CN112698244A - Wire harness wireless detection system and method - Google Patents
Wire harness wireless detection system and method Download PDFInfo
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- CN112698244A CN112698244A CN202011444873.3A CN202011444873A CN112698244A CN 112698244 A CN112698244 A CN 112698244A CN 202011444873 A CN202011444873 A CN 202011444873A CN 112698244 A CN112698244 A CN 112698244A
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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
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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
- G01R31/55—Testing for incorrect line connections
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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
- G01R31/58—Testing of lines, cables or conductors
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Abstract
The invention relates to a system and a method for wirelessly detecting a wire harness. The wire harness detection device comprises an upper computer and a detection module, wherein a sheath of the wire harness can be inserted into the corresponding detection module; the detection module can be wirelessly connected with an upper computer; after a wire harness detection instruction is received, the detection module can enable a corresponding metal probe in the detection module and a sheath metal terminal connected with the metal probe to be in a high-level state; the detection module can send the level states of all current metal probes in the detection module to an upper computer, so that the upper computer records and stores the attribute information of the detection module with the metal probes in a high level state and the number information of the corresponding metal probes in the detection module; the upper computer can count to obtain detection loop information, and the upper computer compares the detection loop information obtained by counting with preset loop standard information so as to obtain the detection state of the wiring harness. The wire harness detection device can effectively realize the detection of the wire harness, is convenient to install and maintain, and improves the production efficiency.
Description
Technical Field
The present invention relates to a detection system and method, and more particularly, to a wireless detection system and method for a wire harness.
Background
In recent years, with the trend of automobile electronics, automobile wiring harnesses have become increasingly complex. This places higher demands on the quality control capabilities of automotive wiring harness manufacturers. Because the pencil becomes complicated, in process of production, the probability that the pencil misloading appears promotes greatly, and this makes the last detection process of pencil assembly become more important.
The basic principle of automobile wire harness detection is as follows: the testing of a single loop within the wiring harness is accomplished by energizing one end of the wiring harness and detecting the voltage condition at the other end, and so on until all loops in the wiring harness are tested. And finally, comparing the preset correct wire harness network relation according to the on-off relation of the wire harness loop obtained by testing, thereby judging whether the wire harness is assembled in place, and whether the wire harness is wrongly assembled or not, and whether the wire harness is neglected to be assembled or not.
At present, the existing wire harness detection table is composed of a lower computer, a module, a PC (personal computer) end, a rack and other auxiliary accessories in a physical structure.
A lower computer: the lower computer is a core device of the detection table and is used for sending and reading signals so as to complete detection and judgment of the wiring harness and feed back the result to a PC (computer). The core architecture of the lower computer is 'N signal acquisition +1 core mainboard', which is specifically introduced as follows: the signal acquisition board is used for sending and reading voltage signals, the core main board is used for calculating and comparing detected loop information with preset loop information (correct wiring harness loop information), and the result is sent to the PC through the interface board. The lower computer is usually located inside the detection table and is connected with the outside through a parallel port flat cable.
A PC terminal: the PC end is internally provided with PC end software, and the current mainstream PC end software is mainly used for sending a command to the lower computer, acquiring loop information sent by the lower computer and showing the current conduction state of the wire harness in a form of a graph or a netlist, so that the judgment of the connection relation of the wire harness is completed. The project file and other information of the PC side are stored in a file format.
A module: is arranged on the surface of the bench. The module consists of a structural part and a module circuit board. The structural part is usually milled into the shape of the opposite insertion end of the sheath according to the sheath of the wire harness by using special equipment, namely the sheath of the wire harness can be inserted into the module; and meanwhile, metal probes are arranged at the bottom of the module according to the arrangement of terminals in the sheath, the probes are connected to an adapter plate inside the rack through extension lines, and the probes are connected to a signal acquisition board in a lower case through the adapter plate. The circuit board part mainly drives a pneumatic element through a control electromagnetic valve to realize the functions of automatically locking the sheath, detecting air tightness and the like.
