Chip appearance testing mechanism

Abstract

The utility model discloses a chip appearance testing mechanism, which belongs to the technical field of chip testing and comprises a bottom plate, a control box is fixedly mounted on the bottom plate, a first controller and a second controller are fixedly mounted in the control box, the second controller is electrically connected with the first controller, and the first controller is electrically connected with the second controller. The bottom plate is fixedly provided with a conveying device, the conveying device is electrically connected to the second controller, the bottom plate is rotationally connected with a first grabbing device and a second grabbing device, and the first grabbing device and the second grabbing device are electrically connected to the second controller. A first support block and a second support block are fixedly mounted on the control box, the first camera and the second camera are electrically connected to the first controller, a detection platform is fixedly mounted on the control box, and a good product box and an inferior product box are placed on the bottom plate. The device is high in automation degree, and human errors are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of chip testing, in particular to a chip appearance testing mechanism. Background Art

[0002] The chip appearance testing mechanism is a device used to inspect and test the appearance of semiconductor chips. Its main function is to detect the main parameters of semiconductor chips, such as size, shape, position, offset, boundary, etc. It can quickly and accurately detect the appearance quality of the chip, and determine whether there are defects or non-conformance to specifications in the chip manufacturing process, thereby improving the production efficiency and quality of the chip.

[0003] In the prior art, chip appearance testing organizations usually rely on manual operation and observation, so there is a risk of human error and test inconsistency. Since chip appearance testing organizations have high requirements for chip size, shape and quality, the chips need to be carefully handled and selected during actual use, which increases production costs and time costs.

[0004] In summary, the existing chip appearance testing mechanism has the defects of low automation, human errors, high production cost and time cost. Therefore, it is necessary to provide a chip appearance testing mechanism to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a chip appearance testing mechanism to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A chip appearance testing mechanism comprises a base plate, a control box is fixedly mounted on the base plate, a first controller and a second controller are fixedly mounted inside the control box, the second controller is electrically connected to the first controller, a conveying device is fixedly mounted on the base plate, the conveying device is electrically connected to the second controller, a first grasping device and a second grasping device are rotatably connected to the base plate, the first grasping device and the second grasping device are electrically connected to the second controller, a first supporting block and a second supporting block are fixedly mounted on the control box, a first camera is fixedly mounted on the first supporting block, a second camera is fixedly mounted on the second supporting block, the first camera and the second camera are electrically connected to the first controller, a detection platform is fixedly mounted on the control box, and a good product box and a bad product box are placed on the base plate.

[0008] As a further description of the above technical solution:

[0009] A display screen, buttons and a USB interface are fixedly mounted on the control box, and the display screen, buttons and USB interface are all electrically connected to the first controller.

[0010] As a further description of the above technical solution:

[0011] The conveying device includes a conveying shell, a feed port is opened on the right side of the conveying shell, a first laser emitter is fixedly installed on the conveying shell, a first motor is rotatably connected to the conveying shell, the first motor is electrically connected to the second controller, a first conveying shaft and a second conveying shaft are rotatably connected inside the conveying shell, the second conveying shaft is fixedly connected to the first motor, a conveying belt is transmission-connected to the first conveying shaft and the second conveying shaft, and a lifting plate is fixedly connected to the conveying belt.

[0012] As a further description of the above technical solution:

[0013] The first grasping device includes a grasping base, a first robotic arm is fixedly connected to the top of the grasping base, a second motor is fixedly installed inside the first robotic arm, a first gear is fixedly installed on the second motor, the first gear is meshed with the second gear, the second gear is fixedly connected to a rotating shaft, the rotating shaft is rotatably connected to the first robotic arm, the rotating shaft is fixedly connected to the second robotic arm, a laser receiver and a robotic gripper are fixedly connected to the second robotic arm, the robotic gripper is electrically connected to the second controller, and the second grasping device has the same structure as the first grasping device.

[0014] As a further description of the above technical solution:

[0015] The detection platform includes a connecting column, one end of which is fixedly connected to the control box, and the other end of which is fixedly connected to a mounting plate, a second laser emitter is fixedly mounted on the mounting plate, a detection plate is fixedly mounted on the mounting plate, the detection plate is made of transparent glass material, and a positioning block and a ruler are fixedly mounted on the detection plate.

