PCBA test system and test method

Abstract

The invention relates to the technical field of test tools, and provides a PCBA test system and a test method. The PCBA test system comprises a device main body which is provided with a test station for placing a PCBA; the device main body comprises a fixed side and a movable side; and the lifting mechanism is mounted on the movable side of the device main body and is used for changing the height of the movable side of the device main body, so that the PCBA on the test station is switched between a horizontal state and an inclined state. According to the PCBA test system provided by the invention, the problems of high labor intensity and low detection efficiency of manual PCBA test in the prior art can be effectively solved, the efficiency and accuracy of PCBA test are improved, and the factory cost of PCBA is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of test tooling, in particular to a PCBA test system and a test method. BACKGROUND

[0002] At present, PCBA needs to pass through the test of simulating the use scene before being installed into the device to ensure qualification, but the existing test method in the industry has obvious defects. This kind of method relies on manual operation, and the worker needs to manually take the PCBA, and uses sensors, ammeters and other devices to complete various parameter detection. For example, in the angle sensor tilt detection, the worker needs to manually lift one end of the PCBA or its clamping device to simulate the tilt scene. The whole operation process is complicated, the steps are scattered and highly repetitive, which leads to high labor intensity of the worker; the low efficiency of manual operation cannot meet the needs of large-scale production, which restricts the improvement of production capacity; at the same time, the lack of automatic control makes it difficult to guarantee the consistency and stability of the detection process, and the reliability of the detection result is easily affected by the differences in human operation; in addition, the continuous investment in labor cost and the time loss caused by low efficiency directly increases the cost of products leaving the factory, which is not conducive to improving the market competitiveness of products. SUMMARY

[0003] The present application provides a PCBA test system to solve the problems of high labor intensity and low detection efficiency of manual PCBA test in the prior art, improve the efficiency and accuracy of PCBA test, and reduce the cost of PCBA leaving the factory.

[0004] The present application also provides a PCBA test method.

[0005] According to the PCBA test system of the first aspect of the present application, the PCBA test system comprises: a device main body provided with a test station for placing a PCBA; the device main body comprises a fixed side and a movable side; a lifting mechanism installed on the movable side of the device main body, used to change the height of the movable side of the device main body, so that the PCBA on the test station is switched between a horizontal state and an inclined state.

[0006] According to an embodiment of the present application, the lifting mechanism comprises: a first driving assembly fixedly installed on the device main body and provided with a first piston rod that can be extended and retracted; a sliding assembly used to slide on a support table and connected to the lower end of the first piston rod; when the first piston rod of the first driving assembly is extended and retracted, the sliding assembly is synchronously slid on the support table to change the height of the movable side of the device main body.

[0007] According to an embodiment of the present application, the sliding assembly comprises a pulley; or The support table is provided with a sliding rail, and the sliding assembly comprises: A fixed block is connected to the lower end of the first piston rod; A rotating shaft is installed on the fixed block; A sliding block is rotatably connected to the fixed block through the rotating shaft, and the sliding block is used to cooperate with the sliding rail.

[0008] According to one embodiment of the present application, the PCBA testing system further comprises a pressing mechanism, which comprises: A second driving assembly is fixedly installed on the device body and is provided with a telescopic second piston rod; A pressing plate is connected to the lower end of the second piston rod; the pressing plate is used to press against and press down the PCBA.

[0009] According to one embodiment of the present application, a test tray is installed on the device body, and a lower recess is provided on the test tray to form a test station for placing the PCBA; The test tray can move up and down along the height direction on the device body.

[0010] According to one embodiment of the present application, a test hole is provided in the lower recess of the test tray and penetrates along the height direction; A test probe is installed on the device body, the test probe is installed below the test tray, and the test probe penetrates through the test hole and contacts the lower surface of the PCBA when the test tray moves downward.

[0011] According to one embodiment of the present application, the PCBA testing system further comprises a magnetic field adjusting mechanism, which comprises: A third driving assembly is installed on the pressing plate and is provided with a telescopic third piston rod; A fourth driving assembly is connected to the third piston rod and moves with the third piston rod, and is provided with a rotatable rotating rod; A rotating plate is installed at the lower end of the rotating rod; A magnetic element is installed at a non-circular center position of the rotating plate.

[0012] According to one embodiment of the present application, the lifting mechanism, the pressing mechanism, the test tray and the magnetic field adjusting mechanism are correspondingly provided in multiple numbers along the direction from the fixed side to the movable side of the device body.

[0013] According to one embodiment of the present application, the PCBA testing system further comprises a base, one side of the base is rotatably connected to the movable side of the device body, and the other side is used to abut and support the fixed side of the device body. The other side of the base further extends to form a protruding area, and an upper surface of the protruding area forms the support table.

[0014] According to the PCBA testing method of the second aspect of the application, the PCBA testing method adopts the PCBA testing system, the PCBA testing system comprises a pressing mechanism, a magnetic field adjusting mechanism and a lifting mechanism, and comprises the following steps: The pressing mechanism is actuated to move the PCBA downward and make the PCBA contact with test probes on the device body, and the current value and the voltage value of the PCBA are detected by the test probes; The magnetic field adjusting mechanism is actuated to rotate the magnetic part, and data of the Hall element on the PCBA are acquired and analyzed; The lifting mechanism is actuated to lift the movable side of the device body, and data of the angle sensor on the PCBA are acquired and analyzed.

[0015] The one or more technical solutions in the embodiments of the application have at least one of the following technical effects: The PCBA testing system in the application can realize automatic testing of the PCBA, the inclination angle of the device body can be adjusted by the lifting mechanism, when the PCBA is in a horizontal state, other types of tests (such as magnetic sensing test, current and voltage test, electromagnetic lock test, etc.) can be normally performed; when the PCBA is in an inclined state, the inclination test of the PCBA can be performed, the data of the inclination sensor on the PCBA are read and whether the data are correct is verified, that is, the inclination test item of the PCBA can be realized. The PCBA testing system in the application integrates the inclination test item while other test items can be performed, without the need for an operator to hold the PCBA (or the clamping device of the PCBA) to be inclined, the labor intensity of the operator is greatly reduced, and the automation degree and the detection efficiency of the PCBA detection are improved.

[0016] Additional aspects and advantages of the application will be set forth in part in the following description, will become apparent to those skilled in the art from the following description, or will be learned from practicing the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, without creative labor, other drawings can also be obtained from these drawings.

[0018] Figure 1 is a structural schematic diagram of the PCBA testing system provided by the application Figure 1 (PCBA is in a horizontal state).

[0019] Figure 2 is a structural schematic diagram of the PCBA test system provided by the present application Figure 2 (PCBA is in a horizontal state).

[0020] Figure 3 is a structural schematic diagram of the PCBA test system provided by the present application Figure 3 (PCBA is in an inclined state).

[0021] Figure 4 is a structural schematic diagram of the magnetic field adjusting mechanism provided by the present application.

[0022] Figure 5 is a flowchart of the PCBA test method provided by the present application.

[0023] Figure 6 is a schematic diagram of the control circuit of the PCBA test system provided by the present application.

[0024] Figure 7 is a schematic diagram of the modular connection of the PCBA test system provided by the present application.

