CN114779003A - Automobile wire harness fault detection device and method - Google Patents
Automobile wire harness fault detection device and method Download PDFInfo
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- CN114779003A CN114779003A CN202210320788.9A CN202210320788A CN114779003A CN 114779003 A CN114779003 A CN 114779003A CN 202210320788 A CN202210320788 A CN 202210320788A CN 114779003 A CN114779003 A CN 114779003A
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- 238000001514 detection method Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000523 sample Substances 0.000 claims abstract description 80
- 238000000429 assembly Methods 0.000 claims abstract description 20
- 230000000712 assembly Effects 0.000 claims abstract description 20
- 230000002159 abnormal effect Effects 0.000 claims description 13
- 230000005856 abnormality Effects 0.000 claims description 5
- 239000003086 colorant Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/06711—Probe needles; Cantilever beams; "Bump" contacts; Replaceable probe pins
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/073—Multiple probes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/073—Multiple probes
- G01R1/07307—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a device and a method for detecting faults of an automobile wire harness, wherein the device comprises a control module, two connecting wires, a double-hole connector and a plurality of probe assemblies, wherein the control module is used for detecting different signal faults of the automobile wire harness; one end of each connecting line is connected with the control module, the other end of each connecting line is connected with the double-hole connector, the probe assembly is connected with the double-hole connector directly or through an extension line, and the control module is provided with a selection unit and a prompt unit. The automobile wire harness fault detection device and method provided by the invention have the advantages of high measurement precision, simple fault judgment, small error, wide applicability and convenience in carrying.
Description
Technical Field
The invention relates to the technical field of detection, in particular to a device and a method for detecting a fault of an automobile wire harness.
Background
With the rapid advance of automobile electrical and intelligent technologies, the whole automobile configuration is higher and higher, the number of electrical components is more and more, the frequency of faults is higher and higher corresponding to the rapid increase of automobile wiring harness loops, and the detection and maintenance of the automobile wiring harness faults are particularly important.
The existing automobile wire harness fault detection mainly reads an automobile fault code through an automobile diagnostic instrument, and after a maintenance worker judges that a wire harness fault occurs, a wire harness loop is measured again by using a universal meter which is a common tool. When the universal meter detects the automobile wire harness, the first meter pen and the second meter pen can only contact with the terminal surfaces of the front door connector and the switch connector, the numerical value displayed by the universal meter can only be obtained at the moment, the meter pen and the terminal surface are unstable in contact, the final test result has large fluctuation, the mistaken insertion of the meter pen into the terminal can cause secondary damage of the wire harness, and the measurement result of an accurate point cannot be guaranteed due to unreliability of manual contact and operation.
Disclosure of Invention
The invention aims to provide a device and a method for detecting faults of an automobile wire harness, which have the advantages of high measurement precision, simple fault judgment, small error, wide applicability and portability.
In order to achieve the purpose, the invention provides an automobile wire harness fault detection device which comprises a control module, two connecting lines, a double-hole connector and a plurality of probe assemblies, wherein the control module is used for detecting different signal faults of an automobile wire harness;
one end of each connecting line is connected with the control module, the other end of each connecting line is connected with the double-hole connector, and the probe assembly is connected with the double-hole connector directly or through an extension line; the control module is provided with a selection unit for selecting the type of the detected signal and a prompt unit for feeding back the detection result of the automobile wire harness.
Furthermore, the extension line is adjustable in length, and the extension line is composed of one extension line assembly or a plurality of extension line assemblies connected in sequence.
Further, the extension line assembly comprises an extension sub-line and a single-hole connector, wherein the two ends of the extension sub-line are provided with second plug-in units, and the first end of the extension sub-line is connected with the single-hole connector; the two extension line assemblies are connected with the second end of the extension sub-line in the other extension line assembly through a single-hole connector in one extension line assembly;
the single-hole connector is used for plugging the probe assembly and positioned at one end of the extension line, and the other end of the extension line is used for plugging the double-hole connector.
Further, the prompting unit comprises a plurality of indicating lamps used for distinguishing and feeding back automobile wiring harness results, and the colors of the indicating lamps are different when the indicating lamps are lightened.
Further, the prompting unit also comprises a display screen for displaying the automobile wiring harness result.
Furthermore, the prompting unit also comprises a loudspeaker for broadcasting the automobile wire harness result.
Further, the selection unit is a control knob.
