CN112731115A - PCBA (printed circuit board assembly) board test structure, system and PCBA board test method - Google Patents
PCBA (printed circuit board assembly) board test structure, system and PCBA board test method Download PDFInfo
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- CN112731115A CN112731115A CN202011634900.3A CN202011634900A CN112731115A CN 112731115 A CN112731115 A CN 112731115A CN 202011634900 A CN202011634900 A CN 202011634900A CN 112731115 A CN112731115 A CN 112731115A
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention provides a PCBA board test structure, a PCBA board test system and a PCBA board test method.A main processor of the PCBA board test structure is respectively connected with a main control board and a control switch, and the on-off of the control switch and the number of the main control boards for processing signals are controlled according to an instruction input by a control terminal; the switch board supplies power to the PCBA and collects signals of the PCBA, the switch board is connected with the main control board in a one-to-one correspondence mode, and the main processor processes the signals collected by the switch board through the main control board; each control switch is connected with two groups of switch boards, and the number of the switch boards connected by a single PCBA board is increased or decreased by closing or opening the control switch. The invention increases or reduces the number of test points of the test equipment by controlling the on-off of the switch, satisfies the test of PCBA boards with different points, realizes the test of a plurality of PCBA boards by selecting the number of the main control boards participating in signal processing, avoids the problem of increasing equipment and workers, reduces the cost and the occupied area, and improves the efficiency of production and management.
Description
Technical Field
The invention relates to the field of test equipment, in particular to a PCBA test structure, a PCBA test system and a PCBA test method.
Background
In the test equipment industry today, most test equipment is bulky and can only support a test function, and if the PCBA board that has a lot of points or a different PCBA board is encountered, the test equipment needs to be purchased additionally. And present test equipment can only test a PBCA board once, and efficiency is not high, if want to improve efficiency, only can rely on increasing a large amount of equipment and workman, increases the cost like this again, has enlarged area again, is unfavorable for production and management.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a PCBA test structure, a PCBA test system and a PCBA test method, wherein a main processor is respectively connected with a main control board and a control switch, the number of switch boards connected with a single PCBA is increased or reduced through the on-off of the control switch, the test of PCBA with different points is met, and the test of a plurality of PCBA boards is realized through the selection of the number of the main control boards participating in signal processing, so that the problems of increasing equipment and workers are avoided, the cost and the floor area are reduced, and the production and management efficiency is improved.
In order to solve the above problems, the present invention adopts a technical solution as follows: a PCBA board test structure, comprising: the main processor is respectively connected with the main control boards and the control switches, and controls the on-off of the control switches and determines the number of the main control boards for processing signals according to instructions input by a control terminal; the switch board is connected with the PCBA, power is supplied to the PCBA through the switch board, signals of the PCBA are collected, the switch board is connected with the main control board in a one-to-one correspondence mode, and the main processor processes the signals collected by the switch board through the main control board; each control switch is connected with two groups of switch boards, and the number of the switch boards connected by the PCBA board is increased or decreased by closing or opening the control switches.
Further, the number of the control switches is smaller than the number of the groups of the switch boards, and the switch board parts connected with each control switch are the same or completely different.
Further, the number of the control switches is 3, and the number of the switch boards is 4.
Furthermore, the PCBA board test structure also comprises a signal bus, and the main control board is connected with the switch board through the signal bus.
Furthermore, the PCBA board test structure also comprises a control bus, and the main processor is connected with the control switch and the main control board through different control buses.
Based on the same inventive concept, the invention also provides a PCBA board test system, which comprises a control terminal and a PCBA board test structure, wherein the control terminal is connected with the PCBA board test structure, and the PCBA board is tested through the PCBA board test structure; the PCBA board test structure comprises a main processor, at least two main control boards, a control switch and at least two groups of switch boards, wherein the main processor is respectively connected with the main control boards and the control switch, and controls the on-off of the control switch and determines the number of the main control boards for processing signals according to an instruction input by a control terminal; the switch board is connected with the PCBA, power is supplied to the PCBA through the switch board, signals of the PCBA are collected, the switch board is connected with the main control board in a one-to-one correspondence mode, and the main processor processes the signals collected by the switch board through the main control board; each control switch is connected with two groups of switch boards, and the number of the switch boards connected by the PCBA board is increased or decreased by closing or opening the control switches.
