Aviation cable detection device and detection method

Abstract

The invention discloses an aviation cable detection device and a detection method. The device comprises a box body; a man-machine interaction module, a power supply module and an aviation cable interface are arranged on a panel of the box body; a fault measurement and self-evaluation unit is arranged in the box body; the power supply module is electrically connected with the fault measurement and self-evaluation unit, the fault measurement and self-evaluation unit is in electric connection and communication connection with the man-machine interaction module, and the fault measurement and self-evaluation unit is electrically connected with the aviation cable interface; the fault measurement and self-evaluation unit is used for evaluating the connection quality of the to-be-detected aviation cable and the connector, and rapidly detecting whether the line sequence relation of the to-be-detected aviation cable is abnormal or not and whether the to-be-detected aviation cable is short-circuited or open-circuited or not. According to the invention, the quality of the welding spot of the aviation cable and the connector can be evaluated, whether the aviation cable has short circuit, open circuit, line sequence welding error and the like can be rapidly detected, and the aviation cable and the connector can be safely used on airplanes and missiles.

Description

Technical Field

[0001] The present invention belongs to the field of detection technology, and more specifically, relates to an aviation cable detection device and a detection method. Background Art

[0002] The quality of aviation cables and connectors plays a vital role in the actual flight of missiles and aircraft, and directly affects whether the missiles can hit the target and whether the aircraft can fly safely. Common aviation cable detection methods mainly use multimeters to measure each core, but there are deficiencies in the quality assessment of connector solder joints. If the connector solder joints have problems with unqualified quality or poor solder joints, when missiles and aircraft move at full scale, it is very easy for the cable connectors at the unqualified or poorly soldered points to fall off due to overheating, causing failures. In order to prevent such accidents, it is necessary to evaluate the quality of the solder joints of aviation cables and connectors in advance, which places higher requirements on the welding points.

[0003] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0004] The purpose of the present invention is to propose an aviation cable detection device and detection method, so as to evaluate the quality of the solder joints of aviation cables and connectors, and quickly detect whether the aviation cables have short circuits, open circuits, line sequence welding errors, etc., to ensure that the aviation cables and connectors can be safely used on aircraft and missiles.

[0005] To achieve the above object, the present invention provides an aviation cable detection device and a detection method.

[0006] According to a first aspect of the present invention, an aviation cable detection device is provided, comprising:

[0007] Box;

[0008] The box panel is provided with a human-computer interaction module, a power module and an aviation cable interface;

[0009] A fault measurement and self-assessment unit is provided inside the box;

[0010] The power supply module is electrically connected to the fault measurement and self-assessment unit, the fault measurement and self-assessment unit is electrically connected and communication-connected to the human-computer interaction module, and the fault measurement and self-assessment unit is electrically connected to the aviation cable interface;

[0011] The aviation cable interface is used to connect the aviation cable to be tested to the aviation cable detection device;

[0012] The fault measurement and self-assessment unit is used to evaluate the connection quality between the aviation cable to be tested and the connector, quickly detect whether the line sequence relationship of the aviation cable to be tested is abnormal, and whether the aviation cable to be tested is short-circuited or open-circuited;

[0013] The human-computer interaction module is used to receive and display user instructions and display detection and evaluation results.

[0014] Optionally, the aviation cable interface includes:

[0015] Aviation cable input interface and aviation cable output interface;

[0016] The first connector at one end of the aviation cable to be tested is connected through the aviation cable input interface, and the second connector at one end of the aviation cable to be tested is connected through the aviation cable output interface, so that the aviation cable to be tested is connected to the aviation cable detection device.

