Photoelectric detector power-up test system and method

Abstract

According to the photoelectric detector power-up test system and method provided by the invention, the rotating shaft is controlled to move or turn over in time, so that the funnel locker and the tray are locked and the tray is released. And the position and the angle of the photoelectric detector to be detected are fixed by using a transparent funnel and a longitudinal wave vibrator in the funnel locker. The three-jaw pin spreader is used for spreading the pin of each to-be-detected photoelectric detector to a proper angle, and then the array point contact circuit board and the pins of the to-be-detected photoelectric detectors are controlled to realize point contact. After the array point contact circuit board is in point contact with the pins of the photoelectric detector to be tested, the electric signals are sent to the central controller according to whether the photoelectric detector to be tested normally obtains different electric signals, and then the central controller can automatically obtain the test result of the photoelectric detector to be tested. According to the scheme, the positioning precision of the to-be-detected photoelectric detector is improved, and damage to the pins is reduced.

Description

Technical Field

[0001] The present application relates to the field of intelligent equipment manufacturing technology, and in particular to a photoelectric detector power-up test system and method. Background Art

[0002] Photodetectors are electronic components that belong to the InGaAs semiconductor chip family and are commonly used to detect light energy intensity and achieve photoelectric conversion. Before delivery to customers, packaged semiconductor chips must undergo a 48-hour power-on burn-in process to screen and eliminate defective electronic components. During this screening process, a three-pin photodetector is inserted into the pin header on the circuit board for online monitoring.

[0003] In the current electronics manufacturing industry, the plug-in and unplug detection of photoelectric detectors mainly relies on manual or semi-automatic equipment, which has the following technical bottlenecks:

[0004] Insufficient positioning accuracy: Traditional mechanical fixtures rely on rigid positioning, which makes it difficult to compensate for component tolerances (above ±0.2mm), resulting in a contact failure rate of >5%;

[0005] Pin damage risk: Manual use of mechanical flaring tools can easily cause scratches on the pin surface (roughness Ra>0.8μm), affecting high-frequency signal transmission.

[0006] Therefore, there is still room for improvement in the prior art photoelectric detector plug-in detection solution. Summary of the Invention

[0007] The technical problem to be solved by this application is that in the prior art, there are problems such as low positioning accuracy, easy damage to pins and untimely information feedback during power-on testing of photoelectric detectors, and thus a photoelectric detector power-on testing system and method are provided.

[0008] In a first aspect, the technical solution of the present application provides a photodetector power-up test system, comprising:

[0009] Central control unit;

[0010] A frame, comprising a vertically arranged guide rail and a cover plate on top of the guide rail;

[0011] A material platform for placing a tray, wherein the photoelectric detectors to be tested are arranged in an array form in the tray;

[0012] The funnel locker includes a funnel fixing plate and transparent funnels arranged in an array on the funnel fixing plate, wherein the transparent funnels have the same array form as the photoelectric detectors to be tested, and the height of the transparent funnels is less than the length of the pins of the photoelectric detectors to be tested; a locking hook is provided on the funnel fixing plate, and the locking hook is used to lock the tray when in contact with the tray;

[0013] The motion control module includes a rotating shaft, a motor assembly, and a longitudinal wave vibrator. The motor assembly includes a linear motor and a servo motor. The rotating shaft is arranged on the guide rail via the motor assembly. The linear motor controls the rotating shaft to drive the funnel locker to move along the guide rail under the instruction of the central controller. The servo motor controls the rotating shaft to drive the funnel locker to rotate under the instruction of the central controller. The longitudinal wave vibrator is arranged between the rotating shaft and the funnel locker and vibrates under the instruction of the central controller.

[0014] A three-prong pin expansion module is provided with a plurality of three-prong pin spreaders in the same array as the photoelectric detector to be tested, each of the three-prong pin spreaders is used to spread the pins of the photoelectric detector to be tested to a suitable angle under the instruction of the central controller;

[0015] An array-type point-contact circuit board is provided with an array of elastic contacts, which is in the same form as the pin array of the photoelectric detector to be tested; each elastic contact is in point contact with the corresponding pin of the photoelectric detector to be tested; the array-type point-contact circuit board sends an electrical signal to the central controller, and the electrical signal is used by the central controller to determine the test result of the photoelectric sensor to be tested.

[0016] Preferably, the photodetector power-on test system described in some embodiments further includes:

[0017] The monitoring module includes an X-ray imager and an optical sensor arranged on the guide rail; after the transparent funnel is coupled with the photoelectric detector to be tested, the X-ray imager obtains imaging information of the funnel locker, and the optical sensor determines the coupling completion degree of the transparent funnel and the photoelectric detector to be tested based on the detected imaging information.

