CN110726669A - Flying probe is camera subassembly and flying probe test equipment for test equipment - Google Patents
Flying probe is camera subassembly and flying probe test equipment for test equipment Download PDFInfo
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- CN110726669A CN110726669A CN201910820150.XA CN201910820150A CN110726669A CN 110726669 A CN110726669 A CN 110726669A CN 201910820150 A CN201910820150 A CN 201910820150A CN 110726669 A CN110726669 A CN 110726669A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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Abstract
The invention discloses a camera assembly and flying probe testing equipment. The flying probe test equipment comprises a probe and a support arm used for installing the probe, the camera assembly comprises a support arranged above the support arm, a camera is arranged on the support, at least, a lens of the camera can move in the horizontal direction, a reflector capable of reflecting an image below the probe to the lens of the camera is arranged above the probe, and the reflector is installed on the support. According to the camera assembly and the flying probe testing equipment comprising the camera assembly, the camera is transversely arranged, and the image of the circuit board to be tested is reflected to the camera by the reflector, so that the camera or the lens thereof can move for a large distance in the horizontal direction, the circuit boards with different thicknesses can be accurately focused, the camera assembly is suitable for testing the circuit boards with large thickness difference, and the acquired image has high precision and accurate data.
Description
Technical Field
The invention relates to the technical field of flying probe test equipment, in particular to a camera assembly for flying probe test equipment and flying probe test equipment comprising the camera assembly.
Background
The flying probe test equipment is used for testing the product quality of a circuit board, and adopts a probe arranged on a support arm to move under the drive of the support arm so as to enable the probe to contact different contacts on the circuit board to be tested to complete the test. During testing, the circuit board is usually photographed by a camera and the image is sent to a control computer, so that the control computer identifies the contact on the circuit board and controls the movement of the probe according to the coordinates of the contact, so that the probe accurately contacts the contact. Since the contact itself and the distance between the contacts are small, this requires that the camera must be focused very precisely, and the control computer must also be able to obtain the precise relative position between the camera and the probe, which puts very high demands on the camera assembly.
The existing camera assembly generally comprises a camera and a camera support, wherein the camera is generally positioned above a probe and shoots downwards, the camera support and the probe support arm are driven by the same component to move in the horizontal direction (X, Y direction) but do not move along with the probe in the vertical direction (Z direction).
Disclosure of Invention
The invention aims to provide a camera component for flying probe test equipment and flying probe test equipment comprising the camera component, which can be suitable for circuit boards with various thicknesses, have large thickness difference of the circuit boards, and have high image acquisition precision and accurate data acquisition.
In order to solve the technical problem, the invention provides a camera assembly for flying probe testing equipment, wherein the flying probe testing equipment comprises a probe and a support arm for mounting the probe, the camera assembly comprises a support arranged above the support arm, a camera is arranged on the support, at least a lens of the camera can move in the horizontal direction, a reflector capable of reflecting an image of an object below the probe to the lens of the camera is arranged above the probe, and the reflector is arranged on the support.
Furthermore, the lens of the camera is arranged on a rack capable of sliding in the horizontal direction, a gear is arranged in a manner of being matched with the rack, and the rack is driven to move in the horizontal direction through rotation of the gear.
Furthermore, a horizontal sliding rail is arranged on the support, a sliding block is arranged on the sliding rail, the sliding block horizontally slides along the sliding rail, and the camera is fixedly installed on the sliding block.
Furthermore, a threaded hole is formed in the sliding block, a screw rod penetrates through the threaded hole, threads on the screw rod are matched with the threads in the threaded hole, and the sliding block is driven to slide on the sliding rail by rotating the screw rod.
Further, at least one end of the screw rod is provided with a knob, and the screw rod or the knob is provided with a dial for indicating the rotation angle of the screw rod.
Furthermore, the screw rod is connected to a stepping motor through a transmission mechanism and driven by the stepping motor to rotate, and the stepping motor is connected with a control computer of the flying probe testing equipment.
Furthermore, a sensor for detecting the rotation angle of the screw is arranged on one side of the screw, and the sensor is connected with a control computer of the flying probe testing equipment and used for sending the detected rotation angle of the screw to the control computer.
Furthermore, a position sensor is arranged on one side of the camera and used for detecting the position of the camera and sending the position to a control computer of the flying probe testing equipment.
Further, the support frame and the support arm are connected to the same moving assembly, and the relative positions of the support frame and the support arm are fixed; the movement assembly provides movement in a horizontal direction.
The invention also provides flying probe testing equipment comprising the camera assembly.
According to the camera assembly and the flying probe testing equipment comprising the camera assembly, the camera is transversely arranged, and the image of the circuit board to be tested is reflected to the camera by the reflector, so that the camera or the lens thereof can move for a large distance in the horizontal direction, the circuit boards with different thicknesses can be accurately focused, the camera assembly is suitable for testing the circuit boards with large thickness difference, and the acquired image has high precision and accurate data.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a camera assembly for a flying probe testing device according to the present invention.
Fig. 2 is a partial schematic structural diagram of another embodiment of a camera assembly for a flying probe testing device according to the present invention.
