CN111157873B - Intelligent PCBA program downloading and PCBA automatic testing system applied to industrial production - Google Patents
Intelligent PCBA program downloading and PCBA automatic testing system applied to industrial production Download PDFInfo
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- CN111157873B CN111157873B CN201911366848.5A CN201911366848A CN111157873B CN 111157873 B CN111157873 B CN 111157873B CN 201911366848 A CN201911366848 A CN 201911366848A CN 111157873 B CN111157873 B CN 111157873B
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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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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- 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
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2834—Automated test systems [ATE]; using microprocessors or computers
Abstract
The invention discloses an intelligent PCBA program downloading and PCBA automatic testing system applied to industrial production, which comprises a testing main control board, wherein a microcontroller, a power supply circuit, a local flash and a negative pressure reverse amplification circuit are arranged on the testing main control board, the power supply circuit is used for supplying power to the whole system, the microcontroller is connected with the local flash, the microcontroller is communicated with an upper computer through a USB communication interface, the input end of the negative pressure reverse amplification circuit is connected with a tested PCBA through an input row seat and a connecting wire, the output end of the negative pressure reverse amplification circuit is connected with the microcontroller, and the negative pressure reverse amplification circuit is used for reversely amplifying a sampling voltage and then transmitting the sampling voltage to the microcontroller. The method can reliably, intelligently and efficiently burn/download the program/data/configuration file of the PCBA in batch and efficiently test the PCBA, and combines burning and testing into one.
Description
Technical Field
The invention relates to the field of program/data/configuration file updating and downloading and PCBA automatic testing, in particular to an intelligent PCBA program downloading and PCBA automatic testing system applied to industrial production, and specifically relates to a control panel program/data/configuration file downloading and control panel PCBA automatic debugging application occasion containing a single chip microcomputer/microcontroller.
Background
With the development of a system on a single chip/microcontroller/SoC chip, program/data/configuration file downloading and PCBA testing of a high-density control board become more important, and especially, failure of a high-integration BGA package IC soldered on a PCB due to temperature stress, uneven load and inconsistent deformation is common, and it becomes more critical how to efficiently and quickly download and debug the PCBA. At present, most of program downloading adopts a PCBA manual downloading mode (downloader) or machine programming before pasting; for PCBA testing, manual testing or separate testing platforms are common. But a production platform which combines programming and testing into one is rare.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an intelligent PCBA program downloading and PCBA automatic testing system applied to industrial production, which can reliably, intelligently and efficiently burn/download the program/data/configuration file of the PCBA in batch and efficiently test the PCBA, and integrates the burning and the testing into a whole.
The invention is realized by the following steps: the invention discloses an intelligent PCBA program downloading and PCBA automatic testing system applied to industrial production, which comprises a testing main control board, wherein a microcontroller, a power supply circuit, a local flash and a negative pressure reverse amplification circuit are arranged on the testing main control board, the power supply circuit is used for supplying power to the whole system, the microcontroller is connected with the local flash, the microcontroller is communicated with an upper computer through a USB communication interface, the input end of the negative pressure reverse amplification circuit is connected with the PCBA to be tested through an input row seat and a connecting wire, the output end of the negative pressure reverse amplification circuit is connected with the microcontroller, the negative pressure reverse amplification circuit is used for reversely amplifying negative pressure and sampling the microcontroller, the microcontroller is used for transmitting the sampling information to the upper computer through a USB, and the upper computer judges whether the downloading and PCBA testing are successful or not.
Furthermore, be applied to intelligent PCBA program download and PCBA automatic test system of industrial production still includes the PCBA working current detection circuit that is surveyed, the PCBA working current detection circuit that is surveyed is used for gathering the PCBA working current that is surveyed to transmit for microcontroller, after receiving the PCBA working current that is surveyed PCBA working current detection circuit and gathers, microcontroller compares with the setting value, and output control signal is for the power-on or the outage of the PCBA that is surveyed of switching circuit control.
Furthermore, the switch circuit comprises a switch chip U6, the input end of the switch chip U6 is connected with the output end of the power circuit, the control end of the switch chip U6 is connected with the microcontroller, the microcontroller is used for outputting a control signal to control the on-off of the switch chip U6, and the output end of the switch chip U6 is connected with the PCBA to be tested through the input row seat and the connecting wire and used for supplying power to the PCBA to be tested; the PCBA working current detection circuit to be detected is realized by adopting a current sampling chip U10.