[0025] Reference signs: 1, device main body; 11, fixed side; 12, movable side; 13, tool box; 131, support table; 132, slide rail; 133, test probe; 134, straight light circle; 135, spring column; 136, first self-resetting button; 137, second self-resetting button; 138, radio frequency card slot; 139, second straight bearing; 14, tool support; 141, fixed boss; 142, ammeter; 143, voltmeter; 144, audible and visual alarm; 15, test tray; 151, test station; 152, test hole; 153, cylindrical pin; 16, rotating shaft; 2, lifting mechanism; 21, first driving assembly; 211, first piston rod; 22, sliding assembly; 221, fixed block; 222, rotating shaft; 223, sliding block; 3, pressing mechanism; 31, second driving assembly; 311, second piston rod; 32, pressing plate; 321, pressing rod; 322, cylinder; 323, first straight bearing; 324, square groove; 325, code scanner; 33, fixed connection block; 4, magnetic field adjusting mechanism; 41, third driving assembly; 411, straight light axis; 412, spring; 413, movable plate; 414, fixed plate; 42, fourth driving assembly; 421, rotating rod; 43, rotating plate; 44, magnetic member; 5, base; 51, protruding area; 511, blocking plate. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0027] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0029] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0030] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0031] In the existing PCBA testing method, in addition to the disadvantage of manually lifting the PCBA or one end of the clamping device thereof to simulate the inclined scene, it is often necessary to hold a magnet to change the distance from the Hall element to test the Hall magnetic induction, repeatedly plug in and pull out the RF card to verify the MCU card reading information and open the electromagnetic lock. The whole testing operation process is complicated, labor-intensive, low in efficiency and lacks automatic control.

[0032] According to the PCBA testing system in the first aspect of the present application, as shown in Figure 1 and Figure 2 , the PCBA testing system comprises: a device main body 1 provided with a test station 151 for placing a PCBA; the device main body 1 comprises a fixed side 11 and a movable side 12; a lifting mechanism 2 is installed on the movable side 12 of the device main body 1 to change the height of the movable side 12 of the device main body 1, so as to switch the PCBA on the test station 151 between the horizontal state and the inclined state. PCBA (Printed Circuit Board Assembly) refers to an electronic component fixed on a PCB according to a predetermined circuit diagram to form a circuit board assembly.

[0033] The device main body 1 comprises a tool support 14 and a tool box 13.

[0034] It should be noted that the PCBA testing system in the present application can also comprise a host computer, which is connected to the control module in the device main body 1, and the host computer identifies whether the acquired data is correct, controls the action of the relay, etc. The control module is connected downward to a relay board, and the relay board is installed with 8 relays, which are respectively connected to the brake element control device main body 1 to control the action of the device main body 1. At the same time, an ammeter 142 and a voltmeter 143 are installed on the device main body 1, and the ammeter 142 and the voltmeter 143 are connected to the host computer through a serial port in an upward direction, and the data acquisition line of the ammeter 142 and the voltmeter 143 is connected to the tail of the PCBA testing probe 133. The host computer controls the 8 relays to act in sequence according to the set test program flow through the control module, and automatically completes the detection of each function of the PCBA. The device main body 1 can also be integrated with a detection mechanism for other conventional detection items.

[0035] The PCBA test system adjusts the height of the movable side 12 of the device main body 1 through the lifting mechanism 2, so that the PCBA can be flexibly switched between the horizontal state and the inclined state, effectively improving the automation level of the test process. When the PCBA is in the horizontal state, various types of test items such as magnetic induction test, current and voltage test, electromagnetic lock test, etc. can be smoothly carried out, without the need to transfer the PCBA to other test equipment, significantly reducing the transfer link in the test process, avoiding the risk of PCBA damage caused by transfer, and also saving the time consumed by transfer, improving the overall test efficiency. When the inclination test is needed, the height of the movable side 12 is adjusted through the lifting mechanism 2, so that the PCBA is in the inclined state, the data of the inclination sensor on the PCBA can be read and its correctness can be verified, and the whole process does not need the operator to hold the PCBA or its clamping device to perform the inclination operation, not only reducing the labor intensity of the operator, but also avoiding the angle deviation caused by manual operation, thereby improving the accuracy and consistency of the inclination test.

[0036] The PCBA test system can adapt to the test requirements of PCBA of different specifications and types, has strong universality and flexibility, and does not need to design test devices for different PCBAs, reducing the equipment investment cost. At the same time, the automatic test process facilitates the automatic recording and analysis of test data, providing a convenient condition for product quality traceability, helping to timely find and solve problems in the test process, and improving the product qualification rate. Moreover, integrating various test items in the same system improves the utilization rate of the test site, without the need to divide separate operation areas for different test items, saving production space.

[0037] Exemplarily, the device main body 1 can not only integrate detection mechanisms for other conventional detection items, but also further increase the environmental simulation test function. The temperature and humidity adjustment module is integrated on the device main body 1, so that the PCBA can be tested under different temperature and humidity environments, simulate various extreme use scenarios, and further improve the comprehensiveness of the test.

[0038] According to one embodiment of the present application, as Figure 3 shown, the lifting mechanism 2 includes: a first driving assembly 21 fixedly installed on the device main body 1 and provided with a first piston rod 211 that can be extended and retracted; a sliding assembly 22 connected to the lower end of the first piston rod 211 for sliding on the support table 131; when the first piston rod 211 of the first driving assembly 21 is extended and retracted, the sliding assembly 22 synchronously slides on the support table 131 to change the height of the movable side 12 of the device main body 1.

[0039] The combination of the first driving assembly 21 extending in the height direction and the sliding assembly 22 sliding in the horizontal direction, through the cooperation of the two movements, naturally forms the circular arc of the movement track of the movable side 12 of the device main body 1 rotating around the fixed side 11, and fundamentally solves the problem of the single lifting mechanism 2 being forced to move linearly and not matching the rotation requirement of the device main body 1, thereby causing the device to jam.

[0040] When the device main body 1 rotates around the fixed side 11, the actual displacement of the movable side 12 is a compound movement with height change and horizontal displacement. If only the single lifting mechanism 2 is relied on to drive linearly, additional radial force will be generated due to the rigidity conflict of the movement track, causing the mechanism to jam, wear to be aggravated, and even the movement to fail. The horizontal sliding of the sliding assembly 22 can compensate for the horizontal displacement requirement of the movable side 12 when rotating in real time, and the height extension of the first driving assembly 21 can simultaneously satisfy the displacement change in the vertical direction, so that the two form a dynamically adaptive movement coupling, and the movable side 12 moves smoothly along the circular arc track, ensuring that the device main body 1 switches between the horizontal and inclined states without jamming and without jerking.

[0041] The above-mentioned movement cooperation design can effectively disperse mechanical stress. In the forced driving rotation of the single lifting mechanism 2, the stress is concentrated at the connection point, which is easy to cause the deformation of the part or the loosening of the connection. In the combined structure, the height extension and the horizontal sliding bear the load in the vertical and horizontal directions respectively, so that the stress is uniformly distributed at the connection parts of the first driving assembly 21, the sliding assembly 22 and the device main body 1, thereby reducing the bearing pressure of the local structure, prolonging the fatigue life of the mechanism, and reducing the maintenance frequency.

