance of the reference point; select the contact of the tested connector , use a multimeter to measure the test resistance of the contact of the tested connector and the reference point; use the test resistance to obtain the actual resistance of the signal contact of the tested connector to judge the conduction state. The above method converts the test resistance measured by the multimeter to judge the conduction state of the cable network, and the test is cumbersome and the efficiency is low.

Utility model content

The purpose of the utility model is to provide a cable conduction and insulation testing device, which is used to solve the technical problems of inconvenient testing and low efficiency of existing testing devices or methods.

In order to achieve the above object, the scheme of the present utility model includes:

A cable conduction and insulation testing device, comprising a power module, a first connector and a second connector matching the cable to be tested, the first connector and the second connector are respectively used to connect the The two ends of the cable are mated; the first connector is connected to N on-off indicators corresponding to the number of cable cores N to indicate the on-off of the cable core and a selection switch with N contacts; The two connectors are connected to the second on-off indicator light; one pole of each on-off indicator light is correspondingly connected to the corresponding pin of the first connector, and the other pole of each on-off indicator light is connected in parallel and short-circuited to the One pole of the power module, each contact of the selection switch is respectively connected to the corresponding pin of the second connector and the other pole of the power module; where N≥2.

Further, the power module is connected in series with a current-limiting resistor, a start switch and a running indicator light.

Preferably, the selector switch is a unipolar N-position band switch, the movable contact of the band switch is connected to one pole of the power module, and each static contact of the band switch is correspondingly connected to the second plug each pin of the component.

Further, the selection switch is composed of at least two band switches, the moving end of the first switch is connected to one pole of the power module, and each contact of the fixed end of the last switch is correspondingly connected to the second socket. Each pin of the component; wherein, the fixed end contact of the previous heavy switch is connected to the moving end contact of the next heavy switch.

The utility model provides an aviation one-to-one adapter cable conduction and insulation testing equipment. During use, it is only necessary to connect the aviation cable to the testing equipment, toggle the corresponding band switch, and observe whether the corresponding indicator light is on or off. It can be judged whether the corresponding pins of the aviation cable connector are connected or insulated. The testing equipment of the utility model is easy to operate, and the detection is reliable, fast and efficient. In the process of toggling the band switch, it can be judged by the state of the indicator light whether there is a short circuit in the welding wire of the tested aviation one-to-one transfer cable. and circuit breaker.

Description of drawings

Figure 1 is an overall circuit diagram of the testing device.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

The utility model provides an aviation one-to-one adapter cable conduction and insulation testing equipment. During use, it is only necessary to connect the aviation cable to the testing equipment, toggle the corresponding band switch, and observe whether the corresponding indicator light is on or off. It can be judged whether the corresponding pins of the aviation cable connector are connected or insulated. The specific overall circuit diagram is shown in Figure 1.

As can be seen from Fig. 1, the aviation one-to-one adapter cable tested in this embodiment has 30 core wires, and the XP1 and XP2 ends of the aviation one-to-one adapter cable are respectively provided with 30 core wires. Pin aviation electrical connectors XS1 and XS2. Each pin of the aviation electrical connector XP2 corresponds to an on-off indicator light used to indicate the on-off of the core wire of the one-to-one aviation transfer cable connected to the pin. Here, the on-off indicator light connected to pin 1 is named as L1, sequentially named to the on-off indicator light L30, the indicator light is a light-emitting diode that can emit green light, of course, it can also be set to other types or colors of light indicators according to needs, and the anodes of 30 light-emitting diodes are connected to XS2 correspondingly Each pin of each pin, the cathodes of 30 light-emitting diodes are shorted in parallel and then connected to the negative pole of the power supply P1 through series operation indicator L0, current limiting resistor R1, and start switch K1. The power supply P1 is a 6V DC voltage source. The negative pole of the power supply P1 is connected to the moving end SA0-0 of a unipolar three-position band switch SA0, each pole of the single-pole three-position band switch is connected to the fixed end of a single-pole ten-position band switch, and the corresponding band switch SA0 is not The moving end SA0-1 pole is connected to the moving end SA1-0 of the band switch SA1, the fixed end SA0-2 pole of the band switch SA0 is connected to the moving end SA2-0 of the band switch SA2, and the fixed end SA0-3 pole of the band switch SA0 Connect to the moving end SA3-0 of the band switch SA3; the ten poles SA1-1 to SA1-10 in the band switch SA1 are respectively connected to pins 1 to 10 of the aviation electrical connector XP1, and SA2-1 to SA2 in the band switch SA2 The ten poles -10 correspond to pins 11 to 20 of the aviation electrical connector XP1, and the ten poles SA3-1 to SA3-10 of the band switch SA3 correspond to pins 21 to 30 of the aviation electrical connector XP1. . Of course, the above naming and the corresponding connection relationship between each pin and the band switch are only for the convenience of viewing each bit and each pole of each band switch, and for the convenience of future tests. Other connection relationships or naming methods can also be used, as long as It is sufficient to connect each pole of the band switch to one pin of the aviation electrical connector XP1.

The specific circuit structure of the present invention is given above, and the test method of the cable conduction and insulation test device will be described below.