A rack: the main mechanical structure for placing all products. The operating platform is generally assembled by aluminum alloy and other materials, and has an internal space for placing a lower computer and other electrical equipment. In addition to the core architecture electrical product, the harness inspection station adds some necessary accessories, usually the following, depending on the product structure:
an adapter plate: the keysets passes through the winding displacement to be connected with the signal acquisition board, and evenly distributed makes things convenient for operating personnel to insert the next machine with the pencil in different positions in examining test table. Air bleed and air pump: and providing an air source for the module pneumatic element. Switching power supply: and providing power supply for the whole equipment.
At present, the general structure of the mode of detecting the wire harness is the same, and the structure is basically used for communication and reading and writing signals through parallel cables.
From the above description, it can be seen that the existing products have the following disadvantages:
1) the equipment is complicated. The equipment needs numerous accessories, the connection relation is complex, the flat cable for connection is heavy and long, and the volume of the lower machine is large. This results in long production commissioning periods of the product and an increased likelihood of incorrect assembly. Since the structure is a system combining multiple parts into a whole, it is difficult to find out which part the problem is in when the problem occurs, and the workload and the difficulty of the maintenance and the after-sale of the equipment are greatly increased. The lower computer stores and calculates data, the calculation capacity of the lower computer is occupied, and besides algorithm optimization and hardware updating, the space for improvement is difficult to achieve.
2) And the product is difficult to be produced in a standardized way. Because a fixed physical platform is needed, the number of points which can be detected by the device is fixed, and the platform has several specifications of 1.8 meters, 2.4 meters, 3.6 meters and the like. Different specifications require customization of cables, power lines and the like with different lengths, and standardized production cannot be realized. Therefore, in the face of more complex requirements, the flexibility of the traditional harness inspection station is insufficient, and in many cases, a non-standard system is required, which undoubtedly increases the complexity and cost of production.
3) And the application scene is single. The existing wire harness detection platform can only be used as an auxiliary detection product of a wire harness production line, namely, after the production of the production line is finished, the detection platform detects the product. In actual production, however, product errors occur during the production process. This "post-detection" approach is certainly not efficient enough. However, due to the limitations of the existing inspection platforms, the existing inspection platforms cannot be integrated into a production line or other application scenes.
4) And the test software of the upper computer has simple functions. Project file storage is also in a file form, and version management and data management are inconvenient. Data integrity and security cannot be guaranteed. The cooperation of the software and the device also requires manual setup adjustments.
5) And the cost is high. As mentioned above, when the detection device is manufactured, the aluminum alloy rack is required to be purchased, the lower computer circuit board and the lower computer case are produced, the flat cable is purchased, other accessories are purchased, the number of required parts is large, and the cost is high.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a wire harness wireless detection system and a wire harness wireless detection method, which can effectively realize the detection of a wire harness, are convenient to install and maintain, improve the production efficiency, and are safe and reliable.
According to the technical scheme provided by the invention, the wire harness wireless detection system comprises an upper computer and a plurality of detection modules which can be in adaptive connection with sheaths of wire harnesses, wherein the sheaths of the wire harnesses can be inserted into the corresponding detection modules, and after the sheaths of the wire harnesses are inserted into the detection modules, sheath metal terminals in the sheaths can be electrically connected with corresponding metal probes in the detection modules in a one-to-one correspondence manner;
the detection modules can be wirelessly connected with the upper computer, and after all the detection modules are wirelessly connected with the upper computer, the upper computer can send a wire harness detection instruction to the specified detection module; after a wire harness detection instruction is received, according to the wire harness detection instruction, a detection module can enable a corresponding metal probe in the detection module and a sheath metal terminal connected with the metal probe to be in a high-level state;
after the wire harness detection instruction is sent, the upper computer sends a state reading instruction to the rest of the detection modules, and after the state reading instruction is received, the detection modules can send the level states of all the current metal probes in the detection modules into the upper computer, so that the upper computer records and stores the attribute information of the detection modules with the metal probes in the high level state and the number information of the corresponding metal probes in the detection modules;
after N wiring harness detection instructions are sent and attribute information of N detection modules and number information of corresponding metal probes in the N detection modules are obtained, the upper computer can count to obtain detection loop information, and the upper computer compares the detection loop information obtained through counting with preset loop standard information to obtain the detection state of the wiring harness.