[0017] Optionally, the fault measurement and self-assessment unit includes:

[0018] A power conversion module, electrically connected to the power module and the human-computer interaction module respectively;

[0019] An analog quantity acquisition module, electrically connected to the power conversion module, and used to collect analog quantity signals at both ends of the aviation cable to be tested;

[0020] An adjustable constant current source module, electrically connected to the power supply conversion module, and used to provide a current signal to the aviation cable to be tested;

[0021] The fault detection and self-assessment module is electrically connected to the power conversion module, the analog quantity acquisition module, the adjustable constant current source module, the aviation cable input interface and the aviation cable output interface respectively. The fault measurement and self-assessment module is used to evaluate the connection quality between the aviation cable to be tested and the connector, quickly detect whether the line sequence relationship of the aviation cable to be tested is abnormal, and whether the aviation cable to be tested has a short circuit or a break.

[0022] Optionally, the evaluating the connection quality between the aviation cable to be tested and the connector includes:

[0023] The adjustable constant current source module is controlled by the fault detection and self-assessment module to input a set current to each pin of the aviation cable input interface in turn, and then input to each wire and connector interface of the aviation cable to be tested;

[0024] The current value of the set current is the rated current value of the corresponding interface;

[0025] The first voltage and the second voltage of the connectors at both ends of the aviation cable to be tested are collected by an analog quantity collection module, and the actual resistance value of each of the wires is obtained based on the difference between the first voltage and the second voltage and the first current signal;

[0026] Calculating the theoretical resistance of each of the wires based on the wire material and the wire diameter of the aviation cable;

[0027] The connection quality between the aviation cable to be tested and the connector is evaluated based on the actual resistance value, the theoretical resistance value and the set evaluation conditions.

[0028] Optionally, the method of quickly detecting whether the line sequence relationship of the aviation cable to be tested is abnormal includes:

[0029] The fault detection and self-assessment module sequentially inputs a third voltage to each pin of the aviation cable input interface in a time sequence, and then inputs the third voltage to each wire and connector interface of the aviation cable to be tested;

[0030] The fourth voltage of each pin of the aviation cable input interface is collected in sequence by the analog quantity collection module, so as to determine the line sequence correspondence between the interface of the first connector and the interface of the second connector;

[0031] It is determined whether the line sequence correspondence satisfies the set line table correspondence. If so, the line sequence relationship of the aviation cable is normal. If not, the line sequence relationship of the aviation cable is abnormal, and the corresponding pin mark "abnormal" is displayed on the human-computer interaction module.

[0032] Optionally, the method of quickly detecting whether the aviation cable to be tested has a short circuit or a break circuit includes:

[0033] The fault detection and self-assessment module sequentially inputs a fifth voltage to each pin of the aviation cable input interface in a time sequence, and then inputs the fifth voltage to each wire and connector interface of the aviation cable to be tested;

[0034] The sixth voltage of each pin of the aviation cable input interface is collected in sequence by the analog quantity collection module;

[0035] Based on the fifth voltage, the sixth voltage and the set judgment condition, it is judged whether the aviation cable to be tested has a short circuit or an open circuit. If so, the corresponding pin mark "short circuit" / "open circuit" is displayed on the human-computer interaction module.

[0036] Optionally, the box panel is also provided with:

[0037] A power-on switch is electrically connected to the power module and the power conversion module respectively; the power module is controlled by the power-on switch to supply / cut off power to the power conversion module.

[0038] Optionally, the setting of evaluation conditions includes:

[0039] If R0≤0Ω, it means that the connection quality between the wire and the connector of the corresponding aviation cable to be tested is excellent;

[0040] If 0Ω≤R0≤0.1Ω, it means that the connection quality between the wire and connector of the corresponding aviation cable to be tested is good;

[0041] If 0.1Ω≤R0, it means that the connection quality between the wire and connector of the corresponding aviation cable to be tested is poor and needs to be reconnected;

[0042] Wherein, R0 is the difference between the actual resistance value and the theoretical resistance value of the conductor of the aviation cable to be tested.