[0018] Preferably, the photodetector power-on test system described in some embodiments further includes:

[0019] The transparent funnel includes a positioning funnel and an elastic locking part. The opening of the positioning funnel is larger than the maximum diameter of the photodetector to be tested. The diameter of the elastic locking part is adapted to the maximum diameter of the photodetector to be tested, and the elastic locking part is provided with a pressure feedback element. The pressure feedback element feeds back the pressure value between the photodetector to be tested and the elastic locking part to the central controller.

[0020] Preferably, in some embodiments of the photoelectric detector power-on test system, the inner wall of the elastic locking portion is formed with an inclined surface, and the diameter of the side close to the positioning funnel is larger than the diameter of the side away from the positioning funnel.

[0021] Preferably, in some embodiments of the photoelectric detector power-on test system, a limit block is formed on the material platform, and the limit block is used to limit the position of the tray.

[0022] Preferably, the photodetector power-on test system described in some embodiments further includes:

[0023] A bracket is provided on the cover plate, and a first driving motor is provided inside the bracket;

[0024] A lead screw is provided on the bracket and is driven by the first drive motor to move along the guide rail;

[0025] The array-type point-contact circuit board is arranged at the end of the lead screw and moves along the guide rail under the drive of the lead screw.

[0026] Preferably, the photodetector power-on test system described in some embodiments further includes:

[0027] a second driving motor, disposed inside the bracket;

[0028] A lifting rod, arranged on the bracket and driven by the second driving motor to move along the guide rail;

[0029] A guide plate is provided on the lifting rod and moves along the guide rail under the drive of the lifting rod; the guide plate is provided with guide members in an array, the array form of the guide members being the same as the array form of the transparent funnel, each of the guide members having three guide holes formed therein, each of the guide holes corresponding to a pin of a photoelectric detector to be tested; the top opening size of the guide member is larger than the bottom opening size;

[0030] The sum of the heights of the guide member and the transparent funnel is less than the length of the pin of the photoelectric detector to be tested.

[0031] Preferably, the photodetector power-on test system described in some embodiments further includes:

[0032] The barcode scanner is connected to the central controller, and scans the batch information of the photoelectric detector and sends the scanning result to the central controller.

[0033] In a second aspect, the technical solution of the present application provides a photodetector power-on test method, which is implemented by applying the photodetector power-on test system described in any of the technical solutions of the first aspect, and the method includes the following steps:

[0034] Step 1: After the tray with the photoelectric detector to be tested is placed on the material platform, the central controller controls the servo motor to drive the rotating shaft to drive the funnel lock to rotate so that the opening of the transparent funnel faces the photoelectric detector to be tested; wherein, the pin of the photoelectric detector to be tested faces the direction of the material platform;

[0035] Step 2: The central controller controls the linear motor to drive the rotating shaft to drive the funnel locker to move toward the photoelectric detector to be tested, and the transparent funnel is coupled with the photoelectric detector to be tested in a one-to-one correspondence. Each photoelectric detector to be tested is fixed by a transparent funnel; the central controller controls the locking hook to lock the tray;

[0036] Step 3: After the central controller controls the linear motor to drive the rotating shaft to drive the funnel locker away from the material platform, the central controller controls the servo motor to drive the rotating shaft to drive the funnel locker to rotate so that the transparent funnel opening and the pins of the photoelectric detector to be tested face the top cover;

[0037] Step 4: The central controller starts the longitudinal wave vibrator, which transmits vibration to the funnel locker. The photoelectric detector to be tested in each transparent funnel vibrates accordingly. Eventually, each photoelectric detector to be tested is stuck in the transparent funnel.

[0038] Step 5: The central controller controls the servo motor to drive the rotating shaft to drive the funnel locker to rotate, so that the transparent funnel opening faces the material platform and then controls the locking hook to release the tray. The tray falls to the material platform under the action of gravity;

[0039] Step 6: The central controller controls the servo motor to drive the rotating shaft to drive the funnel locker to rotate, so that the transparent funnel opening and the pins of the photoelectric detector to be tested face the top cover. The central controller then controls each three-claw pin opener to open the corresponding pins of the photoelectric detector to be tested to an appropriate angle.

[0040] Step 7: The central controller controls the linear motor to drive the rotating shaft to drive the funnel locker to move closer to the array point contact circuit board until each elastic contact on the array point contact circuit board contacts the corresponding pin of the photoelectric detection to be tested;

[0041] Step 8: The central controller receives the electrical signal fed back by the array point contact circuit board, and determines the test result of each photoelectric detector to be tested according to the electrical signal.

[0042] Preferably, in the power-on test method for the photodetector described in some solutions, step six further includes:

[0043] The central controller controls the second driving motor to drive the lifting rod to drive the guide plate to move toward the funnel locker until the three guide holes on each guide member are matched with the three pins of a photoelectric detector to be tested.

