CN112526398A - Detection system and method for performance of traditional central electric distribution box - Google Patents
Detection system and method for performance of traditional central electric distribution box Download PDFInfo
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- CN112526398A CN112526398A CN202011221427.6A CN202011221427A CN112526398A CN 112526398 A CN112526398 A CN 112526398A CN 202011221427 A CN202011221427 A CN 202011221427A CN 112526398 A CN112526398 A CN 112526398A
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- 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
- G01R31/56—Testing of electric apparatus
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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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Abstract
The invention discloses a detection system and a detection method for the performance of a traditional central electric distribution box, wherein the detection system comprises a PC (personal computer), a detection circuit board and a detected electric box; the built-in test system of the PC sends a command to the detection circuit board; the detection circuit board executes corresponding actions and feeds back detection results to the PC; the detection circuit board comprises a central processing unit, a high-level output circuit, a low-level output circuit, a load input loop and a communication loop; the high-level output circuit, the low-level output circuit, the load input loop and the communication loop are all connected with the central processing unit; the detected electric appliance box is connected with the detection circuit board through a wire harness. The invention can not only detect the electrical box, but also control the production flow of the electrical box.
Description
Technical Field
The invention relates to the field of electrical equipment detection, in particular to a system and a method for detecting the performance of a traditional central electrical distribution box.
Background
The traditional central electric distribution box mainly refers to a product comprising components such as a PCB (printed circuit board), a relay, a fuse, a current-limiting resistor, a diode and the like, and structural components such as a shell, and the like. When testing the performance, most of them adopt sampling inspection mode to complete the loop control and observe the output by manual or automatic local mode. And determining that elements such as relays, fuses and the like in the loop work normally. Although this test method can complete the function test of the electrical box, its efficiency is low, and it cannot complete the functions of storing and inquiring the circuit test result. For example, the detection method mentioned in "central electrical distribution box simulation load detection method" by Yan Xinming et al can simulate the vehicle load by using the resistance, and can perform load distribution, and complete the electrical box performance detection by combining the factors such as the working temperature, and the like, and the method can not realize 100% detection of the product except the aforementioned defects. As another example, the detection method mentioned in CN 101308192A by Biddi corporation, though it solves the design defect of Yan Xinming et al more completely, but has the following problems: the invention can only detect the on-off of the circuit, and has no way to detect the hidden troubles in the circuit, such as insufficient copper foil thickness, insufficient solder joint and the like. The invention can only detect the open circuit condition of the loop, but has no way to detect the short circuit condition. The detection device has limited storage capacity, needs to be queried locally, and is not convenient enough. It is not compatible with the same series of products.
Prior art application No. 201711360886.0, with patent names: a wire harness detection device and a detection method thereof are disclosed, which realize online detection of an automobile wire harness by utilizing a computer technology, a virtual instrument technology, a microelectronic technology and a database technology in an automobile wire harness computer detection system, and the detection system judges faults of short circuit, open circuit, wrong wiring, poor contact and the like of the wire harness by measuring the impedance of the automobile wire harness. However, the present application is directed to a measurement object that is a wire harness, not a central electrical distribution box, and the detection circuit has no control loop. Therefore, the central electrical distribution box cannot be directly tested.
Disclosure of Invention
1. The technical problem to be solved is as follows:
in view of the above technical problems, the present invention provides a system and a method for detecting the performance of a traditional central electrical distribution box,
2. the technical scheme is as follows:
a detection system for traditional central electric distribution box performance is characterized in that: comprises a PC, a detection circuit board and a detected electric appliance box.
The PC is internally provided with a test system; the PC test system sends a command to the detection circuit board through the communication bus; after receiving the command, the detection circuit board executes corresponding action and feeds back the detection result to the PC through the communication bus; wherein the commands include: the high-level output circuit is switched on or off, the low-level output circuit is switched on or off, and the voltage drop of a specified load loop is detected; when the central electric distribution box of one model is detected for the first time, the PC receives the detection data, stores the detection data X, and takes the detection data X after floating for a certain preset range Y, namely X +/-Y, as the test standard of the central electric distribution box of the model.