The embodiment also provides an automobile wire harness fault detection method, which is used for the automobile wire harness fault detection device, and the detection method comprises the following steps:
determining the type of a tested signal of a tested wire harness loop, and selecting the type of the tested signal through a selection unit;
selecting two probe assemblies matched with a connector on a measured wire harness, respectively setting the extended lengths of the two probe assemblies according to the length of a loop of the measured wire harness, and assembling;
the probes of the probe assemblies are respectively inserted into the two corresponding connectors on the tested wire harness, signals of the tested wire harness are collected and input into the control module, and the control module judges signal values and feeds back detection results through the prompting unit.
Further, the control module judges the signal value and specifically executes the following steps:
when the voltage signal fault of the automobile wire harness is detected, if the voltage of the detected wire harness is detected to be smaller than a first voltage threshold value, the control module judges that the voltage is too low; if the voltage of the wiring harness to be tested is detected to be greater than or equal to the first voltage threshold and smaller than the second voltage threshold, the control module judges that the voltage is abnormal; if the voltage of the wiring harness to be tested is detected to be greater than or equal to the second voltage threshold and less than or equal to the third voltage threshold, the control module judges that the voltage is normal; if the voltage of the detected wire harness is detected to be larger than the third voltage threshold, the control module judges that the voltage is too high;
when the automobile wire harness resistance value signal fault is detected, if the resistance value of the detected wire harness is detected to be smaller than a first resistance value threshold value, the control module judges that the resistance value is normal; if the resistance value of the wiring harness to be tested is detected to be larger than or equal to the first resistance value threshold value and smaller than or equal to the second resistance value threshold value, the control module judges that the wiring harness to be tested is abnormal; and if the resistance value of the detected wire harness is detected to be larger than the second resistance value threshold value, the control module judges that the wire harness is in fault.
Further, the detection result is fed back through a prompt unit, and the following steps are specifically executed:
when the voltage signal fault of the automobile wire harness is detected, if the voltage is detected to be too low or too high, the display screen displays the detected value, the loudspeaker plays that the voltage is too low, and the red indicator lamp is lightened; if the voltage abnormality is detected, the display screen displays the measured value, the loudspeaker plays the voltage abnormality, and a yellow indicator lamp is lightened; if the voltage is detected to be normal, the display screen displays the measured value, the loudspeaker plays the voltage to be normal, and a green indicator lamp is lightened;
when the fault of the automobile wire harness resistance value signal is detected, if the resistance value is detected to be normal, the display screen displays the detected value, the loudspeaker plays that the resistance value is normal, and the green indicator light is lightened; if the resistance value is detected to be abnormal, the display screen displays the measured value, the loudspeaker plays that the resistance value is abnormal, and a yellow indicator lamp is lightened; if the wire harness fault is detected, the display screen displays the measured value, the loudspeaker plays the over-high resistance value, and the red indicator lamp is lightened.
Compared with the prior art, the invention has the following advantages:
the automobile wire harness fault detection device and the method have the advantages of high measurement precision, small error, wide applicability, simple fault judgment and portability. Various probes capable of being inserted into the terminal of the measured wire harness are designed from the special angle of the wire harness, the probe wires of different types can be adapted to most of the special terminals of the wire harness, the inserted probes cannot cause secondary damage to the terminal of the wire harness, the contact performance of the electric appliance is stable, and the measurement precision and the accuracy of fault judgment are improved; the layout of electric devices of the whole automobile is fully considered, the complexity of the length of the wire harness loop is considered, the extension lines with different lengths are replaced, the adaptability is strong, and detection personnel can conveniently detect the wire harness loops within different distance ranges. This application can be when detecting the automatic judgment fault type, reminds through sound, and vision is reminded, and light is reminded multiple mode and is fed back to maintenance personal, small in size, portable.
Drawings
FIG. 1 is a schematic structural diagram of an automotive wiring harness fault detection device according to the present invention;
FIG. 2 is a schematic view of the extension line of FIG. 1;
FIG. 3 is an operational diagram of the automotive wiring harness fault detection device of the present invention;
fig. 4 is a flowchart of the method for detecting the fault of the automotive wiring harness according to the present invention.
In the figure:
1-a control module; 2-connecting wires; 3-a two-hole connector; 4-probe assembly, 5-extension wire, 51-extension sub-wire, 52-single-hole connector; 6-measured wiring harness, 61-motor controller, 62-switch connector, 63-front door connector and 64-door lock connector; 7-a prompting unit, 71-an indicator light, 72-a display screen, 73-a loudspeaker; 8-selection unit.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.
