CN111965563A - Flat cable detection device - Google Patents
Flat cable detection device Download PDFInfo
- Publication number
- CN111965563A CN111965563A CN202010717511.0A CN202010717511A CN111965563A CN 111965563 A CN111965563 A CN 111965563A CN 202010717511 A CN202010717511 A CN 202010717511A CN 111965563 A CN111965563 A CN 111965563A
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- flat cable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The application is suitable for the technical field of circuit testing and provides a flat cable detection device. The flat cable detection device is characterized in that at least one plug socket group and a plurality of diodes are arranged on a test circuit board, and each plug socket group comprises a first plug socket and a second plug socket which are respectively connected with two ends of a flat cable to be detected; a plurality of first pins in the first wire inserting seat are used for receiving test signals sent by the testing machine, and a plurality of second pins in the second wire inserting seat are respectively and correspondingly connected with anodes of a plurality of diodes; the cathodes of the plurality of diodes are connected to power ground. The testing machine sequentially transmits the testing signals to the N diodes in the plurality of diodes through the N wires of the flat cable to be tested, and measures currents or voltages at two ends of the N diodes to judge whether the N wires are open or short-circuited, and can sequentially detect whether the N wires are open or short-circuited.
Description
Technical Field
The application belongs to the technical field of circuit testing, and particularly relates to a flat cable detection device.
Background
In the field of circuits, flat cables are widely used, and are a main connecting tool among a plurality of components. When the existing chip is tested, a flat cable is needed to be used for connecting a testing machine and a testing probe, and then the chip is tested, however, the flat cable is easy to damage after being used for many times, and the damaged flat cable can cause that the test result of the chip is not ready. The existing methods for detecting the quality of the flat cable are all manually checking one by using a universal meter, so that the detection efficiency is low.
Disclosure of Invention
The embodiment of the application provides a winding displacement detection device, and can solve the problem that the existing winding displacement detection efficiency is low.
The embodiment of the application provides a winding displacement detection device, includes: the testing device comprises a testing machine and a testing circuit board connected with the testing machine;
the test circuit board is provided with at least one socket group and a plurality of diodes; each wire socket group comprises a first wire socket and a second wire socket which are respectively connected with two ends of a to-be-tested flat cable; a plurality of first pins in the first wire inserting seat are used for receiving test signals sent by the testing machine, and a plurality of second pins in the second wire inserting seat are respectively and correspondingly connected with anodes of the plurality of diodes; the cathodes of the plurality of diodes are connected with a power ground;
the to-be-tested flat cable comprises N conducting wires, wherein two ends of each conducting wire are respectively connected with the corresponding first pin and the second pin, and N is a positive integer;
the tester is used for respectively transmitting test signals to N diodes in the plurality of diodes through the N leads in sequence, and measuring current or voltage at two ends of the N diodes so as to judge whether the N leads are open-circuited or short-circuited.
Optionally, the test signal is a current signal; the tester is used for measuring the voltage at two ends of the diode, judging that the lead corresponding to the diode is short-circuited if the voltage at two ends of the diode is smaller than a preset first voltage threshold value, and judging that the lead corresponding to the diode is open-circuited if the voltage at two ends of the diode is larger than a preset second voltage threshold value.
Optionally, the test signal is a voltage signal; the tester is used for measuring the current at two ends of the diode, judging that the lead corresponding to the diode is short-circuited if the current at two ends of the diode is smaller than a preset current threshold value, and judging that the lead corresponding to the diode is open-circuited if the current at two ends of the diode is larger than a preset second current threshold value.
Optionally, the number of the first pins is the same as the number of the second pins.
Optionally, the number of the first pins in any one of the socket groups is 32, 50, 64 or 96.
Optionally, the number of the socket groups is 4, and the number of the first pins in the 4 socket groups is 32, 50, 64, and 96 in sequence.
Optionally, 32 first pins of the 96 first pins and 32 second pins of the 96 second pins are connected to a power ground.
Optionally, the number of the diodes is 64; and the anodes of the 64 diodes are respectively connected with 64 second pins which are not connected with the power ground in the 96 second pins in a one-to-one correspondence mode.
Optionally, the testing machine is connected to the test circuit board through a connection flat cable.
Optionally, a connection socket is further disposed on the test circuit board, one end of the connection flat cable is connected to the connection socket, and a plurality of third pins in the connection socket are correspondingly connected to the plurality of first pins.