[0043] Optionally, the setting determination condition includes:

[0044] If the fifth voltage is equal to the sixth voltage, and one fifth voltage corresponds to multiple sixth voltages, or multiple fifth voltages correspond to multiple sixth voltages, or multiple fifth voltages correspond to one sixth voltage, it indicates that a short circuit exists in the conductor of the aviation cable to be tested;

[0045] If the fifth voltage is not equal to the sixth voltage, and the sixth voltage approaches 0V, it indicates that a wire of the corresponding aviation cable to be tested is broken.

[0046] Optionally, the aviation cable output interface includes:

[0047] Welding aviation cable output interface and crimping aviation cable output interface.

[0048] Optionally, a power-on indicator light is also provided on the box panel and is electrically connected to the fault detection and self-assessment module.

[0049] Optionally, the human-computer interaction module includes:

[0050] Touch the display.

[0051] According to a second aspect of the present invention, an aviation cable detection method is proposed, based on the aviation cable detection device according to any one of the first aspects, comprising:

[0052] The aviation cable detection device is powered on;

[0053] Connect the aviation cable to be tested to the aviation cable interface;

[0054] Issue instructions based on the human-computer interaction module and display the instructions;

[0055] Based on the instruction, the connection quality between the tested aviation cable and the connector is evaluated, and whether the line sequence relationship of the tested aviation cable is abnormal or whether the tested aviation cable has a short circuit or a break is quickly detected;

[0056] The detection or evaluation results are displayed through the human-computer interaction module.

[0057] The beneficial effects of the present invention are as follows: the aviation cable to be tested is connected to a fault measurement and self-assessment unit through an aviation cable interface, a user instruction is received through a human-computer interaction module, and the connection quality between the aviation cable to be tested and the connector is evaluated through the fault measurement and self-assessment unit according to the user instruction, whether the line sequence relationship of the aviation cable to be tested is abnormal and whether the aviation cable to be tested has a short circuit or a break, so as to evaluate the quality of the solder joints between the aviation cable and the connector, and at the same time, whether the aviation cable has a short circuit, a break, a line sequence welding error, etc. is quickly detected, so as to ensure that the aviation cable and the connector can be safely used on aircraft and missiles.

[0058] The system of the present invention has other characteristics and advantages, which will be apparent from the drawings incorporated herein and the following detailed description, or will be described in detail in the drawings incorporated herein and the following detailed description, which together serve to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, in which like reference numerals generally represent like components.

[0060] Figure 1 A schematic diagram of a panel of an aviation cable detection device according to Embodiment 1 of the present invention is shown.

[0061] Figure 2 A connection diagram of an aviation cable detection device according to Embodiment 1 of the present invention is shown.

[0062] Figure 3 A schematic diagram showing a touch display screen displaying test results according to the first embodiment of the present invention is shown. DETAILED DESCRIPTION

[0063] The present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0064] An aviation cable detection device according to the present invention comprises:

[0065] Box;

[0066] The box panel is equipped with a human-computer interaction module, a power module and an aviation cable interface;

[0067] A fault measurement and self-assessment unit is provided inside the box;

[0068] The power supply module is electrically connected to the fault measurement and self-assessment unit, the fault measurement and self-assessment unit is electrically connected and communication-connected to the human-machine interaction module, and the fault measurement and self-assessment unit is electrically connected to the aviation cable interface;

[0069] The aviation cable interface is used to connect the aviation cable to be tested to the aviation cable detection device;

[0070] The fault measurement and self-assessment unit is used to evaluate the connection quality between the tested aviation cable and the connector, quickly detect whether the line sequence relationship of the tested aviation cable is abnormal, and whether the tested aviation cable has a short circuit or a break circuit;

[0071] The human-computer interaction module is used to receive and display user instructions and display detection and evaluation results.