[0044] Compared with the existing technology, the above technical solution provided by this application has the following technical effects:

[0045] The photodetector power-on test system and method provided in this application utilizes a framework structure with guide rails and a cover plate to provide position adjustment for the pin position and angle correction required before and during testing of the photodetector under test. The transparent funnel and longitudinal wave vibrator in the funnel locker are used to fix the position and angle of the photodetector under test, thereby clamping each photodetector under test to the funnel locker. During this process, the rotation axis is controlled to move or flip in a timely manner to lock and release the funnel locker from the tray. After the tray is released, the photodetector under test has been locked by the transparent funnel and the pins are facing upward. A three-claw pin spreader is used to spread the pins of each photodetector under test to an appropriate angle. The array-type point contact circuit board is then controlled to achieve point contact with the pins of the photodetector under test, thereby enabling insertion and removal. After the array-type point contact circuit board makes point contact with the pins of the photodetector under test, different electrical signals are generated based on whether the photodetector under test is functioning properly. These signals are then sent to a central controller, which then automatically obtains the test results of the photodetector under test. This application solution frees up human resources by utilizing devices such as a transparent funnel and a three-prong pin spreader to calibrate the position and angle of the photodetector under test, as well as the angle of the pins. This ensures that each pin of the photodetector under test accurately contacts the array of elastic contacts on the arrayed point-contact circuit board. This improves the positioning accuracy of the photodetector under test and reduces damage to the pins. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a structural diagram of a photoelectric detector power-on test system according to an embodiment of the present application;

[0047] Figure 2 This is a structural diagram of a tray placed on a loading platform according to an embodiment of the present application;

[0048] Figure 3 This is a schematic structural diagram of a photoelectric detector to be tested according to an embodiment of the present application;

[0049] Figure 4a This is a schematic diagram of the three-dimensional structure of a transparent funnel according to an embodiment of the present application;

[0050] Figure 4b for Figure 4a A side view of the transparent funnel shown;

[0051] Figure 4c for Figure 4a A top view of the transparent funnel shown;

[0052] Figure 5 This is a schematic structural diagram of a three-claw pin spreader according to an embodiment of the present application;

[0053] Figure 6This is a schematic structural diagram of the photodetector to be tested according to one embodiment of the present application after the three pins are stretched out;

[0054] Figure 7 This is a structural diagram of an array point contact circuit board according to an embodiment of the present application;

[0055] Figure 8 This is a structural diagram of a photoelectric detector power-on test system according to another embodiment of the present application;

[0056] Figure 9 This is a structural diagram of a guide member according to an embodiment of the present application;

[0057] Figure 10 This is a flowchart of the steps of the photodetector power-on test method described in one embodiment of the present application. DETAILED DESCRIPTION

[0058] The specific implementation of this application is further described below with reference to the accompanying drawings.

[0059] It is easy to understand that according to the technical solution of this application, a variety of structural methods and implementation methods can be replaced with each other by those skilled in the art without changing the essential spirit of this application. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of this application and should not be regarded as the entire application or as a limitation or restriction of the technical solution of the application.

[0060] This embodiment provides a photoelectric detector power-on test system, including a central controller and Figure 1 As shown in:

[0061] The frame 100 includes a vertically arranged guide rail 101 and a cover plate 102 on the top of the guide rail;

[0062] Material platform 110, such as Figure 2 As shown, it is used to place a tray 200, in which the photoelectric detectors 10 to be tested are arranged in an array form. The structure of the detectors 10 to be tested is as shown in FIG. Figure 3 As shown, it includes three pins 11, each pin being about 14 mm long. When the detector 10 to be tested is placed in the tray, the pins face downward. The tray 200 can be selected to comply with the EIA standard.