Compared with the prior art, the embodiment of the application has the advantages that: the flat cable detection device comprises a test circuit board, a test circuit board and a plurality of flat cables, wherein the test circuit board is provided with at least one plug socket group and a plurality of diodes, and each plug socket group comprises a first plug socket and a second plug socket which are respectively connected with two ends of a flat cable to be detected; a plurality of first pins in the first wire inserting seat are used for receiving test signals sent by the testing machine, and a plurality of second pins in the second wire inserting seat are respectively and correspondingly connected with the anodes of the diodes; the cathodes of the plurality of diodes are connected to a power ground. The testing machine sequentially transmits the testing signals to the N diodes in the plurality of diodes through the N wires of the flat cable to be tested, and measures currents or voltages at two ends of the N diodes to judge whether the N wires are open or short-circuited, and can sequentially detect whether the N wires are open or short-circuited.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flat cable detection device according to an embodiment of the present application;
fig. 2 is a schematic view of a working flow of the flat cable detection device in the embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a flat cable detection device according to an embodiment of the present disclosure. This winding displacement detection device includes: a testing machine 10 and a testing circuit board 20 connected with the testing machine 10;
the test circuit board 20 is provided with at least one socket group 21 and a plurality of diodes 22; each of the socket groups 21 includes a first socket 211 and a second socket 212 for respectively connecting with two ends of the flat cable 30 to be tested; a plurality of first pins in the first wire holder 211 are used for receiving the test signal sent by the test machine 10, and a plurality of second pins in the second wire holder 212 are respectively and correspondingly connected to the anodes of the plurality of diodes 22; the cathodes of the plurality of diodes 22 are connected to power ground;
the flat cable 30 to be tested comprises N conductive wires 31, and two ends of each conductive wire 31 are respectively connected with the corresponding first pin and the second pin, wherein N is a positive integer;
the testing machine 10 is configured to sequentially transmit the test signals to N diodes of the plurality of diodes 22 through the N wires 31, and measure currents or voltages at two ends of the N diodes 22 to determine whether the N wires 31 are open-circuited or short-circuited.
It should be noted that, in the flat cable detection device of the present application, at least one socket group 21 and a plurality of diodes 22 are disposed on the test circuit board 20, and each socket group 21 includes a first socket 211 and a second socket 222 for respectively connecting to two ends of the flat cable 30 to be detected; a plurality of first pins in the first wire holder 211 are used for receiving the test signal sent by the testing machine 10, and a plurality of second pins in the second wire holder 212 are respectively and correspondingly connected to the anodes of the plurality of diodes 22; the cathodes of the diodes 22 are connected to a power ground, the flat cable 30 to be tested includes N wires 31, and two ends of each wire 31 are respectively connected to the corresponding first pin and the second pin (that is, each wire 31 and one diode 22 of the diodes 22 form a loop, the N wires 31 and N diodes 22 of the diodes 22 form N loops, and the test machine 10 can detect the voltage or current at two ends of the diode 22 in the loop). The testing machine 10 sequentially transmits the testing signals to the N diodes 22 in the plurality of diodes 22 through the N wires 31 of the to-be-tested flat cable 30, and measures the current or voltage at the two ends of the N diodes 22 to determine whether the N wires 31 are open or short-circuited, and can sequentially detect whether the N wires 31 are open or short-circuited (that is, the testing machine 10 sequentially transmits the testing signals to the N loops to sequentially detect the quality of the wires 31 in the N loops). In addition, the flat cable 30 to be tested with different numbers of wires 31 can be correspondingly arranged corresponding to the plurality of socket groups 21, so as to improve the applicability of the flat cable detection device.
Alternatively, the test circuit board 20 may be a PCB (printed circuit board), and then may be another type of circuit board, which is not limited herein.
In one possible implementation, the test signal emitted by the test machine 10 is a current signal; the value of the current signal may be 100uA-300uA, and then may be other values, which is not limited herein. The testing machine 10 is configured to measure voltages (i.e., tube voltage drops) at two ends of the diode 22, determine that the wire 31 corresponding to the diode 22 is short-circuited if the voltages at two ends of the diode 22 are smaller than a preset first voltage threshold, and determine that the wire 31 corresponding to the diode 22 is open-circuited if the voltages at two ends of the diode 22 are larger than a preset second voltage threshold. The condition of the conducting wire 31 can be effectively reflected by using the tube voltage drop performance of the diode 22, and the testing accuracy is improved.
Alternatively, the conduction voltage drop of the diode 22 is about 0.3-0.7V, so the preset first voltage threshold may be 0.3V, the preset second voltage threshold may be 0.7V, and then other values may be also provided, which is not limited herein.