The detection circuit board comprises a central processing unit, a high-level output circuit, a low-level output circuit, a load input loop and a communication loop; the high-level output circuit, the low-level output circuit, the load input loop and the communication loop are all connected with the central processing unit; the central processing unit receives a high-level output instruction, a low-level output instruction, a load output instruction and a circuit board refreshing instruction issued by the test system through the communication loop and transmits the corresponding instructions to the corresponding circuits; the high-level output circuit provides a high-level power supply signal of a voltage value issued by a test system to the tested electric appliance box; the low-level output circuit provides a grounding signal for the detected electric appliance box; the load input loop provides the tested electrical appliance box with a load which is issued by the test system and has the same power and resistance value as the simulated vehicle-mounted electrical appliance; the communication loop transmits the information of the central processing unit to the PC.
The detected electric appliance box is connected with the detection circuit board through a wire harness.
Furthermore, the PC test system comprises a template analysis unit, a template information sending test command unit, a bottom layer feedback data analysis unit, a test result judgment and reminding unit and a remote data query and export unit.
The template analysis unit can complete the configuration of the circuit structure of the product in different types by a template configuration mode aiming at the products in different types, complete the analysis and generation of the test command and be applied to the production test process; the configuration of the circuit structure includes configuring a high level output voltage value, a load resistance value and power of the circuit.
The template information sending test command unit can sequentially send corresponding commands according to a command list configured and analyzed by a template, and the sent commands comprise high level output, low level output, load input interface opening and circuit switch state refreshing.
The bottom layer feedback data analysis unit can perform corresponding analysis on information fed back by the detection circuit board.
The test result judging and reminding unit can compare the data analyzed by the data analyzing unit with a test standard data range preset by a system, judge the abnormality if the data are not in the range, and send a warning to a user; when the item missing check is carried out, if no effective output is found, the item missing abnormity is judged, and a warning is given; when the circuit breaking check is performed, if the effective output is found, the abnormality is determined and a warning is given.
The remote data query and export unit can query and export the test data of a batch or a single product through the Ethernet.
Furthermore, the PC test system also comprises a production process management unit for managing the production process of the tested electric appliance box, and specifically comprises a production flow control unit, a production process data recording unit, a production process data query unit and a production record export unit.
Further, the PC test system also comprises an authority management unit; the authority management unit can allocate different authorities for users of different posts and open corresponding functions.
A detection method for the performance of a traditional central electric distribution box is characterized by comprising the following steps: the method comprises the following steps:
and S1, manufacturing a special wire harness adapted to the product according to the circuit connection relation and the port requirement relation of the detected electric appliance box.
And S2, according to the wiring harness relation table, the template analysis unit of the PC test system makes an electronic template adaptive to the product, and the template is configured into the test system through the special interface of the PC test software.
S3, selecting a standard central electrical box circuit board which is tested and confirmed to have the same model as the tested electrical box, and connecting the wire harness manufactured in the S1 with the detection circuit board and the tested electrical box; the PC test software sends a command to the detection circuit board through the communication bus, and the detection circuit board executes corresponding action after receiving the command; the command comprises opening or closing the high-level output circuit, opening or closing the low-level output circuit, and detecting the voltage drop of a specified load loop; the detection circuit board feeds back the detection result to the PC through the communication bus; and after receiving the detection data, the PC stores the detection data X, and takes the detection data X after floating within a certain preset range Y, namely X +/-Y, as the test standard of the central electric distribution box of the type.
S4, when producing the electric box with the same type as the detected electric box in batch, connecting the wire harness made in S1 with the detection circuit board and the detected electric box; the PC test software sends a command to the detection circuit board through the communication bus, the detection circuit board executes corresponding action after receiving the command, and feeds back a detection result to the PC through the communication bus, then the PC compares the analyzed result with the preset test standard in S3, if the analyzed result is in a preset range, the PC passes the judgment, and if the analyzed result is not in the preset range, the PC fails the judgment.