[0042] The realization of the circular arc track makes the change of the inclination angle of the movable side 12 more continuous and controllable, avoids the angle jump caused by jamming, and provides a stable physical reference for the inclination sensor test. At the same time, this design has lower requirements for the structural strength of the device main body 1, and does not need to additionally strengthen the connection parts to resist the radial force of the single lifting mechanism 2, thereby reducing the overall weight of the device and the manufacturing cost.

[0043] The above-mentioned combined structure of the first driving assembly 21 and the sliding assembly 22 can adapt to device main bodies 1 of different weights. When the sliding assembly 22 slides horizontally on the support table 131, the sliding assembly 22 can provide a certain supporting force to support the device main body 1 to rotate and lift, so that the movable side 12 can still rotate smoothly in the heavy load state or for a heavier device main body 1.

[0044] According to one embodiment of the present application, the sliding assembly 22 comprises a pulley (not shown in the figure); or, as shown in FIG. 2, the sliding assembly 22 comprises a sliding rail 221 and a sliding block 222. Figure 2As shown, the support table 131 is provided with a sliding rail 132, and the sliding assembly 22 includes: a fixed block 221 connected to the lower end of the first piston rod 211; a rotating shaft 222 installed on the fixed block 221; and a sliding block 223 rotationally connected to the fixed block 221 through the rotating shaft 222 and configured to cooperate with the sliding rail 132. Both of the two structural designs of the sliding assembly 22 are optimized in the horizontal sliding mode, and are coordinated with the height extension of the first driving assembly 21, thereby further ensuring the smooth movement of the movable side 12 of the device main body 1 along the circular arc track.

[0045] The end of the sliding rail 132 away from the tool box 13 is provided with a blocking plate 511 to limit the sliding block 223 from sliding out of the sliding rail 132.

[0046] When the sliding assembly 22 includes a pulley, a fixed block can be further added, i.e., the fixed block is combined with the pulley, wherein the pulley directly contacts the support table 131, thereby reducing the horizontal movement resistance, enabling the sliding assembly 22 to quickly respond to the horizontal displacement requirement when the first piston rod 211 is extended or retracted, reducing the movement lag caused by excessive friction, and ensuring that the movable side 12 does not jam during rotation. At the same time, the pulley structure is simple, easy to install and maintain, and has a low requirement for the flatness of the support table 131. Even if the table has minor flaws, it can still smoothly transition through the pulley rolling, and adapt to different working environments. In some cases, the pulley can also be in the form of a bull's eye wheel.

[0047] When the support table 131 is provided with the sliding rail 132, and the sliding assembly 22 is combined with the fixed block 221, the rotating shaft 222 and the sliding block 223, the cooperation between the sliding block 223 and the sliding rail 132 forms directional constraint, making the horizontal sliding track more accurate and avoiding the possible deviation of the pulley, thereby improving the guidance of movement. The design of the rotating shaft 222 allows the sliding block 223 to rotate relative to the fixed block 221, which can adapt to the angle change between the sliding rail 132 and the sliding block 223 in real time when the device main body 1 rotates, eliminate the lateral force caused by trajectory deviation, reduce the rigid collision between the sliding block 223 and the sliding rail 132, and reduce the wear of the components. This structure is more suitable for high-load scenarios, as the contact area between the sliding block 223 and the sliding rail 132 is larger, which can disperse the pressure and avoid deformation caused by local stress concentration, making it suitable for testing heavier PCBA or clamping devices.

[0048] The combination of the sliding rail 132 and the sliding block 223 limits directional sliding, making the matching between the horizontal displacement and the extension amount of the first piston rod 211 more accurate, and cooperating with the angle compensation of the rotating shaft 222, which can ensure the position stability of the movable side 12 at any inclination angle, and provide a more reliable physical reference for the inclination sensor test.

[0049] In some cases, a guide groove can be added inside the slide rail 132, and the flanges on both sides of the sliding block 223 are embedded in the groove to form a bidirectional constraint to prevent the sliding block 223 from coming off the slide rail 132, which is particularly suitable for high-frequency and long-stroke test scenarios.

[0050] According to one embodiment of the present application, as shown in Figure 1 and Figure 2 The PCBA testing system further comprises a pressing mechanism 3, which comprises a second driving assembly 31 fixedly installed on the device main body 1 and provided with a second piston rod 311 that can be extended and retracted, and a pressing plate 32 connected to the lower end of the second piston rod 311. The pressing plate 32 is used to press against and press down the PCBA. In actual application, the pressing plate 32 can be connected to the lower end of the second piston rod 311 through a fixed connecting block 33.

[0051] The tool support 14 is provided with a front fixed boss 141, the fixed boss 141 is installed with a cylinder (i.e., the second driving assembly 31), the lower end of the cylinder is movably installed with the fixed connecting block 33, the fixed connecting block 33 is installed with the pressing plate 32, the lower surface of the pressing plate 32 is installed with a pressing rod 321 and a cylinder 322, and the pressing plate 32 is further installed with a first linear bearing 323 in a penetrating manner, the inside of the first linear bearing 323 is installed with a linear light circle 134, and the linear light circle 134 is installed on the tool box 13.

[0052] The pressing mechanism 3 drives the second piston rod 311 to extend and retract through the second driving assembly 31, so that the pressing plate 32 presses against and presses down the PCBA, thereby providing a stable fixing effect for the PCBA testing process. In the horizontal state, stable fixing can prevent the PCBA from being in poor contact with the test interface (such as a probe or a terminal), reduce test data fluctuations or misjudgments caused by contact problems, and improve the reliability of the test results.

[0053] The second driving assembly 31 is fixedly installed on the device main body 1, so that the relative position between the force application point of the pressing action and the stress point of the PCBA is fixed, thereby ensuring that the pressure distribution of each pressing is uniform. Compared with manual pressing (which is prone to cause excessive local stress or poor fixing of the PCBA due to uneven force), the second driving assembly 31 can set an appropriate pressing force according to the parameters such as the material and thickness of the PCBA (for example, the gas flow size, i.e., the cylinder pressure, can be controlled by adjusting the cylinder throttle valve), which not only avoids fixing failure caused by insufficient pressure, but also prevents PCBA deformation and component damage caused by excessive pressure, and has wide adaptability to different specifications of PCBA.

[0054] The second driving assembly 31 can be linked with the lifting mechanism 2, a test sensor and the like. For example, when the PCBA is placed on the test station 151, the system can automatically trigger the second driving assembly 31 to act, so that the pressing plate 32 presses and fixes the PCBA, and then the lifting mechanism 2 starts to adjust the angle, and the test module starts to detect synchronously. After the test is completed, the second driving assembly 31 drives the pressing plate 32 to automatically lift and release the PCBA. The whole process does not need manual intervention, reduces the connection time of the operation link, reduces the labor intensity of manual operation, and significantly improves the test efficiency. Moreover, the automatic control mode can ensure that the fixing force and the pressing time of each test are completely consistent, provides standardized conditions for the test of different batches of PCBAs, and facilitates the statistical analysis of test data and quality tracing.