Further, the microcontroller judges whether the file stored in the local Flash is the required file or not according to the specification model, if not, the microcontroller is used for downloading a program/data/configuration file from an upper computer to the local Flash according to the specification model and then from the local to the PCBA to be tested, and the microcontroller is used for automatically testing the test point according to the model.
Further, the power supply circuit comprises a first DC-DC module U1, a second DC-DC module U34 and a third DC-DC module U40, wherein the third DC-DC module U40 is used for realizing the conversion of 5V direct current into 3.3V direct current and supplying power to the PCBA to be tested; the second DC-DC module U34 is used for converting 5V direct current into 3.3V direct current and supplying power to a test main control board circuit; the first DC-DC module U1 is used for realizing negative voltage output of-3.3V and supplying power to the negative voltage of the operational amplifier.
Furthermore, the intelligent PCBA program downloading and PCBA automatic testing system applied to industrial production also comprises a USB-I2C protocol conversion circuit for realizing a USB-I2C protocol conversion function; the USB-I2C protocol conversion circuit comprises a single chip microcomputer U3, the microcontroller is in I2C communication with the single chip microcomputer U3, and the single chip microcomputer U3 is in USB communication with an external computer or equipment.
Furthermore, the negative-pressure reverse amplification circuit comprises a plurality of operational amplifiers, the in-phase input end of each operational amplifier is grounded through a first resistor, the reverse-phase input end of each operational amplifier is connected with the output end of each operational amplifier through a second resistor and a first capacitor, the second resistor is connected with the first capacitor in parallel, the output end of each operational amplifier is respectively connected with the input end of the microcontroller, and the reverse-phase input end of each operational amplifier is connected with the PCBA to be tested through an input row seat and a connecting wire.
The intelligent PCBA program downloading and PCBA automatic testing system applied to industrial production further comprises a PCBA clamp, the PCBA clamp comprises a bottom plate, a PCBA fixing plate, an upper probe fixing plate, a lower probe fixing plate, an upper probe adjusting and limiting device, an upper testing probe and a lower testing probe, the lower testing probe is fixed at the upper end of the lower probe fixing plate and is used for being in contact with the lower surface of a tested PCBA, the upper testing probe is fixed at the lower end of the upper probe fixing plate and is used for being in contact with the upper surface of the tested PCBA, the PCBA fixing plate is located between the lower probe fixing plate and the upper probe fixing plate, the upper probe fixing plate is detachably fixed on the upper probe supporting plate, the lower probe fixing plate is detachably fixed on the bottom plate, the PCBA fixing plate is detachably fixed on a tested PCBA supporting plate, a guide shaft is erected on the bottom plate, and guide holes are respectively formed in the tested PCBA supporting plate and the upper probe supporting plate, the probe adjusting and limiting device comprises an upper probe adjusting and limiting device, a spring is sleeved on the guide shaft and is positioned at the lower end of a PCBA supporting plate to be detected, a screw hole is formed in the side face of the upper probe supporting plate, the upper probe adjusting and limiting device comprises an adjusting limiting plate and an adjusting handle, the adjusting limiting plate is fixed on a bottom plate, a strip-shaped hole is formed in the adjusting limiting plate, and an adjusting rod of the adjusting handle penetrates through the strip-shaped hole of the upper and lower adjusting limiting plates to be in threaded connection with the screw hole in the side face of the upper probe supporting plate;
the upper test probe and the lower test probe are led out by wires and are connected with an input row seat of a test main control board, and after the upper test probe and the lower test probe are electrified, signals of all test points on the PCBA to be tested are led into the test main control board for sampling.
Further, the PCBA fixture further comprises a top plate, the lower end of the guide shaft is fixedly connected with the bottom plate, the upper end of the guide shaft is fixedly connected with the top plate, the lower end of the adjusting limit plate is fixedly connected with the bottom plate, and the upper end of the adjusting limit plate is fixedly connected with the top plate; the number of the guide shafts is four, and the four guide shafts are distributed in a rectangular shape; the PCBA supporting plate to be tested and the upper probe supporting plate are in sliding fit with the guide shaft through the shaft sleeve; and shaft sleeves are fixed in the guide holes of the PCBA supporting plate to be detected and the upper probe supporting plate and are in sliding fit with the guide shafts.