[0016] As a further description of the above technical solution:

[0017] The second controller includes a second control chip, a fourth conditioning circuit, a first PWM module, a second PWM module and a third PWM module. The second control chip is bidirectionally connected to the first controller. The output end of the second control chip is connected to the input ends of the first laser transmitter and the second laser transmitter. The input end of the fourth conditioning circuit is connected to the output end of the laser receiver. The output end of the fourth conditioning circuit is connected to the input end of the second control chip. The input ends of the first PWM module, the second PWM module and the third PWM module are connected to the output end of the second control chip. The output end of the first PWM module is connected to the input end of the first motor. The output end of the second PWM module is connected to the input end of the second motor. The output end of the third PWM module is connected to the input end of the mechanical gripper.

[0018] As a further description of the above technical solution:

[0019] The first controller includes a first control chip, a frequency converter, a first conditioning circuit, a second conditioning circuit, a third conditioning circuit, a first conversion circuit, a second conversion circuit and a memory. The input end of the first control chip is connected to the output end of the frequency converter, the input end of the first conditioning circuit is connected to the output end of the button, the input end of the second conditioning circuit is connected to the output end of the first camera, the input end of the third conditioning circuit is connected to the output end of the second camera, the output ends of the first conditioning circuit, the second conditioning circuit and the third conditioning circuit are connected to the input end of the first control chip, the input end of the second conversion circuit is connected to the output end of the first control chip, the output end of the second conversion circuit is connected to the input end of the display screen, the first conversion circuit is bidirectionally connected to the first control chip, the first conversion circuit is bidirectionally connected to the USB interface, the first control chip is bidirectionally connected to the second controller, and the first control chip is bidirectionally connected to the memory.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0021] 1. In the utility model, the device automatically performs the appearance test on the chip without manual operation and observation, has a high degree of automation, and avoids human errors.

[0022] 2. In the utility model, the device can test chips of different sizes and materials, and has low requirements on chip size, shape and quality, thus realizing diversified testing and reducing production costs and time costs.

[0023] 3. In the utility model, the device is provided with a display screen, buttons and a USB interface, and adopts a visual interface design, which is convenient for operators to issue instructions, real-time monitoring, data storage and other operations, thereby improving real-time monitoring capabilities and data processing capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from another angle;

[0026] Figure 3 This is a schematic diagram of the internal structure of the control box of the utility model;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the conveying device of the utility model;

[0028] Figure 5 This is a schematic diagram of the internal structure of the conveying device of the utility model;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the first grabbing device of the utility model;

[0030] Figure 7 A schematic diagram of the structure of the utility model;

[0031] Figure 8 It is a schematic diagram of the three-dimensional structure of the detection platform of the utility model;

[0032] Fig. 9 This is a schematic diagram of the second controller architecture of the present utility model;

[0033] Fig.10 It is a schematic diagram of the first controller architecture of the utility model.