[0063] The funnel locker 120 includes a funnel fixing plate, and the funnel fixing plate is provided with Figure 3The transparent funnel 121 shown in the figure has the same array form as the photodetector 10 to be tested. The height of the transparent funnel 121 is less than the pin length of the photodetector to be tested. Therefore, even if the transparent funnel 121 is sleeved on the outside of the photodetector to be tested, the pin 11 will be exposed to the outside, which will not affect the subsequent direction adjustment of the pin 11. In addition, the inner wall surface roughness Ra of the transparent funnel 121 is ≤ 0.1 μm. Figure 1 As shown in the figure, a limit block 111 is formed on the material platform 110, and the limit block 111 is used to limit the position of the pallet. The pallet 200 needs to be placed in a specified position to ensure that each photoelectric detector to be tested inside it can be locked correspondingly by the transparent funnel in the funnel locker. As shown in the figure, a locking hook 121 is provided on the funnel fixing plate, and the locking hook 121 is used to lock the pallet 200 when the funnel fixing plate contacts the pallet 200. The locking hook 121 is an elastic silicone rubber layer locking hook. The transparent funnel 121 is provided on the funnel fixing plate, and the photoelectric detector to be tested 10 is placed on the pallet. When the funnel fixing plate is locked with the pallet, the transparent funnel 121 clamps the photoelectric detector to be tested 10. The structure of the transparent funnel 121 is as shown in the figure. Figure 4a and Figure 4b As shown, the transparent funnel 121 includes a positioning funnel 1211 and an elastic locking portion 1213. The opening of the positioning funnel 1211 is larger than the maximum diameter of the photodetector 10 to be tested. The diameter of the elastic locking portion 1212 is adapted to the maximum diameter of the photodetector 10 to be tested. The elastic locking portion 1212 is also configured with a pressure feedback element, which feeds back the pressure value between the photodetector 10 to be tested and the elastic locking portion 1212 to the central controller. The pressure feedback element can be a piezoresistor with a range of 0-50N and a resolution of 0.01N. As shown in the figure, the elastic locking portion 1212 is formed with a slot 1213. The photodetector 10 to be tested also has a ridge for indicating the electrode. When the photodetector 10 to be tested is locked by the elastic locking portion 1212, the ridge on the photodetector 10 to be tested is embedded in the slot 1213, ensuring that the electrode direction of the photodetector 10 to be tested meets the requirements.

[0064] The motion control module includes a rotating shaft 130, a motor assembly 131 and a longitudinal wave vibrator 132. The motor assembly 131 includes a linear motor and a servo motor. The linear motor can be implemented by a Hiwin LMG series motor, and the servo motor can be a Yaskawa brand Σ-7 series. The rotating shaft 130 is arranged on the guide rail 101 through the motor assembly 131; the linear motor controls the rotating shaft 130 to drive the funnel lock 120 to move along the guide rail 101 under the instruction of the central controller, and the servo motor controls the rotating shaft 130 to drive the funnel lock 120 to rotate under the instruction of the central controller; the longitudinal wave vibrator 132 is arranged between the rotating shaft 130 and the funnel lock 120, and vibrates under the instruction of the central controller. Further preferably, the inner wall of the elastic locking part 1213 is formed with a slope, and the diameter of the side close to the positioning funnel 1211 is larger than the diameter of the side away from the positioning funnel 1211, such as Figure 4c As shown, when the photodetector 10 to be tested is guided by the positioning funnel 1211 into the interior of the elastic locking portion 1212, if the ridge on the photodetector 10 to be tested does not accurately enter the slot 1213 due to incomplete alignment, the vibration of the longitudinal wave vibrator 132, combined with the inclined surface of the inner wall of the elastic locking portion 1212 and the center of gravity deviation of the photodetector 10 to be tested caused by the ridge, changes the angle of the photodetector 10 to be tested, allowing the ridge to enter the slot 1213 as quickly as possible. The longitudinal wave vibrator 132 has a micro-amplitude high-frequency vibration (adjustable amplitude 0.1-5μm, frequency 20kHz+1%), and its resonance interference is low (modal damping ratio ≥5%).

[0065] The three-claw pin expansion module 140 is provided with a plurality of arrays in the same form as the photoelectric detector to be tested. Figure 5 The three-claw pin spreader 141 shown in FIG. 1 is used to spread the pins 11 of the photoelectric detector 10 to a suitable angle under the instruction of the central controller. Figure 6 shown. Figure 5The three-claw pin spreader 141 shown includes three claws 1411, which are thermoplastic elastomers (material: SEBS, hardness Shore A 70±5), and an opening 1412 is formed at the end of each claw. When the three-claw pin spreader is needed to spread the pins, the angle of each claw 1411 can be adjusted under the control of the central controller so that a pin is inserted into each opening 1412. In a specific implementation, an image acquisition sensor can be set on the top of the three-claw pin spreader to detect whether a pin is inserted into each opening 1412. When the pin is not inserted into the opening, the position deviation between the pin and the opening can be fed back to the central controller for the central controller to adjust the angle of the claw. When a pin is inserted into each opening, the angle of the three claws is adjusted to spread the pins. The angle adjustment of each claw can be achieved by driving a stepper motor (set inside the top, model: Oriental Motor PKP series), with an opening angle of 10°±2° and an expansion efficiency of ≥200pcs / h. In specific implementation, the three-claw pin expansion module 140 can be driven by a control arm assembly 300 such as a manipulator. When it is required to perform the expansion function, the control arm assembly 300 drives the three-claw pin expansion module 140 to move to the working position. In specific implementation, the three-claw pin expansion module 140 is controlled to move above the photodetector to be tested, and then the claws of each three-claw pin expander 141 are controlled to align with the corresponding pins. Each pin passes through the opening on the corresponding claw, and the claws of each three-claw pin expander 141 are retracted to 3mm from the bottom of the pin. Each claw is controlled to lock, and the stepper motor drives the claw to expand the pin at a rate of 0.05mm / s at an angle of 10°±2°. A PVDF piezoelectric film (model: Measurement Specialties) is embedded inside each claw. DT series), real-time monitoring of the force between the claws and the pins, synchronous PVDF sensor monitoring of the stress curve (sampling rate 10kHz), ensuring that the opening force is ≤ 2N, controlling the movement of the three claws to achieve the largest suitable angle for the pin opening, and then the three-claw pin expansion module 140 is controlled to pull upward. After the pulling is completed, each pin is separated from the claw of the corresponding three-claw pin expander, and the control arm assembly 300 drives the control three-claw pin expansion module 140 to move away, which will not affect the subsequent movement and contact of the array point contact circuit board 150 and the funnel locker 120. The comparison results before and after the pin opening are as follows. Figure 6 and Figure 3 shown.