When the detection module places the metal probe in a high level state, the detection module can send the feedback information of the placed high level to the upper computer; and after receiving the set feedback information, the upper computer sends a state reading instruction to the other detection modules.
The wireless connection between the upper computer and the detection module comprises WIFI connection, Zigbee, lora or Bluetooth.
The detection module comprises a detection processor, the detection processor is electrically connected with the wireless network module, the power management module, the memory, the JTAG interface, the debugging serial port and the state indication module, and the detection processor can be wirelessly connected with the upper computer through the wireless network module.
A wire harness wireless detection method comprises an upper computer and a plurality of detection modules which can be in adaptive connection with sheaths of wire harnesses, wherein the sheaths of the wire harnesses can be inserted into the corresponding detection modules, and after the sheaths of the wire harnesses are inserted into the detection modules, sheath metal terminals in the sheaths can be electrically connected with corresponding metal probes in the detection modules in a one-to-one correspondence manner;
the detection modules can be wirelessly connected with the upper computer, and after all the detection modules are wirelessly connected with the upper computer, the upper computer can send a wire harness detection instruction to the specified detection module; after a wire harness detection instruction is received, according to the wire harness detection instruction, a detection module can enable a corresponding metal probe in the detection module and a sheath metal terminal connected with the metal probe to be in a high-level state;
after the wire harness detection instruction is sent, the upper computer sends a state reading instruction to the rest of the detection modules, and after the state reading instruction is received, the detection modules can send the level states of all the current metal probes in the detection modules into the upper computer, so that the upper computer records and stores the attribute information of the detection modules with the metal probes in the high level state and the number information of the corresponding metal probes in the detection modules;
after N wiring harness detection instructions are sent and attribute information of N detection modules and number information of corresponding metal probes in the N detection modules are obtained, the upper computer can count to obtain detection loop information, and the upper computer compares the detection loop information obtained through counting with preset loop standard information to obtain the detection state of the wiring harness.
When the detection module places the metal probe in a high level state, the detection module can send the feedback information of the placed high level to the upper computer; and after receiving the set feedback information, the upper computer sends a state reading instruction to the other detection modules.
The wireless connection between the upper computer and the detection module comprises WIFI connection, Zigbee, lora or Bluetooth.
The detection module comprises a detection processor, the detection processor is electrically connected with the wireless network module, the power management module, the memory, the JTAG interface, the debugging serial port and the state indication module, and the detection processor can be wirelessly connected with the upper computer through the wireless network module.
The invention has the advantages that:
1. adopt detection module and host computer wireless connection, no longer need winding displacement such as next computer and keysets, simple structure, installation and maintenance are convenient. The flat cable and other connecting wires are removed, so that the production period is greatly shortened.
2. The product is a standardized product: the core component of the detection module is a module mainboard, and industrial automatic production can be completely realized. The installation is convenient and fast by matching with different modules. The manufacturer can customize modules with different numbers according to different wiring harness types, and the modules can be combined randomly, so that the flexibility is greatly improved.
3. The upper computer realizes the calculation function of the lower computer and simplifies the structure of the test system. The data of the existing project are stored in a database of an upper computer, the defects of a file system do not exist, the integrity and the safety of all the data are guaranteed, and CAD documents can be directly imported into a newly-built project in multi-party cooperative operation software. The data of each detection module connected with the upper computer can be stored without the operations such as serial port configuration and the like with the lower computer, and incorrect signals can be automatically identified and eliminated. The test time for processing complex items is greatly shortened, and the test algorithm can be improved.
4. The application scene is rich: because simple structure is light, wireless detection module can be used to be applied to multiple scene, not only can examine the platform like the tradition and assemble in fixed rack, can also be according to the production demand, directly imbed in the pencil production water line, realize testing in the production, have the assembly error to show in real time, great improvement production efficiency and production correct rate, every assembly line has saved two testers' cost of labor simultaneously. Meanwhile, the novel multifunctional pen can also be used as a portable product. The wire harness with questionable quality can be brought to a customer site for field test. These are advantages not available with conventional devices.
