CN114236352A - Full-automatic detection system of vehicle-mounted terminal module printed board - Google Patents
Full-automatic detection system of vehicle-mounted terminal module printed board Download PDFInfo
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- CN114236352A CN114236352A CN202111517854.3A CN202111517854A CN114236352A CN 114236352 A CN114236352 A CN 114236352A CN 202111517854 A CN202111517854 A CN 202111517854A CN 114236352 A CN114236352 A CN 114236352A
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- printed board
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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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
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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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
- G01R31/2808—Holding, conveying or contacting devices, e.g. test adapters, edge connectors, extender boards
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electronic Circuits (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a full-automatic detection system of a vehicle-mounted terminal module printed board, which belongs to the field of circuit board detection and aims to solve the problems of long detection time, easiness in missing detection and misjudgment and low detection efficiency due to the adoption of a manual detection mode in the conventional detection of the vehicle-mounted terminal module printed board. According to the test system, the probe is controlled to be in compression joint with the printed board through the electric control module, the lower computer main control module sends a preparation instruction to the upper computer, the upper computer starts to detect voltage and current, and whether the voltage and the current are normal or not is detected, so that the whole test work is detected. It is used for detecting the printed board.
Description
Technical Field
The invention relates to printed board detection, and relates to the field of circuit board detection.
Background
The printed board of the vehicle-mounted terminal module used at present is tested by adopting a pure manual detection mode, namely, a power supply communication adapter board is connected well and placed on a probe clamp, a wrench is pulled down to enable the printed board test point to be in compression joint with a probe, and a universal meter is used for measuring the voltage of a spring column leading out a probe to a front panel. The total 17 voltage test signals are used for completing ground short circuit test, voltage test before copying, voltage test after copying, current test before copying and after copying, and copying to other stations. The whole process of each test point tester needs to be tested for 3 times, the detection time is long, conditions such as missing detection and misjudgment are easy to occur, and the detection efficiency is low.
Disclosure of Invention
The invention aims to solve the problems of long detection time, easiness in missing detection and misjudgment and low detection efficiency due to the fact that an existing manual detection mode is adopted for detecting a vehicle-mounted terminal module printed board, and provides a full-automatic detection system for the vehicle-mounted terminal module printed board.
The full-automatic detection system of the vehicle-mounted terminal module printed board comprises a starting key, a short circuit detection key, a detection key before copying, a copying key, a detection key after copying, a crimping clamp, an execution mechanism, an electric control module, an execution mechanism, a position switch, a lower computer main control module, a collection module, an upper computer, a power supply module and a copying module;
the starting key is used for sending a starting command to the electric control module;
the short circuit detection key is used for sending a test point-to-ground short circuit detection signal to the lower computer main control module;
the pre-copying detection key is used for sending a working voltage detection signal to the lower computer main control module;
the copy key is used for sending a download program signal to the lower computer main control module;
the after-copying detection key is used for sending a after-copying detection signal to the lower computer main control module;
the electronic control module is used for controlling the execution mechanism to drive the crimping clamp to press down after receiving the starting command, so that the probes on the crimping clamp are crimped with the printed board;
the position switch is used for sending a feedback signal to the lower computer main control module when the probe touches the position switch in the process of crimping the printed board;
the lower computer main control module is used for sending a ready instruction to the upper computer after receiving the feedback signal;
the test board is also used for receiving the test point-to-ground short circuit detection signal, adding a +5V test voltage signal to each test point when the printed board is not powered, and sending a first acquisition command to the acquisition module; the system is also used for reading the voltage state data of each test point from the acquisition module and sending the ID number of the voltage state data of each test point to the upper computer;
the power supply module is also used for disconnecting the +5V test voltage signal from each test point after receiving the working voltage detection signal, controlling the power supply module to supply power to the printed board and sending a second acquisition command to the acquisition module; the system is also used for reading the voltage state data of each test point before copying and the ID number of the voltage state data of each test point from the acquisition module and sending the data to the upper computer;
the power supply module is also used for cutting off power supply to the printed board after receiving a download program signal, controlling the power supply module to electrify the printed board after the interface of the copy module is switched on, downloading the program into the printed board through the interface of the copy module at the moment, and sending a download program result to the upper computer;
the power supply module is also used for cutting off the power supply for the printed board after receiving the detection signal after the copying, controlling the power supply module to electrify the printed board after cutting off the connection between the copying module and the printed board, and sending a third acquisition command to the acquisition module; the system is also used for reading the voltage state data of each test point after the copying and the ID number of the voltage state data of each test point from the acquisition module and sending the data to the upper computer;