[0034] Legend: 1. Bottom plate; 2. Conveying device; 201. Conveying shell; 202. Feeding port; 203. First motor; 204. First laser emitter; 205. Conveying belt; 206. Lifting plate; 207. First conveying shaft; 208. Second conveying shaft; 3. First grabbing device; 301. Grasping base; 302. First mechanical arm; 303. Second motor; 304. First gear; 305. Second gear; 306. Rotating shaft; 307. Second mechanical arm; 308. Laser receiver; 309. Mechanical gripper; 4. Second grabbing device; 5. Control box; 6. Detection platform; 601. Connecting column; 602. Mounting plate; 603. Second laser emitter; 604. Detection plate; 605, positioning block; 606, ruler; 7, first controller; 701, first control chip; 702, inverter; 703, first conditioning circuit; 704, second conditioning circuit; 705, third conditioning circuit; 706, first conversion circuit; 707, second conversion circuit; 708, memory; 8, second controller; 801, second control chip; 802, fourth conditioning circuit; 803, first PWM module; 804, second PWM module; 805, third PWM module; 9, first support block; 10, first camera; 11, second support block; 12, second camera; 13, display screen; 14, button; 15, USB interface; 16, good product box; 17, bad product box. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] See also Figure 1-10The utility model provides a technical solution: a chip appearance testing mechanism, including a base plate, a control box 5 is fixedly installed on the base plate 1, a first controller 7 and a second controller 8 are fixedly installed inside the control box 5, the second controller 8 is electrically connected to the first controller 7, a conveying device 2 is fixedly installed on the base plate 1, the conveying device 2 is electrically connected to the second controller 8, a first grasping device 3 and a second grasping device 4 are rotatably connected to the base plate 1, the first grasping device 3 and the second grasping device 4 are electrically connected to the second controller 8, a first supporting block 9 and a second supporting block 11 are fixedly installed on the control box 5, a first camera 10 is fixedly installed on the first supporting block 9, a second camera 12 is fixedly installed on the second supporting block 11, the first camera 10 and the second camera 12 are electrically connected to the first controller 7, a detection platform 6 is fixedly installed on the control box 5, and a good product box 16 and a bad product box 17 are placed on the base plate 1.

[0037] The specific implementation method is as follows: the control box 5 is internally installed with a first controller 7 and a second controller 8, the first controller 7 issues instructions to the second controller 8, the second controller 8 controls the conveying device 2 to convey the chip to be tested, the base plate 1 is provided with a first grasping device 3 and a second grasping device 4, the second controller 8 controls the first grasping device 3 to grasp the chip to be tested from the conveying device 2, and places the chip to be tested on the detection platform 6, the first camera 10 and the second camera 12 scan the chip to be tested and transmit the information to the first controller 7, the first controller 7 judges the chip to be tested and issues instructions to the second controller 8, the second controller 8 controls the second grasping device 4 to grasp the chip and put it into the good product box 16 or the defective product box 17.

[0038] A display screen 13 , a button 14 , and a USB interface 15 are fixedly mounted on the control box 5 , and the display screen 13 , the button 14 , and the USB interface 15 are all electrically connected to the first controller 7 .

[0039] The specific implementation method is as follows: the first controller 7 can be connected to other devices through the USB interface 15, and the staff can check information, issue instructions, perform real-time monitoring, store data, etc. through the display screen 13 and buttons 14.

[0040] The conveying device 2 includes a conveying shell 201, a feed port 202 is opened on the right side of the conveying shell 201, a first laser emitter 204 is fixedly installed on the conveying shell 201, a first motor 203 is rotatably connected to the conveying shell 201, the first motor 203 is electrically connected to the second controller 8, a first conveying shaft 207 and a second conveying shaft 208 are rotatably connected inside the conveying shell 201, the second conveying shaft 208 is fixedly connected to the first motor 203, a conveying belt 205 is transmission-connected to the first conveying shaft 207 and the second conveying shaft 208, and a lifting plate 206 is fixedly connected to the conveying belt 205.

[0041] The specific implementation method is as follows: the second controller 8 controls the first motor 203 to rotate, thereby driving the first conveying shaft 207 to rotate, and the chip to be tested is conveyed from the feed port 202 to the lifting plate 206. The first conveying shaft 207 drives the conveyor belt 205 to move, and then drives the lifting plate 206 to move upward, thereby lifting the chip to be tested to the top of the conveying device 2, which is convenient for the first grasping device 3 to grasp it.

[0042] The first grasping device 3 includes a grasping base 301, a first robotic arm 302 is fixedly connected to the top of the grasping base 301, a second motor 303 is fixedly installed inside the first robotic arm 302, a first gear 304 is fixedly installed on the second motor 303, the first gear 304 is meshedly connected to the second gear 305, the second gear 305 is fixedly connected to a rotating shaft 306, the rotating shaft 306 is rotatably connected to the first robotic arm 302, the rotating shaft 306 is fixedly connected to a second robotic arm 307, a laser receiver 308 and a robotic gripper 309 are fixedly connected to the second robotic arm 307, the robotic gripper 309 is electrically connected to the second controller 8, and the second grasping device 4 has the same structure as the first grasping device 3.