Further, the PCBA anchor clamps still include fine setting bolt, be equipped with the through-hole on PCBA layer board, the last probe layer board respectively, fine setting bolt pushes up on the bottom plate after passing the through-hole of PCBA layer board, last probe layer board in proper order, and the through-hole of going up the probe layer board is the screw hole, and the screw rod of fine setting bolt and the screw hole screw-thread fit of going up the probe layer board. The screw rod of the fine tuning bolt is directly contacted with the cushion block at the bottom. The diameter of the through hole of the PCBA supporting plate is larger than the diameter of the screw rod of the fine tuning bolt, and the interference between the screw rod of the fine tuning bolt and the PCBA supporting plate is avoided.
The invention has the beneficial effects that: the invention realizes that the PCBA programming and testing are realized on the same platform, has friendly and intelligent interface and is efficient and foolproof. The platform can realize I2C download of automatic programs/information of different PCBAs and automatic PCBA test only by replacing the probe clamp system and completely compatible with the test main control board. Practice shows that the PCBA intelligent downloading and PCBA automatic test platform is efficient in operation, foolproof and simple and convenient to operate, well solves the problem of integration of PCBA program downloading and testing, and has high application value.
Drawings
FIG. 1 is a schematic diagram of a test master control board of the present invention;
FIG. 2 is a circuit diagram of a power circuit of the present invention;
FIG. 3 is a circuit diagram of a USB-I2C protocol conversion circuit of the present invention;
FIG. 4 is a circuit diagram of a local flash chip of the present invention;
FIG. 5 is a circuit diagram of the PCBA operating current detection circuit under test of the present invention;
FIG. 6 is a circuit diagram of one of the operational amplifiers of the negative voltage inverting amplifier circuit of the present invention;
FIG. 7 is a schematic view of the PCBA fixture of the present invention;
FIG. 8 is a schematic diagram of an automatic test interface according to the present invention.
In the drawing, 1 is the bottom plate, and 2 are lower probe fixed plate, and 3 are the PCBA fixed plate, and 4 are surveyed the PCBA layer board, and 5 are the upper probe fixed plate, and 6 are the upper probe layer board, and 7 are the guiding axle, and 8 are the axle sleeve, and 9 are the spring, and 10 are adjusting the limiting plate, and 101 is the bar hole, and 11 are adjustment handle, and 12 are the roof, and 13 are the fine setting bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1 to 6, the embodiment discloses a test main control board of an intelligent PCBA program downloading and PCBA automatic test system applied to industrial production, the test main control board is provided with a microcontroller, a power supply circuit, a local flash and a negative pressure reverse amplification circuit, the power supply circuit is used for supplying power to the whole system, the microcontroller is connected with the local flash, the microcontroller is communicated with an upper computer through a USB communication interface, the input end of the negative pressure reverse amplification circuit is connected with the tested PCBA through an input row seat and a connecting wire, the output end of the negative pressure reverse amplification circuit is connected with the microcontroller, the negative pressure reverse amplification circuit is used for reversely amplifying the negative pressure and sampling the microcontroller, the microcontroller is used for transmitting the sampling information to the upper computer through a USB, and the upper computer judges whether the downloading and the PCBA testing are successful or not.
The ADuCM320BBCZI single chip microcomputer and the peripheral circuit are the core of the test main control board, the ADuCM320BBCZI is an ARM Cortex-M3 microcontroller, and the on-chip resources comprise 16 channels 14 bits 1MSPS ADC/8 channels 12 bits VDAC/4 channels 0-150 mA IDACS/2xI2C/2xSPI/32KB SRAM/2x128KB Flash and the like. ADuCM320BBCZI 3.3V power supply, I2C are used for external communication, the SPI bus is connected with the FLASH chip in the board and is used for storing programs/data/configuration files locally, and the ADC is used for sampling the output of the negative pressure reverse amplification circuit and sampling the working current of 0.75V, 1V, 3.3V and PCBA.
