A quick diagnosis device for ICT test flat cable

Abstract

The utility model discloses a kind of ICT test wire harness's quick diagnosis device, belong to electronic testing technical field;The device includes shell, test interface module, on-off control module, distributed state indicating module and vibration excitation module;The distributed state indicating module uses the mode of setting double-color LED lamp at each test point side, directly maps fault information on physical circuit;The vibration excitation module is integrated in test interface vicinity, is composed of micro vibration motor and control system, can produce standardization, controllable mechanical vibration, effectively induces virtual connection fault appearance;The utility model is combined distributed state indicating and active vibration excitation, realizes the quick, accurate, intuitive diagnosis of ICT test wire harness open circuit and virtual connection fault, greatly improves detection efficiency and reliability, reduces the technical requirement of operator.

Description

Technical Field

[0001] This utility model relates to the field of electronic testing technology, and in particular to a rapid diagnostic device for cable faults in ICT testing equipment, especially a cable diagnostic device that can effectively detect loose connection faults. Background Technology

[0002] ICT testing equipment is an important tool in the electronics manufacturing industry for detecting the soldering status, component values, and circuit connectivity of components on PCBs. It makes contact with the solder joints on the PCB through a bed of test probes, and then transmits the signals to the control board for analysis and processing through multiple ribbon cables. Due to the frequent plugging and unplugging, bending, and aging of ribbon cables in the production environment, they are prone to faults such as open circuits and loose connections.

[0003] Loose connection faults are a particularly difficult type of fault to detect. They are characterized by the fact that under static conditions, the line may appear to be conducting normally; however, when subjected to vibration, temperature changes, or mechanical stress, the connection resistance will fluctuate, leading to intermittent continuity faults. In actual use, this type of fault will cause unstable test results, a high misjudgment rate, and seriously affect production efficiency and product quality.

[0004] Currently, the common method for detecting ribbon cable faults is to use a multimeter to measure the continuity of each cable. For loose connections, operators usually need to manually shake the ribbon cable while observing the changes in the multimeter reading. This method has the following obvious drawbacks:

[0005] 1. The detection efficiency is low, requiring testing one path at a time, which is time-consuming;

[0006] 2. Manual shaking cannot provide standardized and repeatable mechanical stress, resulting in highly subjective test results;

[0007] 3. Minor loose connections are difficult to detect, resulting in insufficient reliability of the detection.

[0008] 4. Operators need to have a high level of technical experience and focus;

[0009] 5. Test results rely on manual recording, which is prone to errors and makes traceability and analysis difficult;

[0010] Therefore, there is an urgent need in this field for a dedicated device that can quickly, accurately, and intuitively diagnose ICT test cable faults, especially loose connection faults, in order to improve detection efficiency and reliability and reduce reliance on operator skills. Utility Model Content

[0011] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rapid diagnostic device for ICT test cables. It is specifically optimized for the detection of loose connection faults, enabling rapid and accurate diagnosis of cable faults. It features easy operation, intuitive display, and reliable detection.

[0012] To achieve the above objectives, this utility model provides a rapid diagnostic device for ICT test cables, comprising a housing, a test interface module, a continuity control module, a power interface, a distributed status indicator module, and a vibration excitation module. The housing has an internal mounting cavity and an external operation panel. The test interface module is fixedly mounted on the front panel of the housing for connecting the cable under test. The continuity control module is fixedly mounted in the mounting cavity and electrically connected to the test interface module via internal wires. The power interface is fixedly mounted on the rear panel of the housing and electrically connected to the continuity control module via a power cord. The distributed status indicator module includes multiple status indicator units, each corresponding to a test channel and positioned near the physical location of the corresponding test point. The vibration excitation module is positioned near the test interface module and applies mechanical vibration to the cable under test.

[0013] Furthermore, this utility model provides a rapid diagnostic device for ICT test cables, wherein the vibration excitation module includes at least one miniature vibration motor, a motor drive circuit, and a vibration control unit; the miniature vibration motor is fixed to the test interface module by a mounting bracket, the motor drive circuit is mounted on the circuit board of the on / off control module, and the vibration control unit is integrated into the main controller of the on / off control module.

[0014] Furthermore, this utility model provides a rapid diagnostic device for ICT test cables, wherein the vibration control unit can generate multiple vibration modes, including continuous vibration mode, intermittent vibration mode and frequency sweep vibration mode; the vibration frequency range is 10Hz to 200Hz, and the vibration amplitude is adjustable.

[0015] Furthermore, this utility model provides a rapid diagnostic device for ICT test cables, wherein the micro vibration motor is an eccentric rotor motor or a linear resonant motor, its installation position is parallel to the contact surface of the cable under test, and the vibration transmission direction is perpendicular to the plane of the cable under test.

