Multi-channel harness fault detection circuit and apparatus

Abstract

This utility model discloses a multi-channel wire harness fault detection circuit and device, relating to the field of electronic testing technology. The multi-channel wire harness fault detection circuit includes a first alarm module, a first interface, and multiple branch detection modules. Each branch detection module includes a second interface, a diode, and a second alarm module. The second alarm module has unidirectional conductivity, conducting from its anode to its cathode. The anode of the second alarm module is connected to the anode of the second interface, and the cathode of the second alarm module is connected to both the cathode of the diode and the cathode of the second interface. The first alarm module is connected to both the anode of the diode and the first interface. This achieves the effect of improving the detection efficiency of wire harness open circuits and contact defects.

Description

Technical Field

[0001] This utility model relates to the field of electronic testing technology, and in particular to a multi-channel wire harness fault detection circuit and device. Background Technology

[0002] In industrial equipment maintenance, this method is particularly suitable for detecting sensor harness open circuits and poor contacts in the automotive and aerospace industries. Open circuits and poor contacts in sensor harnesses are common faults. Traditional testing methods rely on multimeters to measure point by point, which is inefficient and cannot provide real-time monitoring. Utility Model Content

[0003] The technical problem to be solved by this utility model embodiment is that the traditional sensor harness open circuit and poor contact fault detection method is inefficient.

[0004] To address the aforementioned problems, this utility model discloses a multi-channel wire harness fault detection circuit and device. This achieves the effect of improving the detection efficiency of wire harness open circuits and contact defects.

[0005] This invention provides a multi-channel wire harness fault detection circuit, which includes a first alarm module, a first interface, and multiple branch detection modules. Each branch detection module includes a second interface, a diode, and a second alarm module. The second alarm module has unidirectional conductivity, conducting from the anode to the cathode. The anode of the second alarm module is connected to the anode of the second interface, and the cathode of the second alarm module is connected to the cathode of the diode and the cathode of the second interface, respectively. The first alarm module is connected to the anode of the diode and the first interface, respectively.

[0006] A further technical solution is that the first alarm module is a buzzer.

[0007] A further technical solution is that the second alarm module is an LED light.

[0008] A further technical solution includes a current limiting module, which is connected to the anode of the first interface and the first alarm module respectively.

[0009] A further technical solution includes an energy storage module, which is connected to both the first interface and the first alarm module.

[0010] A further technical solution is that the second interface is a BNC connector.

[0011] The further technical solution is that the first interface is a 1 / 4-28UNF connector.

[0012] This invention also provides a detection device, including a multi-channel wire harness fault detection circuit as described in any of the above embodiments.

[0013] Compared with the prior art, the technical effects achieved by the embodiments of this utility model include:

[0014] Circuit break detection: When an LED in a certain branch circuit goes out, the buzzer sounds continuously (achieved through the drive control node and the alarm trigger node).

[0015] Poor contact: The buzzer sounds momentarily (achieved by triggering the alarm trigger node via a voltage comparator pulse).

[0016] Reverse connection protection: Diode common anode topology (common power supply node). Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A block diagram of a multi-channel wire harness fault detection circuit provided for an embodiment of this utility model;

[0019] Figure 2 A schematic diagram of a multi-channel wire harness fault detection circuit provided for an embodiment of this utility model.

[0020] Figure Labels

[0021] 1. First alarm module; 2. First interface; 3. Branch detection module;

[0022] 31. Second interface; 32. Diode; 33. Second alarm module. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Similar component reference numerals in the drawings represent similar components. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0025] It should also be understood that the terminology used in this specification of embodiments of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of the present invention. As used in this specification of embodiments of the present invention and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0026] See Figures 1-2 This utility model provides a multi-channel wire harness fault detection circuit. The multi-channel wire harness fault detection circuit includes a first alarm module 1, a first interface 2, and multiple branch detection modules 3. Each branch detection module 3 includes a second interface 31, a diode 32, and a second alarm module 33. The second alarm module 33 has unidirectional conductivity, conducting from the anode to the cathode. The anode of the second alarm module 33 is connected to the anode of the second interface 31, and the cathode of the second alarm module 33 is connected to the cathode of the diode 32 and the cathode of the second interface 31, respectively. The first alarm module 1 is connected to the anode of the diode 32 and the first interface 2, respectively. Specific descriptions of each component are as follows:

[0027] In this embodiment, the first alarm module 1 includes a buzzer and an indicator light; the first interface 2 refers to a standardized connector on the device used for centralized access to power and system-level signals, including power supply pins and ground pins; the three branch detection modules 3 respectively detect the X, Y, and Z wire harnesses through three second interfaces 31 of BNC X, BNC Y, and BNC Z. The first interface 2 is provided with three power supply pins of miniX, miniY, and miniZ that are electrically connected in a one-to-one correspondence. When any branch detection module 3 fails, the first alarm module 1 will work, and the second alarm module 33 of the branch detection module 3 that has failed will work.