[0072] Specifically, the aviation cable detection device of the present invention is a box body, and a human-machine interaction module, a power supply module and an aviation cable interface are arranged on the box body panel, and a fault measurement and self-assessment unit is arranged inside the box body, the power supply module is electrically connected to the fault measurement and self-assessment unit, the fault measurement and self-assessment unit is electrically connected to the human-machine interaction module, and the fault measurement and self-assessment unit is electrically connected to the aviation cable interface. The power supply module supplies power to the fault measurement and self-assessment unit, and then the fault measurement and self-assessment unit supplies power to the human-machine interaction module. The aviation cable to be tested is connected to the fault measurement and self-assessment unit through the aviation cable interface for power supply, that is, the aviation cable detection device; the human-machine interaction module receives user instructions, and according to the user instructions, the fault measurement and self-assessment unit evaluates the connection quality of the aviation cable to be tested and the connector, quickly detects whether the line sequence relationship of the aviation cable to be tested is abnormal and whether the aviation cable to be tested has a short circuit or a break, so as to evaluate the quality of the solder joints of the aviation cable and the connector, and quickly detects whether the aviation cable has a short circuit, a break, a line sequence welding error, etc., to ensure that the aviation cable and the connector can be safely used on aircraft and missiles.

[0073] In one example, the aviation cable interface includes:

[0074] Aviation cable input interface and aviation cable output interface;

[0075] The first connector at one end of the aviation cable to be tested is connected through the aviation cable input interface, and the second connector at one end of the aviation cable to be tested is connected through the aviation cable output interface, so that the aviation cable to be tested is connected to the aviation cable detection device.

[0076] In one example, the fault measurement and self-assessment unit comprises:

[0077] A power conversion module is electrically connected to the power module and the human-machine interaction module respectively;

[0078] The analog quantity acquisition module is electrically connected to the power conversion module and is used to collect analog quantity signals at both ends of the aviation cable to be tested;

[0079] An adjustable constant current source module is electrically connected to the power supply conversion module and is used to provide a current signal to the aviation cable to be tested;

[0080] The fault detection and self-assessment module is electrically connected to the power conversion module, the analog acquisition module, the adjustable constant current source module, the aviation cable input interface and the aviation cable output interface respectively. The fault measurement and self-assessment module is used to evaluate the connection quality between the aviation cable to be tested and the connector, quickly detect whether the line sequence relationship of the aviation cable to be tested is abnormal, and whether the aviation cable to be tested has a short circuit or a break.

[0081] In one example, evaluating the connection quality between an aviation cable and a connector under test includes:

[0082] The adjustable constant current source module is controlled by the fault detection and self-assessment module to input the set current to each pin of the aviation cable input interface in turn, and then input to each wire and connector interface of the aviation cable to be tested;

[0083] The current value of the set current is the rated current value of the corresponding interface;

[0084] The first voltage and the second voltage of the connectors at both ends of the aviation cable to be tested are collected by the analog quantity collection module, and the actual resistance value of each conductor is obtained based on the difference between the first voltage and the second voltage and the first current signal;

[0085] Based on the conductor material of the aviation cable and the cable diameter of the conductor, the theoretical resistance of each conductor is calculated;

[0086] Evaluate the connection quality between the tested aviation cable and connector based on actual resistance value, theoretical resistance value and set evaluation conditions.

[0087] In one example, the process of quickly detecting whether the line sequence relationship of the aviation cable to be tested is abnormal includes:

[0088] The third voltage is input to each pin of the aviation cable input interface in sequence through the fault detection and self-assessment module, and then input to each wire and connector interface of the aviation cable to be tested;

[0089] The fourth voltage of each pin of the aviation cable input interface is collected in sequence by the analog quantity collection module, so as to determine the line sequence correspondence between the interface of the first connector and the interface of the second connector;

[0090] Determine whether the line sequence correspondence meets the set line table correspondence. If so, the aviation cable line sequence relationship is normal. If not, the aviation cable line sequence relationship is abnormal, and the corresponding pin mark "abnormal" is displayed on the human-computer interaction module.