S5: meanwhile, the tested electrical box is subjected to item missing inspection and short circuit inspection; when the item missing inspection is carried out, if the item missing occurs in the detected loop, the open circuit alarm is prompted; and judging that the short circuit is unqualified and outputting a short circuit alarm if the detected electrical box has no output during short circuit detection.
3. Has the advantages that:
(1) the invention adopts the template analysis unit to realize the detection of a plurality of central electrical boxes of the same type through one-time template configuration, and can detect fault points and whether short circuits exist in the loop of the central electrical distribution box.
(2) The detection system and the detection method provided by the invention have high detection efficiency, and only about 1 minute is needed for detecting one product; the detection result is presented in real time, and the follow-up query can be realized; when the abnormity is detected, the operator can be explicitly reminded, possible fault points are provided, and the debugging time is reduced; the data is interacted with the PC through the bus, and remote access can be realized through the network.
(3) The invention can not only detect the electric box, but also control the production flow of the electric box, efficiently manage the detection and the production, and inquire and export the production test result and the fault record at any time; can track single unit and batch, the effectual production efficiency that has improved.
Drawings
FIG. 1 is a block diagram of a conventional central electrical distribution box performance oriented test system;
FIG. 2 is a schematic structural diagram of a detection circuit board according to the present invention;
FIG. 3 is a schematic diagram of a PC according to the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, a system for detecting performance of a conventional central electrical distribution box is characterized in that: comprises a PC, a detection circuit board and a detected electric appliance box.
The PC is internally provided with a test system; the PC test system sends a command to the detection circuit board through the communication bus; after receiving the command, the detection circuit board executes corresponding action and feeds back the detection result to the PC through the communication bus; wherein the commands include: the high-level output circuit is switched on or off, the low-level output circuit is switched on or off, and the voltage drop of a specified load loop is detected; when the central electric distribution box of one model is detected for the first time, the PC receives the detection data, stores the detection data X, and takes the detection data X after floating for a certain preset range Y, namely X +/-Y, as the test standard of the central electric distribution box of the model.
The detection circuit board comprises a central processing unit, a high-level output circuit, a low-level output circuit, a load input loop and a communication loop; the high-level output circuit, the low-level output circuit, the load input loop and the communication loop are all connected with the central processing unit; the central processing unit receives a high-level output instruction, a low-level output instruction, a load output instruction and a circuit board refreshing instruction issued by the test system through the communication loop and transmits the corresponding instructions to the corresponding circuits; the high-level output circuit provides a high-level power supply signal of a voltage value issued by a test system to the tested electric appliance box; the low-level output circuit provides a grounding signal for the detected electric appliance box; the load input loop provides the tested electrical appliance box with a load which is issued by the test system and has the same power and resistance value as the simulated vehicle-mounted electrical appliance; the communication loop transmits the information of the central processing unit to the PC.
The detected electric appliance box is connected with the detection circuit board through a wire harness.
Furthermore, the PC test system comprises a template analysis unit, a template information sending test command unit, a bottom layer feedback data analysis unit, a test result judgment and reminding unit and a remote data query and export unit.
The template analysis unit can complete the configuration of the circuit structure of the product in different types by a template configuration mode aiming at the products in different types, complete the analysis and generation of the test command and be applied to the production test process; the configuration of the circuit structure includes configuring a high level output voltage value, a load resistance value and power of the circuit.
The template information sending test command unit can sequentially send corresponding commands according to a command list configured and analyzed by a template, and the sent commands comprise high level output, low level output, load input interface opening and circuit switch state refreshing.
The bottom layer feedback data analysis unit can perform corresponding analysis on information fed back by the detection circuit board.