First, connect the two ends of the one-to-one aeronautical adapter cable under test to the aeronautical electrical connectors XP1 and XP2 respectively, and then start the test. Close the start switch K1, and start to toggle each band switch for testing after the running indicator light L0 glows red; first, test pin 1, and toggle the moving contact SA0-0 of the band switch SA0 to the static contact SA0 On -1, move the moving contact SA1-0 of the band switch SA1 to the static contact SA1-1, at this time, pin 1 of XS1 of the aviation electrical connector is connected to the series circuit, and observe the on-off indications LED display results, and judge the conduction and insulation characteristics of the aviation one-to-one transfer cable, the specific judgment is as follows:

1) If the indicator light L01 is on and the other indicators L02~L30 are not on, it means that the 1 pin of XP1 of the cable under test is connected to the 1 pin of XP2 and the 1 pin of XP1 is connected to the 1 pin of XP2. The remaining pins are insulated; that is, there is no open circuit between pin 1 of XP1 and pin 1 of XP2 of the cable under test, and there is no short circuit between pin 1 of XP1 and other pins other than pin 1 of XP2 ;

2) If the indicator light L01 is on and one or more of the indicators L02~L30 (such as L03 and L04) is on, it means that the 1 pin of XP1 of the cable under test is conducting with the 1 pin of XP2 It is also connected with the corresponding pins (such as 3 pins and 4 pins) of the other bright indicators; that is to say, there is no open circuit between the 1 pin of the tested cable XP1 and the 1 pin of XP2, but the There is a short circuit between pin 1 and other pins other than pin 1 of XP2 (such as pin 3 and pin 4);

3) If the indicator light L01 is off and other indicator lights L02~L30 are off, it means that the 1 pin of XP1 is insulated from the 1 pin of XP2 of the cable under test and the 1 pin of XP1 is the same as the 1 pin of XP2. The remaining pins are insulated; that is, there is an open circuit between pin 1 of XP1 and pin 1 of XP2 of the cable under test, and there is no short circuit between pin 1 of XP1 and other pins other than pin 1 of XP2 ;

4) If the indicator light L01 is off and one or more of the indicator lights L02~L30 (such as L03 and L04) is on, it means that the 1 pin of XP1 of the tested cable is insulated from the 1 pin of XP2, but it is insulated from the 1 pin of XP2. The corresponding pins (such as 3 pins and 4 pins) of the remaining bright indicators are conducting; that is to say, there is an open circuit between the 1 pin of the tested cable XP1 and the 1 pin of XP2, and the 1 pin of XP1 There is a short circuit between the pin and other pins other than pin 1 of XP2 (such as pin 3 and pin 4).

By analogy, toggle the band switches SA0, SA1, SA2, and SA3 to connect the remaining 2-30 pins of XS1 of the aviation electrical connector to the circuit one by one. Follow the above method to observe the state of the indicator lights L01~L30, and judge whether there is a short circuit or an open circuit between the pins of XP1 and XP2 of the cable under test.

After the test is completed, turn the switch K1 to the movable contact A1, and remove the tested aviation one-to-one transfer cable from the test equipment.

The above-mentioned embodiment provides the conduction and insulation testing device suitable for one-to-one transfer cables for aviation. As other implementation modes, it is also possible to design a device for testing the conduction and insulation of other cables according to the idea of the utility model, and the cable The number of core wires is not limited to 30 either.

The specific embodiments of the present invention are given above, but the present invention is not limited to the described embodiments. Under the idea given by the utility model, the technical means in the above-mentioned embodiments are transformed, replaced, and modified in ways that are easy for those skilled in the art, and the functions played are the same as those of the corresponding technical means in the utility model. They are basically the same, and the purpose of the utility model is also basically the same. The technical solution formed in this way is formed by fine-tuning the above-mentioned embodiments, and this technical solution still falls within the protection scope of the utility model.

Claims (4)

1. a cable conducting insulated test device, it is characterised in that include a power module, the first plug connector matched with tested cable and the second plug connector, the first plug connector, the second plug connector are respectively used to connect the two ends grafting of cable under test and coordinate；First plug connector connects the N number of selection switch for indicating the break-make display lamp of cable core break-make and have N number of contact corresponding to tested cable core number N；Second plug connector connects the second break-make display lamp；The extremely corresponding corresponding pin connecting the first plug connector of the one of each break-make display lamp, connecting a pole of described power module after the another one of each break-make display lamp short circuit extremely in parallel, described selection switchs each contact and connects the corresponding pin of the second plug connector and an other pole of described power module respectively；Wherein N >=2.

A kind of cable conducting insulated test device the most according to claim 1, it is characterised in that described power module is also in series with current-limiting resistance, activate switch and run indicator.

A kind of cable conducting insulated test device the most according to claim 1, it is characterized in that, described selection switch is the band switch of an one pole N position, the movable contact of described band switch connects a pole of power module, and each stationary contact correspondence of described band switch connects each pin of described second plug connector.

A kind of cable conducting insulated test device the most according to claim 3, it is characterized in that, described selection switch is made up of the most double band switch, the moved end of the first master switch connects a pole of described power module, and each contact correspondence of the not moved end of last master switch connects each pin of described second plug connector；Wherein, the motionless terminal contacts of a upper master switch connects the contact, moved end of next master switch.