the acquisition module is used for acquiring the voltage state data of each test point after the probe is in compression joint with the printed board after receiving the first acquisition command, and sending the voltage state data of each test point and the ID number of the voltage state data of each test point to the master control module of the lower computer;
the system is also used for collecting the voltage and the current working current of each test point after the probe is in compression joint with the printed board after receiving a second collecting command, and sending the voltage and the current working current of each test point, the ID number of the voltage and the ID number of the current working current of each test point to a master control module of the lower computer;
the system is also used for collecting the voltage and the current working current of each test point after the probe is in compression joint with the printed board after receiving the third collecting command, and sending the voltage and the current working current of each test point, the ID number of the voltage and the ID number of the current working current of each test point to the master control module of the lower computer;
the upper computer is used for waiting for receiving data after receiving the ready instruction, and analyzing whether the corresponding test point voltage state data has a ground short circuit condition or not after receiving the ID number of each test point voltage state data;
after the ID number of the voltage of each test point before the copy and the ID number of the current working current are received, analyzing whether the corresponding test point voltage or the current working current is qualified or not;
when a downloading program result is received, displaying a result of successful programming or failed programming;
and after the ID number of each test point voltage and the ID number of the current working current after the received copy stroke, analyzing whether the corresponding test point voltage or the current working current is qualified or not.
Preferably, the system further comprises a stop button,
the stop key is used for sending a stop signal to the electric control module;
and the electronic control module is also used for controlling the actuating mechanism to drive the crimping clamp to lift up after receiving the stop signal, so that the probe on the crimping clamp is loosened from the printed board.
The invention has the beneficial effects that:
the system is simple in operation, inspectors only need to operate the starting key, the short circuit detection key, the detection key before copying, the copying key, the detection key after copying and the stop key on the panel according to the requirements of the operation instruction book, an inspection process is carried out when one key is pressed, the inspection process is completely uploaded and judged by background hardware and computer software, and the inspection result is directly displayed. For the one-way unqualified items in each item, the computer screen can be touched to perform one-time recheck confirmation. If the displayed detection result is qualified, the next detection key can be pressed to perform the next detection according to the detection sequence on the operation instruction book.
In addition, the crimping clamp is used for fixing and detecting the printed board, and the electric control module controls the actuating mechanism to accurately and reliably crimp the printed board; the lower computer main control module, the acquisition module and the power supply module are used for acquiring and uploading detection data defined by the detection path number, and the programming module is used for programming a printed board program. Therefore, the system relies on a semi-automatic operation full-automatic detection vehicle-mounted terminal module printed board, compared with the prior art, the detection speed is high, the false judgment is not easy to miss detection, and the detection efficiency is high.
Detailed Description
The first embodiment is as follows: the system for semi-automatically operating and fully-automatically detecting the printed board of the vehicle-mounted terminal module comprises a starting key, a short circuit detection key, a detection key before copying, a copying key, a detection key after copying, a crimping clamp, an execution mechanism, an electric control module, an execution mechanism, a position switch, a lower computer main control module, a collection module, an upper computer, a power supply module and a copying module;
the starting key is used for sending a starting command to the electric control module;
the short circuit detection key is used for sending a test point-to-ground short circuit detection signal to the lower computer main control module;
the pre-copying detection key is used for sending a working voltage detection signal to the lower computer main control module;
the copy key is used for sending a download program signal to the lower computer main control module;
the after-copying detection key is used for sending a after-copying detection signal to the lower computer main control module;
the electronic control module is used for controlling the execution mechanism to drive the crimping clamp to press down after receiving the starting command, so that the probes on the crimping clamp are crimped with the printed board;
the position switch is used for sending a feedback signal to the lower computer main control module when the probe touches the position switch in the process of crimping the printed board;
the lower computer main control module is used for sending a ready instruction to the upper computer after receiving the feedback signal;
the test board is also used for receiving the test point-to-ground short circuit detection signal, adding a +5V test voltage signal to each test point when the printed board is not powered, and sending a first acquisition command to the acquisition module; the system is also used for reading the voltage state data of each test point from the acquisition module and sending the ID number of the voltage state data of each test point to the upper computer;
the power supply module is also used for disconnecting the +5V test voltage signal from each test point after receiving the working voltage detection signal, controlling the power supply module to supply power to the printed board and sending a second acquisition command to the acquisition module; the system is also used for reading the voltage state data of each test point before copying and the ID number of the voltage state data of each test point from the acquisition module and sending the data to the upper computer;