The test result judging and reminding unit can compare the data analyzed by the data analyzing unit with a test standard data range preset by a system, judge the abnormality if the data are not in the range, and send a warning to a user; when the item missing check is carried out, if no effective output is found, the item missing abnormity is judged, and a warning is given; when the circuit breaking check is performed, if the effective output is found, the abnormality is determined and a warning is given.
The remote data query and export unit can query and export the test data of a batch or a single product through the Ethernet.
Furthermore, the PC test system also comprises a production process management unit for managing the production process of the tested electric appliance box, and specifically comprises a production flow control unit, a production process data recording unit, a production process data query unit and a production record export unit.
Further, the PC test system also comprises an authority management unit; the authority management unit can allocate different authorities for users of different posts and open corresponding functions.
A detection method for the performance of a traditional central electric distribution box is characterized by comprising the following steps: the method comprises the following steps:
and S1, manufacturing a special wire harness adapted to the product according to the circuit connection relation and the port requirement relation of the detected electric appliance box.
And S2, according to the wiring harness relation table, the template analysis unit of the PC test system makes an electronic template adaptive to the product, and the template is configured into the test system through the special interface of the PC test software.
S3, selecting a standard central electrical box circuit board which is tested and confirmed to have the same model as the tested electrical box, and connecting the wire harness manufactured in the S1 with the detection circuit board and the tested electrical box; the PC test software sends a command to the detection circuit board through the communication bus, and the detection circuit board executes corresponding action after receiving the command; the command comprises opening or closing the high-level output circuit, opening or closing the low-level output circuit, and detecting the voltage drop of a specified load loop; the detection circuit board feeds back the detection result to the PC through the communication bus; and after receiving the detection data, the PC stores the detection data X, and takes the detection data X after floating within a certain preset range Y, namely X +/-Y, as the test standard of the central electric distribution box of the type.
S4, when producing the electric box with the same type as the detected electric box in batch, connecting the wire harness made in S1 with the detection circuit board and the detected electric box; the PC test software sends a command to the detection circuit board through the communication bus, the detection circuit board executes corresponding action after receiving the command, and feeds back a detection result to the PC through the communication bus, then the PC compares the analyzed result with the preset test standard in S3, if the analyzed result is in a preset range, the PC passes the judgment, and if the analyzed result is not in the preset range, the PC fails the judgment.
S5: meanwhile, the tested electrical box is subjected to item missing inspection and short circuit inspection; when the item missing inspection is carried out, if the item missing occurs in the detected loop, the open circuit alarm is prompted; and judging that the short circuit is unqualified and outputting a short circuit alarm if the detected electrical box has no output during short circuit detection.
The system and the method for detecting the performance of the traditional central electrical distribution box can detect hidden fault points in loops, can detect short circuits among the loops, comprise production flow control and process data recording management, and can realize remote inquiry and export of production process data.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. A detection system for traditional central electric distribution box performance is characterized in that: comprises a PC, a detection circuit board and a detected electric appliance box;
the PC is internally provided with a test system; the PC test system sends a command to the detection circuit board through the communication bus; after receiving the command, the detection circuit board executes corresponding action and feeds back the detection result to the PC through the communication bus; wherein the commands include: the high-level output circuit is switched on or off, the low-level output circuit is switched on or off, and the voltage drop of a specified load loop is detected; when the central electric distribution box of one model is detected for the first time, the PC receives the detection data, stores the detection data X, and takes the detection data X after floating for a certain preset range Y, namely X +/-Y, as the test standard of the central electric distribution box of the model;
the detection circuit board comprises a central processing unit, a high-level output circuit, a low-level output circuit, a load input loop and a communication loop; the high-level output circuit, the low-level output circuit, the load input loop and the communication loop are all connected with the central processing unit; the central processing unit receives a high-level output instruction, a low-level output instruction, a load output instruction and a circuit board refreshing instruction issued by the test system through the communication loop and transmits the corresponding instructions to the corresponding circuits; the high-level output circuit provides a high-level power supply signal of a voltage value issued by a test system to the tested electric appliance box; the low-level output circuit provides a grounding signal for the detected electric appliance box; the load input loop provides the tested electrical appliance box with a load which is issued by the test system and has the same power and resistance value as the simulated vehicle-mounted electrical appliance; the communication loop transmits the information of the central processing unit to the PC;
the detected electric appliance box is connected with the detection circuit board through a wire harness.