[0055] The pressing mechanism 3 has a compact structure, which provides convenience for system integration. The combination of the second driving assembly 31 and the pressing plate 32 has a small volume and can be flexibly arranged above the test station 151 of the device main body 1, without causing space interference with the lifting mechanism 2 and other test components, so that the layout of the whole PCBA test system is more reasonable, the occupied space of the equipment is saved, and a structural basis is reserved for subsequent functional expansion.

[0056] In some special cases (for example, the rotation angle of the PCBA is large, and the test station 151 is not provided with a fixing structure for the PCBA), when the device main body 1 is adjusted to the inclined state by the lifting mechanism 2, the pressing action of the pressing plate 32 can firmly constrain the PCBA on the test station 151, so as to avoid the position deviation of the PCBA during the angle change process, and ensure that the test items such as the inclination sensor can obtain accurate data based on a stable physical reference.

[0057] According to one embodiment of the present application, as shown in Figure 2 The device main body 1 is provided with a test tray 15, and the test tray 15 is provided with a lower concave area to form a test station 151 for placing the PCBA. The test tray 15 can move up and down along the height direction on the device main body 1.

[0058] The lower concave area on the test tray 15 forms a test station 151 for placing the PCBA. The lower concave structure can effectively limit the horizontal displacement of the PCBA during the test process, avoid the position deviation of the PCBA caused by the inclination, movement or slight vibration of the device main body 1, and ensure that the PCBA and various detection elements (such as sensors, probes and the like) in the test system always keep accurate alignment, thereby providing a structural basis for the accuracy of test data. At the same time, the form of the lower concave area can be adaptively designed according to the size of the PCBA, so that different specifications of the PCBA can be stably placed, and the adaptation ability of the test station 151 to diversified products is enhanced.

[0059] The test tray 15 can be moved up and down along the height direction on the device body 1, further improving the operation flexibility and compatibility of the system.

[0060] In some cases, a resilient buffer layer can be provided in the lower recessed area of the test tray 15 to absorb impact forces during placement or testing through the buffer material, avoiding damage caused by rigid contact between the PCBA and the tray.

[0061] In some cases, the lower recessed area of the test tray 15 can be improved to expand the adaptation range of the test station 151, and the test interface and positioning components can be quickly replaced, so that the system can be compatible with more PCBAs with different pin distributions and sizes, and the application ability of the system is enhanced.

[0062] According to one embodiment of the present application, as shown in Figure 2 The lower recessed area of the test tray 15 is provided with a test hole 152 penetrating along the height direction; the device body 1 is provided with a test probe 133, the test probe 133 is installed below the test tray 15, and the test tray 15 is moved downward to make the test probe 133 contact the lower surface of the PCBA through the test hole 152. Alternatively, in some cases, the test probe 133 can be provided on the lower surface of the pressing plate 32, and the test probe 133 descends with the pressing plate 32 and contacts the upper surface of the PCBA. The following is described by taking the example of "the test probe 133 being installed on the upper surface of the device body 1 (the tooling box 13)".

[0063] The probe 133, the tail of the test probe 133 is connected to the test circuit and the ammeter 142 and the voltmeter 143 installed on the upper surface of the tooling box 13; the spring column 135 and the second linear bearing 139 are installed on the upper surface of the tooling box 13 (the area around the test probe 133), the second linear bearing 139 is inserted and matched with the cylindrical pin 153, the upper end of the cylindrical pin 153 is installed on the bottom of the test tray 15, the test tray 15 is located in the upper area of the test probe 133, the test hole 152 is provided in the area of the test tray 15 directly above the test probe 133; the first self-resetting button 136 is installed on the upper surface of the tooling box 13, and the first self-resetting button 136 is coaxially corresponding to the cylindrical pin 322 directly above.

[0064] The four corners of the test tray 15 are provided with cylindrical pins 153 to limit the position of the test tray 15 relative to the tool box 13 (limiting the horizontal position of the test tray), and when the outer size of the PCBA changes, only the test tray 15 and the cylindrical pins 153 with the same size are needed to replace the original test tray assembly to be compatible with different PCBA tests; the spring column 135 is installed on the upper surface of the tool box 13, i.e., directly below the test tray 15, and has a stroke of 10 mm and is installed on the upper surface of the tool box 13, and the upper end of the spring column 135 supports the lower surface of the test tray 15; when the pressing plate 32 is installed and the pressing rod 321 is pressed against the PCBA and the test tray 15, the spring column 135 is retracted, and at this time, the lower surface of the test tray 15 is close to the upper surface of the tool box 13, and the test points of the PCBA are pressed against the test probes 133 through the test holes 152. When the test system is in a non-test state, the second piston rod 311 of the second driving assembly 31 is in a retracted state, and the distance between the lower end of the pressing rod 321 of the pressing plate 32 and the upper surface of the test tray 15 is sufficient for an operator to place and remove the PCBA, Figure 1 The right side of the test tray 15 (i.e., the raised test position) is in a state of removing the test tray 15, so that the replacement method of the test tray 15 and the installation method of the test probes 133 and the spring column 135 can be clearly seen; Figure 1 、 Figure 2 and Figure 3 The left side of the test tray 15 (i.e., the lower test position) is in a state of removing the test tray 15, so that the replacement method of the test tray 15 and the installation method of the test probes 133 and the spring column 135 can be clearly seen;

[0065] The test holes 152 in the lower recessed area of the test tray 15 penetrate in the height direction and form a precise contact structure with the test probes 133 installed on the device main body 1, providing a stable physical connection basis for the electrical performance test (such as current and voltage detection) of the PCBA. The position of the test hole 152 can be accurately designed according to the distribution of the test points on the lower surface of the PCBA, so that the test probes 133 can directly align with the target test points through the test holes 152, avoiding contact failure caused by position deviation and ensuring stable transmission of test signals. The test probes 133 are fixed below the test tray 15, and the contact with the PCBA is achieved through the downward movement of the test tray 15, which can significantly improve the consistency of the contact position and reduce the test errors caused by manual operation compared with manual probe contact. Moreover, the test probes 133 do not need to be moved, and the connecting wires do not need to be moved, which ensures the accuracy of the test results.

[0066] The downward movement of the test tray 15 allows the test probes 133 to pass through the test holes 152 and contact the lower surface of the PCBA. The contact force between the test probes 133 and the PCBA can be precisely adjusted by controlling the downward movement distance of the test tray. Excessive contact force can cause damage to the PCBA or the test probes 133, while insufficient contact force can cause poor contact. The controllable downward movement of the test tray can stabilize the contact force within a reasonable range, ensuring the reliability of the electrical connection and avoiding physical damage to the PCBA, especially in scenarios where the PCBA has fragile solder joints or dense precision components.

[0067] This structural design also cooperates with the height adjustment function of the test tray 15. During the non-testing phase, the test tray 15 is at a higher position, keeping the test probes 133 separated from the PCBA to avoid oxidation or contamination caused by long-term contact. When entering the testing phase, the test tray moves downward to bring the PCBA close to the test probes 133 and completes the contact. The entire process does not require manual insertion and removal of the test probes 133, reducing manual intervention in the testing process and seamlessly integrating with the automated control process, thereby improving testing efficiency. Meanwhile, the through design of the test holes 152 does not affect the limiting effect of the recessed area on the PCBA, and the PCBA can maintain a stable horizontal position during testing, ensuring that the contact point does not shift during testing.