the power supply module is also used for cutting off power supply to the printed board after receiving a download program signal, controlling the power supply module to electrify the printed board after the interface of the copy module is switched on, downloading the program into the printed board through the interface of the copy module at the moment, and sending a download program result to the upper computer;
the power supply module is also used for cutting off the power supply for the printed board after receiving the detection signal after the copying, controlling the power supply module to electrify the printed board after cutting off the connection between the copying module and the printed board, and sending a third acquisition command to the acquisition module; the system is also used for reading the voltage state data of each test point after the copying and the ID number of the voltage state data of each test point from the acquisition module and sending the data to the upper computer;
the acquisition module is used for acquiring the voltage state data of each test point after the probe is in compression joint with the printed board after receiving the first acquisition command, and sending the voltage state data of each test point and the ID number of the voltage state data of each test point to the master control module of the lower computer;
the system is also used for collecting the voltage and the current working current of each test point after the probe is in compression joint with the printed board after receiving a second collecting command, and sending the voltage and the current working current of each test point, the ID number of the voltage and the ID number of the current working current of each test point to a master control module of the lower computer;
the system is also used for collecting the voltage and the current working current of each test point after the probe is in compression joint with the printed board after receiving the third collecting command, and sending the voltage and the current working current of each test point, the ID number of the voltage and the ID number of the current working current of each test point to the master control module of the lower computer;
the upper computer is used for waiting for receiving data after receiving the ready instruction, and analyzing whether the corresponding test point voltage state data has a ground short circuit condition or not after receiving the ID number of each test point voltage state data;
after the ID number of the voltage of each test point before the copy and the ID number of the current working current are received, analyzing whether the corresponding test point voltage or the current working current is qualified or not;
when a downloading program result is received, displaying a result of successful programming or failed programming;
and after the ID number of each test point voltage and the ID number of the current working current after the received copy stroke, analyzing whether the corresponding test point voltage or the current working current is qualified or not.
In this embodiment, the normal detection process is: pressing a start key, a short circuit detection key, a before-run detection key, an off-run key, an after-run detection key and a stop key; and displaying the detection result through the upper computer, proving that the item is detected or has a problem, if the item has the problem, detecting again, and if the detection result is qualified, pressing the next detection key to perform the next detection.
The working principle of this application does:
the inspection personnel place the detection printed board, press the start button, and the control module controls the actuating mechanism to press down, so that the printed board is reliably connected with the probe; when the travel is in place, the position switch feeds back a signal to the main control module, the main control module sends a ready instruction to the upper computer, the upper computer software starts to perform round-trip (prepare to receive data), and the current detection item is judged according to the ID of the data transmitted by the acquisition module;
pressing a short circuit detection key, under the condition that the printed board is not powered, adding a +5V test voltage signal to each test point by a main control module, monitoring the voltage state data of each test point, packaging and uploading the data to an upper computer, analyzing the data by the upper computer according to the uploaded data ID, monitoring the test point with a ground short circuit to be a low level, and displaying a detection result on a short circuit detection window;
pressing a detection key before copying, controlling a main control module to disconnect a voltage signal applied by short-circuit detection, controlling a channel of an acquisition module to be communicated and controlling a power supply module to supply power to a printed board, acquiring the voltage and the current working current of each test point by the acquisition module, packaging the acquired voltage and current signal data by the main control module, uploading the data to an upper computer in real time at a time interval of 1S, analyzing and judging the data by the upper computer according to an uploading data ID (identity), judging 5 packets of data at most, displaying the qualified window as PASS (PASS service class), and marking the unqualified items as red;
pressing down a programming key, controlling a power supply module to disconnect a power supply of a printed board by a main control module, controlling to cut off a path of an acquisition module, controlling to connect a programming interface, controlling to electrify a power supply module again, starting to download a program, displaying OK after programming is successful, and displaying Error in failure;
pressing down a detection key after copying, controlling a power supply module to disconnect a power supply of a printed board by a main control module, cutting off a copying interface, controlling and communicating a channel of an acquisition module, controlling the power supply module to be electrified again, acquiring voltage and current working current of each test point by the acquisition module, packaging the acquired voltage and current signal data by the main control module, uploading the data to an upper computer in real time at a time interval of 1S, analyzing and judging the data by the upper computer according to an uploading data ID (identity), judging 5 packets of data at most, displaying the qualified window as PASS, unqualified NG and marking the unqualified items red;
and when all three types of detection are finished, the electric control module can control the actuating mechanism to directly release the printed board on the clamp by pressing the stop key.