[0091] In one example, quickly detecting whether the aviation cable under test has a short circuit or a break circuit includes:

[0092] The fifth voltage is input to each pin of the aviation cable input interface in sequence through the fault detection and self-assessment module, and then input to each wire and connector interface of the aviation cable to be tested;

[0093] The sixth voltage of each pin of the aviation cable input interface is collected in sequence by the analog quantity collection module;

[0094] Based on the fifth voltage, the sixth voltage and the set judgment condition, it is judged whether the aviation cable to be tested has a short circuit or an open circuit. If so, the corresponding pin mark "short circuit" / "open circuit" is displayed on the human-computer interaction module.

[0095] In one example, the cabinet panel also has:

[0096] The power-on switch is electrically connected to the power module and the power conversion module respectively; the power module is controlled by the power-on switch to supply / cut off power to the power conversion module.

[0097] In one example, setting the evaluation conditions includes:

[0098] If R0≤0Ω, it means that the connection quality between the wire and the connector of the corresponding aviation cable to be tested is excellent;

[0099] If 0Ω≤R0≤0.1Ω, it means that the connection quality between the wire and connector of the corresponding aviation cable to be tested is good;

[0100] If 0.1Ω≤R0, it means that the connection quality between the wire and connector of the corresponding aviation cable to be tested is poor and needs to be reconnected;

[0101] Wherein, R0 is the difference between the actual resistance value and the theoretical resistance value of the conductor of the aviation cable to be tested.

[0102] In one example, setting the determination condition includes:

[0103] If the fifth voltage is equal to the sixth voltage, and one fifth voltage corresponds to multiple sixth voltages or multiple fifth voltages correspond to multiple sixth voltages or multiple fifth voltages correspond to one sixth voltage, it indicates that a short circuit exists in the conductor of the corresponding aviation cable to be tested;

[0104] If the fifth voltage is not equal to the sixth voltage, and the sixth voltage approaches 0V, it indicates that a wire of the corresponding aviation cable to be tested is broken.

[0105] In one example, the aviation cable output interface includes:

[0106] Welding aviation cable output interface and crimping aviation cable output interface.

[0107] In one example, a power-on indicator light is also provided on the box panel and is electrically connected to the fault detection and self-assessment module.

[0108] In one example, the human-computer interaction module includes:

[0109] Touch the display.

[0110] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but is not intended to be limiting of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention may be combined with each other without conflict.

[0111] Embodiment 1

[0112] This embodiment provides an aviation cable detection device, including:

[0113] Portable roto-molded case; the case shell is made of plastic and has a carrying handle for easy carrying.

[0114] like Figure 1 As shown in the figure, the panel of the portable rotomolding case is a human-machine interaction interface, including: power-on switch, power-on indicator light, touch screen, external interface and test cable slot. The external interface includes signal output interface, signal input interface, AC220V power input interface. The signal input interface includes welding head cable input interface and pressure cable input interface.

[0115] The fault measurement and self-assessment module is installed in the chassis. Figure 2 As shown in the figure, the aviation cable and connector fault measurement and self-assessment module consists of a high-precision analog acquisition module, an adjustable constant current source module, and an MCU fault measurement and self-assessment module. The MCU fault measurement and self-assessment module has a built-in matrix relay module ( Figure 2 Not shown), voltage conversion module ( Figure 2 ) and a communication module (not shown) for communicating with the touch display screen Figure 2not shown);

[0116] Connect the connectors at both ends of the aviation cable to be measured and evaluated to the signal output interface and the welding head cable input interface respectively; control the matrix relay through the MCU fault measurement and self-evaluation module to output the current of the adjustable constant current source module to each pin of the connector of the tested aviation cable one by one, and the output current of the adjustable constant current source module is the maximum current that the single hole of the aviation connector can withstand (the current output value is set according to the specifications of different connectors). At the same time, measure the voltage of the connectors at both ends of the tested aviation cable. The resistance value R1 of the tested aviation cable can be calculated through the voltage difference between the connectors at both ends and the current output by the constant current source. Then, according to the wire material of the aviation cable and the known cable diameter, the theoretical line resistance R2 of the aviation cable can be calculated. According to R0=R1-R2, the value of the resistance R0 of the quality aviation cable is obtained. When R0≤0Ω, it means that the quality of the aviation cable and the connector is excellent; when 0Ω≤R0≤0.1Ω, it means that the quality of the aviation cable and the connector is good; when 0.1Ω≤R0, it means that the quality of the aviation cable and the connector is poor, which means that the core cable needs to be re-welded.