[0043] The specific implementation is as follows: a second motor 303 is fixedly installed inside the first robotic arm 302, and the second controller 8 controls the second motor 303 to rotate. The second motor 303 drives the first gear 304 to rotate, thereby driving the second gear 305 to rotate. The second gear 305 is fixedly connected to the rotating shaft 306, and the rotating shaft 306 is fixedly connected to the second robotic arm 307. The rotation of the second gear 305 drives the second robotic arm 307 to rotate, thereby realizing the horizontal rotation of the second robotic arm 307. When the laser receiver 308 receives the laser emitted by the first laser transmitter 204, the second motor 303 stops rotating, and the second controller 8 controls the robotic gripper 309 to grab the chip to be tested. Then the second controller 8 controls the second motor 303 to rotate to transport the chip to be tested to the detection platform 6.

[0044] The detection platform 6 includes a connecting column 601, one end of which is fixedly connected to the control box 5, and the other end of which is fixedly connected to a mounting plate 602, on which a second laser emitter 603 is fixedly mounted, and on which a detection plate 604 is fixedly mounted, the detection plate 604 is made of transparent glass material, and on which a positioning block 605 and a ruler 606 are fixedly mounted.

[0045] The specific implementation method is as follows: after the laser receiver 308 of the first grasping device 3 receives the laser emitted by the second laser emitter 603, the second controller 8 controls the first grasping device 3 to place the chip to be tested on the detection board 604. After the first camera 10 and the second camera 12 scan the chip to be tested, the second grasping device 4 transports the chip to the good product box 16 or the defective product box 17. The positioning block 605 assists the first controller 7 to determine the position of the chip. The ruler 606 assists the first controller 7 to determine the size of the chip. The connecting column 601 and the mounting plate 602 fix the detection board 604.

[0046] The second controller 8 includes a second control chip 801, a fourth conditioning circuit 802, a first PWM module 803, a second PWM module 804 and a third PWM module 805. The second control chip 801 is bidirectionally connected to the first controller 7. The output end of the second control chip 801 is connected to the input ends of the first laser emitter 204 and the second laser emitter 603. The input end of the fourth conditioning circuit 802 is connected to the output end of the laser receiver 308. The output end of the fourth conditioning circuit 802 is connected to the input end of the second control chip 801. The input ends of the first PWM module 803, the second PWM module 804 and the third PWM module 805 are connected to the output end of the second control chip 801. The output end of the first PWM module 803 is connected to the input end of the first motor 203. The output end of the second PWM module 804 is connected to the input end of the second motor 303. The output end of the third PWM module 805 is connected to the input end of the mechanical gripper 309.

[0047] The implementation method is specifically as follows: the second control chip 801 receives the instruction issued by the first controller 7, the second control chip 801 controls the first laser emitter 204 and the second laser emitter 603 to emit laser, and controls the first motor 203 and the second motor 303 through the first PWM module 803 and the second PWM module 804, so as to control the first grasping device 3 and the second grasping device 4 to move. During the movement of the first grasping device 3 and the second grasping device 4, the information of the laser receiver 308 is received through the fourth conditioning circuit 802, so as to determine the position of the first grasping device 3 and the second grasping device 4, and at the same time, the mechanical gripper 309 is controlled by the third PWM module 805 to grasp and place the chip. When the first grasping device 3 places the chip on the detection platform 6, the second control chip 801 sends a signal to the first controller 7. When the scanning of the chip is completed, the second control chip 801 controls the second grasping device 4 to place the chip into the corresponding storage box according to the instruction of the first controller 7.