[0068] The number and distribution of the test holes 152 can be flexibly designed according to the testing needs of different PCBAs. The test probes 133 are fixedly installed on the device main body 1, which reduces the loosening or positioning deviation of the test probes 133 caused by frequent movement, prolongs the service life of the test probes 133, and reduces maintenance costs. Moreover, the compact cooperation structure of the test holes 152 and the test probes 133 does not occupy the limiting space of the recessed area, allowing the test tray 15 to achieve both limiting and electrical connection functions, simplifying the overall structural design.

[0069] In some cases, a guide slope can be provided on the inner wall of the test hole 152 to automatically correct slight positional deviations of the test probes 133 when passing through the test hole 152, further improving contact accuracy. Additionally, a spring or other elastic buffer component can be added to the bottom of the test probes 133. When the downward pressure of the test tray 15 is too large, the buffer component can absorb the excess pressure through deformation, forming a double protection mechanism to prevent damage caused by rigid contact.

[0070] According to one embodiment of the present application, as Figure 1 and Figure 4As shown, the PCBA test system further comprises a magnetic field adjusting mechanism 4, which comprises: a third driving assembly 41 mounted on the pressing plate 32 and provided with a third piston rod that can be extended and retracted; a fourth driving assembly 42 connected with the third piston rod and moving along with the third piston rod, and provided with a rotating rod 421 that can rotate; a rotating plate 43 mounted on the lower end of the rotating rod 421; and a magnetic piece 44 mounted at a non-central position of the rotating plate 43. Exemplarily, the magnetic piece 44 can be located on the lower surface of the rotating plate 43.

[0071] The magnetic field adjusting mechanism 4 can further comprise other components, exemplarily: four linear optical shafts 411 are centrally mounted on the pressing plate 32, springs 412 are peripherally mounted on the linear optical shafts 411, and a movable plate 413 is mounted between the four linear optical shafts 411; the bottom of the movable plate 413 is mounted with a stepper motor (i.e., the fourth driving assembly 42), the springs 412 are located at the bottom of the movable plate 413, the output rod (i.e., the rotating rod 421) of the stepper motor is mounted with a circular wheel (i.e., the rotating plate 43), the lower surface of the circular wheel is further mounted with the magnetic piece 44, a fixed plate 414 is mounted on the four linear optical shafts 411, a cylindrical cylinder (i.e., the third driving assembly 41) is mounted on the upper surface of the fixed plate 414, and the third piston rod of the cylindrical cylinder is connected with the movable plate 413; the third piston rod of the cylindrical cylinder is electrically driven to push the movable plate 413 downward, the movable plate 413 is connected with the stepper motor and the circular wheel to move downward, the movable plate 413 compresses the springs 412, the stepper motor is electrically driven to rotate, the rotating shaft of the stepper motor drives the coaxial rotation of the circular wheel and the magnetic piece 44, the magnetic piece 44 is rotated to change the distance from the PCBA Hall element, and the PCBA Hall magnetic induction detection is assisted to be completed. When the stepper motor stops rotating, the third piston rod of the cylindrical cylinder is retracted, the springs 412 are extended to push the movable plate 413 to move upward, and the movable plate 413 drives the stepper motor, the circular wheel and the magnetic piece 44 to move upward synchronously to the original position. A square groove 324 is further formed on the pressing plate 32, and the square groove 324 is used for mounting a code scanner 325.

[0072] The magnetic field adjusting mechanism 4 drives the third piston rod to extend and retract through the third driving assembly 41, drives the fourth driving assembly 42 and the rotating plate 43 to move along the height direction in linkage, drives the rotating rod 421 to rotate through the fourth driving assembly 42, drives the rotating plate 43 to rotate, and drives the magnetic piece 44 mounted at the non-central position of the rotating plate 43 to rotate after reaching the preset height position, so as to flexibly adjust the relative position of the magnetic piece 44 and the Hall element on the PCBA, and simulate the magnetic field change state in various practical scenes.

[0073] The installation design of the non-central position of the magnetic piece 44 can change the radius when the magnetic piece 44 rotates, and in combination with the extension and retraction in the height direction, a more complex magnetic field strength gradient and direction change can be formed, covering various test conditions from static magnetic field to dynamic rotating magnetic field, and meeting the test requirements of Hall detection on different magnetic field parameters.

[0074] The extension amount of the third piston rod and the rotation angle of the rotating rod 421 can be accurately controlled by the driving assembly, and the motion parameters of the two can be independently adjusted or cooperated, so that the spatial position control of the magnetic part 44 is more accurate.

[0075] The magnetic field adjusting mechanism 4 has high integration with the device main body 1, the third driving assembly 41 is installed on the pressing plate 32 and can synchronously adjust the overall height with the lifting of the pressing plate 32, so that the relative position of the magnetic field adjusting mechanism 4 and the PCBA is always adapted, the magnetic field adjusting mechanism 4 moves along the height direction together with the pressing plate 32, and the magnetic field adjusting mechanism 4 can also be adjusted along the height direction alone when the pressing plate 32 is stationary.

[0076] The magnetic part 44 can be replaced by components (such as permanent magnets, electromagnetic blocks) with different magnetic strengths or types according to test requirements, the connection mode of the rotating plate 43 and the driving assembly is convenient to disassemble, and when the magnetic part 44 or the driving assembly is worn, the damaged part can be replaced alone, thereby reducing the maintenance cost.

[0077] According to one embodiment of the present application, the lifting mechanism 2, the pressing mechanism 3, the test tray 15 and the magnetic field adjusting mechanism 4 are correspondingly arranged in multiple groups along the direction from the fixed side 11 to the movable side 12 of the device main body 1. Here, multiple means two or more. As shown in FIG. Figures 1 to 3 The above-mentioned mechanisms are correspondingly arranged in two groups.

[0078] The pressing mechanism 3, the test tray 15 and the magnetic field adjusting mechanism 4 are correspondingly arranged in multiple groups along the direction from the fixed side 11 to the movable side 12 of the device main body 1, and multiple independent test units can be formed, so that the parallel test of multiple PCBAs can be realized. Each group of mechanisms can independently and synchronously complete the whole process operation from the positioning of the PCBA, the power-on of the power supply to the detection of each function, thereby avoiding the time loss caused by the one-by-one test of a single group of mechanisms, greatly improving the test quantity per unit time, and being especially suitable for large-scale production scenes.

[0079] Such a layout makes the actions of each group of mechanisms independent of each other, so that when a group of mechanisms fails, the other groups can still operate normally, thereby reducing the risk of overall system downtime and improving production continuity. The linear arrangement of each group of mechanisms along the direction from the fixed side 11 to the movable side 12 also facilitates the orderly taking and placing of the PCBAs by the operators or automatic equipment, thereby reducing the operation errors caused by the layout confusion.

[0080] It is worth noting that the lifting mechanism 2 in the present application is especially suitable for such a layout of multiple groups of mechanisms, and the lifting mechanism 2 only needs to be arranged at the movable side 12 of the device main body 1 and lift the movable side 12 of the device main body 1 to make the PCBAs on the multiple groups of mechanisms all have the same inclination angle, thereby ensuring the consistency of the test results of the groups of PCBAs.