In one possible implementation, the test signal sent by the test machine 10 is a voltage signal; the voltage signal may have a value of 0.05V-2A, but may have other values as well, and is not limited herein. The testing machine 10 is configured to measure currents at two ends of the diode 22, determine that the wire 31 corresponding to the diode 22 is short-circuited if the currents at two ends of the diode 22 are smaller than a preset first current threshold, and determine that the wire 31 corresponding to the diode 22 is open-circuited if the currents at two ends of the diode 22 are larger than a preset second current threshold. The tester 10 provides a voltage signal to measure the current across the diode 22, so as to effectively reflect the condition of the conducting wire 31 and improve the testing accuracy.
Optionally, when the voltage signal has a value of 0.05V-2A, the current across the diode 22 connected to the normal wire 31 is about-10 uA to 10uA, so the preset first current threshold may be-10 uA, the preset second current threshold may be 10uA, and then other values may also be used, which is not limited herein.
In a possible implementation manner, the number of the first pins is the same as the number of the second pins, so that the two ends of the flat cable 30 to be tested are connected to the first wire holder 211 and the second wire holder 212, respectively.
Optionally, since the common flat cable generally has 32 wires, 50 wires, 64 wires and 96 wires, the number of the first pins in any one of the socket groups 21 may be 32, 50, 64 or 96, that is, the flat cable 30 to be tested corresponding to different numbers of the wires 31 may be correspondingly provided with the first socket 211 and the second socket 212 having the first pins in accordance with the number of the wires 31, so as to improve the applicability of the flat cable detection device.
Optionally, for more convenient and fast detection of the flat cable, the number of the socket groups 21 is set to 4, and the number of the first pins in the 4 socket groups 21 is 32, 50, 64, and 96 in sequence, that is, the 4 socket groups 21 are set to respectively correspond to the flat cables 30 to be detected of the commonly used 4 numbers of different wires 31.
Optionally, since the to-be-tested flat cable 30 with 96 wires 31 generally needs to have interference resistance, 32 wires 31 of the 96 wires 31 of the to-be-tested flat cable 30 need to be grounded, and therefore, when the number of the first pins and the second pins is 96, 32 first pins of the 96 first pins and 32 second pins of the 96 second pins are both connected with the power ground, so that the socket group 21 can be adapted to the to-be-tested flat cable 30 with 96 wires 31.
Optionally, 32 grounded wires 31 in the flat cable 30 to be tested with 96 wires 31 do not need to be measured, so the number of the diodes 22 may be 64, the anodes of the 64 diodes may be respectively connected to 64 second pins, which are not connected to the power ground, of the 96 second pins in a one-to-one correspondence manner, and the flat cable 30 to be tested with 4 commonly used wires 31 of different numbers can be tested by setting the 64 diodes 22, so that the flat cable testing device has a simple structure and high applicability.
In a possible implementation manner, the testing machine 10 is connected to the testing circuit board 20 through a connection flat cable, and the connection flat cable can effectively transmit the testing signals sent by the testing machine 10 to the plurality of first pins in the first socket 211 in sequence.
Optionally, the test circuit board 20 is further provided with a connection socket 40, one end of the connection flat cable is connected to the connection socket 40, and a plurality of third pins in the connection socket 40 are correspondingly connected to the plurality of first pins. When the maximum number of the first pins is 96, the number of the third pins may be 96, that is, the number of the third pins is equal to the maximum number of the first pins, so that all the socket groups 21 on the test circuit board 20 can normally receive the test signal sent by the test machine 10.
With reference to fig. 2, in an application scenario, the working process of the flat cable detection device for detecting the flat cable may be as follows:
different detection parameters are set by the application program in the testing machine 10 corresponding to different socket groups 21, and the different detection parameters can be displayed in the selection output interface of the testing machine 10 for the tester to select (for example, the socket group 21 corresponding to 32 first pins in the interface displays the first parameter, the socket group 21 corresponding to 50 first pins displays the second parameter, and so on);
when the to-be-tested flat cable 30 is connected to the corresponding socket group 21, the testing machine 10 outputs the detection parameters corresponding to the socket group 21, and sequentially outputs the test signals to each first pin in the socket group 21, so that the test signals are respectively transmitted to the corresponding N diodes through the N wires 31 of the to-be-tested flat cable 30 in sequence, and the current or voltage at two ends of the N diodes 22 is measured to judge whether the N wires 31 are open-circuited or short-circuited;
the subsequent testing machine 10 may further respectively display the test result (normal, open, or short) of each conductive line 31, when the test result of each conductive line 31 is normal, the testing machine 10 determines that the flat cable 30 to be tested is normal, and displays the normal test result on the selected output interface (i.e. BIN1 shown in the figure), when the test result of at least one conductive line 31 is open or short, the testing machine 10 determines that the flat cable 30 to be tested is abnormal, and displays the abnormal test result on the selected output interface, and displays the conductive line 31 with an open or short circuit (i.e. the conductive line 31 shown in the figure displays a PIN corresponding to failure, and displays an open or short circuit of the PIN through the programming language datalog).