The working current detection circuit of the PCBA to be detected is realized by a current sampling chip U10 MAX9634FERS +, and the relation between the output voltage and the current of the design is as follows:
umon = Iload Gain Rsense = Iload 50 0.1/8=5 Iload/8, the operating current of the tested PCBA was indirectly tested by sampling the output voltage.
Furthermore, be applied to intelligent PCBA program download and PCBA automatic test system of industrial production still includes the PCBA working current detection circuit that is surveyed, the PCBA working current detection circuit that is surveyed is used for gathering the PCBA working current that is surveyed to transmit for microcontroller, after receiving the PCBA working current that is surveyed PCBA working current detection circuit and gathers, microcontroller compares with the setting value, and output control signal is for the power-on or the outage of the PCBA that is surveyed of switching circuit control.
Furthermore, the switch circuit comprises a switch chip U6, the input end of the switch chip U6 is connected with the output end of the power circuit, the control end of the switch chip U6 is connected with the microcontroller, the microcontroller is used for outputting a control signal to control the on-off of the switch chip U6, and the output end of the switch chip U6 is connected with the PCBA to be tested through the input row seat and the connecting wire and used for supplying power to the PCBA to be tested; the PCBA working current detection circuit to be detected is realized by adopting a current sampling chip U10.
Further, the microcontroller judges whether the file stored in the local Flash is the required file or not according to the specification model, if not, the microcontroller is used for downloading a program/data/configuration file from an upper computer to the local Flash according to the specification model and then from the local to the PCBA to be tested, and the microcontroller is used for automatically testing the test point according to the model.
Further, the power supply circuit comprises a first DC-DC module U1, a second DC-DC module U34 and a third DC-DC module U40, wherein the third DC-DC module U40 is used for realizing the conversion of 5V direct current into 3.3V direct current and supplying power to the PCBA to be tested; the second DC-DC module U34 is used for converting 5V direct current into 3.3V direct current and supplying power to a test main control board circuit; the first DC-DC module U1 is used for realizing negative voltage output of-3.3V and supplying power to the negative voltage of the operational amplifier. The power supply circuit consists of U1 LT1931A, U34 TPS82084SILT, U40 ISL8205 MIRZ-T7A. The U40 ISL8205MIRZ-T7A realizes DC-DC 5V/3.3V to supply power to the PCBA to be tested. The U34 TPS82084SILT realizes 5V to 3.3V but supplies power to the local test main control board circuit. And U1 LT1931A realizes negative voltage output of-3.3V and supplies power to the negative voltage of the operational amplifier.
Because the main MCU has no USB bus resource, the test main control board adopts an additional singlechip U3C 8051F320 to realize the USB-I2C protocol conversion function, the main MCU and the singlechip U3C 8051F320 communicate with each other by I2C, and the singlechip U3C 8051F320 and an external computer or equipment (such as a PC and the like) communicate by USB.
Furthermore, the intelligent PCBA program downloading and PCBA automatic testing system applied to industrial production also comprises a USB-I2C protocol conversion circuit for realizing a USB-I2C protocol conversion function; the USB-I2C protocol conversion circuit comprises a single chip microcomputer U3, the microcontroller is in I2C communication with the single chip microcomputer U3, and the single chip microcomputer U3 is in USB communication with an external computer or equipment.
The negative-pressure reverse amplification circuit is realized by 5 operational amplifiers AD8030ARJZ-REEL7, and because negative-pressure sampling is adopted, the negative-pressure reverse amplification circuit firstly carries out reverse amplification through the operational amplifiers and then carries out sampling operation on the main MCU. The operational amplifier chip is bipolar rail-to-rail output, the quiescent current is as low as 1.3mA, and SOIC-8 is packaged.
Further, the negative-pressure reverse amplification circuit comprises a plurality of operational amplifiers, the non-inverting input end of the operational amplifier U19A is grounded through a resistor R118, the inverting input end of the operational amplifier U19A is connected with the output end of the operational amplifier U19A through a resistor R112 and a capacitor C321, the resistor R112 is connected with the capacitor C321 in parallel, the output end of the operational amplifier U19A is connected with the input end of the microcontroller, and the inverting input end of the operational amplifier U19A is connected with the input socket through a resistor R117 and then connected with the PCBA to be tested through a connecting wire. The circuits of the other operational amplifiers are the same as those of the operational amplifier U19A.