5. The cost is low: the detection system formed by the upper computer and the detection module can be conveniently built, and a user does not need to customize an aluminum alloy rack for the test system due to light weight. The tool wood board, the tool support and even the temporary test can be tested on a common tool table. Therefore, the material cost, the transportation cost and the production cost of the wire harness detection equipment are greatly saved.
Drawings
FIG. 1 is a block diagram of the system of the present invention.
FIG. 2 is a block diagram of the detection module of the present invention.
Description of reference numerals: the system comprises a host computer 1, a wireless gateway 2, a detection module 3, a detection processor 4, a wireless network module 5, a power management module 6, a memory 7, an JTAG interface 8, a debugging serial port 9 and a state indication module 10.
Detailed Description
The invention is further illustrated by the following specific figures and examples.
As shown in fig. 1: in order to effectively realize the detection of the wire harness, the wire harness detection device comprises an upper computer 1 and a plurality of detection modules 3 which can be in adaptive connection with sheaths of the wire harness, the sheaths of the wire harness can be inserted in the corresponding detection modules 3, and after the sheaths of the wire harness are inserted in the detection modules 3, sheath metal terminals in the sheaths can be in one-to-one corresponding electrical connection with corresponding metal probes in the detection modules 3;
the detection modules 3 can be wirelessly connected with the upper computer 1, and after all the detection modules 3 are wirelessly connected with the upper computer 1, the upper computer 1 can send a wire harness detection instruction to the specified detection modules 3; after a wire harness detection instruction is received, according to the wire harness detection instruction, the detection module 3 can place a corresponding metal probe in the detection module 3 and a sheath metal terminal connected with the metal probe in a high-level state;
after the wire harness detection instruction is sent, the upper computer 1 sends a state reading instruction to the rest of the detection modules 3, and after the state reading instruction is received, the detection modules 3 can send the level states of all the current metal probes in the detection modules 3 into the upper computer 1, so that the upper computer 1 records and stores the attribute information of the detection modules 3 with the metal probes in the high level state and the serial number information of the corresponding metal probes in the detection modules 3;
after N wire harness detection instructions are sent and attribute information of the N detection modules 3 and number information of corresponding metal probes in the N detection modules 3 are obtained, the upper computer 1 can count to obtain detection loop information, and the upper computer 1 compares the detection loop information obtained through counting with preset loop standard information to obtain the detection state of the wire harness.
Specifically, the wire harness generally includes a wire body and sheaths located at two ends of the wire body, and a specific matching relationship between the wire body and the sheaths is consistent with that in the prior art, wherein the sheaths can realize connection and matching such as plugging in when in use, which is well known to those skilled in the art and is not described herein again. For a wire harness, at least two sheaths are generally included, and the number of sheaths can be specifically selected according to actual needs, and is specifically known to those skilled in the art, and is not described herein again. There are typically one or more sheath metal terminals within the sheath, the number of which is selected according to the actual needs, as is well known to those skilled in the art. For the sheath metal terminals in one sheath, the sheath metal terminals are connected with the sheath metal terminals in the other sheath, i.e., both ends of one cable are formed.
In order to be matched with the sheath, the number of the detection modules 3 is not less than that of the sheath, the sheath is in one-to-one correspondence connection with the detection modules 3, all the detection modules 3 can be in wireless connection with the upper computer 1, and the upper computer 1 can adopt the existing common computer and other forms. When adopting wireless connection between detection module 3 and host computer 1, then detection module 3 can be connected the cooperation through detection module 3 can conveniently and the pencil of different specifications with appointed position need not fix, improves detection efficiency and convenience.
The sheath of the wire harness is generally connected with the detection module 3 in a splicing mode or the like, and after the sheath is spliced with the detection module 3, the sheath metal terminals in the sheath can be electrically connected with the corresponding metal probes in the detection module 3 in a one-to-one correspondence mode. In specific implementation, for a batch or a group of identical wire harnesses, the sheaths of the wire harnesses need to be connected and connected with the selected detection module 3, so that the sheath metal terminals in the sheaths can be electrically connected with the corresponding metal probes in the detection module 3 in a one-to-one correspondence manner, and the specific matching selection between the specific sheaths and the detection module 3 is consistent with that in the prior art, which is known to those skilled in the art specifically, and is not repeated here.