Further, the number of the control switches is smaller than the number of the groups of the switch boards, and the switch board parts connected with each control switch are the same or completely different.
Further, the number of the control switches is 3, and the number of the switch boards is 4.
Furthermore, the PCBA board test structure also comprises a signal bus, and the main control board is connected with the switch board through the signal bus.
Based on the same inventive concept, the invention also provides a PCBA board testing method, which comprises the following steps: s101: the main processor receives an instruction input by the control terminal and acquires on-off information of the control switch according to the instruction; s102: controlling the corresponding control switches to be switched on or switched off according to the on-off information so as to increase or decrease the number of switch boards connected with a single PCBA board, wherein two ends of each control switch are respectively connected with a group of switch boards, and the switch boards supply power to the PCBA board and collect signals of the PCBA board; s103: and receiving signals transmitted by the main control board, and forwarding the signals to the control terminal, wherein the signals are acquired by the switch board correspondingly connected with the main control board.
Compared with the prior art, the invention has the beneficial effects that: the main processor is respectively connected with the main control board and the control switch, the number of switch boards connected with a single PCBA board is increased or reduced through the on-off of the control switch, the test of PCBA boards with different points is met, the test of a plurality of PCBA boards is realized through the determination of the number of the main control board, the problem of increasing equipment and workers is avoided, the cost and the occupied area are reduced, and the production and management efficiency is improved.
Drawings
FIG. 1 is a structural diagram of an embodiment of a PCBA board test structure according to the present invention;
FIG. 2 is a schematic connection diagram of an embodiment of a PCBA test structure according to the present invention;
FIG. 3 is a block diagram of an embodiment of a PCBA board test system in accordance with the present invention;
FIG. 4 is a schematic connection diagram of an embodiment of a PCBA test structure according to the present invention;
FIG. 5 is a flowchart illustrating a PCBA board testing method according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Referring to fig. 1-2, fig. 1 is a structural diagram of an embodiment of a PCBA board test structure of the present invention; fig. 2 is a schematic connection diagram of an embodiment of the PCBA board test structure of the present invention, which is described in detail with reference to fig. 1-2.
In this embodiment, the PCBA board test structure includes: the main processor is respectively connected with the main control boards and the control switches, and controls the on-off of the switches and determines the number of the main control boards for processing signals according to instructions input by the control terminal; the switch board is connected with the PCBA, power is supplied to the PCBA through the switch board, signals of the PCBA are collected, the switch board is connected with the main control board in a one-to-one correspondence mode, and the main processor processes the signals collected by the switch board through the main control board; each control switch is connected with two groups of switch boards, and the number of the switch boards connected by a single PCBA board is increased or decreased by closing or opening the control switch.
In this embodiment, the number of the control switches is smaller than the number of groups of switch boards, and the switch board parts connected with each control switch are the same or completely different, and the switch boards of different groups are integrated by closing the control switches, so that the test of the PCBA board with a large number of test points is realized.
In this embodiment, the main processor is connected to the control terminal, and controls the on/off of the control switch and determines the number of main control boards processing signals according to an instruction sent by the control terminal. The number of the main control boards for processing signals is the same as that of the PCBA boards connected with the switch board, and different main control boards control the switch board to collect signals of different PCBA boards and supply power to the PCBA boards.
In this embodiment, the number of the control switches is 3, the number of the switch boards is 4, and the number of the main control boards is four. In other embodiments, the number of the control switches may also be 4, 5, or other numbers, and the number of the main control board and the switch board may also be set according to actual requirements, and only the main processor needs to be able to control the control switches and the main control board, which is not limited herein.
In this embodiment, the main processor is an MCU, and the main control board is an ATM main control board, and in other embodiments, the main processor may also be a CPU, an SOC, or other processors capable of receiving instructions, receiving data transmitted by the main control board, and controlling the main control board and the control switch. The main control board may also be other types of main control boards on the market, and is not limited herein.
In this embodiment, each group of switch boards includes 4 switch boards, and in other embodiments, each group of switch boards may also include 3, 5, and other numbers of switch boards, and it is only necessary that the main control board can control the switch boards, which is not limited herein.
