CN112034388A - Automatic wire harness detection system and detection method - Google Patents
Automatic wire harness detection system and detection method Download PDFInfo
- Publication number
- CN112034388A CN112034388A CN202010947413.6A CN202010947413A CN112034388A CN 112034388 A CN112034388 A CN 112034388A CN 202010947413 A CN202010947413 A CN 202010947413A CN 112034388 A CN112034388 A CN 112034388A
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- wire harness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/55—Testing for incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses an automatic detection system and a method for a wire harness, wherein the system comprises a control circuit board, an input detection interface, an output detection interface, a power module and a display module, wherein the input detection interface and the output detection interface are respectively used for being connected to an input port and an output port of the wire harness during detection; the output end of the control panel is connected with the display module and is used for displaying the detection result information; the power module supplies power for the control circuit board. The invention realizes the automatic detection and display of the wire harness and can simply and quickly detect the wire harness.
Description
Technical Field
The invention relates to the field of automobile wire harness detection, in particular to an automatic detection system and method for an automobile wire harness.
Background
The wire harness is connected with various equipment of the whole automobile in the automobile to transmit current signals, the wire harness is integrally manufactured by a large number of conducting wires and extends to the outside to form an input end and an output end, and the wire harness is detected before being used in order to ensure the safety of the wire harness and eliminate connection errors or faults.
However, many units detect the wiring harness conduction means in the production or use field quite late at the present that the wiring harness of the automobile is checked by using simple instruments such as a multimeter, a buzzer sound or an LED indicator lamp and the like, and each wire needs to be measured one by one to check on/off, so that the conduction detection is slow in speed, low in efficiency and easy to cause error detection or missing detection due to the fact that workers are easy to fatigue.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an automatic wire harness detection system which is used for realizing automatic detection and display of a wire harness and can simply and quickly detect the wire harness.
In order to achieve the purpose, the invention adopts the technical scheme that: an automatic wiring harness detection system comprises a control circuit board, an input detection interface, an output detection interface, a power supply module and a display module, wherein the input detection interface and the output detection interface are respectively used for being connected to an input port and an output port of a wiring harness during detection; the output end of the control panel is connected with the display module and is used for displaying the detection result information; the power module supplies power for the control circuit board.
The control circuit board comprises a processor, a memory, a high-level output loop and a high-level acquisition loop, wherein the processor is respectively connected with the high-level output loop, the high-level acquisition loop and the memory, and the memory is used for storing detection data; the high-level loop is used for outputting a high level according to the control of the processor, and the high-level acquisition loop is used for acquiring a level signal of the output end of the wiring harness.
The control circuit board further comprises a communication module, and the communication module is connected with the processor and used for uploading data in the memory to an upper computer.
The input detection interface and the output detection interface comprise a plurality of contacts, wire harness input/output port contact points corresponding to the contacts are called contact ends, the contacts and the contact ends are correspondingly contacted together when being connected, and each input contact and each output contact are provided with unique identifiers which can be identified by a processor in the control circuit board.
A detection method of a wire harness automatic detection system is characterized in that an input detection interface is connected to an input port of a wire harness so as to enable an input contact to be in contact with a corresponding contact end in the input port of the wire harness, and an output detection interface is connected to an output port of the wire harness so as to enable an output contact to be in contact with a corresponding contact end in the output port of the wire harness;
the processor sends out detection signals through the input detection interface and receives corresponding signals transmitted by the warp beam through the output detection interface, judges whether the electric signals are received or not and detects and judges faults according to the condition of the received electric signals.
And after the fault state of the wire harness at the position is judged according to the condition of the received electric signal, the detection result is stored and displayed.
And when the received electric signal is the same as the electric signal sent by the processor, judging that the wire harness is normal at the moment, otherwise, judging that the wire harness is in a fault.
When the processor cannot receive the electric signal transmitted from the input end through the wire harness from the output end, the processor judges that the circuit is broken; when a plurality of contact terminals at the output end receive electric signals transmitted by circuits corresponding to the same contact terminal, judging short-circuit faults; and the processor receives the point chip at the contact end corresponding to the non-input contact, and judges the connection error fault at the moment.
The invention has the advantages that: (1) the input detection interface and the output detection interface comprise a plurality of contacts, and each input and output contact has a unique identifier, so that false detection or missing detection is avoided, the error rate is reduced, and the accuracy is improved.
(2) The acquisition circuit is connected with the display and is used for displaying the wire harness detection result of the display and displaying corresponding instructions.
(3) After the wire harness is plugged into the corresponding socket, one end of the connector is connected with the main control chip, the main control chip sends out a detection signal, the signal is input to the main control chip through the other end of the wire harness, the main control chip detects a receiving signal through the corresponding pin, the conduction detection of a wire is realized, the main control chip automatically receives and sends out to complete the detection process, personnel are not needed to participate, the detection is simple, the speed is high, and the operation capacity of workers is reduced.