[0081] According to one embodiment of the present application, as shown in Figure 2 The PCBA testing system further includes a base 5 rotatably connected to the movable side 12 of the device body 1 on one side and abuttingly supported by the fixed side 11 of the device body 1 on the other side; the other side of the base 5 further extends to form a protruding area 51, and the upper surface of the protruding area 51 forms a support table 131.

[0082] The base 5 is rotatably connected to the movable side 12 of the device body 1 on one side and abuttingly supported by the fixed side 11 of the device body 1 on the other side, thereby forming stable support for the device body 1. When the device body 1 is in a horizontal state, it can be uniformly supported by the base 5; when the device body 1 is rotated around the fixed side 11 by the lifting mechanism 2, the movable side 12 gradually separates from the base 5.

[0083] The upper surface of the protruding area 51 of the base 5 serves as the support table 131 and provides a flat and fixed movement reference for the sliding assembly 22. The support table 131 is designed in one piece with the base 5, avoiding installation deviations that may occur with independent support structures, ensuring stable trajectory of the sliding assembly 22 when sliding horizontally, and precise cooperation with the height expansion of the first driving assembly 21, further ensuring smooth movement of the movable side 12 of the device body 1 along the circular arc trajectory and reducing the risk of jamming.

[0084] The combination of the rotatable connection and the abutting support of the base 5 uniformly transmits the weight of the device body 1 and the load during the testing process to the ground, reducing the shaking amplitude of the device when it is tilted or running, providing a stable physical reference for various testing items (such as inclination test, magnetic induction test), and reducing the testing errors caused by vibration.

[0085] In some cases, the ground or the platform on which the PCBA testing system is placed can also serve as the support table 131.

[0086] The PCBA testing system provided by the embodiments of the present application is suitable for detecting PCBA before it is shipped, and the PCBA is suitable for a smart remote alarm terminal of a fire hydrant to alarm when illegal water use occurs.

[0087] The tool support 14 is provided with a front-mounted ammeter 142 and a voltmeter 143; the tool box 13 is provided with a front-mounted radio frequency card slot 138, and the radio frequency card slot 138 of the tool box 13 is correspondingly provided with a card reader mounted on the inner side, the card reader is electrically connected to the power supply inside the tool box 13 through the 6th relay of the relay board, and the card reader is also electrically connected to the tail of the test probe 133, and the tail of the test probe 133 is electrically connected to the electromagnetic lock; the tool box 13 is provided with a front-mounted second self-resetting button 137, the second self-resetting button 137 is electrically connected to the power supply inside the tool box 13 and an electromagnetic relay, the electromagnetic relay is electrically connected to the 1st relay of the relay board, and the electromagnetic relay is also electrically connected to the electromagnetic valve of the second driving assembly 31 in parallel.

[0088] The tool support 14 is provided with a front-mounted ammeter 142 and a voltmeter 143; the tool box 13 is provided with a front-mounted radio frequency card slot 138, and the radio frequency card slot 138 of the tool box 13 is correspondingly provided with a card reader mounted on the inner side, the card reader is electrically connected to the power supply inside the tool box 13 through the 6th relay of the relay board, and the card reader is also electrically connected to the tail of the test probe 133, and the tail of the test probe 133 is electrically connected to the electromagnetic lock; the tool box 13 is provided with a front-mounted second self-resetting button 137, the second self-resetting button 137 is electrically connected to the power supply inside the tool box 13 and an electromagnetic relay, the electromagnetic relay is electrically connected to the 1st relay of the relay board, and the electromagnetic relay is also electrically connected to the electromagnetic valve of the second driving assembly 31 in parallel.

[0089] According to the second aspect of the present application, a PCBA test method is provided, which adopts a PCBA test system, the PCBA test system comprises a pressing mechanism 3, a magnetic field adjusting mechanism 4 and a lifting mechanism 2, as shown in the accompanying drawings, and comprises the following steps: Figure 5 The pressing mechanism 3 is actuated to move the PCBA downward and make it contact with the test probe 133 on the device body 1, and the current value and voltage value of the PCBA are detected through the test probe 133; the magnetic field adjusting mechanism 4 is actuated to rotate the magnetic part 44, and the data of the Hall element on the PCBA are acquired and analyzed; and the lifting mechanism 2 is actuated to lift the movable side 12 of the device body 1, and the data of the angle sensor on the PCBA are acquired and analyzed.

[0090] The PCBA test method controls the pressing mechanism 3, the magnetic field adjusting mechanism 4 and the lifting mechanism 2 to act in sequence, forming a coherent automatic test process, which effectively improves the test efficiency and reliability. The pressing mechanism 3 drives the PCBA to contact with the test probe 133 to detect the current value and voltage value, realizing the automatic collection of electrical performance parameters and avoiding poor contact or data deviation caused by manual connection of test equipment; the magnetic field adjusting mechanism 4 drives the magnetic part 44 to rotate, and cooperates with the acquisition and analysis of the Hall element data to accurately verify the magnetic field induction function, and the rotation parameters of the magnetic part 44 can be standardized controlled to ensure consistent test conditions; the lifting mechanism 2 lifts the movable side 12 of the device body 1 to detect the angle sensor data, replacing the manual tilting operation with the precise action of the mechanical structure, eliminating human angle control errors, and making the performance detection under the tilting state more reliable.

[0091] By integrating multiple tests such as electrical performance, magnetic field induction, and angle induction in the same process, the PCBA does not need to be transferred between different devices, reducing transfer time and damage risk. Meanwhile, each step can be pre-set through the program to realize unattended batch testing, greatly reducing labor costs. The automatic acquisition and analysis of test data also provide complete records for quality tracing, facilitating quick problem identification.

[0092] The power supply, control mainboard, relay board, card reader, electromagnetic lock, electromagnetic valve, and electromagnetic relay (KA) are installed inside the tool box 13. The control mainboard is connected to the host computer in an upward direction, and the control mainboard output is connected to the relay board, which integrates 8 relays. The computer host is inserted into the Bluetooth module.

[0093] The power supply is connected to the second self-reset button 137 in the first path. The second self-reset button 137 is connected to the electromagnetic relay (KA), which is connected to the first relay (K1) of the relay board in the normally closed state. The electromagnetic relay (KA) is connected to the electromagnetic valve of the cylinder (i.e., the second driving assembly 31) in parallel.

[0094] The power supply is connected to the first self-reset button 136 in the second path. The first self-reset button 136 is connected to the second relay (K2) of the relay board in the normally closed state. The second relay (K2) is connected to the code scanner 325.

[0095] The power supply is connected to the third relay (K3) of the relay board in the third path in the normally open state. The third relay (K3) is connected to the ammeter 142, and the ammeter 142 is connected to the tail of the test probe 133.

[0096] The power supply is connected to the fourth relay (K4) of the relay board in the fourth path in the normally open state. The fourth relay (K4) is connected to the electromagnetic valve of the cylindrical cylinder (i.e., the third driving assembly 41).

[0097] The power supply is connected to the fifth relay (K5) of the relay board in the fifth path in the normally open state. The fifth relay (K5) is connected to the stepper motor (i.e., the fourth driving assembly 42).