Example two
Referring to fig. 7, the present embodiment discloses a PCBA fixture, which includes a bottom plate 1, a PCBA fixing plate 3, an upper probe fixing plate 5, a lower probe fixing plate 2, an upper probe adjustment limiting device, an upper test probe and a lower test probe, wherein the lower test probe is fixed at the upper end of the lower probe fixing plate and is used for contacting with the lower surface of the PCBA to be tested, the upper test probe is fixed at the lower end of the upper probe fixing plate and is used for contacting with the upper surface of the PCBA to be tested, the PCBA fixing plate is located between the lower probe fixing plate and the upper probe fixing plate, the upper probe fixing plate is detachably (such as bolts and the like) fixed on an upper probe supporting plate 6, the lower probe fixing plate is detachably (such as bolts and the like) fixed on the bottom plate, the PCBA fixing plate is detachably (such as bolts and the like) fixed on a PCBA supporting plate 4 to be tested, and a guide shaft 7 is erected on the bottom plate, be equipped with the guiding hole on surveyed PCBA layer board, the top probe layer board respectively, with guiding axle sliding fit, the cover has spring 9 on the guiding axle, the spring is located the lower extreme of being surveyed PCBA layer board, the side of top probe layer board is equipped with the screw, it adjusts stop device including adjusting limiting plate 10 and adjustment handle 11 to go up the probe, it fixes on the bottom plate to adjust the limiting plate, be equipped with the bar hole on the regulation limiting plate, adjustment handle's regulation pole passes the bar hole of adjusting the limiting plate from top to bottom and the screw threaded connection of top probe layer board side.
Further, the PCBA fixture further comprises a top plate 12, the lower end of the guide shaft is fixedly connected with the bottom plate, the upper end of the guide shaft is fixedly connected with the top plate, the lower end of the adjusting limit plate is fixedly connected with the bottom plate, and the upper end of the adjusting limit plate is fixedly connected with the top plate; the number of the guide shafts is four, and the four guide shafts are distributed in a rectangular shape; the PCBA supporting plate to be tested and the upper probe supporting plate are in sliding fit with the guide shaft through the shaft sleeve; and a shaft sleeve 8 or a linear bearing is fixed in the guide holes of the PCBA supporting plate to be detected and the upper probe supporting plate, and the shaft sleeve is in sliding fit with the guide shaft.
Further, the PCBA anchor clamps still include fine setting bolt 13, be equipped with the through-hole on PCBA layer board, the upper probe layer board respectively, fine setting bolt pushes up on the cushion that is equipped with on the bottom plate after passing the through-hole of PCBA layer board, upper probe layer board in proper order.
Because the upper and lower surfaces of the PCBA to be tested can be provided with test points, the probes and the probe fixing plates are arranged on the upper and lower surfaces. The PCBA to be tested is placed on the fixed plate, the upper probe supporting plate 10 can move up and down along the guide shaft 12, after the probes are aligned, the upper probe supporting plate moves down and enables the probes to be accurately contacted under the side effect of fine adjustment threads of the height of the probes, as the probes are led out by wires and connected with the input row seats of the main control board, after the probes are powered on, signals of all test points on the PCBA can be led into the main control board for sampling, a system can burn programs/data/configuration files of the PCBA to be tested firstly, and then the PCBA is automatically tested. The specification and the model are input once in the whole process, then the system can firstly judge whether the file stored in the local Flash is the required file, if not, the system can download the program/data/configuration file of the download program/data/configuration file from the upper computer to the local Flash according to the specification and the model, and then download the file to the PCBA to be tested from the local in batches.
EXAMPLE III
Referring to fig. 1 to 7, the embodiment discloses an intelligent PCBA program download and PCBA automated testing system applied to industrial production, which includes a test main control board disclosed in the first embodiment and a PCBA fixture disclosed in the second embodiment. The testing main control board consists of six parts of an ADuCM320BBCZI microcontroller, a peripheral circuit, a power supply circuit, a USB-I2C circuit, a FLASH, a working current detection circuit of a PCBA to be tested and a negative pressure reverse amplification circuit, and a hardware system block diagram of the testing main control board is shown in figure 1.
The upper test probe and the lower test probe of the PCBA fixture are led out by wires and are connected with an input row seat of a test main control board, and after the PCBA fixture is electrified, signals of all test points on the PCBA to be tested are led into the test main control board for sampling.