The key operation steps of the application are as follows:
1. placing the printed board on a crimping fixture, and pressing down a start detection key;
2. pressing a short circuit detection key to start the detection of the point-to-ground short circuit, carrying out next detection if no problem exists, and pressing a stop detection key if a problem exists;
3. pressing a detection key before the run, starting to detect the voltage and the current working current of each test point, carrying out next detection if no problem exists, and pressing a stop detection key if a problem exists after rechecking if the problem exists;
4. pressing a programming key to start programming the printed board, performing next detection on the printed board without problems, and pressing a stop detection key when problems still exist after rechecking after retrying;
5. pressing down a detection key after the run, starting to detect the voltage and the current working current of each test point, pressing a stop detection key if no problem exists, and pressing the stop detection key if a problem exists after recheck;
and (5) after the detection is finished, taking down the detection printed board.
The second embodiment is as follows: the present embodiment is further limited to the system for semi-automatically and fully automatically detecting a printed board of a vehicle-mounted terminal module according to the first embodiment, in which the system further includes a stop button,
the stop key is used for sending a stop signal to the electric control module;
and the electronic control module is also used for controlling the actuating mechanism to drive the crimping clamp to lift up after receiving the stop signal, so that the probe on the crimping clamp is loosened from the printed board.
The third concrete implementation mode: in the embodiment, the system for semi-automatically operating and fully automatically detecting the printed board of the vehicle-mounted terminal module is further limited, in the embodiment, the lower computer main control module reads the voltage state data of each test point and the ID number of the voltage state data of each test point after the copying from the acquisition module and sends the data to the upper computer, the voltage state data of each test point are sent one by one, and the sending time interval of the voltage state data of 2 adjacent test points is 1 s.
The fourth concrete implementation mode: in this embodiment, the system for semi-automatically and fully automatically detecting the printed board of the vehicle-mounted terminal module according to the first embodiment is further limited, in which the test point voltage state data is short-circuited to ground at a low level, and the test point voltage state data is not short-circuited to ground at a high level.
The fifth concrete implementation mode: in the embodiment, the system for semi-automatically and fully automatically detecting the printed board of the vehicle-mounted terminal module is further limited, and in the embodiment, the upper computer is also used for displaying red color on unqualified test point data.
Claims (5)
1. The full-automatic detection system for the printed board of the vehicle-mounted terminal module is characterized by comprising a starting key, a short circuit detection key, a pre-copying detection key, a copying key, a post-copying detection key, a crimping clamp, an execution mechanism, an electric control module, an execution mechanism, a position switch, a lower computer main control module, an acquisition module, an upper computer, a power supply module and a copying module;
the starting key is used for sending a starting command to the electric control module;
the short circuit detection key is used for sending a test point-to-ground short circuit detection signal to the lower computer main control module;
the pre-copying detection key is used for sending a working voltage detection signal to the lower computer main control module;
the copy key is used for sending a download program signal to the lower computer main control module;
the after-copying detection key is used for sending a after-copying detection signal to the lower computer main control module;
the electronic control module is used for controlling the execution mechanism to drive the crimping clamp to press down after receiving the starting command, so that the probes on the crimping clamp are crimped with the printed board;
the position switch is used for sending a feedback signal to the lower computer main control module when the probe touches the position switch in the process of crimping the printed board;
the lower computer main control module is used for sending a ready instruction to the upper computer after receiving the feedback signal;
the test board is also used for receiving the test point-to-ground short circuit detection signal, adding a +5V test voltage signal to each test point when the printed board is not powered, and sending a first acquisition command to the acquisition module; the system is also used for reading the voltage state data of each test point from the acquisition module and sending the ID number of the voltage state data of each test point to the upper computer;
the power supply module is also used for disconnecting the +5V test voltage signal from each test point after receiving the working voltage detection signal, controlling the power supply module to supply power to the printed board and sending a second acquisition command to the acquisition module; the system is also used for reading the voltage state data of each test point before copying and the ID number of the voltage state data of each test point from the acquisition module and sending the data to the upper computer;