[0098] The power supply is connected to the sixth relay (K6) of the relay board in the sixth path in the normally open state. The sixth relay (K6) is connected to the card reader, which is connected to the tail of the test probe 133, and the tail of the test probe 133 is connected to the electromagnetic lock.

[0099] The power supply is connected to the seventh relay (K7) of the relay board in the seventh path in the normally open state. The seventh relay (K7) is connected to the first driving assembly 21.

[0100] The power supply is connected to the eighth relay (K8) of the relay board in the eighth path in the normally open state. The eighth relay (K8) is connected to the sound and light alarm 144.

[0101] The voltmeter 143 is connected to the tail of the test probe 133.

[0102] The radio frequency card slot 138 is inserted with a user card (a radio frequency card).

[0103] In the specific operation test, the following is a specific example of the operation process: Step 1: Place the PCBA into the test tray 15 and trigger the second self-resetting button 137, the electromagnetic relay (KA) is powered on to control the cylinder (i.e., the second driving assembly 31) to push the pressing plate 32 and the pressing rod 321 to press the PCBA, and the PCBA and the test tray 15 are synchronously moved downward, and the test probe 133 is in contact with the test point of the PCBA through the test hole 152 of the test tray 15; Step 2: The pressing plate 32 is installed with a cylinder 322 to synchronously press the first self-resetting button 136, and the first self-resetting button 136 triggers the code scanner 325 to scan the two-dimensional code of the PCBA; Step 3: After the code scanner 325 successfully scans the code, the host computer is activated, the host computer controls the second relay (K2) to be turned off through the control board, the code scanner 325 is powered off to end the code scanning, and the host computer enters the two-dimensional code data; Step 4: The host computer controls the third relay (K3) to be turned on through the control board, the test probe 133 is powered on to the PCBA, the ammeter 142 displays the current value, the voltmeter 143 displays the voltage value, the computer host Bluetooth module is successfully paired with the PCBA and reads the PCBA address, the host computer enters the PCBA current and voltage data and judges whether it is qualified; if it is qualified, the next process is detected; if it is not qualified, the host computer controls the eighth relay (K8) to be turned on for 5 seconds (the host computer control time can be set according to the needs) through the control board, the sound and light alarm 144 is powered on and emits five “drip, drip, drip, drip, drip” sounds, the host computer controls the eighth relay (K8) to be turned off through the control board, the sound and light alarm 144 stops, the host computer controls the third relay (K3) to be turned off through the control board, the test probe 133 ends the power-on to the PCBA, the host computer controls the first relay (K1) to be turned off through the control board, the cylinder (i.e., the second driving assembly 31) piston rod retracts to lift the pressing plate 32 and the pressing rod 321 and separates from the PCBA, the spring column 135 extends upward to push the test tray 15 to make the PCBA separate from the test probe 133, and the test is ended; Step 5: The host computer controls the fourth relay (K4) to be turned on through the control board, the cylindrical cylinder (i.e., the third driving assembly 41) pushes the movable plate 413 to synchronously drive the motor (i.e., the fourth driving assembly 42), the rotating plate 43, and the permanent magnet (i.e., the magnetic member 44) to move downward, and the movable plate 413 compresses the spring 412; Step 6: The host computer controls the main board to control the 5th relay (K5) to close, the stepper motor (i.e., the fourth driving assembly 42) rotates and drives the rotating plate 43 and the permanent magnet (i.e., the magnetic piece 44) to rotate synchronously, the permanent magnet (i.e., the magnetic piece 44) changes the distance from the PCBA Hall element, and the host computer enters the PCBA Hall magnetic sensing data; Step 7: After the PCBA Hall magnetic sensing detection is completed, the host computer controls the main board to control the 5th relay (K5) to reset and open, and the stepper motor (i.e., the fourth driving assembly 42) stops rotating; the host computer controls the main board to control the 4th relay (K4) to reset and open, the cylindrical cylinder (i.e., the third driving assembly 41) retracts and resets, the spring 412 extends and pushes the movable plate 413, the stepper motor (i.e., the fourth driving assembly 42), the rotating plate 43 and the permanent magnet (i.e., the magnetic piece 44) to move upward and reset, and the host computer determines whether the PCBA Hall magnetic sensing data is qualified; if it is qualified, the next process is detected; if it is not qualified, the host computer controls the main board to control the 8th relay (K8) to close for 5s (the host computer control time can be set according to needs), the audible and visual alarm 144 is energized and emits “drop, drop, drop, drop, drop” 5 sounds, the host computer controls the main board to control the 8th relay (K8) to open, the audible and visual alarm 144 stops, the host computer controls the main board to control the 3rd relay (K3) to open, the test probe 133 ends the power supply to the PCBA, the host computer controls the main board to control the 1st relay (K1) to open, the cylinder (i.e., the second driving assembly 31) piston rod retracts to lift the pressing plate 32 and the pressing rod 321 and separates from the PCBA, the spring column 135 extends upward to push the test tray 15 to make the PCBA separate from the test probe 133, and the test is completed; Step 8: The host computer controls the mainboard to control the 6th relay (K6) to close, the card reader is powered on and reads the user card information and feeds back to the PCBA through the test probe 133, and the PCBA opens the electromagnetic lock through the test probe 133; after the PCBA reads the card and opens the lock detection is completed, the host computer controls the mainboard to control the 6th relay (K6) to reset and disconnect, the card reader is powered off, the PCBA closes the electromagnetic lock through the test probe 133, the host computer enters the PCBA card reading and unlocking detection data and judges whether it is qualified; if it is qualified, the next process detection is carried out, if it is unqualified, the host computer controls the mainboard to control the 8th relay (K8) to close for 5s (the host computer control time can be set according to needs), the sound and light alarm 144 is powered on and emits “drop, drop, drop, drop, drop” 5 sounds, then the host computer controls the mainboard to control the 8th relay (K8) to disconnect, the sound and light alarm 144 stops, the host computer controls the mainboard to control the 3rd relay (K3) to disconnect, the test probe 133 ends the power-on of the PCBA, and the host computer controls the mainboard to control the 1st relay (K1) to disconnect, the cylinder (i.e., the second driving assembly 31) piston rod retracts to lift the pressing plate 32 and the pressing rod 321 and separates from the PCBA, the spring column 135 extends upward to push the test tray 15 to make the PCBA separate from the test probe 133, and the test ends; Step 9: The host computer controls the mainboard to control the 7th relay (K7) to close, the automatic lifting mechanism 2 extends to push the sliding block 223 to move on the slide rail 132, the automatic lifting mechanism 2 lifts one side of the tool box 13 as the fulcrum of the rotating shaft 16 and separates from the base 5, and the host computer enters the PCBA angle sensor data; after the PCBA angle sensor detection is completed, the host computer controls the mainboard to control the 7th relay (K7) to reset and disconnect, the automatic lifting mechanism 2 retracts and resets and pulls the sliding block 223 to move on the slide rail 132 to reset, and the host computer judges whether the PCBA angle sensor detection data is qualified; if it is qualified, the next process detection is carried out, if it is unqualified, the host computer controls the mainboard to control the 8th relay (K8) to close for 5s (the host computer control time can be set according to needs), the sound and light alarm 144 is powered on and emits “drop, drop, drop, drop, drop” 5 sounds, then the host computer controls the mainboard to control the 8th relay (K8) to disconnect, the sound and light alarm 144 stops, the host computer controls the mainboard to control the 3rd relay (K3) to disconnect, the test probe 133 ends the power-on of the PCBA, and the host computer controls the mainboard to control the 1st relay (K1) to disconnect, the cylinder (i.e., the second driving assembly 31) piston rod retracts to lift the pressing plate 32 and the pressing rod 321 and separates from the PCBA, the spring column 135 extends upward to push the test tray 15 to make the PCBA separate from the test probe 133, and the test ends; Step 10: The host computer establishes NB-IOT communication with the PCBA; the host computer establishes GPS positioning detection with the PCBA. The host computer enters and detects NB-IOT communication and GPS positioning information. If it is "qualified", the host computer controls the mainboard to control the 8th relay (K8) to close for 2s (the host computer control time can be set according to needs), the audible and visual alarm 144 is powered on and emits "drop, drop" 2 sounds, then the host computer controls the mainboard to control the 8th relay (K8) to open, the audible and visual alarm 144 stops, the host computer controls the mainboard to control the 3rd relay (K3) to open, the test probe 133 ends the power supply to the PCBA, the host computer controls the mainboard to control the 1st relay (K1) to open, the cylinder (i.e., the second driving assembly 31) piston rod retracts to lift the pressing plate 32 and the pressing rod 321 and separates from the PCBA, the spring column 135 extends upward to push the test tray 15 to make the PCBA separate from the test probe 133, and the whole test process ends. The host computer controls the mainboard to control the 8th relay of the relay board to reset, and each brake component of the tooling resets to the initial state. If it is "unqualified", the host computer controls the mainboard to control the 8th relay (K8) to close for 5s (the host computer control time can be set according to needs), the audible and visual alarm 144 is powered on and emits "drop, drop, drop, drop, drop" 5 sounds, then the host computer controls the mainboard to control the 8th relay (K8) to open, the audible and visual alarm 144 stops, the host computer controls the mainboard to control the 3rd relay (K3) to open, the test probe 133 ends the power supply to the PCBA, the host computer controls the mainboard to control the 1st relay (K1) to open, the cylinder (i.e., the second driving assembly 31) piston rod retracts to lift the pressing plate 32 and the pressing rod 321 and separates from the PCBA, the spring column 135 extends upward to push the test tray 15 to make the PCBA separate from the test probe 133, and the whole test process ends. The host computer controls the mainboard to control the 8th relay of the relay board to reset, and each brake component of the tooling resets to the initial state.

