CN115865746A - Automatic testing method, device and system for low-frequency cable harness - Google Patents
Automatic testing method, device and system for low-frequency cable harness Download PDFInfo
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- CN115865746A CN115865746A CN202211556155.4A CN202211556155A CN115865746A CN 115865746 A CN115865746 A CN 115865746A CN 202211556155 A CN202211556155 A CN 202211556155A CN 115865746 A CN115865746 A CN 115865746A
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Abstract
The invention discloses a method, a device and a system for automatically testing low-frequency cable harnesses, which relate to the technical field of power testing and are used for acquiring principle information of each cable harness in equipment to be tested; configuring communication link information and test data information of each cable harness based on principle information of each cable harness; sending test data to a communication link of a corresponding cable harness according to the test instruction so as to obtain the communication state and the output result of the cable harness; according to the invention, by configuring the principle information of each cable harness in the equipment to be tested in advance, the automatic test can be completed only by designating the corresponding cable harness during the test, so that the test efficiency and accuracy are improved, and the disassembly treatment of the equipment to be tested is also avoided.
Description
Technical Field
The invention relates to the technical field of power testing, in particular to a method, a device and a system for automatically testing a low-frequency cable harness.
Background
After the cables and the wire harnesses are assembled, the open circuit, short circuit and conduction conditions of the cables need to be tested, but the on-off test of the cables in most industries still stays at a manual stage, a universal meter or a buzzer is used, two persons are matched, and the on-off detection is carried out point by point. In the traditional method, a universal meter or a buzzer is used, two persons are matched, and on-off detection is carried out point by point according to a drawing, so that the method is low in testing efficiency; when the multi-core cable is tested, time and labor are wasted, and mistakes and leaks are easy to occur.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: when the low-frequency cable harness is tested, the traditional manual testing efficiency is low, and the problem of error and leakage is easily caused when equipment with a plurality of harnesses needs to be disassembled for testing; according to the method, the system and the device for automatically testing the low-frequency cable harnesses, principle information configuration is carried out on each cable harness in the device to be tested in advance, and the automatic test can be completed only by appointing the corresponding cable harness during the test, so that the test efficiency and the test accuracy are improved, and the disassembly treatment of the device to be tested is avoided.
The invention is realized by the following technical scheme:
the scheme provides a low-frequency cable harness automatic testing method, which comprises the following steps:
acquiring principle information of each cable harness in the equipment to be tested;
configuring communication link information and test data information of each cable harness based on principle information of each cable harness;
and sending test data to the communication link of the corresponding cable harness according to the test instruction so as to obtain the communication state and the output result of the cable harness.
The working principle of the scheme is as follows: the traditional manual testing efficiency is low, and the problem of error and leakage is easily caused when the machine is required to be disassembled for testing equipment with a plurality of wire harnesses; according to the method, the system and the device for automatically testing the low-frequency cable harnesses, principle information configuration is carried out on each cable harness in the equipment to be tested in advance, and the automatic test can be completed only by appointing the corresponding cable harness during the test, so that the test efficiency and the test accuracy are improved, and the disassembly treatment of the equipment to be tested is avoided.
The further optimization scheme is that the principle information comprises electric element parameter information on the cable harness and cable harness parameter information. The principle information of each cable harness in the equipment to be tested can be obtained according to equipment delivery information, and is mainly electrical element parameter information such as resistance parameters and capacitance parameters of the cable harness and parameters such as working voltage and working current of the cable harness.
A further optimization scheme is that the communication link information includes: the system comprises a communication serial port number, a communication frequency, a communication data bit, a communication check bit, a communication stop bit and a serial port switch.
The scheme supports multiple paths of low-frequency cable harnesses to complete automatic testing, communication link information and test information are configured one by one according to principle information of each cable harness of the equipment to be tested, one or more cable harnesses can be automatically tested in a targeted mode, a case of the equipment to be tested does not need to be disassembled, and meanwhile, each cable harness can be tested.
The scheme also provides a low-frequency cable harness automatic test system for realizing the low-frequency cable harness automatic test method, which comprises the following steps:
the acquisition module is used for acquiring principle information of each cable harness in the equipment to be tested;
the configuration module is used for configuring the communication link information and the test data information of each cable harness based on the principle information of each cable harness;
and the test module is used for sending test data to the communication link of the corresponding cable harness according to the test instruction so as to obtain the communication state and the output result of the cable harness.