In this embodiment, the PCBA board test structure further includes a signal bus, and the main control board is connected to the switch board through the signal bus. The main control board receives the signals transmitted by the switch board through the signal bus.
In this embodiment, the PCBA board test structure further includes a control bus, and the main processor is connected to the control switch and the main control board through different control buses.
The PCBA board test structure is further described below by way of a specific embodiment of the PCBA board test structure.
In a specific embodiment, the number of the switch boards is 4, the number of the control switches is three, the switch boards include control switches 1, control switches 2 and control switches 3, and the number of the main control boards is 4, and the main control boards include main control boards 1, 2, 3 and 4. The control terminal is PC (computer) connected with the main processor through USB or network interface, and the main processor is MCU. The PCBA board test structure is provided with a single-core mode, a double-core mode and a four-core mode. The PC sends commands to the MCU through the USB or the network interface, the MCU carries out logic processing and analysis on the received commands, and then controls the closing state of 3 control switches and the working state of 4 main control boards through 7 groups of control buses. The main control board is connected with the switch board through a signal bus, so that the signal transmission is fast, synchronous and free from interference.
When the PC sets the mode as a single-core mode, the MCU closes 3 control switches, carries out logic processing on the command and sends the command to the main control board 1, the signal bus controls the switch boards 1-16 to measure the PCBA board with the maximum test point number reaching 8192, after the measurement is finished, data is transmitted back to the ATM board 1 through the signal bus, the ATM board 1 transmits the data back to the MCU through the control bus for processing, the data is transmitted back to the PC through the USB or the network port after being converted through the MCU, and the PC carries out further processing and display.
When in the dual-core mode, the MCU closes the control switch 1 and the control switch 3, the command is processed and then sent to the main control board 1 and the main control board 3, the switch boards are divided into two groups of switch boards 1-8 and switch boards 9-16, the maximum measurable points of which reach 4096 respectively, the two groups of switch boards collect data of different PCBA boards respectively and then transmit the data back to the main control board 1 and the main control board 3, and the MCU processes the data and then transmits the data back to the PC for further processing and output.
During the quad-core mode, the MCU sets 3 control switches to be in a disconnection mode, processes data and sends the processed data to the ATM boards 1-4, and the development boards are divided into 4 groups at this time and respectively comprise: the switch boards 1-4, 5-8, 9-12 and 13-16, the maximum measurable points of each group reach 2048, the ATM board 1 controls the development board 1-4, the ATM board 2 controls the development board 5-8, the ATM board 3 controls the development board 9-12 and the ATM board 4 controls the development board 13-16, four groups collect the data of four PCBA boards and then transmit the data back to the corresponding ATM board, and the data are processed by the MCU and then transmitted back to the PC end for further processing and output.
In this embodiment, the control terminal sets a specific scoring structure, can flexibly switch the test mode, and transmits the designated command to the PCBA board test structure, after the collected signal is processed by the PCBA board test structure, the signal is returned to the control terminal, and the control terminal processes and outputs the signal.
In this embodiment, the main processor is a core processing part of the PCBA board test structure, receives a command from the control terminal, performs logic processing on the command, controls the working states of the main control board and the control switch, receives data returned by the main control board, processes the data again, and transmits the data to the control terminal through the USB or the network interface for further processing. And after the main control board analyzes the instruction sent by the main processor, each switch board is controlled and detected according to the content acquired by analysis, and the signals acquired by the switch boards are transmitted back to the main processor to wait for further processing of the main processor.
The PCBA board test structure of the invention enables the control bus, the signal bus and the bus supplying power to the PCBA board to be arranged relatively independently, and prevents the buses from interfering with each other.
Compared with the prior art, the invention has the following advantages:
1, the functions are abundant: integrating the function to be tested of a plurality of boards and the point expansion function;
2, the flexibility is high: the serial connection and the parallel connection are flexibly switched, and a plurality of test modes are provided;
3, the lower computer controls the hardware part, so that the software program requirement of the upper computer is reduced, and the running time is saved to a certain extent;
4, the processing speed is high: the signal bus, the control bus, the power line and the like are relatively independent and do not interfere with each other, so that the running speed is improved;
5, the stability is strong, and the efficiency is high: the four-core mode can measure 4 same or different PCBA boards at most simultaneously;
6, the application range is wide: the maximum measurable point number of the single-core mode reaches 8192 points;
7, high integration level and low cost.