[0104] The test system and the test method provided by the embodiments of the present application realize automatic testing of the PCBA, reduce the labor intensity of the test personnel, improve the product testing efficiency and quality, increase the judgment of the test personnel on the product test result in vision and hearing by controlling the sounding times of the audible and visual alarm 144, and significantly reduce the product manufacturing cost.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the present application, but not to limit the present application. Although the present application is described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present application do not deviate from the spirit and scope of the present application, and should be covered in the scope of claims of the present application.

Claims

1. A PCBA testing system, characterized in that, include: The main body of the device (1) is provided with a test station (151) for placing PCBA; the main body of the device (1) includes a fixed side (11) and a movable side (12). A lifting mechanism (2) is installed on the movable side (12) of the main body (1) of the device to change the height of the movable side (12) of the main body (1) of the device so that the PCBA on the test station (151) can switch between a horizontal state and an inclined state.

2. The PCBA testing system according to claim 1, characterized in that, The lifting mechanism (2) includes: The first drive assembly (21) is fixedly installed on the main body (1) of the device and is provided with a retractable first piston rod (211). The sliding component (22) is used to slide on the support platform (131) and is connected to the lower end of the first piston rod (211); when the first piston rod (211) of the first drive component (21) extends and retracts, the sliding component (22) slides synchronously on the support platform (131) to change the height of the movable side (12) of the main body (1) of the device.

3. The PCBA testing system according to claim 2, characterized in that, The sliding component (22) includes a pulley; or The support platform (131) is provided with a slide rail (132), and the sliding assembly (22) includes: A fixing block (221) is connected to the lower end of the first piston rod (211); A rotating shaft (222) is mounted on the fixed block (221); The slider (223) is rotatably connected to the fixed block (221) via the rotating shaft (222), and the slider (223) is used to cooperate with the slide rail (132).

4. The PCBA testing system according to claim 2, characterized in that, It also includes a pressing mechanism (3), which includes: The second drive assembly (31) is fixedly installed on the main body (1) of the device and is provided with a retractable second piston rod (311). A pressure plate (32) is connected to the lower end of the second piston rod (311); the pressure plate (32) is used to press down on the PCBA.

5. The PCBA testing system according to claim 4, characterized in that, The device body (1) is equipped with a test tray (15), and the test tray (15) is provided with a recessed area to form the test station (151) for placing PCBA. The test tray (15) can move up and down along the height direction on the main body (1) of the device.

6. The PCBA testing system according to claim 5, characterized in that, The test tray (15) has a test hole (152) that runs through the height direction in the recessed area. The device body (1) is equipped with a test probe (133), which is installed below the test tray (15). The test tray (15) moves downward so that the test probe (133) passes through the test hole (152) and contacts the lower surface of the PCBA.

7. The PCBA testing system according to claim 5, characterized in that, It also includes a magnetic field adjustment mechanism (4), which comprises: The third drive assembly (41) is mounted on the pressure plate (32) and is provided with a retractable third piston rod; The fourth drive assembly (42) is connected to the third piston rod and moves with the third piston rod, and is provided with a rotatable rotating rod (421). A rotating plate (43) is installed at the lower end of the rotating rod (421); A magnetic component (44) is installed at a non-central position on the rotating plate (43).

8. The PCBA testing system according to claim 7, characterized in that, Along the direction from the fixed side (11) to the movable side (12) of the main body (1) of the device, the lifting mechanism (2), the pressing mechanism (3), the test tray (15) and the magnetic field adjustment mechanism (4) are respectively configured in multiple ways.

9. The PCBA testing system according to any one of claims 2 to 8, characterized in that, It also includes a base (5), one side of which is rotatably connected to the movable side (12) of the device body (1), and the other side is used to abut against and support the fixed side (11) of the device body (1); The other side of the base (5) also extends to form a protruding area (51), and the upper surface of the protruding area (51) forms the support platform (131).

10. A PCBA testing method, characterized in that, The PCBA testing system includes a pressing mechanism (3), a magnetic field adjustment mechanism (4), and a lifting mechanism (2), and includes the following steps: The pressing mechanism (3) moves, causing the PCBA to move down and come into contact with the test probe (133) on the main body (1) of the device. The current and voltage values ​​of the PCBA are detected by the test probe (133). The magnetic field adjustment mechanism (4) is activated, causing the magnetic component (44) to rotate, thereby acquiring and analyzing the data of the Hall element on the PCBA; The lifting mechanism (2) is activated, causing the movable side (12) of the main body (1) of the device to be raised, and the data of the angle sensor on the PCBA to be acquired and analyzed.

Images