[0117] The MCU fault measurement and self-assessment module applies a +5V voltage value to one end of the tested aviation cable in sequence. At the same time, the MCU fault measurement and self-assessment module controls the analog quantity acquisition module to collect the voltage value of the other end of the tested aviation cable in sequence, so as to determine the corresponding relationship of the wire sequence of the pins at both ends, and finally display the corresponding table of the wire sequence relationship on the touch screen. Under normal circumstances, the wire sequence at both ends of the tested aviation cable meets the set corresponding relationship of the wire table, that is, the normal state; when the MCU fault measurement and self-assessment module determines that the output voltage of the tested aviation cable is equal to the input voltage, and the corresponding relationship does not meet the set corresponding situation of the wire table, the wire sequence relationship is determined to be abnormal. At this time, the touch screen displays the abnormal welding point, indicating which pin has a wire sequence error.

[0118] The MCU fault measurement and self-assessment module applies a +5V voltage value to one end of the tested aviation cable in sequence. At the same time, the MCU fault measurement and self-assessment module controls the analog quantity acquisition module to collect the voltage value of the other end of the tested aviation cable in sequence. When it is determined that the output voltage of the tested aviation cable is equal to the input voltage, and the voltages at both ends of the tested aviation cable are one-to-many / many-to-many / many-to-one, it indicates that the tested aviation cable has a short circuit, and the touch screen displays the corresponding pins of the short circuit. When it is determined that the output voltage of the tested aviation cable is not equal to the input voltage, and the output voltage approaches 0V, it indicates that the tested aviation cable has a circuit break. At this time, the touch screen displays the corresponding pins of the circuit break.

[0119] Figure 3 The test results displayed on the touch screen are shown.

[0120] Embodiment 2

[0121] This embodiment provides an aviation cable detection method, based on the aviation cable detection device described in Embodiment 1, including:

[0122] The aviation cable detection device is powered on;

[0123] Connect the connectors at both ends of the aviation cable to be measured and evaluated to the signal output interface and the welding head cable input interface respectively;

[0124] Issue and display commands based on the touch screen;

[0125] Evaluate the connection quality between the tested aviation cable and the connector based on the instructions, and quickly detect whether the line sequence of the tested aviation cable is abnormal or whether the tested aviation cable is short-circuited or open-circuited;

[0126] Display the test or evaluation results through the touch screen;

[0127] The MCU fault measurement and self-assessment module controls the matrix relay to output the current of the adjustable constant current source module to each pin of the connector of the tested aviation cable one by one, and the output current of the adjustable constant current source module is the maximum current that the single hole of the aviation connector can withstand (the current output value is set according to the specifications of different connectors). At the same time, the voltage of the connectors at both ends of the tested aviation cable is measured. The resistance value R1 of the tested aviation cable can be calculated through the voltage difference between the connectors at both ends and the current output by the constant current source. Then, according to the wire material of the aviation cable and the known cable diameter, the theoretical line resistance R2 of the aviation cable can be calculated. According to R0=R1-R2, the value of the resistance R0 of the quality aviation cable is obtained. When R0≤0Ω, it means that the quality of the aviation cable and the connector is excellent; when 0Ω≤R0≤0.1Ω, it means that the quality of the aviation cable and the connector is good; when 0.1Ω≤R0, it means that the quality of the aviation cable and the connector is poor, which means that the core cable needs to be re-welded.