[0066] Array type point contact circuit board 150, such as Figure 7As shown, an elastic contact array is provided thereon, which is in the same form as the pin array of the photoelectric detector to be tested; each elastic contact contacts the corresponding pin of the photoelectric detector to be tested; the array point contact circuit board 150 sends an electrical signal to the central controller, and the electrical signal is used by the central controller to determine the test result of the photoelectric sensor 10 to be tested. Figure 7 As shown, a plurality of pin contact plates 151 are provided on the array type point contact circuit board 150. Each pin contact plate 150 has three elastic contacts, which correspond to the three pins of the photodetector to be tested. Figure 7 The three elastic contacts on the center pin contact pad 150 are aligned at the same angle. Furthermore, the arrayed point contact circuit board 150 utilizes beryllium copper alloy elastic contacts (lifespan > 500,000 cycles, yield strength 1200 MPa), with the contact surface plated with hard gold (thickness ≥ 1.5 μm, roughness Ra ≤ 0.05 μm). The contact force is controllable between 0.3 and 1.2 N (closed-loop control accuracy ± 0.05 N), and the contact array (contact resistance < 10 mΩ, electroplating process parameters: current density 3 A / dm², time 20 min). In conjunction with the LED-ID positioning system (encoding method: QR Code + infrared positioning), this system implements coordinate-level alarms for defective products. Specifically, one side of the arrayed point contact circuit board 150 has arrayed photodetectors to be tested, and the other side is provided with LEDs. Each LED has an ID, and the LED ID corresponds to the coordinates formed by its row and column. Each LED corresponds to the photodetector to be tested at the same position. If the photoelectric detector to be tested meets the test conditions after being powered on, the corresponding LED on the other side will light up normally. Finally, the photoelectric detectors to be tested at which positions have passed the test can be determined based on the IDs of the normally lit LEDs. The photoelectric detectors to be tested at other positions can be considered to have failed the test.

[0067] Preferably, if Figure 8 As shown, the photoelectric detector power-on test system further includes:

[0068] The monitoring module 600 includes an X-ray imager and an optical sensor arranged on the guide rail; after the transparent funnel 121 is coupled with the photoelectric detector 10 to be tested, the X-ray imager obtains the imaging information of the funnel locker, and the optical sensor determines the degree of coupling completion between the transparent funnel 121 and the photoelectric detector 10 to be tested based on the detected imaging information. The X-ray imager emits X-rays to the transparent funnel 121, and the imaging results will be different depending on whether there is a photoelectric detector to be tested in the transparent funnel. The coupling status of each transparent funnel and the photoelectric detector to be tested can be determined based on the imaging results. If all the transparent funnels are successfully coupled with the photoelectric detector to be tested, the locking hook can be controlled to lock the tray. The optical sensor sends the obtained results to the central controller, which determines whether it is necessary to continue controlling the vibration of the longitudinal wave vibrator 132 based on the coupling status of the transparent funnel and the photoelectric detector to be tested.

[0069] More preferably, combined Figure 1 and Figure 8 The system further includes: a bracket 500, which is disposed on the cover plate 102, and a first drive motor is disposed inside the bracket 500; a lead screw 501, which is disposed on the bracket 500 and is driven by the first drive motor to move along the guide rail; and the array point contact circuit board 150, which is disposed at the end of the lead screw 501 and is driven by the lead screw to move along the guide rail. When the array point contact circuit board 150 is required to be brought closer to the funnel locker carrying the photodetector to be tested, so that the elastic contacts on the array point contact circuit board 150 are in contact with the pins of the photodetector to be tested, the central controller can control the action of the first drive motor while controlling the action of the linear motor. That is, the lead screw 501 drives the array point contact circuit board 150 to move downward, and the linear motor drives the funnel locker to move upward, thereby accelerating the contact between the two and improving efficiency.