Referring to fig. 1 to 4, the embodiment discloses an automobile harness fault detection device, which includes a control module 1 for detecting different signal faults of an automobile harness, two connection lines 2, a two-hole connector 3 and a plurality of probe assemblies 4, where each probe assembly 4 includes a probe line, a probe and a first plug-in unit, the probe and the first plug-in unit are respectively disposed at two ends of the probe line, and the probe on each probe assembly 4 has different types and can be adapted to different automobile harness connector terminals;
one end of each connecting line 2 is respectively connected with the control module 1, the other end of each connecting line 2 is respectively connected with the double-hole connector 3, and the probe assembly 4 is directly connected with the double-hole connector 3 or is connected with the double-hole connector 3 through an extension line 5; the control module 1 is provided with a selection unit 8 for selecting the type of the detected signal and a prompt unit 7 for feeding back the detection result of the automobile wire harness. During detection, the probe assembly 4 matched with the connector on the detected wire harness 6 is replaced, so that the detection of automobile wire harness loops with different lengths can be adapted, the adaptability is strong, and the universality is high. The first plug-in is used for being plugged with the corresponding connector.
The plurality of probe assemblies 4 include a probe assembly with type a probes, a probe assembly with type B probes, a probe assembly with type C probes, and a probe assembly with type D probes. Taking a probe assembly with an a-type probe and a probe assembly with a B-type probe as examples, the connection mode of the automobile fault detection device includes the following modes:
mode 1: a probe assembly with an A-type probe and a probe assembly with a B-type probe are directly adopted to be connected with the double-hole connector 3; this case is for a short measured loop distance.
Mode 2: the probe assembly with the A-type probe is connected with the double-hole connector 3 through an extension line 5, and the probe assembly with the B-type probe is connected with the double-hole connector 3 through the extension line 5; this case is longer for the measured loop distance, and the length of the extension 5 is adjusted according to the actual situation.
Mode 3: the probe assembly with the A-type probe is connected with the double-hole connector 3, and the probe assembly with the B-type probe is connected with the double-hole connector 3 through an extension line 5; alternatively, the first and second electrodes may be,
the probe assembly with the type B probe is connected to the duplex connector 3, and the probe assembly with the type a probe is connected to the duplex connector 3 through the extension line 5. This case is longer for the measured loop distance, and the length of the extension 5 is adjusted according to the actual situation.
In the present embodiment, the length of the extension line 5 is adjustable, and the extension line 5 is composed of one extension line component or a plurality of extension line components connected in sequence. In practical application, the extension lines 5 with different lengths can be selected according to a test scenario.
In the embodiment, the extension line assembly comprises an extension sub-line 51 with a second plug-in unit at two ends and a single-hole connector 52, wherein the first end of the extension sub-line 51 is connected with the single-hole connector 52; the two extension wire assemblies are connected with the second end of the extension sub-wire 51 in the other extension wire assembly through the single-hole connector 52 in one extension wire assembly;
the single-hole connector 52 at one end of the extension 5 is used for plugging the probe assembly 4, and the other end of the extension 5 is used for plugging in the dual-hole connector 3. The second plug-in is used for being plugged with the corresponding connector.
In the present embodiment, the prompting unit 7 includes a plurality of indicator lamps 71 for distinguishing and feeding back the result of the automobile wiring harness, and the color of each indicator lamp 71 when being turned on is different.
In this embodiment, the prompting unit 7 further includes a display screen 72 for displaying the result of the automobile wiring harness.
In this embodiment, the prompting unit 7 further includes a speaker 73 for broadcasting the result of the automobile wiring harness.
In the present embodiment, the selection unit 8 is a control knob.
As shown in fig. 3, one of the automotive harnesses on the whole vehicle is taken as an example to explain: when the measured wire harness 6 is measured, the measured wire harness 6 belongs to a longer wire harness section, and the mode 4 is adopted for device connection: for the door lock connector 64 progress determination, an a-type probe may be used to make the insertion into the connector terminal holding measurements; connecting a probe assembly with an A-type probe with an extension line 5, and connecting the extension line 5 with a connecting line 2; judging the front door connector 63, inserting a D-shaped probe into a connector terminal to keep measurement, and connecting a probe assembly with the D-shaped probe with the connecting line 2; the connecting wire 2 is connected with the control module 1, and the device is connected completely at the moment. After judgment, the section of the measured wire harness 6 belongs to the resistance class, the control knob is rotated to the corresponding position, the control module 1 can display the measurement result through the indicator lamp 71, the loudspeaker 73 and the display screen 72 after judgment, and at the moment, the fault type of the measured wire harness 6 can be obtained.