The automatic test system for the low-frequency cable harness is matched with a corresponding software system to display an output result and a communication state in real time.
The scheme also provides a low-frequency cable harness automatic testing device, which is used for realizing the low-frequency cable harness automatic testing method, and comprises the following steps:
the PC is used for sending a communication instruction and a test instruction to the first processing board U1 and the second processing board U2;
the first processing board U1 is used for receiving a serial port communication instruction and a test instruction sent by the PC and inputting test data to a low-frequency cable harness to be tested;
and the second processing board U2 is used for receiving serial port communication instructions and test instructions sent by the PC and also used for receiving output results of the low-frequency cable harness to be tested.
The further optimization scheme is that the method further comprises the following steps: the power amplifier comprises a first serial interface COM1, a second serial interface COM2, a first power amplifier interface SW1 and a second power amplifier interface SW2;
the PC is accessed to the first processing board U1 through the first serial interface COM1 for serial port communication, and the PC is accessed to the second processing board U2 through the second serial interface COM2 for serial port communication;
the first processing board U1 is accessed to the first processing board U1 through the first serial interface COM1 and the first power amplifier interface SW1 in sequence to supply power to the first processing board U1, and the second processing board U2 is accessed to the second processing board U2 through the second serial interface COM1 and the second power amplifier interface SW1 in sequence to supply power to the second processing board U2.
The further optimization scheme is that the system also comprises an input test interface and an output test interface;
the first processing board U1 inputs test data to the low-frequency cable harness to be tested through the input test interface, and the second processing board U2 receives an output result of the low-frequency cable harness to be tested through the output test interface.
The further optimization scheme is that the system also comprises a second output interface J5 and a first input interface J6; the second output interface J5 is connected with the red meter pen and outputs +5V voltage; the first input interface J6 is connected with the black list pen and is grounded through the buzzer B1.
The further optimization scheme is that the models of the first processing plate U1 and the second processing plate U2 are Z100mini.
The further optimization scheme is that the device further comprises an LED lamp, and the LED lamp is turned on when power is supplied to the first processing board U1 and the second processing board U2.
Power supply: the first serial interface COM1 is connected to a USB port of a PC, the first serial interface COM1 is connected with a first power amplifier interface SW1, and when the first serial interface SW1 is opened, a +5V power supply is input to supply power to a first processing board U1 (science and technology Z100mini in the common world), and an LED1 is lightened. The second serial interface COM2 is connected with the PC USB port, the second serial interface COM2 is connected with the second power amplifier interface SW2, and when the second power amplifier interface SW2 is opened, a +5V power supply is input to supply power to the second processing board U2 (science and technology Z100mini in the common world), and the LED2 is lightened.
Serial port communication: a first serial interface COM1 is connected to a USB port of a PC, and the first serial interface COM1 is connected with a first processing board U1 (science and technology Z100mini in the general province) to carry out serial communication. The second processing board COM2 is connected to the USB port of the PC, and the second processing board COM2 is connected to the second processing board U2 (science and technology Z100mini in general) for serial communication.
Signal flow: and sending a serial port communication instruction to the first processing board U1 through PC upper computer software, and recording pin definition of a sending end. The first processing board U1 controls the high and low level states of the I/O port according to the received instruction, the first processing board U1 is respectively connected with the input test interfaces J1 and J2 (the I/O port of the first processing board U1 is led out to the socket), and the cable input end is connected during testing through the transfer cable L1. The cable output end is connected to the output test interfaces J3 and J4 respectively through the adapter cable L2 (the I/O port of the second processing board U2 is led out to the socket), when the I/O port of the second processing board U2 receives a high level signal, a serial port communication instruction is sent to the PC through the second serial port COM2, and the PC judges received pin definition through upper computer software according to the received instruction. And circularly sending commands through the upper computer, circularly receiving the commands, and automatically recording the definition of the corresponding pins of the cable.
Automatic test function: and setting an input/output serial port and opening the serial port, clicking an upper computer software start test button after the tested cable is connected, checking a test result in a test result column, and automatically generating a test report after the test is finished.
Automatic data comparison function: and opening the template on the upper computer software, selecting a test template corresponding to the cable, clicking a data comparison button, and automatically judging whether the corresponding relation of the cable is consistent with the template.