[0070] like Figure 8 As shown, the system preferably further includes a second drive motor, which is arranged inside the bracket 500; a lifting rod 502, which is arranged on the bracket 500 and is driven by the second drive motor to move along the guide rail; a guide plate 503, which is arranged on the lifting rod 502 and moves along the guide rail under the drive of the lifting rod 502; the guide plate 503 is provided with a plurality of Figure 9The guide members 5031 shown are arranged in the same array as the transparent funnels 121. Each guide member 5031 has three guide holes formed therein, each corresponding to a pin 11 of a photodetector under test. The top opening of the guide member 5031 is larger than the bottom opening. The combined height of the guide member 5031 and the transparent funnel 121 is less than the pin length of the photodetector under test. The guide members 5031 function as follows: if the three-prong pin expansion module does not expand the pins of the photodetector under test to the appropriate position, the three-hole positioning structure within the guide member 5031 can be used to perform secondary shaping of the expanded pins to correct minor bending deviations.

[0071] Further preferably, the above solution also includes a barcode scanner 400, connected to the central controller, which scans the batch information of the photoelectric detector and transmits the scan results to the central controller. The barcode scanner 400 can be an RFID reader / writer with a frequency of 13.56 MHz. The batch information includes the batch ID and device specifications such as pin spacing and tolerance range. After the scan results of the barcode scanner 400 are sent to the central controller, the central controller can use them as the detected object and information, and the final detection results can also be associated with them.

[0072] The present application also provides a method for testing a photoelectric detector by powering on. Figure 10 As shown, the photoelectric detector power-on test system described in any one of the above embodiments is implemented, and the method includes the following steps:

[0073] Step 1: After the tray with the photoelectric detector to be tested is placed on the material platform, the central controller controls the servo motor to drive the rotating shaft to drive the funnel lock to rotate so that the opening of the transparent funnel faces the photoelectric detector to be tested; wherein, the pin of the photoelectric detector to be tested faces the direction of the material platform.

[0074] In the initial state, the pin of the photodetector to be tested is downward.

[0075] Step 2: The central controller controls the linear motor to drive the rotating shaft to drive the funnel locker to move toward the photoelectric detector to be tested, and the transparent funnel is coupled with the photoelectric detector to be tested one by one. Each photoelectric detector to be tested is fixed by a transparent funnel; the central controller controls the locking hook to lock the tray.

[0076] At this time, a photodetector to be tested is embedded in each transparent funnel, and the pins of the photodetector to be tested are facing downward.

[0077] Step 3: After the central controller controls the linear motor to drive the rotating shaft to drive the funnel lock away from the material platform, it controls the servo motor to drive the rotating shaft to drive the funnel lock to rotate so that the transparent funnel opening and the pins of the photoelectric detector to be tested face the top cover.

[0078] By controlling the funnel lock to rotate 180 degrees, the pins of the photodetector to be tested can be facing upward.

[0079] Step 4: The central controller controls the longitudinal wave vibrator to start, and the longitudinal wave vibrator transmits the vibration to the funnel locker. The photoelectric detector to be tested in each transparent funnel vibrates accordingly, and eventually each photoelectric detector to be tested is stuck by the transparent funnel.

[0080] The longitudinal wave vibrator vibrates, aligning the position and angle of each photodetector to the desired level. The ridges of the photodetectors are locked into the slots of the transparent holes. At this point, the pins of the photodetectors face upward.

[0081] Step 5: The central controller controls the servo motor to drive the rotating shaft to drive the funnel locker to rotate, so that the transparent funnel opening faces the material platform and then controls the locking hook to release the tray. The tray falls to the material platform under the action of gravity.

[0082] By controlling the funnel locker to rotate 180°, the tray is located under the funnel locker, the locking hook is released, and the tray falls off under the action of gravity. At this time, the pins of each photodetector to be tested are exposed. In this step, the pins of each photodetector to be tested are downward.

[0083] Step 6: The central controller controls the servo motor to drive the rotating shaft to drive the funnel locker to rotate, so that the transparent funnel opening and the pins of the photoelectric detector to be tested face the top cover. The central controller then controls each three-claw pin opener to open the corresponding pins of the photoelectric detector to be tested to an appropriate angle.

[0084] The funnel locker rotates 180 degrees, and the pins of each photodetector to be tested face upward. At this time, the three-claw pin spreader is controlled to move above the funnel locker, and the pins of each photodetector to be tested are spread one by one, and then the three-claw pin spreader is removed.