After the program/data/configuration file is downloaded into the PCBA to be tested, the system automatically tests the test points according to the model, and an automatic test interface is shown in figure 8.
The invention is realized by adopting the main control board and the clamp together, and the clamp can be designed aiming at the PCBA independently, so that the main control board can be compatible with different PCBAs. When downloading the program/data/configuration file, the main control board will determine whether the locally stored model version is consistent with the requirement. If consistent, the program/data/configuration file will be downloaded directly from local; if the difference is not consistent, the main control board firstly downloads from the upper computer to the local, and then the batch modules are all burnt to the PCBA from the local.
The operation interface is friendly, and one-button operation is realized. The manufacturer only needs to change the product code in the test specification, the system can automatically complete the remaining program/data/configuration file programming and PCBA automatic test, the staff only needs to change the PCBA of the probe platform, and the interface can display the OK or FAIL state. The invention designs a two-in-one system for downloading a program/data/configuration file and automatically testing the PCBA, which comprises two platforms of hardware and a structure. In the aspect of downloading, whether the program/data/configuration file needs to be updated to the local or not can be automatically and intelligently judged, and then the program/data/configuration file is downloaded from the local; in the aspect of PCBA testing, automatic testing is realized to reduce misjudgment and improve testing efficiency; in the aspect of compatibility, the platform can realize the downloading and the testing of different PCBAs, and only the PCBA fixing plate and the upper and lower probe fixing plates in the fixture device need to be replaced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides an intelligence PCBA program download and PCBA automatic test system for industrial production which characterized in that: the test system comprises a test main control board, wherein a microcontroller, a power supply circuit, a local flash and a negative pressure reverse amplification circuit are arranged on the test main control board, the power supply circuit is used for supplying power to the whole system, the microcontroller is connected with the local flash, the microcontroller is communicated with an upper computer through a USB communication interface, the input end of the negative pressure reverse amplification circuit is connected with a PCBA to be tested through an input row seat and a connecting wire, the output end of the negative pressure reverse amplification circuit is connected with the microcontroller, the negative pressure reverse amplification circuit reversely amplifies negative pressure and samples the microcontroller, the microcontroller transmits the sampling information to the upper computer through a USB, and the upper computer judges whether downloading and PCBA testing are successful or not;
the microcontroller judges whether a file stored in the local Flash is a required file or not according to the input specification model, if not, the microcontroller is used for downloading a program, data and a configuration file from an upper computer to the local Flash according to the specification model and then downloading the program, the data and the configuration file to a PCBA to be tested from the local, and the microcontroller is used for automatically testing the test point according to the model;
the PCBA fixture comprises a bottom plate, a PCBA fixing plate, an upper probe fixing plate, a lower probe fixing plate, an upper probe adjusting and limiting device, an upper test probe and a lower test probe, wherein the lower test probe is fixed at the upper end of the lower probe fixing plate and is used for contacting with the lower surface of a tested PCBA, the upper test probe is fixed at the lower end of the upper probe fixing plate and is used for contacting with the upper surface of the tested PCBA, the PCBA fixing plate is located between the lower probe fixing plate and the upper probe fixing plate, the upper probe fixing plate is detachably fixed on the upper probe supporting plate, the lower probe fixing plate is detachably fixed on the bottom plate, the PCBA fixing plate is detachably fixed on the tested PCBA supporting plate, a guide shaft is erected on the bottom plate, guide holes are respectively formed in the tested PCBA supporting plate and the upper probe supporting plate and are in sliding fit with the guide shaft, and a spring is sleeved on the guide shaft, the spring is positioned at the lower end of the PCBA supporting plate to be measured, a screw hole is formed in the side face of the upper probe supporting plate, the upper probe adjusting and limiting device comprises an adjusting and limiting plate and an adjusting handle, the adjusting and limiting plate is fixed on the bottom plate, a strip-shaped hole is formed in the adjusting and limiting plate, and an adjusting rod of the adjusting handle penetrates through the strip-shaped hole of the upper and lower adjusting and limiting plates to be in threaded connection with the screw hole in the side face of the upper probe supporting plate;