When the sheath of the wire harness is correspondingly connected with the detection module 3 and the detection module 3 is wirelessly connected with the upper computer 1, the upper computer 1 can send a wire harness detection instruction to the specified detection module 3; host computer 1 sends a pencil detection instruction to appointed detection module 3 through wireless mode in, and specific appointed detection module 3 can select according to actual need, specifically for this technical field personnel know, and it is no longer repeated here.
After receiving a wire harness detection instruction, according to the wire harness detection instruction, the detection module 3 can place a corresponding metal probe in the detection module 3 and a sheath metal terminal connected with the metal probe in a high level state. As can be seen from the above description, one or more metal probes are provided in the detection module 3, and after the detection module 3 analyzes the wire harness detection instruction, a corresponding metal probe can be selected to be placed in a high level state, so that when the metal probe is in the high level state, the sheath metal terminal connected to the metal probe is also in the high level state.
After the wire harness detection instruction is sent, the upper computer 1 sends a state reading instruction to the rest of the detection modules 3, and after the state reading instruction is received, the detection modules 3 can send the level states of all the current metal probes in the detection modules 3 into the upper computer 1 so as to record and store the attribute information of the detection modules 3 with the metal probes in the high level state and the serial number information of the corresponding metal probes in the detection modules 3 by the upper computer 1.
In specific implementation, as can be known from the corresponding relationship between the two sheath metal terminals in the wire harness, when one sheath metal terminal is in a high level state, the other sheath metal terminal is inevitably in the high level state. And the rest detection modules 3 on the upper computer 1 send state reading instructions, specifically, the detection modules 3 except the received wire harness detection instruction are pointed to send the state reading instructions, so that the other sheath metal terminal in the high-level state can be inquired and obtained. In the embodiment of the present invention, after receiving the wire harness detection instruction, the detection module 3 sets the corresponding metal probe at a high level, and can read the level state of each metal probe when receiving the state reading instruction, which can be implemented by using conventional technical means, and is specifically well known to those skilled in the art, and is not described herein again.
After N wire harness detection instructions are sent and attribute information of the N detection modules 3 and number information of corresponding metal probes in the N detection modules 3 are obtained, the upper computer 1 can count to obtain detection loop information, and the upper computer 1 compares the detection loop information obtained through counting with preset loop standard information to obtain the detection state of the wire harness.
In the embodiment of the invention, when one sheath metal terminal is set at a high level and the other sheath metal terminal is recorded and stored to be at the high level, the test of a loop is completed. The size of N corresponds to the number of loops of the wiring harness, and is well known to those skilled in the art. Generally, after sending N wire harness detection commands, the upper computer 1 can count N detection loop information. The attribute information of the detection module 3 generally refers to information such as the number of the detection module 3, and generally, the number of each metal probe in the detection module 3 is also numbered, so that the obtained N pieces of detection loop information include the number of the detection module 3, the number of each metal probe, and the like.
The preset loop standard information corresponds to the wire harness and the corresponding connection between the wire harness and the detection module 3, and the specific loop standard information is the same as the detection of the wire harness in the prior art, which is known to those skilled in the art. When the obtained detection information is consistent with the preset loop standard information, the upper computer 1 can judge that the wiring harness is assembled correctly, otherwise, the situation that the wiring harness is assembled incorrectly can be judged.
Further, after the detection module 3 places the metal probe in a high level state, the detection module 3 can send the feedback information that is placed high to the upper computer 1; after receiving the feedback information that has been set high, the upper computer 1 sends a state reading instruction to the remaining detection modules 3.
In the embodiment of the invention, after a detection module 3 receives a wire harness detection instruction, the detection module 3 places a metal probe at a high level according to the wire harness detection instruction, and then sends the feedback information of the placed high level to an upper computer 1, thereby forming a closed loop of information.