[0128] The MCU fault measurement and self-assessment module applies a +5V voltage value to one end of the tested aviation cable in sequence. At the same time, the MCU fault measurement and self-assessment module controls the analog quantity acquisition module to collect the voltage value of the other end of the tested aviation cable in sequence, so as to determine the corresponding relationship of the wire sequence of the pins at both ends, and finally display the corresponding table of the wire sequence relationship on the touch screen. Under normal circumstances, the wire sequence at both ends of the tested aviation cable meets the set corresponding relationship of the wire table, that is, the normal state; when the MCU fault measurement and self-assessment module determines that the output voltage of the tested aviation cable is equal to the input voltage, and the corresponding relationship does not meet the set corresponding situation of the wire table, the wire sequence relationship is determined to be abnormal. At this time, the touch screen displays the abnormal welding point, indicating which pin has a wire sequence error.

[0129] The MCU fault measurement and self-assessment module applies a +5V voltage value to one end of the tested aviation cable in sequence. At the same time, the MCU fault measurement and self-assessment module controls the analog quantity acquisition module to collect the voltage value of the other end of the tested aviation cable in sequence. When it is determined that the output voltage of the tested aviation cable is equal to the input voltage, and the voltages at both ends of the tested aviation cable are one-to-many / many-to-many / many-to-one, it indicates that the tested aviation cable has a short circuit, and the touch screen displays the corresponding pins of the short circuit. When it is determined that the output voltage of the tested aviation cable is not equal to the input voltage, and the output voltage approaches 0V, it indicates that the tested aviation cable has a circuit break. At this time, the touch screen displays the corresponding pins of the circuit break.

[0130] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An aviation cable detection device, characterized in that: include: Box; The box panel is provided with a human-computer interaction module, a power module and an aviation cable interface; A fault measurement and self-assessment unit is provided inside the box; The power supply module is electrically connected to the fault measurement and self-assessment unit, the fault measurement and self-assessment unit is electrically connected and communication-connected to the human-computer interaction module, and the fault measurement and self-assessment unit is electrically connected to the aviation cable interface; The aviation cable interface is used to connect the aviation cable to be tested to the aviation cable detection device; The fault measurement and self-assessment unit is used to evaluate the connection quality between the aviation cable to be tested and the connector, quickly detect whether the line sequence relationship of the aviation cable to be tested is abnormal, and whether the aviation cable to be tested is short-circuited or open-circuited; The human-computer interaction module is used to receive and display user instructions and display detection and evaluation results.

2. The aviation cable detection device according to claim 1, characterized in that: The aviation cable interface comprises: Aviation cable input interface and aviation cable output interface; The first connector at one end of the aviation cable to be tested is connected through the aviation cable input interface, and the second connector at one end of the aviation cable to be tested is connected through the aviation cable output interface, so that the aviation cable to be tested is connected to the aviation cable detection device.

3. The aviation cable detection device according to claim 2, characterized in that: The fault measurement and self-assessment unit comprises: A power conversion module, electrically connected to the power module and the human-computer interaction module respectively; An analog quantity acquisition module, electrically connected to the power conversion module, and used to collect analog quantity signals at both ends of the aviation cable to be tested; An adjustable constant current source module, electrically connected to the power supply conversion module, and used to provide a current signal to the aviation cable to be tested; The fault detection and self-assessment module is electrically connected to the power conversion module, the analog quantity acquisition module, the adjustable constant current source module, the aviation cable input interface and the aviation cable output interface respectively. The fault measurement and self-assessment module is used to evaluate the connection quality between the aviation cable to be tested and the connector, quickly detect whether the line sequence relationship of the aviation cable to be tested is abnormal, and whether the aviation cable to be tested has a short circuit or a break.