the upper test probe and the lower test probe are led out by wires and are connected with an input row seat of a test main control board, and after the upper test probe and the lower test probe are electrified, signals of all test points on the PCBA to be tested are led into the test main control board for sampling;
the PCBA clamp further comprises a fine adjustment bolt, through holes are formed in the PCBA supporting plate and the upper probe supporting plate respectively, the fine adjustment bolt sequentially penetrates through the through holes of the PCBA supporting plate and the upper probe supporting plate and then abuts against the bottom plate, the through hole of the upper probe supporting plate is a threaded hole, and a screw rod of the fine adjustment bolt is in threaded fit with the threaded hole of the upper probe supporting plate;
the detection circuit is used for monitoring the working current of the PCBA to be detected, the microcontroller receives the working current of the PCBA to be detected, which is collected by the detection circuit, and then compares the working current with a set value to judge whether the working current of the PCBA is abnormal, and in addition, the microcontroller outputs a control signal to the switching circuit to control the power-on or power-off of the PCBA to be detected;
the negative-pressure reverse amplification circuit comprises a plurality of operational amplifiers, wherein the non-inverting input end of each operational amplifier is grounded through a first resistor, the inverting input end of each operational amplifier is connected with the output end of each operational amplifier through a second resistor and a first capacitor, the second resistor is connected with the first capacitor in parallel, the output end of each operational amplifier is connected with the input end of the microcontroller, and the inverting input end of each operational amplifier is connected with the PCBA to be tested through an input row seat and a connecting wire.
2. The intelligent PCBA program download and PCBA automatic test system applied to industrial production of claim 1, wherein: the switch circuit comprises a switch chip (U6), the input end of the switch chip (U6) is connected with the output end of the power circuit, the control end of the switch chip (U6) is connected with the microcontroller, the microcontroller is used for outputting a control signal to control the on-off of the switch chip (U6), and the output end of the switch chip (U6) is used for supplying power to the PCBA to be tested; the output end of the switch chip (U6) is connected with the PCBA to be tested through the input row seat and the connecting wire and used for supplying power to the PCBA to be tested; the PCBA working current detection circuit to be detected is realized by adopting a current sampling chip (U10).
3. The intelligent PCBA program download and PCBA automatic test system applied to industrial production of claim 1, wherein: the power supply circuit comprises a first DC-DC module (U1), a second DC-DC module (U34) and a third DC-DC module (U40), wherein the third DC-DC module (U40) is used for converting 5V direct current into 3.3V direct current and supplying power to the PCBA to be tested; the second DC-DC module (U34) is used for converting 5V direct current into 3.3V direct current and supplying power to the test main control board; the first DC-DC module (U1) is used for realizing negative voltage output of-3.3V and supplying power to the negative voltage of the operational amplifier.
4. The intelligent PCBA program download and PCBA automatic test system applied to industrial production of claim 1, wherein: the USB-I2C protocol conversion circuit is used for realizing the USB-I2C protocol conversion function; the USB-I2C protocol conversion circuit comprises a single chip microcomputer (U3), the microcontroller is in I2C communication with the single chip microcomputer (U3), and the single chip microcomputer (U3) is in USB communication with an external computer.
5. The intelligent PCBA program download and PCBA automatic test system applied to industrial production of claim 1, wherein: the PCBA fixture further comprises a top plate, the lower end of the guide shaft is fixedly connected with the bottom plate, the upper end of the guide shaft is fixedly connected with the top plate, the lower end of the adjusting limit plate is fixedly connected with the bottom plate, and the upper end of the adjusting limit plate is fixedly connected with the top plate; the number of the guide shafts is four, and the four guide shafts are distributed in a rectangular shape; the PCBA supporting plate to be tested and the upper probe supporting plate are in sliding fit with the guide shaft through the shaft sleeve; and shaft sleeves are fixed in the guide holes of the PCBA supporting plate to be detected and the upper probe supporting plate and are in sliding fit with the guide shafts.