Further, the wireless connection between the upper computer 1 and the detection module 3 includes WIFI connection, Zigbee, lora or bluetooth.
In the embodiment of the invention, when the upper computer 1 and the detection module 3 are in wireless connection in a WIFI mode, the upper computer 1 and the detection module 3 need to be connected through the wireless gateway 2. The wireless gateway 2 is used as an access point of the wireless AP, and all the detection modules 3 can be connected with the upper computer 1 through the wireless gateway 2, so that a local area network can be formed. The specific matching among the detection module 3, the wireless gateway 2 and the upper computer 1 is consistent with the existing mode of connecting through WIFI, and is specifically known to those skilled in the art, and is not repeated here.
The upper computer 1 is responsible for sending all commands and logically judging the state of the wiring harness. The upper computer 1 sends commands to the plurality of detection modules 3 simultaneously, acquires data simultaneously, performs calculation analysis and display, and puts the calculation function of the lower computer to the upper computer 1 for processing, thereby reducing the work of hardware. The data of the existing project are stored in the database of the host computer 1, the defects of a file system do not exist, the integrity and the safety of all the data are guaranteed, a CAD document can be directly imported into a newly-built project in multi-party cooperative operation software, and the time for manufacturing the project can be saved. The software does not need to perform operations such as serial port configuration and the like with a lower computer, each detection module 3 can be stored, and incorrect module signals can be automatically identified and eliminated. The test time of the upper computer 1 for processing complex items is greatly shortened, and the test algorithm can be improved.
During normal detection, the upper computer 1 serves as a TCP server side, and all the detection modules 3 serve as client sides. When the system is powered on, all the detection modules 3 can search for the connection of the designated server in the local area network, and after the upper computer 1 is searched and connected, the detection modules are connected to the server, so that the communication channels of the detection modules 3 and the upper computer 1 are established, and conversation can be started.
Further, the detection module comprises a detection processor 4, the detection processor 4 is electrically connected with a wireless network module 5, a power management module 6, a memory 7, a JTAG interface 8, a debugging serial port 9 and a state indication module 10, and the detection processor 4 can be wirelessly connected with the upper computer 1 through the wireless network module 5.
In the embodiment of the present invention, the detection processor 4 may adopt a chip based on an ARM Cortex-M7 core, and the wireless network module 5 may adopt a Broadcom BCM43362 WIFI chip module, so that the number of most supporting harness loop access points of each detection module 3 is 128 points. The status indication module 10 may use an LED or an LCD for indicating the current module network status, the board working status, the lithium battery power status, the air tightness conducting status, the loop connection status, and other information. The memory 7 may be an eprom, and the memory 7 is used for storing some common information, such as: AP SSID, AP password, etc.
The power management module 6 is used for supplying power to the system, simultaneously manages charging and discharging of the accessed lithium battery, switches to direct-current power supply when accessing direct-current voltage, simultaneously charges the lithium battery, switches to lithium battery power supply when the system does not access direct current, stops working when the voltage of the lithium battery is insufficient and the direct current is not accessed, and simultaneously gives an alarm to prompt an operator to charge the module. Because WIFI chip and main control chip dominant frequency are higher, and the consumption is great, and lithium cell electric quantity consumes very fast, so the lithium cell interface only is used in some special occasions, normally produces the line and detects and not use the lithium cell, but adopts the mode of unified power supply. The debug serial port 9 and the JTAG module 8 are used for debugging. When the module encounters communication or other problems, error information can be sent to the serial port, and after a maintainer uses a computer to access the serial port interface, the problem can be quickly positioned according to the returned error information, so that the efficiency of module maintenance is improved.