Referring to fig. 4, the embodiment discloses an automobile harness fault detection method, which utilizes the above automobile harness fault detection device, and the detection method includes the following steps:
determining the type of a signal to be tested of a loop of a wire harness 6 to be tested, and selecting the type of the signal to be tested through a selection unit 8;
selecting two probe assemblies 4 matched with a connector on a measured wire harness 6, and respectively setting the extended lengths of the two probe assemblies 4 according to the length of a loop of the measured wire harness 6 and assembling;
the probes of the probe assemblies 4 are respectively inserted into the two corresponding connectors on the measured wire harness 6, the signals of the measured wire harness 6 are collected and input into the control module 1, and the control module 1 judges the signal values and feeds back the detection results through the prompting unit 7.
In this embodiment, the control module 1 determines the signal value, and specifically executes the following steps:
when the voltage signal fault of the automobile wire harness is detected, if the voltage of the detected wire harness 6 is detected to be smaller than a first voltage threshold value, the control module 1 judges that the voltage is too low; if the voltage of the detected wire harness 6 is detected to be greater than or equal to the first voltage threshold and smaller than the second voltage threshold, the control module 1 judges that the voltage is abnormal; if the voltage of the detected wire harness 6 is detected to be greater than or equal to the second voltage threshold and less than or equal to the third voltage threshold, the control module 1 determines that the voltage is normal; if the voltage of the measured wire harness 6 is detected to be larger than the third voltage threshold, the control module 1 determines that the voltage is too high. According to the requirements of the minimum voltage, the normal working voltage and the maximum voltage of most of automobile electrical components, the parameters are set as follows: the first voltage threshold is 3V, the second voltage threshold is 11V, and the third voltage threshold is 14V; in some embodiments, the first voltage threshold, the second voltage threshold, and the third voltage threshold may also be other values, which are not limited herein.
When the automobile wire harness resistance value signal fault is detected, if the resistance value of the detected wire harness 6 is smaller than a first resistance value threshold value, the control module 1 judges that the resistance value is normal; if the resistance value of the detected wire harness 6 is detected to be greater than or equal to the first resistance value threshold value and less than or equal to the second resistance value threshold value, the control module 1 judges that the wire harness is abnormal; if the resistance value of the detected wire harness 6 is larger than the second resistance value threshold value, the control module 1 judges that the wire harness is in fault. After the resistance of most automobile wires is calculated, the parameters are set as follows: the first resistance threshold is 100m Ω; the second resistance threshold is 5 Ω; in some embodiments, the first resistance threshold and the second resistance threshold may also be other values, which are not limited herein.
The resistance value of the measured wire harness 6 is in a direct proportion relation with the length of the wire under normal conditions, the length of a single wire is generally not more than 6m, and the wire resistances with different sectional areas are different according to a formula (resistance = length multiplied by resistivity divided by sectional area).
In this embodiment, the feedback of the detection result through the prompt unit 7 specifically includes the following steps:
when the voltage signal fault of the automobile wire harness is detected, if the voltage is detected to be too low or too high, the display screen 72 displays the measured value, the loudspeaker 73 plays that the voltage is too low, and the red indicator lamp 71 is lightened;
if the voltage is detected to be abnormal, the display screen 72 displays the measured value, the loudspeaker 73 plays the voltage abnormality, and the yellow indicator lamp 71 is lightened;
if the voltage is detected to be normal, the display screen 72 displays the measured value, the loudspeaker 73 plays that the voltage is normal, and the green indicator lamp 71 is lightened;
when the automobile wire harness resistance value signal fault is detected, if the resistance value is detected to be normal, the display screen 72 displays the measured value, the loudspeaker 73 plays that the resistance value is normal, and the green indicator lamp 71 is lightened;
if the resistance value is detected to be abnormal, the display screen 72 displays the measured value, the loudspeaker 73 plays that the resistance value is abnormal, and the yellow indicator lamp 71 is lightened;
if the wire harness fault is detected, the display screen 72 displays the measured value, the loudspeaker 73 plays the over-high resistance value, and the red indicator lamp 71 is lightened.