[0016] Furthermore, this utility model provides a rapid diagnostic device for ICT test cables, wherein the status indicator unit is a dual-color LED light, installed next to the probe of each test channel and electrically connected to the continuity control module, used to display the continuity status of the corresponding test channel: a solid green light indicates continuity, a solid red light indicates an open circuit, and alternating red and green flashing indicates abnormal resistance or loose connection.

[0017] The rapid diagnostic device for ICT test cables provided by this utility model has the following advantages compared with the prior art:

[0018] 1. High reliability of loose connection detection: Through standardized and controllable mechanical vibration, the loose connection fault is effectively induced to appear, solving the inconsistency problem of manual shaking;

[0019] 2. Intuitive and efficient fault location: Distributed status indicators directly map fault information to physical locations, eliminating the need for operators to switch their line of sight between the device and the wiring, thus greatly shortening fault location time;

[0020] 3. Flexible and diverse detection modes: It offers a variety of vibration modes and intensity options to meet the needs of detecting loose connection faults of varying severity;

[0021] 4. Simple operation, no training required: Intuitive instructions and simple operating procedures reduce the technical requirements for operators;

[0022] 5. High degree of automation: It integrates vibration excitation and fault diagnosis, reducing the impact of human factors on the test results. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a rapid diagnostic device for ICT test cables according to this utility model.

[0024] The components include: 1. Housing; 2. Test interface module; 3. On / off control module; 4. Power interface; 5. Cable under test; 6. Status indicator unit; 7. Vibration control unit; 8. Miniature vibration motor; 9. Motor drive circuit. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figure 1 As shown, this embodiment provides a rapid diagnostic device for ICT test cables, which includes a housing 1, a test interface module 2, a continuity control module 3, a power interface 4, a distributed status indicator module, and a vibration excitation module. The housing 1 has an internal mounting cavity and an external operation panel. The test interface module 2 is fixedly mounted on the front panel of the housing 1 for connecting the cable under test 5. The continuity control module 3 is fixedly mounted in the mounting cavity and electrically connected to the test interface module 2 via internal wires. The power interface 4 is fixedly mounted on the rear panel of the housing 1. Interface 4 is electrically connected to the on / off control module 3 via a power cord; the distributed status indication module includes multiple status indication units 6, each status indication unit 6 corresponding to a test channel and set near the physical location of the corresponding test point. The status indication unit 6 is a dual-color LED light, installed next to the probe of each test channel and electrically connected to the on / off control module 3, used to display the on / off status of the corresponding test channel: a solid green light indicates a circuit, a solid red light indicates an open circuit, and alternating red and green flashing indicates abnormal resistance or a loose connection; the vibration excitation module is set near the test interface module 2 and is used to apply mechanical vibration to the cable under test 5;

[0029] The vibration excitation module includes at least one miniature vibration motor 8, a motor drive circuit 9, and a vibration control unit 7. The miniature vibration motor 8 is fixed to the test interface module 2 by a mounting bracket. The miniature vibration motor 8 is an eccentric rotor motor or a linear resonant motor, and its installation position is parallel to the contact surface of the cable under test 5, with the vibration transmission direction perpendicular to the plane of the cable under test 5. The motor drive circuit 9 is mounted on the circuit board of the on / off control module 3. The vibration control unit 7 is integrated into the main controller of the on / off control module 3. The vibration control unit 7 can generate multiple vibration modes, including continuous vibration mode, intermittent vibration mode, and frequency sweep vibration mode. The vibration frequency range is 10Hz to 200Hz, and the vibration amplitude is adjustable.

[0030] In actual production, the ICT test cable rapid diagnostic device includes a housing 1, a test interface module 2, a continuity control module 3, a power interface 4, a distributed status indicator module, and a vibration excitation module. The housing 1 adopts a portable design, measuring 220mm × 150mm × 50mm, and is made of ABS engineering plastic with anti-slip texture and operation indicator markings on the surface. The test interface module 2 is located at the front of the housing 1 and uses a standard IDC (Internet Data Center) interface. The system features a 2×20 ribbon cable interface, compatible with 40-pin ribbon cables. The on / off control module 3 is located on the mainboard inside the housing 1, using an STM32F103 series microcontroller as the main control chip. The power interface 4 is located on the rear side of the housing 1, supporting 24V DC input, and includes an internal power management circuit providing 5V and 3.3V voltages. The distributed status indicator module includes 40 status indicator units 6, each corresponding to a test channel. Each status indicator unit 6 consists of a dual-color LED, directly installed next to each probe of the test interface, with spacing consistent with the ribbon cable pin spacing. The status indicator units 6 are directly connected to the on / off control module 3, controlled by the GPIO port of the main control chip in the on / off control module 3 through a driving circuit. Specifically, the driving circuit may include current-limiting resistors and transistor switching circuits, technologies well-known to those skilled in the art, and will not be elaborated here. The main control chip controls each dual-color LED to display red or green by controlling the output level of different GPIO ports.