To sum up, the wire harness wireless detection method is obtained, and comprises an upper computer 1 and a plurality of detection modules 3 which can be in adaptive connection with sheaths of the wire harnesses, wherein the sheaths of the wire harnesses can be inserted into the corresponding detection modules 3, and after the sheaths of the wire harnesses are inserted into the detection modules 3, sheath metal terminals in the sheaths can be electrically connected with corresponding metal probes in the detection modules 3 in a one-to-one correspondence manner;
the detection modules 3 can be wirelessly connected with the upper computer 1, and after all the detection modules 3 are wirelessly connected with the upper computer 1, the upper computer 1 can send a wire harness detection instruction to the specified detection modules 3; after a wire harness detection instruction is received, according to the wire harness detection instruction, the detection module 3 can place a corresponding metal probe in the detection module 3 and a sheath metal terminal connected with the metal probe in a high-level state;
after the wire harness detection instruction is sent, the upper computer 1 sends a state reading instruction to the rest of the detection modules 3, and after the state reading instruction is received, the detection modules 3 can send the level states of all the current metal probes in the detection modules 3 into the upper computer 1, so that the upper computer 1 records and stores the attribute information of the detection modules 3 with the metal probes in the high level state and the serial number information of the corresponding metal probes in the detection modules 3;
after N wire harness detection instructions are sent and attribute information of the N detection modules 3 and number information of corresponding metal probes in the N detection modules 3 are obtained, the upper computer 1 can count to obtain detection loop information, and the upper computer 1 compares the detection loop information obtained through counting with preset loop standard information to obtain the detection state of the wire harness.
In the embodiment of the present invention, the process of implementing the wire harness detection by specifically matching the upper computer 1 and the detection module 3 may refer to the above description, and details are not repeated here.
In conclusion, the detection module 3 is wirelessly connected with the upper computer 1, wires such as a lower computer and an adapter plate are not needed, the structure is simple, and the installation and maintenance are convenient. The flat cable and other connecting wires are removed, so that the production period is greatly shortened.
The product is a standardized product: the core component of the detection module 3 is a module mainboard, and industrial automatic production can be completely realized. The installation is convenient and fast by matching with different modules. The manufacturer can customize modules with different numbers according to different wiring harness types, and the modules can be combined randomly, so that the flexibility is greatly improved.
The upper computer 1 realizes the calculation function of the lower computer and simplifies the structure of the test system. The data of the existing project are stored in the database of the host computer 1, the defects of a file system do not exist, the integrity and the safety of all the data are guaranteed, and CAD documents can be directly imported into a newly-built project in multi-party cooperative operation software. The data of each detection module 3 connected with the upper computer 1 can be stored without operations such as serial port configuration and the like with the lower computer, and incorrect signals can be automatically identified and eliminated. The test time for processing complex items is greatly shortened, and the test algorithm can be improved.
The application scene is rich: because simple structure is light, wireless detection module 3 can be with being applied to multiple scene, not only can examine the platform like the tradition and assemble in fixed rack, can also be according to the production demand, directly imbed in the pencil production water line, realize the test in the production, have the assembly error to show in real time, great improvement production efficiency and production correct rate, every assembly line has saved two testers' cost of labor simultaneously. Meanwhile, the novel multifunctional pen can also be used as a portable product. The wire harness with questionable quality can be brought to a customer site for field test. These are advantages not available with conventional devices.
The cost is low: the detection system formed by the upper computer 1 and the detection module 3 can be conveniently set up, and a user does not need to customize an aluminum alloy rack for the test system due to light weight. The tool wood board, the tool support and even the temporary test can be tested on a common tool table. Therefore, the material cost, the transportation cost and the production cost of the wire harness detection equipment are greatly saved.
Claims (8)
1. A wire harness wireless detection system is characterized in that: the detection device comprises an upper computer (1) and a plurality of detection modules (3) which can be in adaptive connection with sheaths of wire harnesses, wherein the sheaths of the wire harnesses can be inserted into the corresponding detection modules (3), and after the sheaths of the wire harnesses are inserted into the detection modules (3), sheath metal terminals in the sheaths can be electrically connected with corresponding metal probes in the detection modules (3) in a one-to-one correspondence manner;
the detection modules (3) can be wirelessly connected with the upper computer (1), and after all the detection modules (3) are wirelessly connected with the upper computer (1), the upper computer (1) can send a wire harness detection instruction to the specified detection modules (3); after a wire harness detection instruction is received, according to the wire harness detection instruction, the detection module (3) can enable a corresponding metal probe in the detection module (3) and a sheath metal terminal connected with the metal probe to be in a high-level state;
after a wire harness detection instruction is sent, the upper computer (1) sends a state reading instruction to the rest of the detection modules (3), after the state reading instruction is received, the detection modules (3) can send the level states of all the current metal probes in the detection modules (3) to the upper computer (1), and the upper computer (1) records and stores the attribute information of the detection modules (3) with the metal probes in the high level state and the serial number information of the corresponding metal probes in the detection modules (3);
after N wiring harness detection instructions are sent and attribute information of N detection modules (3) and serial number information of corresponding metal probes in the N detection modules (3) are obtained, the upper computer (1) can count to obtain detection loop information, and the upper computer (1) compares the detection loop information obtained through counting with preset loop standard information to obtain the detection state of the wiring harness.