The automobile wire harness fault detection device and the method have the advantages of high measurement precision, small error, wide applicability, simple fault judgment and portability. Various probes capable of being inserted into the terminal of the measured wire harness are designed from the special angle of the wire harness, the probe wires of different types can be adapted to most of the special terminals of the wire harness, the inserted probes cannot cause secondary damage to the terminal of the wire harness, the contact performance of the electric appliance is stable, and the measurement precision and the accuracy of fault judgment are improved; the layout of electric devices of the whole automobile is fully considered, the complexity of the length of the wire harness loop is considered, the extension lines with different lengths are replaced, the adaptability is strong, and detection personnel can conveniently detect the wire harness loops within different distance ranges. This application can be when detecting the automatic judgement fault type, reminds through sound, and the vision is reminded, and maintenance personal is given back to in multiple mode is reminded to light, small in size, portable.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The automobile wire harness fault detection device is characterized by comprising a control module (1) for detecting different signal faults of an automobile wire harness, two connecting wires (2), a double-hole connector (3) and a plurality of probe assemblies (4), wherein each probe assembly (4) comprises a probe wire, a probe and a first plug-in unit, the probe and the first plug-in unit are respectively arranged at two ends of the probe wire, and the types of the probes on the probe assemblies (4) are different and can be adapted to different automobile wire harness connector terminals;
one end of each connecting line (2) is respectively connected with the control module (1), the other end of each connecting line (2) is respectively connected with the double-hole connector (3), and the probe assembly (4) is directly connected with the double-hole connector (3) or is connected with the double-hole connector (3) through an extension line (5); the control module (1) is provided with a selection unit (8) for selecting the type of a detected signal and a prompt unit (7) for feeding back the detection result of the automobile wire harness.
2. The automotive wire harness fault detection device according to claim 1, characterized in that the extension line (5) is adjustable in length, and the extension line (5) is composed of one extension line assembly or a plurality of extension line assemblies connected in sequence.
3. The automotive harness fault detection device according to claim 2, wherein the extension wire assembly includes an extension sub wire (51) with a second plug-in at both ends and a single-hole connector (52), and a first end of the extension sub wire (51) is connected with the single-hole connector (52); the two extension line assemblies are connected with the second end of the extension sub-line (51) in the other extension line assembly through a single-hole connector (52) in one extension line assembly;
a single-hole connector (52) is arranged at one end of the extension line (5) and is used for being connected with the probe assembly (4), and the other end of the extension line (5) is used for being connected with the double-hole connector (3).
4. The automotive harness fault detection device according to claim 1, 2 or 3, wherein the prompting unit (7) comprises a plurality of indicator lights (71) for distinguishing feedback automotive harness results, and the colors of the respective indicator lights (71) when being lighted are different.
5. The automotive harness fault detection device according to claim 4, characterized in that the prompting unit (7) further comprises a display screen (72) for displaying automotive harness results.
6. The automotive harness fault detection device according to claim 5, wherein the prompting unit (7) further comprises a speaker (73) for broadcasting automotive harness results.
7. The automotive harness fault detection device of claim 1, 2, 3, 5 or 6, characterized in that the selection unit (8) is a control knob.
8. A method for detecting a failure of an automotive wire harness, using the automotive wire harness failure detection device according to any one of claims 1 to 7, the detection method comprising the steps of:
determining the type of a signal to be tested of a loop of a wire harness (6) to be tested, and selecting the type of the signal to be tested through a selection unit (8);
selecting two probe assemblies (4) matched with a connector on a measured wire harness (6), and respectively setting the extended lengths of the two probe assemblies (4) according to the length of a loop of the measured wire harness (6) and assembling;
the probes of the probe assemblies (4) are respectively inserted into the two corresponding connectors on the measured wire harness (6), the signals of the measured wire harness (6) are collected and input into the control module (1), and the control module (1) judges the signal values and feeds back the detection results through the prompting unit (7).
9. The automobile wire harness fault detection method according to claim 8, wherein the control module (1) judges the signal value, and specifically executes the following steps:
when the voltage signal fault of the automobile wire harness is detected, if the voltage of the detected wire harness (6) is detected to be smaller than a first voltage threshold value, the control module (1) judges that the voltage is too low; if the voltage of the detected wire harness (6) is detected to be greater than or equal to a first voltage threshold and smaller than a second voltage threshold, the control module (1) judges that the voltage is abnormal; if the voltage of the detected wire harness (6) is detected to be greater than or equal to the second voltage threshold and less than or equal to the third voltage threshold, the control module (1) judges that the voltage is normal; if the voltage of the detected wire harness (6) is detected to be larger than a third voltage threshold value, the control module (1) judges that the voltage is too high;
when the automobile wire harness resistance value signal fault is detected, if the resistance value of the detected wire harness (6) is detected to be smaller than a first resistance value threshold value, the control module (1) judges that the resistance value is normal; if the resistance value of the detected wire harness (6) is detected to be larger than or equal to the first resistance value threshold value and smaller than or equal to the second resistance value threshold value, the control module (1) judges that the wire harness is abnormal; if the resistance value of the detected wire harness (6) is larger than the second resistance value threshold value, the control module (1) judges that the wire harness is in a fault.