(4) The fault type of the wiring harness can be automatically detected, such as faults of broken circuit, short circuit, poor contact, connection error and the like of the wiring harness.
Drawings
The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a schematic diagram of the automatic wire harness detection system according to the present invention;
FIG. 2 is a schematic diagram of a control circuit board of the present invention;
FIG. 3 is a schematic view of a wiring harness fault condition of the present invention;
fig. 4 is a schematic diagram of the wiring harness detection control of the present invention.
Detailed Description
The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.
In order to realize the detection of the wire harness efficiently and accurately, the main technical scheme is that a fault detection device is designed, an input detection interface and an output detection interface are arranged on the surface of the device and are respectively used for being connected to an input port and an output port of the wire harness during detection, the input detection interface and the output detection interface comprise a plurality of contacts (a contact point of the wire harness input/output port is called a contact end, a contact point in the input/output detection interface of the detection device is called a contact point), each input contact and each output contact are provided with a unique identifier, a shell of the device is also provided with a control circuit board and a power supply module which are used for controlling the detection of the wire harness, and the detected condition is displayed by a display screen.
And secondly, a wiring harness fault detection method, wherein the input and output detection interface comprises a plurality of input and output contacts which are provided with unique identifiers. The input detection interface is connected to an input port of the wiring harness, so that the input contact is in contact with a corresponding contact end in the input port of the wiring harness, the output detection interface is connected to an output port of the wiring harness, so that the output contact is in contact with a corresponding contact end in the output port of the wiring harness, the input contacts are selected one by one from the input detection interface to send electric signals to the corresponding contact ends, the main control chip sends detection signals to receive corresponding signals, whether the output contacts of the input detection interface receive the electric signals through the contact ends in contact is judged, and faults are detected and judged according to the condition of receiving the electric signals.
Fig. 1 shows a wiring harness fault detection device to achieve more accurate, efficient and automatic wiring harness fault detection, an input and output detection interface is led out from a device shell and respectively connected with an input port and an output port of a detection wiring harness, the input detection interface comprises a plurality of input contacts, the output detection interface comprises a plurality of output contacts, each input contact and each output contact have a unique identifier, a control circuit and a power circuit for controlling wiring harness detection are designed on the device shell, the control circuit board is connected with the input detection interface and the output detection interface and controls the input contacts in the input detection interface to send electric signals, the output contacts of the output detection interface to receive signals and send a high-level signal according to the condition that the input end receives the high-level signal, namely, the wiring harness detection device is used for controlling, recording and analyzing and judging the wiring harness detection, and obtaining a detection result. As shown in fig. 2, the control circuit comprises a processor, a memory, a communication module and a high level output loop, wherein the high level is collected; the main control chip in the control circuit sends out a detection signal, the signal is input to the main control chip through the other end of the wire harness, the main control chip detects a receiving signal through a corresponding pin to realize conduction detection of a wire, the acquisition circuit is connected with the communication module through an acquisition wire harness point, and the acquisition circuit is connected with the display to display a wire harness detection result. The power supply module is used for providing electric energy for the device, and the BUCK circuit is designed into 24V, 12V, 5V and other power supply voltages. Normally, a wire harness is made by integrating a large number of wires and is connected to external input ports and output ports, each input/output port usually contains a large number of contact ends, each contact end represents a line, that is, two ends of a line are respectively used as one contact end in the input port and one contact end in the output port, or one contact end of the input port necessarily corresponds to one contact end in the output port. Referring to fig. 3, in the case of no fault of the wiring harness, if the input contact n (1, 2) sends an electrical signal, the output terminal n receives the electrical signal. The wiring harness is subject to the following errors, see fig. 3, open circuit: the electric signal sent by the input contact terminal 1 cannot be transmitted to any output terminal; short-circuiting: the electric signal sent by the input contact 1 is received by the output contact 1 and the output contact 2 simultaneously; connection error: the electric signal sent by the input contact 1 is received by the output end 2, and the electric signal sent by the input contact 2 is received by the output end 1; no failure: if an input contact n (1, 2) sends an electrical signal and only the output contact n can receive this electrical signal. And if the number of the contacts for receiving the electric signals is 0, the wiring harness is open, if the number of the contacts is more than 1, the wiring harness is short-circuited, if the number of the contacts is equal to 1, but the input end is not matched with the output end, the wiring harness is wrongly connected.
FIG. 4 is a failure principle analysis of a detected harness:
(1) the wire harness is a passage: the left end of the main control chip outputs high level, and the right end of the main control chip is input with high level because of the wiring harness access.