[0028] The following is an example of the detection process using this multi-channel wiring harness fault detection circuit:

[0029] The X, Y, and Z sensor harnesses are in normal condition:

[0030] BNC X, LED X, BNC-connected;

[0031] BNC Y, LED Y, BNC-connected;

[0032] BNC Z, LED Z, BNC-connected;

[0033] LED X is emitting light, LED Y is emitting light, LED Z is emitting light, and the first alarm module 1 is not working.

[0034] The X sensor wiring harness has a loose connection:

[0035] Mini X, First Alarm Module, Diode Dx, BNC-Connect;

[0036] BNC Y, LED Y, BNC-connected;

[0037] BNC Z, LED Z, BNC-connected;

[0038] LED X is off (or flashing), LED Y is on, LED Z is on, and the first alarm module is activated (or emits a brief "beep" sound at the moment of switching on and off).

[0039] The x, y, and z sensor wiring harnesses are in an open circuit (loose connection) state:

[0040] Mini X, Buzzer, Diode X, Dx, BNC-connected;

[0041] Mini Y, buzzer, diode Y, Dy, BNC-connected;

[0042] Mini Z, buzzer, diode Z, Dz, BNC-connected;

[0043] LED X is not lit (or flashes), LED Y is not lit (or flashes), LED Z is not lit (or flashes), and the first alarm module is activated (or emits a brief "beep" sound at the moment of switching on and off).

[0044] The technical effects that can be achieved by the embodiments of this utility model include:

[0045] Circuit break detection: When an LED in a certain branch circuit goes out, the buzzer sounds continuously (achieved through the drive control node and the alarm trigger node).

[0046] Poor contact: The buzzer sounds momentarily (achieved by triggering the alarm trigger node via a voltage comparator pulse).

[0047] Reverse connection protection: Diode common anode topology (common power supply node).

[0048] See also Figures 1-2 In this embodiment, the first alarm module 1 is a buzzer.

[0049] Ideally, the first alarm module 1 is a buzzer ( Figure 2The device (labeled BUZZER) emits a "beep" sound at the moment of connection failure to warn on-site testers of the risk of a loose connection in the wiring harness.

[0050] Furthermore, the second alarm module 33 is an LED light.

[0051] Specifically, the LED light is a light-emitting diode 32, which has unidirectional conductivity and emits light when it is on. In this embodiment, the second alarm module 33 is used to warn whether there is a fault in the wiring harness detected by the branch. If there is an open circuit in the wiring harness, the LED light of the branch will turn off. If there is no open circuit in the wiring harness, the LED light of the branch will remain on.

[0052] Furthermore, it also includes a current limiting module, which is connected to the anode of the first interface 2 and the first alarm module 1 respectively.

[0053] Specifically, the current limiting module is a resistor. In this embodiment, the current limiting module is connected in series between the energy storage module and the first interface 2 to limit the current and prevent excessive current from damaging the sensor.

[0054] Furthermore, it also includes an energy storage module, which is connected to the first interface 2 and the first alarm module 1 respectively.

[0055] Specifically, the energy storage module includes a lithium battery (labeled BATTERY in the figure). The energy storage module provides the DC power required by the entire circuit system, supplies power to the circuit, and provides portability.

[0056] Furthermore, the second interface 31 is a BNC connector.

[0057] Furthermore, the first interface 2 is a 1 / 4-28UNF connector.

[0058] Specifically, the second interface 31 is used to connect to the sensor wiring harness, and the first interface 2 is used to connect to the charging port and the power switch. In this embodiment, the 1 / 4-28UNF connector includes X, Y, and Z pins, and its X / Y / Z pins are electrically directly connected to the corresponding BNC connectors.

[0059] This utility model embodiment also provides a detection device, including a multi-channel wire harness fault detection circuit as described in any of the above embodiments.

[0060] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0064] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0065] The above description describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A multi-channel harness fault detection circuit, characterized by, It includes a first alarm module, a first interface, and multiple branch detection modules; Each branch detection module includes a second interface, a diode, and a second alarm module; the second alarm module has unidirectional conductivity, and is conductive from the anode of the second alarm module to the cathode of the second alarm module; The anode of the second alarm module is connected to the anode of the second interface, and the cathode of the second alarm module is connected to the cathode of the diode and the cathode of the second interface, respectively. The first alarm module is connected to the anode of the diode and the first interface, respectively.

2. The multi-channel harness fault detection circuit of claim 1, wherein, The first alarm module is a buzzer.

3. The multi-channel harness fault detection circuit of claim 1, wherein, The second alarm module is an LED light.

4. The multi-channel harness fault detection circuit of claim 1, wherein, It also includes a current limiting module, which is connected to the anode of the first interface and the first alarm module respectively.

5. The multi-channel harness fault detection circuit of claim 1, wherein, It also includes an energy storage module, which is connected to the first interface and the first alarm module respectively.

6. The multi-channel harness fault detection circuit of claim 1, wherein, The second interface is a BNC connector.

7. The multi-channel harness fault detection circuit of claim 1, wherein, The first interface is a 1 / 4-28UNF connector.

8. A detection device, characterized in that Includes the multi-channel wire harness fault detection circuit as described in any one of claims 1-7.

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