10. The automobile wire harness fault detection method according to claim 9, wherein the detection result is fed back through a prompt unit (7), and the following steps are specifically executed:
when the voltage signal fault of the automobile wire harness is detected, if the voltage is detected to be too low or too high, the display screen (72) displays the measured value, the loudspeaker (73) plays that the voltage is too low, and the red indicator lamp (71) is lightened;
if the voltage abnormality is detected, the display screen (72) displays the measured value, the loudspeaker (73) plays the voltage abnormality, and the yellow indicator lamp (71) is lightened;
if the voltage is detected to be normal, the display screen (72) displays the measured value, the loudspeaker (73) plays that the voltage is normal, and a green indicator lamp (71) is lightened;
when the automobile wire harness resistance value signal fault is detected, if the resistance value is detected to be normal, the display screen (72) displays the measured value, the loudspeaker (73) plays that the resistance value is normal, and a green indicator lamp (71) is lightened;
if the resistance is detected to be abnormal, the display screen (72) displays the measured value, the loudspeaker (73) plays that the resistance is abnormal, and the yellow indicator lamp (71) is lightened;
if the wire harness fault is detected, the display screen (72) displays the measured value, the loudspeaker (73) plays the situation that the resistance value is too high, and the red indicator lamp (71) is lightened.
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| CN202210320788.9A CN114779003A (en) | 2022-03-29 | 2022-03-29 | Automobile wire harness fault detection device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116183981A (en) * | 2023-04-04 | 2023-05-30 | 广汽埃安新能源汽车股份有限公司 | Wire harness detection device and method |
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| CN103499764A (en) * | 2013-10-14 | 2014-01-08 | 奇瑞汽车股份有限公司 | Car door wiring harness plug-in detection equipment |
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| CN108627734A (en) * | 2018-07-03 | 2018-10-09 | 无锡吉兴汽车声学部件科技有限公司 | A kind of automobile ceiling harness energization monitor station |
| CN109254235A (en) * | 2018-11-26 | 2019-01-22 | 重庆长安汽车股份有限公司 | The insulation monitoring device and method of new-energy automobile exchange harness |
| CN109375612A (en) * | 2018-11-12 | 2019-02-22 | 深圳新动力教育科技有限公司 | A kind of signal measurement apparatus and its measurement method |
| CN214492626U (en) * | 2019-11-08 | 2021-10-26 | 保时捷股份公司 | Charging device and testing device for charging power battery of electric vehicle |
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| CN201600428U (en) * | 2010-03-10 | 2010-10-06 | 天津富奥电装空调有限公司 | Wire harness conduction detecting device |
| CN103499764A (en) * | 2013-10-14 | 2014-01-08 | 奇瑞汽车股份有限公司 | Car door wiring harness plug-in detection equipment |
| CN104502777A (en) * | 2014-11-21 | 2015-04-08 | 北京交控科技有限公司 | Method of detecting anomaly of line between vehicle-mounted automatic protection system and speed sensor |
| CN108627734A (en) * | 2018-07-03 | 2018-10-09 | 无锡吉兴汽车声学部件科技有限公司 | A kind of automobile ceiling harness energization monitor station |
| CN109375612A (en) * | 2018-11-12 | 2019-02-22 | 深圳新动力教育科技有限公司 | A kind of signal measurement apparatus and its measurement method |
| CN109254235A (en) * | 2018-11-26 | 2019-01-22 | 重庆长安汽车股份有限公司 | The insulation monitoring device and method of new-energy automobile exchange harness |
| CN214492626U (en) * | 2019-11-08 | 2021-10-26 | 保时捷股份公司 | Charging device and testing device for charging power battery of electric vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116183981A (en) * | 2023-04-04 | 2023-05-30 | 广汽埃安新能源汽车股份有限公司 | Wire harness detection device and method |
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Application publication date: 20220722 |