2. The wire harness wireless detection system according to claim 1, wherein: when the detection module (3) places the metal probe in a high level state, the detection module (3) can send the feedback information of the placed height to the upper computer (1); after the upper computer (1) receives the feedback information which is set high, the upper computer (1) sends a state reading instruction to the rest detection modules (3).
3. The wire harness wireless detection system according to claim 1, wherein: the wireless connection between the upper computer (1) and the detection module (3) comprises WIFI connection, Zigbee, lora or Bluetooth.
4. The wire harness wireless detection system according to claim 1, wherein: the detection module comprises a detection processor (4), the detection processor (4) is electrically connected with a wireless network module (5), a power management module (6), a memory (7), a JTAG interface (8), a debugging serial port (9) and a state indication module (10), and the detection processor (4) can be wirelessly connected with the upper computer (1) through the wireless network module (5).
5. A wire harness wireless detection method is characterized in that: the detection device comprises an upper computer (1) and a plurality of detection modules (3) which can be in adaptive connection with sheaths of wire harnesses, wherein the sheaths of the wire harnesses can be inserted into the corresponding detection modules (3), and after the sheaths of the wire harnesses are inserted into the detection modules (3), sheath metal terminals in the sheaths can be electrically connected with corresponding metal probes in the detection modules (3) in a one-to-one correspondence manner;
the detection modules (3) can be wirelessly connected with the upper computer (1), and after all the detection modules (3) are wirelessly connected with the upper computer (1), the upper computer (1) can send a wire harness detection instruction to the specified detection modules (3); after a wire harness detection instruction is received, according to the wire harness detection instruction, the detection module (3) can enable a corresponding metal probe in the detection module (3) and a sheath metal terminal connected with the metal probe to be in a high-level state;
after a wire harness detection instruction is sent, the upper computer (1) sends a state reading instruction to the rest of the detection modules (3), after the state reading instruction is received, the detection modules (3) can send the level states of all the current metal probes in the detection modules (3) to the upper computer (1), and the upper computer (1) records and stores the attribute information of the detection modules (3) with the metal probes in the high level state and the serial number information of the corresponding metal probes in the detection modules (3);
after N wiring harness detection instructions are sent and attribute information of N detection modules (3) and serial number information of corresponding metal probes in the N detection modules (3) are obtained, the upper computer (1) can count to obtain detection loop information, and the upper computer (1) compares the detection loop information obtained through counting with preset loop standard information to obtain the detection state of the wiring harness.
6. The wire harness wireless detection method according to claim 5, wherein: when the detection module (3) places the metal probe in a high level state, the detection module (3) can send the feedback information of the placed height to the upper computer (1); after the upper computer (1) receives the feedback information which is set high, the upper computer (1) sends a state reading instruction to the rest detection modules (3).
7. The wire harness wireless detection method according to claim 5, wherein: the wireless connection between the upper computer (1) and the detection module (3) comprises WIFI connection, Zigbee, lora or Bluetooth.
8. The wire harness wireless detection method according to claim 5, wherein: the detection module comprises a detection processor (4), the detection processor (4) is electrically connected with a wireless network module (5), a power management module (6), a memory (7), a JTAG interface (8), a debugging serial port (9) and a state indication module (10), and the detection processor (4) can be wirelessly connected with the upper computer (1) through the wireless network module (5).
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