Report functions: after the test is finished, forming a corresponding relation and generating a test report;
manual test function: the second output interface J5 is connected with the red meter pen, and the output +5V voltage, the black meter pen is connected to second input interface J6, inserts GND through bee calling organ B1, and when being switched on by the test cable, the bee calling organ makes a sound, shows that the cable switches on.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention provides a method, a system and a device for automatically testing a low-frequency cable harness, and relates to the technical field of power testing; according to the invention, by configuring the principle information of each cable harness in the equipment to be tested in advance, the automatic test can be completed only by designating the corresponding cable harness during the test, so that the test efficiency and accuracy are improved, and the disassembly treatment of the equipment to be tested is also avoided.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort. In the drawings:
FIG. 1 is a schematic flow chart of a method for automatically testing a low frequency cable harness;
FIG. 2 is a schematic diagram of the principle of the automatic testing device for low frequency cable harness;
FIG. 3 is a schematic view of a low frequency cable harness automatic test system;
FIG. 4 is a diagram illustrating the definition of a short circuit fault or pin found by the automatic test system for the cable harness;
FIG. 5 is a display diagram showing the export of reports from the automatic testing system for cable harnesses.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
After the cables and the wire harnesses are assembled, the open circuit, short circuit and conduction conditions of the cables need to be tested, but the on-off test of the cables in most industries still stays at a manual stage, a universal meter or a buzzer is used, two persons are matched, and the on-off detection is carried out point by point.
In the traditional method, a universal meter or a buzzer is used, two persons are matched, and on-off detection is carried out point by point according to a drawing, so that the method is low in testing efficiency; when the multi-core cable is tested, time and labor are wasted, and mistakes and leaks are easy to occur.
In order to solve the above problems, the present solution provides the following embodiments:
example 1
The embodiment provides an automatic testing method for a low-frequency cable harness, as shown in fig. 1, including:
acquiring principle information of each cable harness in equipment to be tested;
configuring communication link information and test data information of each cable harness based on principle information of each cable harness;
and sending test data to the communication link of the corresponding cable harness according to the test instruction so as to obtain the communication state and the output result of the cable harness.
The principle information includes electrical component parameter information on the cable harness and cable harness parameter information.
The communication link information includes: the system comprises a communication serial port number, a communication frequency, a communication data bit, a communication check bit, a communication stop bit and a serial port switch.
Example 2
The embodiment provides an automatic test system for a low-frequency cable harness, which is used for implementing the automatic test method for the low-frequency cable harness described in embodiment 1, and the method includes the following steps:
the acquisition module is used for acquiring the principle information of each cable harness in the equipment to be tested;
the configuration module is used for configuring the communication link information and the test data information of each cable harness based on the principle information of each cable harness;
and the test module is used for sending test data to the communication link of the corresponding cable harness according to the test instruction so as to obtain the communication state and the output result of the cable harness.
The automatic test system for the low-frequency cable harness is matched with a corresponding software system to display an output result and a communication state in real time. As shown in fig. 3, the left side is provided with communication settings, and a user sets communication link information of each cable harness according to requirements, including a communication serial number, a communication frequency, a communication data bit, a communication check bit, a communication stop bit and a serial switch.
And communication state data and test results can be displayed in real time in the communication process.
As shown in fig. 4, when a short circuit occurs in a certain cable harness or when 1 pair of multiple pins are defined, a column of the passing status is displayed correspondingly and timely, and a faulty cable harness is positioned more quickly.
As shown in fig. 5, the test results for each cable harness can be exported in the form of a report, which is convenient for comparison and observation.
Example 3
The present embodiment provides an automatic testing apparatus for a low frequency cable harness, which is used to implement the automatic testing method for a low frequency cable harness described in embodiment 1, and as shown in fig. 2, the automatic testing apparatus includes:
the PC is used for sending a communication instruction and a test instruction to the first processing board U1 and the second processing board U2;
the first processing board U1 is used for receiving a serial port communication instruction and a test instruction sent by the PC and inputting test data to a low-frequency cable harness to be tested;
and the second processing board U2 is used for receiving serial port communication instructions and test instructions sent by the PC and also used for receiving output results of the low-frequency cable harness to be tested.