[0031] This distributed layout allows operators to directly correlate the LED indicator status with the physical wiring location without having to switch their gaze back and forth between the display screen and the ribbon cable, greatly improving the efficiency of fault location.

[0032] The vibration excitation module is the core innovation of this embodiment, specifically designed to induce and detect loose connection faults. This module includes a miniature vibration motor 8, a motor drive circuit 9, a vibration control unit 7, and a mounting bracket. The miniature vibration motor 8 is a HYC-1020 eccentric rotor motor with dimensions of Φ10×20mm and a vibration frequency range of 10~200Hz. The miniature vibration motor 8 is fixed near the test interface module 2 via the mounting bracket to ensure that vibration energy can be effectively transferred to the cable connection. The motor drive circuit 9 uses a DRV8837 motor drive chip, supporting PWM control, and can precisely control the speed and vibration intensity of the miniature vibration motor 8. The vibration control unit 7 is integrated into the main control chip of the on / off control module 3 and can preset multiple vibration modes:

[0033] Continuous vibration mode: constant frequency vibration, used for general loose connection detection;

[0034] Intermittent vibration mode: Vibrate for 2 seconds, stop for 1 second, repeat in a cycle, used to observe intermittent faults;

[0035] Frequency sweep vibration mode: The frequency is gradually scanned from 10Hz to 200Hz to find the resonant frequency point;

[0036] Custom mode: Specific vibration parameters can be set via host computer software;

[0037] The usage process of the rapid diagnostic device for ICT test cables provided in this embodiment is as follows:

[0038] 1. Connect the cable under test 5 to the test interface module 2;

[0039] 2. Select the appropriate detection mode;

[0040] 3. Start the test and observe the distributed status indicators;

[0041] 4. If red and green flashing alternately, it indicates that there is a loose connection in the corresponding channel;

[0042] 5. Different vibration modes can be switched for verification as needed;

[0043] 6. After testing, remove the ribbon cable for repair or replacement.

[0044] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0045] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A rapid diagnostic device for ICT test cables, characterized in that, The system includes a housing (1), a test interface module (2), an on / off control module (3), a power interface (4), a distributed status indicator module, and a vibration excitation module. The housing (1) has an internal mounting cavity and an external operation panel. The test interface module (2) is fixedly mounted on the front panel of the housing (1) and is used to connect the cable under test (5). The on / off control module (3) is fixedly mounted in the mounting cavity and is electrically connected to the test interface module (2) through an internal wire. The power interface (4) is fixedly mounted on the rear panel of the housing (1) and is electrically connected to the on / off control module (3) through a power line. The distributed status indicator module includes multiple status indicator units (6), each of which corresponds to a test channel and is located near the physical location of the corresponding test point. The vibration excitation module is located near the test interface module (2) and is used to apply mechanical vibration to the cable under test (5).

2. The rapid diagnostic device for ICT test cables according to claim 1, characterized in that, The vibration excitation module includes at least one miniature vibration motor (8), a motor drive circuit (9), and a vibration control unit (7); the miniature vibration motor (8) is fixed to the bottom of the test interface module (2) by a mounting bracket, and the motor drive circuit (9) is mounted on the circuit board of the on / off control module (3); the vibration control unit (7) is integrated into the main controller of the on / off control module (3).

3. The rapid diagnostic device for ICT test cables according to claim 2, characterized in that, The vibration control unit (7) can generate a variety of vibration modes, including continuous vibration mode, intermittent vibration mode and frequency sweep vibration mode; the vibration frequency range is 10Hz to 200Hz, and the vibration amplitude is adjustable.

4. The rapid diagnostic device for ICT test cables according to claim 2, characterized in that, The micro vibration motor (8) is an eccentric rotor motor or a linear resonant motor. The installation position of the micro vibration motor (8) is parallel to the contact surface of the test cable (5), and the vibration transmission direction is perpendicular to the plane of the test cable (5).

5. The rapid diagnostic device for ICT test cables according to claim 1, characterized in that, The status indicator unit (6) is a dual-color LED light, installed next to the probe of each test channel and electrically connected to the on / off control module (3) to display the on / off status of the corresponding test channel: a solid green light indicates a circuit, a solid red light indicates an open circuit, and alternating red and green flashing indicates an abnormal resistance or a loose connection.

Images