2. A performance testing system for a conventional central electrical distribution box according to claim 1, wherein: the PC test system comprises a template analysis unit, a template information sending test command unit, a bottom layer feedback data analysis unit, a test result judgment and reminding unit and a remote data query and export unit;
the template analysis unit can complete the configuration of the circuit structure of the product in different types by a template configuration mode aiming at the products in different types, complete the analysis and generation of the test command and be applied to the production test process; the configuration of the circuit structure comprises a high-level output voltage value, a load resistor resistance value and power for configuring the circuit;
the template information sending test command unit can sequentially send corresponding commands according to a command list configured and analyzed by a template, and the sent commands comprise high level output, low level output, load input interface opening and circuit switch state refreshing;
the bottom feedback data analysis unit can perform corresponding analysis on information fed back by the detection circuit board;
the test result judging and reminding unit can compare the data analyzed by the data analyzing unit with a test standard data range preset by a system, judge the abnormality if the data are not in the range, and send a warning to a user; when the item missing check is carried out, if no effective output is found, the item missing abnormity is judged, and a warning is given; when the circuit breaking inspection is carried out, if effective output is found, the abnormity is judged, and an alarm is sent out;
the remote data query and export unit can query and export the test data of a batch or a single product through the Ethernet.
3. A performance testing system for a conventional central electrical distribution box according to claim 2, wherein: the PC test system also comprises a production process management unit for managing the production process of the tested electric appliance box, and specifically comprises a production flow control unit, a production process data recording unit, a production process data query unit and a production record export unit.
4. A performance testing system for a conventional central electrical distribution box according to claim 2, wherein: the PC test system also comprises an authority management unit; the authority management unit can allocate different authorities for users of different posts and open corresponding functions.
5. A method for testing performance of a conventional central electrical distribution box, which is a method for testing performance of a conventional central electrical distribution box according to any one of claims 1 to 4; the method is characterized in that: the method comprises the following steps:
s1, manufacturing a special wire harness adapted to the product according to the circuit connection relation and the port requirement relation of the detected electric appliance box;
s2, according to the wire harness relation table, the template analysis unit of the PC test system makes the electronic template adapted to the product, and configures the template into the test system through the special interface of the PC test software;
s3, selecting a standard central electrical box circuit board which is tested and confirmed to have the same model as the tested electrical box, and connecting the wire harness manufactured in the S1 with the detection circuit board and the tested electrical box; the PC test software sends a command to the detection circuit board through the communication bus, and the detection circuit board executes corresponding action after receiving the command; the command comprises opening or closing the high-level output circuit, opening or closing the low-level output circuit, and detecting the voltage drop of a specified load loop; the detection circuit board feeds back the detection result to the PC through the communication bus; after receiving the detection data, the PC stores the detection data X, and takes the detection data X after floating a certain preset range Y, namely X +/-Y, as the test standard of the central electric distribution box of the type;
s4, when producing the electric box with the same type as the detected electric box in batch, connecting the wire harness made in S1 with the detection circuit board and the detected electric box; the PC test software sends a command to the detection circuit board through the communication bus, the detection circuit board executes corresponding action after receiving the command, and feeds back a detection result to the PC through the communication bus, then the PC compares the analyzed result with the preset test standard in S3, if the analyzed result is in a preset range, the PC passes the judgment, and if the analyzed result is not in the preset range, the PC fails the judgment;
s5: meanwhile, the tested electrical box is subjected to item missing inspection and short circuit inspection; when the item missing inspection is carried out, if the item missing occurs in the detected loop, the open circuit alarm is prompted; and judging that the short circuit is unqualified and outputting a short circuit alarm if the detected electrical box has no output during short circuit detection.
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