Has the advantages that: the PCBA board test structure of the invention connects the main processor with the main control board and the control switch respectively, increases or reduces the number of switch boards connected with a single PCBA board through the on-off of the control switch, meets the test of PCBA boards with different points, realizes the test of a plurality of PCBA boards through the selection of the number of the main control boards participating in signal processing, avoids the problem of increasing equipment and workers, reduces the cost and the occupied area, and improves the efficiency of production and management.
Based on the same inventive concept, the present invention further provides a PCBA board testing system, please refer to fig. 3 and 4, fig. 3 is a structural diagram of an embodiment of the PCBA board testing system of the present invention; fig. 4 is a schematic connection diagram of an embodiment of the PCBA board test structure of the present invention, and the PCBA board test system of the present invention is described with reference to fig. 3 and 4.
In this embodiment, the PCBA board test system includes a control terminal and a PCBA board test structure, the control terminal is connected with the PCBA board test structure, and the PCBA board is tested through the PCBA board test structure; the PCBA board test structure comprises a main processor, at least two main control boards, a control switch and at least two groups of switch boards, wherein the main processor is respectively connected with the main control boards and the control switch, and controls the on-off of the switch and determines the number of the main control boards for processing signals according to an instruction input by a control terminal; the switch board is connected with the PCBA, power is supplied to the PCBA through the switch board, signals of the PCBA are collected, the switch board is connected with the main control board in a one-to-one correspondence mode, and the main processor processes the signals collected by the switch board through the main control board; each control switch is connected with two groups of switch boards, and the number of the switch boards connected by a single PCBA board is increased or decreased by closing or opening the control switch.
In this embodiment, the number of the control switches is smaller than the number of groups of switch boards, and the switch board parts connected with each control switch are the same or completely different, and the switch boards of different groups are integrated by closing the control switches, so that the test of the PCBA board with a large number of test points is realized.
In this embodiment, the main processor is connected to the control terminal, and controls the on/off of the switch and determines the number of main control boards processing signals according to an instruction sent by the control terminal. The number of the main control boards for processing signals is the same as that of the PCBA boards connected with the switch board, and different main control boards control the switch board to collect signals of different PCBA boards and supply power to the PCBA boards.
In this embodiment, the number of the control switches is 3, the number of the switch boards is 4, and the number of the main control boards is four. In other embodiments, the number of the control switches may also be 4, 5, or other numbers, and the number of the main control board and the switch board may also be set according to actual requirements, and only the main processor needs to be able to control the control switches and the main control board, which is not limited herein.
In this embodiment, the main processor is an MCU, and the main control board is an ATM main control board, and in other embodiments, the main processor may also be a CPU, an SOC, or other processors capable of receiving instructions, receiving data transmitted by the main control board, and controlling the main control board and the control switch. The main control board may also be other types of main control boards on the market, and is not limited herein.
In this embodiment, each group of switch boards includes 4 switch boards, and in other embodiments, each group of switch boards may also include 3, 5, and other numbers of switch boards, and it is only necessary that the main control board can control the switch boards, which is not limited herein.
In this embodiment, the PCBA board test structure further includes a signal bus, and the main control board is connected to the switch board through the signal bus. The main control board receives the signals transmitted by the switch board through the signal bus.
In this embodiment, the PCBA board test structure further includes a control bus, and the main processor is connected to the control switch and the main control board through different control buses.
The PCBA board test system is further described below with reference to one embodiment of the PCBA board test system.
In a specific embodiment, the number of the switch boards is 4, the number of the control switches is three, the switch boards include control switches 1, control switches 2 and control switches 3, and the number of the main control boards is 4, and the main control boards include main control boards 1, 2, 3 and 4. The control terminal is PC (computer) connected with the main processor through USB or network interface, and the main processor is MCU. The PCBA board test structure is provided with a single-core mode, a double-core mode and a four-core mode. The PC sends commands to the MCU through the USB or the network interface, the MCU carries out logic processing and analysis on the received commands, and then controls the closing state of 3 control switches and the working state of 4 main control boards through 7 groups of control buses. The main control board is connected with the switch board through a signal bus, so that the signal transmission is fast, synchronous and free from interference.