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A flat cable detection device, comprising: the testing device comprises a testing machine and a testing circuit board connected with the testing machine;
the test circuit board is provided with at least one socket group and a plurality of diodes; each wire socket group comprises a first wire socket and a second wire socket which are respectively connected with two ends of a to-be-tested flat cable; a plurality of first pins in the first wire inserting seat are used for receiving test signals sent by the testing machine, and a plurality of second pins in the second wire inserting seat are respectively and correspondingly connected with anodes of the plurality of diodes; the cathodes of the plurality of diodes are connected with a power ground;
the to-be-tested flat cable comprises N conducting wires, wherein two ends of each conducting wire are respectively connected with the corresponding first pin and the second pin, and N is a positive integer;
the tester is used for respectively transmitting test signals to N diodes in the plurality of diodes through the N leads in sequence, and measuring current or voltage at two ends of the N diodes so as to judge whether the N leads are open-circuited or short-circuited.
2. The flat cable detecting device according to claim 1, wherein the test signal is a current signal; the tester is used for measuring the voltage at two ends of the diode, judging that the lead corresponding to the diode is short-circuited if the voltage at two ends of the diode is smaller than a preset first voltage threshold value, and judging that the lead corresponding to the diode is open-circuited if the voltage at two ends of the diode is larger than a preset second voltage threshold value.
3. The flat cable detecting device according to claim 1, wherein the test signal is a voltage signal; the tester is used for measuring the current at two ends of the diode, judging that the lead corresponding to the diode is short-circuited if the current at two ends of the diode is smaller than a preset current threshold value, and judging that the lead corresponding to the diode is open-circuited if the current at two ends of the diode is larger than a preset second current threshold value.
4. The flat cable detecting device according to claim 1, wherein the number of the first pins is the same as the number of the second pins.
5. The cable arrangement detecting device of claim 4, wherein the number of the first pins in any one of the jack groups is 32, 50, 64 or 96.
6. The cable assembly detecting device according to claim 4, wherein the number of the jack groups is 4, and the number of the first pins in the 4 jack groups is 32, 50, 64, and 96 in this order.
7. The flat cable detection device according to claim 6, wherein 32 first pins of the 96 first pins and 32 second pins of the 96 second pins are connected to a power ground.
8. The flat cable detecting device according to claim 7, wherein the number of the diodes is 64; and the anodes of the 64 diodes are respectively connected with 64 second pins which are not connected with the power ground in the 96 second pins in a one-to-one correspondence mode.
9. The flat cable detecting device according to claim 1, wherein the testing machine is connected to the test circuit board by a connection flat cable.
10. The flat cable detection device according to claim 9, wherein a connection socket is further disposed on the test circuit board, one end of the connection flat cable is connected to the connection socket, and a plurality of third pins in the connection socket are correspondingly connected to the plurality of first pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717511.0A CN111965563A (en) | 2020-07-23 | 2020-07-23 | Flat cable detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717511.0A CN111965563A (en) | 2020-07-23 | 2020-07-23 | Flat cable detection device |
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| CN111965563A true CN111965563A (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010717511.0A Pending CN111965563A (en) | 2020-07-23 | 2020-07-23 | Flat cable detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN113687219A (en) * | 2021-09-15 | 2021-11-23 | 上海华岭集成电路技术股份有限公司 | On-line detection method of test board |
| US11372057B2 (en) * | 2019-08-21 | 2022-06-28 | Tyco Electronics (Shanghai) Co. Ltd. | Flexible flat cable testing system |
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Address after: 518000 1st, 5th and 6th floors of No. 1 workshop, No. 28 Qingfeng Avenue, Baolong Street, Longgang District, Shenzhen City, Guangdong Province Applicant after: Shenzhen mifitech Technology Co.,Ltd. Address before: 518000 1st, 5th and 6th floors of No. 1 workshop, No. 28 Qingfeng Avenue, Baolong Street, Longgang District, Shenzhen City, Guangdong Province Applicant before: Shenzhen Mifeitake Technology Co.,Ltd. |
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Application publication date: 20201120 |
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