the power supply module is also used for cutting off power supply to the printed board after receiving a download program signal, controlling the power supply module to electrify the printed board after the interface of the copy module is switched on, downloading the program into the printed board through the interface of the copy module at the moment, and sending a download program result to the upper computer;
the power supply module is also used for cutting off the power supply for the printed board after receiving the detection signal after the copying, controlling the power supply module to electrify the printed board after cutting off the connection between the copying module and the printed board, and sending a third acquisition command to the acquisition module; the system is also used for reading the voltage state data of each test point after the copying and the ID number of the voltage state data of each test point from the acquisition module and sending the data to the upper computer;
the acquisition module is used for acquiring the voltage state data of each test point after the probe is in compression joint with the printed board after receiving the first acquisition command, and sending the voltage state data of each test point and the ID number of the voltage state data of each test point to the master control module of the lower computer;
the system is also used for collecting the voltage and the current working current of each test point after the probe is in compression joint with the printed board after receiving a second collecting command, and sending the voltage and the current working current of each test point, the ID number of the voltage and the ID number of the current working current of each test point to a master control module of the lower computer;
the system is also used for collecting the voltage and the current working current of each test point after the probe is in compression joint with the printed board after receiving the third collecting command, and sending the voltage and the current working current of each test point, the ID number of the voltage and the ID number of the current working current of each test point to the master control module of the lower computer;
the upper computer is used for waiting for receiving data after receiving the ready instruction, and analyzing whether the corresponding test point voltage state data has a ground short circuit condition or not after receiving the ID number of each test point voltage state data;
after the ID number of the voltage of each test point before the copy and the ID number of the current working current are received, analyzing whether the corresponding test point voltage or the current working current is qualified or not;
when a downloading program result is received, displaying a result of successful programming or failed programming;
and after the ID number of each test point voltage and the ID number of the current working current after the received copy stroke, analyzing whether the corresponding test point voltage or the current working current is qualified or not.
2. The system for fully automatically detecting the printed board of the vehicle-mounted terminal module according to claim 1, further comprising a stop button,
the stop key is used for sending a stop signal to the electric control module;
and the electronic control module is also used for controlling the actuating mechanism to drive the crimping clamp to lift up after receiving the stop signal, so that the probe on the crimping clamp is loosened from the printed board.
3. The system for fully automatically detecting the printed board of the vehicle-mounted terminal module according to claim 1, wherein the lower computer main control module reads the voltage state data of each test point and the ID number of the voltage state data of each test point after the copying from the acquisition module and sends the data to the upper computer, the voltage state data of each test point are sent one by one, and the sending time interval of the voltage state data of 2 adjacent test points is 1 s.
4. The system of claim 1, wherein the test point voltage status data is shorted to ground at a low level and the test point voltage status data is not shorted to ground at a high level.
5. The system for fully automatically detecting the printed board of the vehicle-mounted terminal module according to claim 1, wherein the upper computer is further used for displaying red color on the data of the unqualified test points.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111517854.3A CN114236352B (en) | 2021-12-13 | 2021-12-13 | Full-automatic detection system of on-vehicle terminal module printed board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111517854.3A CN114236352B (en) | 2021-12-13 | 2021-12-13 | Full-automatic detection system of on-vehicle terminal module printed board |
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| CN114236352A true CN114236352A (en) | 2022-03-25 |
| CN114236352B CN114236352B (en) | 2023-09-22 |
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2021
- 2021-12-13 CN CN202111517854.3A patent/CN114236352B/en active Active
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|---|---|---|---|---|
| GB9417482D0 (en) * | 1993-08-31 | 1994-10-19 | Hewlett Packard Co | Detecting faults on a printed circuit board |
| CN105866657A (en) * | 2016-03-25 | 2016-08-17 | 航天科技控股集团股份有限公司 | Needle bed for automatically detecting printed board, and automatic detection control method |
| CN208421162U (en) * | 2018-07-10 | 2019-01-22 | 佛山市隆中对智能科技有限公司 | A kind of pcb board tester |
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