Further comprising: the power amplifier comprises a first serial interface COM1, a second serial interface COM2, a first power amplifier interface SW1 and a second power amplifier interface SW2;
the PC is accessed to the first processing board U1 through the first serial interface COM1 for serial port communication, and the PC is accessed to the second processing board U2 through the second serial interface COM2 for serial port communication;
the first processing board U1 is accessed to the first processing board U1 through the first serial interface COM1 and the first power amplifier interface SW1 in sequence to supply power to the first processing board U1, and the second processing board U2 is accessed to the second processing board U2 through the second serial interface COM1 and the second power amplifier interface SW1 in sequence to supply power to the second processing board U2.
The test system also comprises an input test interface and an output test interface;
the first processing board U1 inputs test data to the low-frequency cable harness to be tested through the input test interface, and the second processing board U2 receives an output result of the low-frequency cable harness to be tested through the output test interface.
The device also comprises a second output interface J5 and a first input interface J6; the second output interface J5 is connected with the red meter pen and outputs +5V voltage; the first input interface J6 is connected with the black list pen and is grounded through the buzzer B1.
The model of the first processing board U1 and the second processing board U2 is Z100mini.
The LED lamp is turned on when power is supplied to the first processing board U1 and the second processing board U2.
Power supply: the first serial interface COM1 is connected to a USB port of a PC, the first serial interface COM1 is connected with a first power amplifier interface SW1, and when the first serial interface SW1 is opened, a +5V power supply is input to supply power to a first processing board U1 (science and technology Z100mini in the common world), and an LED1 is lightened. The second serial interface COM2 is connected with the PC USB port, the second serial interface COM2 is connected with the second power amplifier interface SW2, and when the second power amplifier interface SW2 is opened, a +5V power supply is input to supply power to the second processing board U2 (science and technology Z100mini in the common world), and the LED2 is lightened.
Serial port communication: the first serial interface COM1 is accessed through a USB port of the PC, and the first serial interface COM1 is connected with a first processing board U1 (science and technology Z100mini in the common China) to carry out serial communication. The second processing board COM2 is connected to the USB port of the PC, and the second processing board COM2 is connected to the second processing board U2 (science and technology Z100mini in general) for serial communication.
Signal flow: and sending a serial port communication instruction to the first processing board U1 through PC upper computer software, and recording pin definition of a sending end. The first processing board U1 controls the high and low level states of the I/O port according to the received instruction, the first processing board U1 is respectively connected with the input test interfaces J1 and J2 (the I/O port of the first processing board U1 is led out to the socket), and the cable input end is connected during testing through the transfer cable L1. The cable output end is connected to the output test interfaces J3 and J4 respectively through the adapter cable L2 (the I/O port of the second processing board U2 is led out to the socket), when the I/O port of the second processing board U2 receives a high level signal, a serial port communication instruction is sent to the PC through the second serial port COM2, and the PC judges received pin definition through upper computer software according to the received instruction. And circularly sending commands through the upper computer, circularly receiving the commands, and automatically recording the definition of the corresponding pins of the cable.
Automatic test function: and setting an input/output serial port and opening the serial port, clicking an upper computer software start test button after the tested cable is connected, checking a test result in a test result column, and automatically generating a test report after the test is finished.
Automatic data comparison function: and opening the template on the upper computer software, selecting a test template corresponding to the cable, clicking a data comparison button, and automatically judging whether the corresponding relation of the cable is consistent with the template.
Report functions: after the test is finished, forming a corresponding relation and generating a test report;
manual test function: the second output interface J5 is connected with the red meter pen to output +5V voltage, the second input interface J6 is connected with the black meter pen, the GND is connected to the GND through the buzzer B1, and when the tested cable is conducted, the buzzer makes a sound to indicate that the cable is conducted.
The device supports 90 paths of low-frequency cable harnesses to complete automatic testing, improves testing efficiency, requires two persons to perform matching testing for 90-core low-frequency cable harness detection, has testing time of about 1 hour, and completes the testing 1 minute after the automatic testing is adopted; the device can also carry out data comparison, and is convenient for quick positioning of cable faults; the system has a report export function and realizes paperless recording; the system comprises a plurality of test modes, an automatic test mode and a manual test mode; the cable, the cable to the case and the cable in the case can be tested.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A low-frequency cable harness automatic test method is characterized by comprising the following steps:
acquiring principle information of each cable harness in the equipment to be tested;
configuring communication link information and test data information of each cable harness based on principle information of each cable harness;
and sending test data to the communication link of the corresponding cable harness according to the test instruction so as to obtain the communication state and the output result of the cable harness.