When the PC sets the mode as a single-core mode, the MCU closes 3 control switches, carries out logic processing on the command and sends the command to the main control board 1, the signal bus controls the switch boards 1-16 to measure the PCBA board with the maximum test point number reaching 8192, after the measurement is finished, data is transmitted back to the ATM board 1 through the signal bus, the ATM board 1 transmits the data back to the MCU through the control bus for processing, the data is transmitted back to the PC through the USB or the network port after being converted through the MCU, and the PC carries out further processing and display.
When in the dual-core mode, the MCU closes the control switch 1 and the control switch 3, the command is processed and then sent to the main control board 1 and the main control board 3, the switch boards are divided into two groups of switch boards 1-8 and switch boards 9-16, the maximum measurable points of which reach 4096 respectively, the two groups of switch boards collect data of different PCBA boards respectively and then transmit the data back to the main control board 1 and the main control board 3, and the MCU processes the data and then transmits the data back to the PC for further processing and output.
During the quad-core mode, the MCU sets 3 control switches to be in a disconnection mode, processes data and sends the processed data to the ATM boards 1-4, and the development boards are divided into 4 groups at this time and respectively comprise: the switch boards 1-4, 5-8, 9-12 and 13-16, the maximum measurable points of each group reach 2048, the ATM board 1 controls the development board 1-4, the ATM board 2 controls the development board 5-8, the ATM board 3 controls the development board 9-12 and the ATM board 4 controls the development board 13-16, four groups collect the data of four PCBA boards and then transmit the data back to the corresponding ATM board, and the data are processed by the MCU and then transmitted back to the PC end for further processing and output.
In this embodiment, the control terminal sets a specific scoring structure, can flexibly switch the test mode, and transmits the designated command to the PCBA board test structure, after the collected signal is processed by the PCBA board test structure, the signal is returned to the control terminal, and the control terminal processes and outputs the signal.
In this embodiment, the main processor is a core processing part of the PCBA board test structure, receives a command from the control terminal, performs logic processing on the command, controls the working states of the main control board and the control switch, receives data returned by the main control board, processes the data again, and transmits the data to the control terminal through the USB or the network interface for further processing. And after the main control board analyzes the instruction sent by the main processor, each switch board is controlled and detected according to the content acquired by analysis, and the signals acquired by the switch boards are transmitted back to the main processor to wait for further processing of the main processor.
The PCBA board test system of the invention sets the control bus, the signal bus and the bus supplying power to the PCBA board relatively independently, and blocks the mutual interference of the buses.
Compared with the prior art, the invention has the following advantages:
1, the functions are abundant: integrating the function to be tested of a plurality of boards and the point expansion function;
2, the flexibility is high: the serial connection and the parallel connection are flexibly switched, and a plurality of test modes are provided;
3, the lower computer controls the hardware part, so that the software program requirement of the upper computer is reduced, and the running time is saved to a certain extent;
4, the processing speed is high: the signal bus, the control bus, the power line and the like are relatively independent and do not interfere with each other, so that the running speed is improved;
5, the stability is strong, and the efficiency is high: the four-core mode can measure 4 same or different PCBA boards at most simultaneously;
6, the application range is wide: the maximum measurable point number of the single-core mode reaches 8192 points;
7, high integration level and low cost.
Has the advantages that: the PCBA board test system of the invention connects the main processor with the main control board and the control switch respectively, increases or reduces the number of switch boards connected with a single PCBA board through the on-off of the control switch, meets the test of PCBA boards with different points, realizes the test of a plurality of PCBA boards through the selection of the number of the main control boards participating in signal processing, avoids the problem of increasing equipment and workers, reduces the cost and the occupied area, and improves the efficiency of production and management.
Based on the same inventive concept, the present invention further provides a PCBA board testing method, please refer to fig. 5, and fig. 5 is a flowchart of an embodiment of the PCBA board testing method of the present invention. The PCBA board test method of the present invention will be described with reference to fig. 5.
In this embodiment, the PCBA board test method includes:
s101: and the main processor receives an instruction input by the control terminal and acquires on-off information of the control switch according to the instruction.