[0048] The first controller 7 includes a first control chip 701, a frequency converter 702, a first conditioning circuit 703, a second conditioning circuit 704, a third conditioning circuit 705, a first conversion circuit 706, a second conversion circuit 707 and a memory 708. The input end of the first control chip 701 is connected to the output end of the frequency converter 702, the input end of the first conditioning circuit 703 is connected to the output end of the button 14, the input end of the second conditioning circuit 704 is connected to the output end of the first camera 10, the input end of the third conditioning circuit 705 is connected to the output end of the second camera 12, and the first conditioning circuit The output ends of 703, the second conditioning circuit 704 and the third conditioning circuit 705 are connected to the input end of the first control chip 701, the input end of the second conversion circuit 707 is connected to the output end of the first control chip 701, the output end of the second conversion circuit 707 is connected to the input end of the display screen 13, the first conversion circuit 706 is bidirectionally connected to the first control chip 701, the first conversion circuit 706 is bidirectionally connected to the USB interface 15, the first control chip 701 is bidirectionally connected to the second controller 8, and the first control chip 701 is bidirectionally connected to the memory 708.

[0049] The specific implementation method is as follows: the first control chip 701 obtains electric energy by connecting to an external power supply through the frequency converter 702, the first control chip 701 obtains information of the first camera 10 and the second camera 12 through the second conditioning circuit 704 and the third conditioning circuit 705, and makes a judgment on the tested chip based on the information, passes the judgment result to the second controller 8, and displays it on the display screen 13 through the second conversion circuit 707, and stores the work record in the memory 708. When other devices are connected through the USB interface 15, the first control chip 701 transmits data to other devices through the first conversion circuit 706, and when the staff operates the button 14, the first control chip 701 obtains instructions through the first conditioning circuit 703.

[0050] Working principle: the chip to be tested is transported from the feed port 202 to the lifting plate 206, the second controller 8 controls the first motor 203 to rotate, and lifts the chip to be tested to the top of the conveying device 2, the second controller 8 controls the second motor 303 to rotate, and drives the second mechanical arm 307 to rotate, when the laser receiver 308 receives the laser emitted by the first laser transmitter 204, the second motor 303 stops rotating, the second controller 8 controls the mechanical gripper 309 to grab the chip to be tested, and then the second controller 8 controls the second motor 303 to rotate, and transports the chip to be tested to the detection platform 6, after the laser receiver 308 of the first grabbing device 3 receives the laser emitted by the second laser transmitter 603, the The second controller 8 controls the first grasping device 3 to place the chip to be tested on the detection board 604, and then the first camera 10 and the second camera 12 scan the chip to be tested. The positioning block 605 assists the first controller 7 to determine the position of the chip, and the ruler 606 assists the first controller 7 to determine the size of the chip. When the first controller 7 obtains the result, the second controller 8 receives the instruction issued by the first controller 7, and controls the second grasping device 4 to transport the chip to the good product box 16 or the defective product box 17. The first controller 7 can be connected to other devices through the USB interface 15, and the staff can check information, issue instructions, real-time monitoring, data storage and other operations through the display screen 13 and buttons 14.

[0051] In the description of the present invention, it should be understood that the terms "one end", "the other end", "right side", "top", "up", "down", "inside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chip appearance testing mechanism, comprising a base plate (1), characterized in that: A control box (5) is fixedly mounted on the bottom plate (1), a first controller (7) and a second controller (8) are fixedly mounted inside the control box (5), the second controller (8) is electrically connected to the first controller (7), a conveying device (2) is fixedly mounted on the bottom plate (1), the conveying device (2) is electrically connected to the second controller (8), a first grasping device (3) and a second grasping device (4) are rotatably connected to the bottom plate (1), the first grasping device (3) and the second grasping device (4) are electrically connected In the second controller (8), a first support block (9) and a second support block (11) are fixedly mounted on the control box (5), a first camera (10) is fixedly mounted on the first support block (9), a second camera (12) is fixedly mounted on the second support block (11), the first camera (10) and the second camera (12) are electrically connected to the first controller (7), a detection platform (6) is fixedly mounted on the control box (5), and a good product box (16) and a bad product box (17) are placed on the bottom plate (1).

2. A chip appearance testing mechanism according to claim 1, characterized in that: A display screen (13), a button (14) and a USB interface (15) are fixedly mounted on the control box (5); the display screen (13), the button (14) and the USB interface (15) are all electrically connected to the first controller (7).