2. The automatic testing method for the low-frequency cable harness according to claim 1, wherein the principle information comprises parameter information of electrical components on the cable harness and parameter information of the cable harness.
3. The automatic testing method for the low-frequency cable harness according to claim 1, wherein the communication link information comprises: the device comprises a communication serial port number, a communication frequency, a communication data bit, a communication check bit, a communication stop bit and a serial port switch.
4. An automatic test system for a low-frequency cable harness, which is used for implementing the automatic test method for the low-frequency cable harness according to any one of claims 1 to 3, and comprises the following steps:
the acquisition module is used for acquiring the principle information of each cable harness in the equipment to be tested;
the configuration module is used for configuring the communication link information and the test data information of each cable harness based on the principle information of each cable harness;
and the test module is used for sending test data to the communication link of the corresponding cable harness according to the test instruction so as to obtain the communication state and the output result of the cable harness.
5. An automatic testing device for a low-frequency cable harness, which is used for realizing the automatic testing method for the low-frequency cable harness according to any one of claims 1 to 3, and comprises the following steps:
the PC is used for sending a communication instruction and a test instruction to the first processing board U1 and the second processing board U2;
the first processing board U1 is used for receiving a serial port communication instruction and a test instruction sent by the PC and inputting test data to a low-frequency cable harness to be tested;
and the second processing board U2 is used for receiving serial port communication instructions and test instructions sent by the PC and also used for receiving output results of the low-frequency cable harness to be tested.
6. The automatic testing device for the low-frequency cable harness according to claim 5, further comprising: the power amplifier comprises a first serial interface COM1, a second serial interface COM2, a first power amplifier interface SW1 and a second power amplifier interface SW2;
the PC is accessed to the first processing board U1 through the first serial interface COM1 for serial port communication, and the PC is accessed to the second processing board U2 through the second serial interface COM2 for serial port communication;
the first processing board U1 is accessed to the first processing board U1 through the first serial interface COM1 and the first power amplifier interface SW1 in sequence to supply power to the first processing board U1, and the second processing board U2 is accessed to the second processing board U2 through the second serial interface COM1 and the second power amplifier interface SW1 in sequence to supply power to the second processing board U2.
7. The automatic testing device for the low-frequency cable harness according to claim 5, further comprising an input testing interface and an output testing interface;
the first processing board U1 inputs test data to the low-frequency cable harness to be tested through the input test interface, and the second processing board U2 receives an output result of the low-frequency cable harness to be tested through the output test interface.
8. The automatic testing device for the low-frequency cable harness according to claim 5, further comprising a second output interface J5 and a first input interface J6; the second output interface J5 is connected with the red meter pen and outputs +5V voltage; the first input interface J6 is connected with the black list pen and then is grounded through the buzzer B1.
9. The automatic testing device for the low-frequency cable harness as claimed in claim 5, wherein the first processing board U1 and the second processing board U2 are Z100mini in model number.
10. The automatic low-frequency cable harness testing device as claimed in claim 6, further comprising an LED lamp, wherein the LED lamp is turned on when power is supplied to the first processing board U1 and the second processing board U2.
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| CN202211556155.4A CN115865746A (en) | 2022-12-06 | 2022-12-06 | Automatic testing method, device and system for low-frequency cable harness |
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| CN202211556155.4A CN115865746A (en) | 2022-12-06 | 2022-12-06 | Automatic testing method, device and system for low-frequency cable harness |
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| CN1924597A (en) * | 2005-08-29 | 2007-03-07 | 中兴通讯股份有限公司 | Cable detection apparatus and scanning method thereof |
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2022
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| CN1924597A (en) * | 2005-08-29 | 2007-03-07 | 中兴通讯股份有限公司 | Cable detection apparatus and scanning method thereof |
| CN101937038A (en) * | 2009-07-02 | 2011-01-05 | 中国第一汽车集团公司无锡油泵油嘴研究所 | Intelligent multi-core cable harness detection device |
| CN111929617A (en) * | 2020-10-10 | 2020-11-13 | 天津飞旋科技有限公司 | Cable tester, cable testing method and cable testing system |
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