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| CN113377084A (en) * | 2021-06-24 | 2021-09-10 | 中国第一汽车股份有限公司 | Burning device and method for automobile electronic control unit |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706550A (en) * | 2009-11-19 | 2010-05-12 | 福建联迪商用设备有限公司 | Method for testing mainboard |
| CN201489086U (en) * | 2009-07-17 | 2010-05-26 | 中国人民解放军63908部队 | Universal testing system for digital circuit board |
| CN101957428A (en) * | 2010-08-25 | 2011-01-26 | 京信通信系统（中国）有限公司 | Automatic test method and tool of monitoring circuit board |
| CN202204837U (en) * | 2011-08-05 | 2012-04-25 | 上海韬盛电子科技有限公司 | Manual type chip test fixture |
| CN204228757U (en) * | 2014-11-14 | 2015-03-25 | 中国电子科技集团公司第二十六研究所 | Wafer scale SAW (Surface Acoustic Wave) device low-loss structured testing fixture |
| CN204359927U (en) * | 2014-12-05 | 2015-05-27 | 许继集团有限公司 | A kind of single-board testing device |
| CN104777416A (en) * | 2015-04-30 | 2015-07-15 | 北京星河康帝思科技开发股份有限公司 | Testing method and tester for circuit board |
| CN205562746U (en) * | 2016-03-24 | 2016-09-07 | 东莞市紫桢电子有限公司 | Automatic general test fixture finely tunes |
| CN106526457A (en) * | 2016-12-21 | 2017-03-22 | 成都秦川科技发展有限公司 | Circuit board detection instrument and system |
| CN106569122A (en) * | 2016-11-12 | 2017-04-19 | 广东科翔电子科技有限公司 | Method of improving PCB finished product testing efficiency |
| CN207516507U (en) * | 2017-12-08 | 2018-06-19 | 张家港市得道电子有限公司 | A kind of quick test fixture of circuit board |
| CN109901052A (en) * | 2019-03-20 | 2019-06-18 | 成都秦川物联网科技股份有限公司 | A kind of circuit board detecting system and method being applicable in automatic production line |
| CN209215543U (en) * | 2018-11-15 | 2019-08-06 | 深圳市沃肯达科技有限公司 | A kind of pcb board probe tester of dust removal fine tuning |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110308385A (en) * | 2019-07-19 | 2019-10-08 | 惠尔丰(中国)信息系统有限公司 | A kind of PCBA Online Transaction Processing and method |
-
2019
- 2019-12-26 CN CN201911366848.5A patent/CN111157873B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201489086U (en) * | 2009-07-17 | 2010-05-26 | 中国人民解放军63908部队 | Universal testing system for digital circuit board |
| CN101706550A (en) * | 2009-11-19 | 2010-05-12 | 福建联迪商用设备有限公司 | Method for testing mainboard |
| CN101957428A (en) * | 2010-08-25 | 2011-01-26 | 京信通信系统（中国）有限公司 | Automatic test method and tool of monitoring circuit board |
| CN202204837U (en) * | 2011-08-05 | 2012-04-25 | 上海韬盛电子科技有限公司 | Manual type chip test fixture |
| CN204228757U (en) * | 2014-11-14 | 2015-03-25 | 中国电子科技集团公司第二十六研究所 | Wafer scale SAW (Surface Acoustic Wave) device low-loss structured testing fixture |
| CN204359927U (en) * | 2014-12-05 | 2015-05-27 | 许继集团有限公司 | A kind of single-board testing device |
| CN104777416A (en) * | 2015-04-30 | 2015-07-15 | 北京星河康帝思科技开发股份有限公司 | Testing method and tester for circuit board |
| CN205562746U (en) * | 2016-03-24 | 2016-09-07 | 东莞市紫桢电子有限公司 | Automatic general test fixture finely tunes |
| CN106569122A (en) * | 2016-11-12 | 2017-04-19 | 广东科翔电子科技有限公司 | Method of improving PCB finished product testing efficiency |
| CN106526457A (en) * | 2016-12-21 | 2017-03-22 | 成都秦川科技发展有限公司 | Circuit board detection instrument and system |
| CN207516507U (en) * | 2017-12-08 | 2018-06-19 | 张家港市得道电子有限公司 | A kind of quick test fixture of circuit board |
| CN209215543U (en) * | 2018-11-15 | 2019-08-06 | 深圳市沃肯达科技有限公司 | A kind of pcb board probe tester of dust removal fine tuning |
| CN109901052A (en) * | 2019-03-20 | 2019-06-18 | 成都秦川物联网科技股份有限公司 | A kind of circuit board detecting system and method being applicable in automatic production line |
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|---|---|
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