3. A chip appearance testing mechanism according to claim 1, characterized in that: The conveying device (2) comprises a conveying shell (201), a feeding port (202) is opened on the right side of the conveying shell (201), a first laser emitter (204) is fixedly installed on the conveying shell (201), a first motor (203) is rotatably connected to the conveying shell (201), the first motor (203) is electrically connected to the second controller (8), a first conveying shaft (207) and a second conveying shaft (208) are rotatably connected inside the conveying shell (201), the second conveying shaft (208) is fixedly connected to the first motor (203), a conveying belt (205) is transmission-connected to the first conveying shaft (207) and the second conveying shaft (208), and a lifting plate (206) is fixedly connected to the conveying belt (205).

4. A chip appearance testing mechanism according to claim 1, characterized in that: The first grasping device (3) comprises a grasping base (301), a first mechanical arm (302) is fixedly connected to the top of the grasping base (301), a second motor (303) is fixedly installed inside the first mechanical arm (302), a first gear (304) is fixedly installed on the second motor (303), the first gear (304) is meshingly connected to the second gear (305), the second gear (305) is fixedly connected to a rotating shaft (306), the rotating shaft (306) is rotatably connected to the first mechanical arm (302), the rotating shaft (306) is fixedly connected to the second mechanical arm (307), a laser receiver (308) and a mechanical gripper (309) are fixedly connected to the second mechanical arm (307), the mechanical gripper (309) is electrically connected to the second controller (8), and the second grasping device (4) has the same structure as the first grasping device (3).

5. A chip appearance testing mechanism according to claim 1, characterized in that: The detection platform (6) comprises a connecting column (601), one end of the connecting column (601) is fixedly connected to the control box (5), and the other end of the connecting column (601) is fixedly connected to a mounting plate (602), a second laser emitter (603) is fixedly mounted on the mounting plate (602), a detection plate (604) is fixedly mounted on the mounting plate (602), the detection plate (604) is made of transparent glass material, and a positioning block (605) and a scale (606) are fixedly mounted on the detection plate (604).

6. A chip appearance testing mechanism according to claim 1, characterized in that: The second controller (8) comprises a second control chip (801), a fourth conditioning circuit (802), a first PWM module (803), a second PWM module (804) and a third PWM module (805); the second control chip (801) is bidirectionally connected to the first controller (7); an output end of the second control chip (801) is connected to an input end of the first laser transmitter (204) and a second laser transmitter (603); an input end of the fourth conditioning circuit (802) is connected to an output end of a laser receiver (308); and the fourth conditioning circuit (802) is connected to an output end of a laser receiver (308). The output end of the circuit (802) is connected to the input end of the second control chip (801); the input ends of the first PWM module (803), the second PWM module (804) and the third PWM module (805) are connected to the output end of the second control chip (801); the output end of the first PWM module (803) is connected to the input end of the first motor (203); the output end of the second PWM module (804) is connected to the input end of the second motor (303); and the output end of the third PWM module (805) is connected to the input end of the mechanical gripper (309).

7. A chip appearance testing mechanism according to claim 1, characterized in that: The first controller (7) comprises a first control chip (701), a frequency converter (702), a first conditioning circuit (703), a second conditioning circuit (704), a third conditioning circuit (705), a first conversion circuit (706), a second conversion circuit (707) and a memory (708); the input end of the first control chip (701) is connected to the output end of the frequency converter (702); the input end of the first conditioning circuit (703) is connected to the output end of the button (14); the input end of the second conditioning circuit (704) is connected to the output end of the first camera (10); the input end of the third conditioning circuit (705) is connected to the output end of the second camera (12); the first conditioning circuit (706) is connected to the output end of the second camera (12); The output ends of the first conditioning circuit (703), the second conditioning circuit (704) and the third conditioning circuit (705) are connected to the input end of the first control chip (701); the input end of the second conversion circuit (707) is connected to the output end of the first control chip (701); the output end of the second conversion circuit (707) is connected to the input end of the display screen (13); the first conversion circuit (706) is bidirectionally connected to the first control chip (701); the first conversion circuit (706) is bidirectionally connected to the USB interface (15); the first control chip (701) is bidirectionally connected to the second controller (8); and the first control chip (701) is bidirectionally connected to the memory (708).

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