CN2085970U

CN2085970U - Measurer for flat cable

Info

Publication number: CN2085970U
Application number: CN 91213302
Authority: CN
Inventors: 程崇书; 贾志敏; 姚平壤
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-03-08
Filing date: 1991-03-08
Publication date: 1991-10-02

Abstract

The utility model provides a measurer for flat cable, which can quickly and reliably check whether the flat cable (comprising the plugs at the both ends) having fault, namely, whether a broken circuit or a short circuit phenomenon occurs. The utility model is composed of a testing part and a controlling part; the testing part has N groups of testing circuits, and each group of testing circuit has M/N testing points; each testing point is series connection composed of a diode, a luminous diode and a resistance; the controlling part has N switches corresponding to the N groups of testing circuits, and each switch is connected in parallel corresponding to a group of testing circuit. The utility model has the advantages of simple electric circuit, easy operation, low cost, high efficiency, accuracy, etc.

Description

Measurer for flat cable

What the utility model provided is a kind of flat cable tester that is used to measure the free-throw line all size.Belong to the surveying instrument technical field.

Existing the measurement of flat cable is checked that it has or not that to open circuit be to adopt manual logical line to measure to check.Obviously, not only time-consuming but also bother, and often can only be to find it to have or not breaking phenomena, whether short circuit just is difficult to find.This is quite inconvenient to the user.

The purpose of this utility model is the problem at above-mentioned existence, proposes a kind of testing tool---flat cable tester that is convenient for measuring, checks disconnected, the short circuit of flat cable.

Technical solution of the present utility model.It mainly contains control section and part of detecting.Their circuit theory is seen respectively shown in the accompanying drawing 1,2.Accompanying drawing 1,2 is two kinds of connected modes.

Be described in detail its technical solution below in conjunction with accompanying drawing:

Part of detecting is made up of N group test circuit, and every group of test circuit is made up of M/N test point, annotates: if M/N is not an integer, then round with ending method and the method for truncating, sum should equal M, for example as if M=20, and N=3, then 3 groups of numbers of test points are respectively 7,7,6.Each test point is to have a diode, a light emitting diode, a resistance to compose in series; Control section is made up of N the switch corresponding with N group test circuit, and each switch is corresponding with one group of test circuit and connect (N 〉=2, M is the measured point sum).

For detect M line (M is any positive integer) flat cable open circuit and N bar (N for more than or equal to 2 positive integer) adjacent lines between short-circuit conditions, the electrical schematic diagram of tester is shown in accompanying drawing 1 or accompanying drawing 2.

Light emitting diode, diode, resistance quantity are M in the accompanying drawing, and PLE, PLF are M line flat cable socket, SW1, and SW2 ... SWN is pushbutton switch, circuit communication when pressing switch, and circuit disconnects during not according to switch.In order to improve the automaticity of test, SW1, SW2 ... the switching function of SWN also available digital circuit is realized." bright " of light emitting diode " go out " state measurement, check the opening circuit of flat cable, short-circuit conditions.Plug with tested flat cable two ends during test inserts PLE respectively, the PLF socket, and order is pressed switch SW 1 then, SW2, SWN, do not have at tested flat cable open circuit, under the short-circuit conditions, light emitting diode LD1 when pressing switch SW 1, LD(N+1), LD(KN+1) ... (K=0,1,2, identical to give a definition) should be shinny, all the other light emitting diodes all should be not shinny; Light emitting diode LD2 when pressing switch SW 2, LD(N+2) ... LD(KN+2) ... should be shinny, all the other light emitting diodes all should be not shinny; Light emitting diode LDN when pressing switch SW N, LD2N ... LD(K+1) N ... should be shinny, all the other light emitting diodes all should be not shinny.If light emitting diode that should be bright is not bright, illustrate that then there is breaking phenomena in the corresponding line of tested flat cable, if light emitting diode that should be shinny is not bright, illustrate that then there is short circuit phenomenon in the corresponding line of tested flat cable.The effect of diode is that certain line when tested flat cable short circuit occurs thereby makes respective leds play buffer action under the shinny situation should not be bright the time in the accompanying drawing, so as not to make with this light emitting diode be subjected to all the other light emitting diodes of same switch control be subjected to crosstalking also together shinny (if together shinny just can't judge tested flat cable which be short-circuited).

PLE in the accompanying drawing, PLF available dedicated socket, but price is more expensive, and the utility model is used single or double wrapping post instead and is constituted PLE, and the PLF socket can make cost reduce more than 80%.

The usefulness of using more and more flat cable to connect in the modern electronic equipment, connection in order to ensure flat cable is reliably errorless, measurer for flat cable can check out quickly and reliably that flat cable (plug that comprises two ends) has fault-free namely to have or not and opens circuit or short circuit phenomenon, if which line that has fault can demonstrate exactly flat cable has taken place to open circuit or short circuit phenomenon. This tester have circuit simple, be easy to make advantage with low cost. Use facts have proved that this tester is easy and simple to handle, and reliable in function is easy to carry, can improve tens times of testing efficiencies and even hundreds of times compared with manual test, and has improved the reliability of test. In the electronic equipment that uses flat cable, can be used as a kind of test instrumentation commonly used and promoted the use of.

Claims

1, flat cable tester, form by test, control two parts, it is characterized in that part of detecting is made up of N group test circuit, every group of test circuit is made up of the M/N test point, (if M/N be integer, then with the ending method with go out the tail method and round, sum should equal M, if for example M=20, N=3, then three groups of numbers of test points are respectively 7,7,6) each test point is to have a diode, a light emitting diode, a resistance to compose in series; Control section is made up of N the switch corresponding with N group test circuit, and each switch is corresponding with one group of test circuit and connect (N 〉=2, M is the measured point sum).