4. The aviation cable detection device according to claim 3, characterized in that: The evaluating the connection quality between the tested aviation cable and the connector comprises: The adjustable constant current source module is controlled by the fault detection and self-assessment module to input a set current to each pin of the aviation cable input interface in turn, and then input to each wire and connector interface of the aviation cable to be tested; The current value of the set current is the rated current value of the corresponding interface; The first voltage and the second voltage of the connectors at both ends of the aviation cable to be tested are collected by an analog quantity collection module, and the actual resistance value of each of the wires is obtained based on the difference between the first voltage and the second voltage and the first current signal; Calculating the theoretical resistance of each of the wires based on the wire material and the wire diameter of the aviation cable; The connection quality between the aviation cable to be tested and the connector is evaluated based on the actual resistance value, the theoretical resistance value and the set evaluation conditions.

5. The aviation cable detection device according to claim 4, characterized in that: The method of quickly detecting whether the line sequence relationship of the aviation cable to be tested is abnormal includes: The fault detection and self-assessment module sequentially inputs a third voltage to each pin of the aviation cable input interface in a time sequence, and then inputs the third voltage to each wire and connector interface of the aviation cable to be tested; The fourth voltage of each pin of the aviation cable input interface is collected in sequence by the analog quantity collection module, so as to determine the line sequence correspondence between the interface of the first connector and the interface of the second connector; Determine whether the line sequence correspondence satisfies the set line table correspondence. If so, the aviation cable line sequence relationship is normal. If not, the aviation cable line sequence relationship is abnormal, and the corresponding pin mark "abnormal" is displayed on the human-computer interaction module.

6. The aviation cable detection device according to claim 3, characterized in that: The method of quickly detecting whether the aviation cable to be tested has a short circuit or a break circuit includes: The fault detection and self-assessment module sequentially inputs a fifth voltage to each pin of the aviation cable input interface in a time sequence, and then inputs the fifth voltage to each wire and connector interface of the aviation cable to be tested; The sixth voltage of each pin of the aviation cable input interface is collected in sequence by the analog quantity collection module; Based on the fifth voltage, the sixth voltage and the set judgment condition, it is judged whether the aviation cable to be tested has a short circuit or an open circuit. If so, the corresponding pin mark "short circuit" / "open circuit" is displayed on the human-computer interaction module.

7. The aviation cable detection device according to claim 1, characterized in that: The box panel is also provided with: A power-on switch is electrically connected to the power module and the power conversion module respectively; the power module is controlled by the power-on switch to supply / cut off power to the power conversion module.

8. The aviation cable detection device according to claim 4, characterized in that: The setting of evaluation conditions includes: If R0≤0Ω, it means that the connection quality between the wire and the connector of the corresponding aviation cable to be tested is excellent; If 0Ω≤R0≤0.1Ω, it means that the connection quality between the wire and connector of the corresponding aviation cable to be tested is good; If 0.1Ω≤R0, it means that the connection quality between the wire and connector of the corresponding aviation cable to be tested is poor and needs to be reconnected; Wherein, R0 is the difference between the actual resistance value and the theoretical resistance value of the conductor of the aviation cable to be tested.

9. The aviation cable detection device according to claim 5, characterized in that: The setting determination conditions include: If the fifth voltage is equal to the sixth voltage, and one fifth voltage corresponds to multiple sixth voltages, or multiple fifth voltages correspond to multiple sixth voltages, or multiple fifth voltages correspond to one sixth voltage, it indicates that a short circuit exists in the conductor of the aviation cable to be tested; If the fifth voltage is not equal to the sixth voltage, and the sixth voltage approaches 0V, it indicates that a wire of the corresponding aviation cable to be tested is broken.

10. An aviation cable detection method, based on the aviation cable detection device according to any one of claims 1 to 9, characterized in that: include: The aviation cable detection device is powered on; Connect the aviation cable to be tested to the aviation cable interface; Issue instructions based on the human-computer interaction module and display the instructions; Based on the instruction, the connection quality between the tested aviation cable and the connector is evaluated, and whether the line sequence relationship of the tested aviation cable is abnormal or whether the tested aviation cable has a short circuit or a break is quickly detected; The detection or evaluation results are displayed through the human-computer interaction module.

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