[0085] Step 7: The central controller controls the linear motor to drive the rotating shaft to drive the funnel locker to move closer to the array point contact circuit board until each elastic contact on the array point contact circuit board contacts the corresponding pin of the photoelectric detection to be tested.

[0086] At this time, the pins of the photodetector are upward and stretched to an appropriate angle, matching the positional relationship of each elastic contact on the array point contact circuit board. Point contact between the two can be achieved by directly controlling the movement of the funnel locker along the guide rail, which is equivalent to performing pin insertion.

[0087] Step 8: The central controller receives the electrical signal fed back by the array point contact circuit board, and determines the test result of each photoelectric detector to be tested according to the electrical signal.

[0088] This electrical signal is the electrical signal output by the circuit board after both pins of each photodetector to be tested have successfully contacted the corresponding elastic contacts. It can be a level signal corresponding to whether the photodetector to be tested has passed the test, for example, a high level corresponds to passing the test, and a low level corresponds to otherwise. Since the different elastic contacts are also arranged in the same array form as the pins of the photodetector to be tested, the positions of the photodetectors to be tested corresponding to the elastic contacts at different positions are known. Further preferably, whether the photodetector to be tested has passed the test can be indicated by the light emission of an LED lamp in the same array form as the photodetector to be tested, which is arranged on the other side. Since the focus of the present application is on how to achieve the positioning and pin adjustment of the photodetector to be tested, the method of feedback of the test results on the array point contact circuit board is not the focus and can be achieved using the existing scheme, which will not be elaborated here.

[0089] Further preferably, step six further includes: the central controller controlling the second drive motor to drive the lifting rod to move the guide plate toward the funnel locker until the three guide holes on each guide member align with the three pins of a photodetector to be tested. In other words, this solution allows for secondary shaping and positioning of the pins, thereby improving the success rate of point contact between the pins and the elastic contacts.

[0090] In addition, in some schemes, in step seven, the first drive motor and the linear motor can be controlled to operate simultaneously, the lead screw drives the array point contact circuit board to move downward, and the linear motor drives the funnel locker to move upward, thereby accelerating the contact process between the two and improving efficiency.

[0091] In addition, after the specified power-on time is completed, when the array point contact circuit board and the funnel locker need to be separated, the central controller can simultaneously control the first drive motor and the linear motor to drive the screw and the rotating shaft in the away direction respectively.

[0092] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0093] The above are only the principles and preferred embodiments of the present application. It should be noted that, for those skilled in the art, on the basis of the principles of the present application, several other modifications can be made, which should also be considered as the scope of protection of the present application.

Claims

1. A photoelectric detector power-on test system, characterized in that: include: Central control unit; A frame, comprising a vertically arranged guide rail and a cover plate on top of the guide rail; A material platform for placing a tray, wherein the photoelectric detectors to be tested are arranged in an array form in the tray; The funnel locker includes a funnel fixing plate and transparent funnels arranged in an array on the funnel fixing plate, wherein the transparent funnels have the same array form as the photoelectric detectors to be tested, and the height of the transparent funnels is less than the length of the pins of the photoelectric detectors to be tested; a locking hook is provided on the funnel fixing plate, and the locking hook is used to lock the tray when in contact with the tray; The motion control module includes a rotating shaft, a motor assembly, and a longitudinal wave vibrator. The motor assembly includes a linear motor and a servo motor. The rotating shaft is arranged on the guide rail via the motor assembly. The linear motor controls the rotating shaft to drive the funnel locker to move along the guide rail under the instruction of the central controller. The servo motor controls the rotating shaft to drive the funnel locker to rotate under the instruction of the central controller. The longitudinal wave vibrator is arranged between the rotating shaft and the funnel locker and vibrates under the instruction of the central controller. A three-prong pin expansion module is provided with a plurality of three-prong pin spreaders in the same array as the photoelectric detector to be tested, each of the three-prong pin spreaders is used to spread the pins of the photoelectric detector to be tested to a suitable angle under the instruction of the central controller; An array-type point-contact circuit board is provided with an array of elastic contacts, which is in the same form as the pin array of the photoelectric detector to be tested; each elastic contact is in point contact with the corresponding pin of the photoelectric detector to be tested; the array-type point-contact circuit board sends an electrical signal to the central controller, and the electrical signal is used by the central controller to determine the test result of the photoelectric sensor to be tested.

2. The photoelectric detector power-on test system according to claim 1, characterized in that: Also includes: A monitoring module, including an X-ray imager and an optical sensor arranged on the guide rail; After the transparent funnel is coupled to the photoelectric detector to be tested, the X-ray imager obtains imaging information of the funnel locker, and the optical sensor determines the coupling completion degree of the transparent funnel and the photoelectric detector to be tested based on the detected imaging information.