S102: and controlling the corresponding control switches to be switched on or switched off according to the on-off information so as to increase or reduce the number of switch boards connected with a single PCBA board, wherein two ends of each control switch are respectively connected with a group of switch boards, and the switch boards supply power to the PCBA board and collect signals of the PCBA board.
S103: and receiving signals transmitted by the main control board and forwarding the signals to the control terminal, wherein the signals are signals of the switch boards correspondingly connected with the main control board.
The specific implementation flow and related embodiments of the PCBA board testing method have been described in the above embodiments, and are not described in detail herein.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A PCBA board test structure, comprising: the main processor is respectively connected with the main control boards and the control switches, and controls the on-off of the control switches and determines the number of the main control boards for processing signals according to instructions input by a control terminal;
the switch board is connected with the PCBA, power is supplied to the PCBA through the switch board, signals of the PCBA are collected, the switch board is connected with the main control board in a one-to-one correspondence mode, and the main processor processes the signals collected by the switch board through the main control board;
two ends of each control switch are respectively connected with a group of switch boards, and the number of the switch boards connected by the PCBA board is increased or decreased by closing or opening the control switches.
2. A PCBA board test structure as claimed in claim 1, wherein the number of control switches is less than the number of groups of switch boards, and the switch board portions to which each control switch is connected are the same or completely different.
3. The PCBA board test structure of claim 2, wherein the number of control switches is 3, and the number of switch boards is 4 groups.
4. A PCBA board test structure as claimed in claim 3, wherein the PCBA board test structure further comprises a signal bus, the master board being connected to the switch board by the signal bus.
5. A PCBA board test structure as claimed in claim 1, wherein the PCBA board test structure further comprises a control bus, the host processor being connected to the control switch, the master board, via a different control bus.
6. A PCBA board test system is characterized in that the PCBA board test system comprises a control terminal and a PCBA board test structure, wherein the control terminal is connected with the PCBA board test structure, and a PCBA board is tested through the PCBA board test structure;
the PCBA board test structure comprises a main processor, at least two main control boards, a control switch and at least two groups of switch boards, wherein the main processor is respectively connected with the main control boards and the control switch, and controls the on-off of the control switch and determines the number of the main control boards for processing signals according to an instruction input by a control terminal;
the switch board is connected with the PCBA, power is supplied to the PCBA through the switch board, signals of the PCBA are collected, the switch board is connected with the main control board in a one-to-one correspondence mode, and the main processor processes the signals collected by the switch board through the main control board;
each control switch is connected with two groups of switch boards, and the number of the switch boards connected by the PCBA board is increased or decreased by closing or opening the control switches.
7. The PCBA board test system as in claim 6, wherein the number of control switches is less than the number of groups of switch boards, and the switch board portions to which each control switch connects are the same or completely different.
8. The PCBA board test system as in claim 7, wherein the number of control switches is 3, and the number of switch boards is 4 groups.
9. A PCBA board test system as claimed in claim 8, wherein the PCBA board test structure further comprises a signal bus, the master board being connected to the switch board by the signal bus.
10. A PCBA board test method is characterized by comprising the following steps:
s101: the main processor receives an instruction input by the control terminal and acquires on-off information of the control switch according to the instruction;
s102: controlling the corresponding control switches to be switched on or switched off according to the on-off information so as to increase or decrease the number of switch boards connected with a single PCBA, wherein two ends of each control switch are respectively connected with a group of switch boards, and the switch boards supply power to the PCBA and collect signals of the PCBA;
s103: and receiving signals transmitted by the main control board, and forwarding the signals to the control terminal, wherein the signals are acquired by the switch board correspondingly connected with the main control board.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011634900.3A CN112731115B (en) | 2020-12-31 | 2020-12-31 | PCBA board test structure, system and PCBA board test method |
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| CN202011634900.3A CN112731115B (en) | 2020-12-31 | 2020-12-31 | PCBA board test structure, system and PCBA board test method |
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| CN112731115A true CN112731115A (en) | 2021-04-30 |
| CN112731115B CN112731115B (en) | 2023-07-04 |
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| CN113358902A (en) * | 2021-06-08 | 2021-09-07 | 广东利扬芯片测试股份有限公司 | Signal adapter plate, chip testing device and testing method |
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