(2) Short circuit of wire harness: the output port at the left end of the main control chip only has one output port to output high level, and the signal input end at the right end of the main control chip obtains more than one high level, so that the short circuit of the wire harness can be determined, the positions of the input ports of all high levels obtained at the input end of the main control chip can be known, and the short circuit of the wires can be known.
(3) And (3) breaking the wiring harness: the left end of the main control chip outputs high level, the high level is not obtained at the input end of the right end of the main control chip, the fact that the wiring harness is broken can be judged, and at the moment, the line of the input end of the wiring harness, which correspondingly receives the high level of the main control chip, is broken.
(4) Harness connection error: the input port at the left end of the main control chip only has one output port to output high level, and the input end of the main control chip only obtains one high level, but the two high levels are not connected with the same line, so that the fact that the line is connected incorrectly can be determined.
It is clear that the specific implementation of the invention is not restricted to the above-described embodiments, but that various insubstantial modifications of the inventive process concept and technical solutions are within the scope of protection of the invention.
Claims (8)
1. An automatic wire harness detection system is characterized in that: the control circuit board outputs an electric signal to the wire harness through the input detection interface and receives the electric signal through the output detection interface, and fault judgment is carried out according to the received electric signal; the output end of the control panel is connected with the display module and is used for displaying the detection result information; the power module supplies power for the control circuit board.
2. The automatic wire harness detection system as claimed in claim 1, wherein: the control circuit board comprises a processor, a memory, a high-level output loop and a high-level acquisition loop, wherein the processor is respectively connected with the high-level output loop, the high-level acquisition loop and the memory, and the memory is used for storing detection data; the high-level loop is used for outputting a high level according to the control of the processor, and the high-level acquisition loop is used for acquiring a level signal of the output end of the wiring harness.
3. The automatic wire harness detection system as claimed in claim 2, wherein: the control circuit board further comprises a communication module, and the communication module is connected with the processor and used for uploading data in the memory to an upper computer.
4. An automatic wire harness detection system as claimed in claim 1 or 2, wherein: the input detection interface and the output detection interface comprise a plurality of contacts, wire harness input/output port contact points corresponding to the contacts are called contact ends, the contacts and the contact ends are correspondingly contacted together when being connected, and each input contact and each output contact are provided with unique identifiers which can be identified by a processor in the control circuit board.
5. The detecting method of an automatic detecting system for wire harness according to any of claims 1-4, characterized in that: the input detection interface is connected to the input port of the wiring harness so that the input contact is in contact with a corresponding contact end in the input port of the wiring harness, and the output detection interface is connected to the output port of the wiring harness so that the output contact is in contact with a corresponding contact end in the output port of the wiring harness;
the processor sends out detection signals through the input detection interface and receives corresponding signals transmitted by the warp beam through the output detection interface, judges whether the electric signals are received or not and detects and judges faults according to the condition of the received electric signals.
6. The detecting method of an automatic detecting system for wire harness according to claim 1, wherein: and after the fault state of the wire harness at the position is judged according to the condition of the received electric signal, the detection result is stored and displayed.
7. The inspecting method of an automatic inspecting system for wiring harness according to claim 5 or 6, wherein: and when the received electric signal is the same as the electric signal sent by the processor, judging that the wire harness is normal at the moment, otherwise, judging that the wire harness is in a fault.
8. The detecting method of an automatic detecting system for wire harness according to claim 7, wherein: when the processor cannot receive the electric signal transmitted from the input end through the wire harness from the output end, the processor judges that the circuit is broken; when a plurality of contact terminals at the output end receive electric signals transmitted by circuits corresponding to the same contact terminal, judging short-circuit faults; and the processor receives the point chip at the contact end corresponding to the non-input contact, and judges the connection error fault at the moment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010947413.6A CN112034388A (en) | 2020-09-10 | 2020-09-10 | Automatic wire harness detection system and detection method |
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| CN202010947413.6A CN112034388A (en) | 2020-09-10 | 2020-09-10 | Automatic wire harness detection system and detection method |
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| CN112034388A true CN112034388A (en) | 2020-12-04 |
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| CN202010947413.6A Pending CN112034388A (en) | 2020-09-10 | 2020-09-10 | Automatic wire harness detection system and detection method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112698060A (en) * | 2020-12-14 | 2021-04-23 | 中科彭州智慧产业创新中心有限公司 | Detection device |
| CN112698244A (en) * | 2020-12-08 | 2021-04-23 | 丹阳众智信息科技有限公司 | Wire harness wireless detection system and method |
| CN113075588A (en) * | 2021-03-10 | 2021-07-06 | 天津捷强动力装备股份有限公司 | System special for JQB3 project line bundle detection |
| CN117250561A (en) * | 2023-11-09 | 2023-12-19 | 优联电气系统（苏州）有限公司 | Electrical harness detection method and system based on big data |
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