3. The photoelectric detector power-on test system according to claim 2, characterized in that: Also includes: The transparent funnel includes a positioning funnel and an elastic locking part. The opening of the positioning funnel is larger than the maximum diameter of the photodetector to be tested. The diameter of the elastic locking part is adapted to the maximum diameter of the photodetector to be tested, and the elastic locking part is provided with a pressure feedback element. The pressure feedback element feeds back the pressure value between the photodetector to be tested and the elastic locking part to the central controller.

4. The photoelectric detector power-on test system according to claim 3, characterized in that: An inner wall of the elastic locking portion is formed with an inclined surface, and a diameter of a side close to the positioning funnel is larger than a diameter of a side away from the positioning funnel.

5. The photoelectric detector power-on test system according to claim 1, characterized in that: A limiting block is formed on the material platform, and the limiting block is used to limit the position of the tray.

6. The photoelectric detector power-on test system according to claim 1, characterized in that: Also includes: A bracket is provided on the cover plate, and a first driving motor is provided inside the bracket; A lead screw is provided on the bracket and is driven by the first drive motor to move along the guide rail; The array-type point-contact circuit board is arranged at the end of the lead screw and moves along the guide rail under the drive of the lead screw.

7. The photoelectric detector power-on test system according to claim 6, characterized in that: Also includes: a second driving motor, disposed inside the bracket; A lifting rod, arranged on the bracket and driven by the second driving motor to move along the guide rail; A guide plate is provided on the lifting rod and moves along the guide rail under the drive of the lifting rod; the guide plate is provided with guide members in an array, the array form of the guide members being the same as the array form of the transparent funnel, each of the guide members having three guide holes formed therein, each of the guide holes corresponding to a pin of a photoelectric detector to be tested; the top opening size of the guide member is larger than the bottom opening size; The sum of the heights of the guide member and the transparent funnel is less than the length of the pin of the photoelectric detector to be tested.

8. The photoelectric detector power-on test system according to any one of claims 1 to 7, characterized in that: Also includes: The barcode scanner is connected to the central controller, and scans the batch information of the photoelectric detector and sends the scanning result to the central controller.

9. A photoelectric detector power-on test method, characterized in that: The method is implemented by applying the photoelectric detector power-on test system according to any one of claims 1 to 8, and comprises the following steps: Step 1: After the tray with the photoelectric detector to be tested is placed on the material platform, the central controller controls the servo motor to drive the rotating shaft to drive the funnel lock to rotate so that the opening of the transparent funnel faces the photoelectric detector to be tested; wherein, the pin of the photoelectric detector to be tested faces the direction of the material platform; Step 2: The central controller controls the linear motor to drive the rotating shaft to drive the funnel locker to move toward the photoelectric detector to be tested, and the transparent funnel is coupled with the photoelectric detector to be tested in a one-to-one correspondence. Each photoelectric detector to be tested is fixed by a transparent funnel; the central controller controls the locking hook to lock the tray; Step 3: After the central controller controls the linear motor to drive the rotating shaft to drive the funnel locker away from the material platform, the central controller controls the servo motor to drive the rotating shaft to drive the funnel locker to rotate so that the transparent funnel opening and the pins of the photoelectric detector to be tested face the top cover; Step 4: The central controller starts the longitudinal wave vibrator, which transmits vibration to the funnel locker. The photoelectric detector to be tested in each transparent funnel vibrates accordingly. Eventually, each photoelectric detector to be tested is stuck in the transparent funnel. Step 5: The central controller controls the servo motor to drive the rotating shaft to drive the funnel locker to rotate, so that the transparent funnel opening faces the material platform and then controls the locking hook to release the tray. The tray falls to the material platform under the action of gravity; Step 6: The central controller controls the servo motor to drive the rotating shaft to drive the funnel locker to rotate, so that the transparent funnel opening and the pins of the photoelectric detector to be tested face the top cover. The central controller then controls each three-claw pin opener to open the corresponding pins of the photoelectric detector to be tested to an appropriate angle. Step 7: The central controller controls the linear motor to drive the rotating shaft to drive the funnel locker to move closer to the array point contact circuit board until each elastic contact on the array point contact circuit board contacts the corresponding pin of the photoelectric detection to be tested; Step 8: The central controller receives the electrical signal fed back by the array point contact circuit board, and determines the test result of each photoelectric detector to be tested according to the electrical signal.

10. The photoelectric detector power-on test method according to claim 9, characterized in that: The step six also includes: The central controller controls the second driving motor to drive the lifting rod to drive the guide plate to move toward the funnel locker until the three guide holes on each guide member are matched with the three pins of a photoelectric detector to be tested.

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