In the figure: 1. the camera comprises a support, 2, a camera, 3, a gear, 4, a rack, 5, a lens, 6, a moving assembly, 7, a support arm, 8, a probe, 9, a reflector, 10, a sliding block, 11, a threaded hole, 12, a screw rod, 13, a sliding rail, 14, a knob and 15, a dial.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
The invention relates to a camera assembly for flying probe test equipment, which comprises a probe 8 and a support arm 7 for mounting the probe 8, wherein the camera assembly comprises a support 1 arranged above the support arm, the support 1 is provided with a camera 2, at least a lens 5 of the camera 2 can move in the horizontal direction, a reflector 9 capable of reflecting an image of an object below the probe 8 to the lens 5 of the camera 2 is arranged above the probe 8, and the reflector 9 is mounted on the support 1. The angle between the reflecting surface of the reflector 9 and the horizontal plane is generally 45 degrees. According to the invention, the camera 2 is transversely arranged, and the image of the circuit board to be tested is reflected to the camera 2 by the reflector 9, so that the camera 2 or the lens 5 thereof can move for a larger distance in the horizontal direction, and thus, the circuit boards with different thicknesses can be precisely focused, the circuit board testing device is suitable for testing circuit boards with large thickness difference, and the acquired image has high precision and accurate data.
As shown in fig. 1, in this embodiment, the position of the imaging element (typically, a CCD (Charge-coupled device) or a CMOS (Complementary Metal Oxide Semiconductor)) of the camera 2 is not changed, but the lens 5 of the camera 2 is disposed on a rack 4 capable of sliding in the horizontal direction, and a gear 3 is disposed in cooperation with the rack 4, and the rack 4 is driven by the rotation of the gear 3 to move in the horizontal direction, so as to drive the lens 5 to approach or depart from the imaging element of the camera, and at the same time, to depart from or approach a reflective mirror, so that the objective distance can be adjusted within a certain range, so as to make the imaging quality clearer, the image alignment accurate, and improve the testing accuracy.
In this embodiment, the movement of the lens 5 may be manually performed or may be automatically performed by a motor or the like.
As shown in fig. 2, in this embodiment, a horizontal slide rail 13 is provided on the bracket 1, a slider 10 is provided on the slide rail 13, the slider 10 slides horizontally along the slide rail 13, and the camera 2 is mounted and fixed on the slider 10. The slider 10 drives the camera 2 to move on the slide rail 13 together, so that the camera 2 is integrally close to or far away from the reflective mirror 9, and accurate focusing on circuit boards with different thicknesses is realized. The structure has the advantages that: firstly, the distance between the lens 5 of the camera 2 and the imaging element is relatively fixed, so that the structure of the camera 2 is simplified, and the cost and the failure rate of the camera 2 are reduced; secondly, the whole movable distance of the camera 2 is far larger than the movable range of the single lens 5, so that the applicable circuit board range is wider.
In this embodiment, since the whole camera 2 moves, the position of the camera 2 relative to the probe 8 changes, and therefore the relative position between the two is corrected, that is, the position of the camera 2 after moving is sent to the control computer, so that the control computer can still accurately calculate the coordinates of the contact on the circuit board to be tested according to the image captured by the camera 2 after the camera 2 moves. Therefore, a position sensor (not shown) may be provided on the side of the camera 2 to detect the position of the camera 2 and send it to the control computer.
Preferably, a threaded hole 11 may be formed in the sliding block 2, a screw 12 is inserted through the threaded hole 11, threads on the screw 12 are matched with threads in the threaded hole 11, and the sliding block 10 is driven to slide on the sliding rail 13 by rotating the screw 12. Due to the structure of the screw 12, the slider 10 moves only a small distance (generally equal to the pitch) when the pitch of the screw 12 rotates once, so that the moving distance of the camera 2 can be precisely controlled. Rotating the screw 12 may be done manually, for example, a knob 14 may be provided at least one end of the screw 12, and rotating the knob 14 may rotate the screw 12 to control the movement of the camera 2. In this embodiment, in addition to the above-described embodiment in which the sensor is provided to directly detect the position of the camera, the screw 12 or the knob 14 may be provided with a dial 15 for indicating the rotation angle of the screw, the rotation angle of the screw 12 may be read by the dial 15, the moving distance of the camera 2 may be calculated from the rotation angle and the pitch of the screw 12, and the moving distance may be input to the control computer, so that the relative position between the camera 2 and the probe 8 may be corrected. Of course, a sensor for detecting the rotation angle of the screw 12 may be disposed on one side of the screw 12, the sensor is connected to a control computer of the flying probe testing device, the sensor automatically detects the rotation angle of the screw 12, and sends the detected rotation angle of the screw to the control computer.
In addition, the screw 12 can also be connected to a stepping motor through a transmission mechanism and driven by the stepping motor to rotate, and the stepping motor is connected with a control computer of the flying probe testing equipment. The stepping motor is controlled by the control computer to drive the screw rod to rotate, so that the camera 2 is driven to move, and automatic focusing is completed.
Preferably, the lens 5 of the camera 2 adopts a double cemented lens.
In one embodiment of the flying probe test device, a bracket 1 of a camera assembly and an arm 7 of a mounting probe 8 are connected to the same moving assembly 6, and the relative positions of the bracket 1 and the arm 7 are fixed; the motion assembly 6 provides movement in a horizontal direction (i.e., X, Y-way), while the arm 7 on which the probe 8 is mounted is also movable in a vertical direction (i.e., Z-way) relative to the motion assembly 6.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. The utility model provides a flying probe is camera subassembly for test equipment, flying probe test equipment includes the probe and is used for installing the support arm of probe, its characterized in that, camera subassembly is including setting up the support of support arm top, be provided with the camera on the support, at least the camera lens of camera can move on the horizontal direction, the probe top is provided with can reflect the image of the object of probe below to the reflector of the camera lens, the reflector is installed on the support.
2. The flying probe testing device camera assembly according to claim 1, wherein the lens of the camera is disposed on a rack slidable in a horizontal direction, and a gear is disposed in cooperation with the rack, and the rack is driven to move in the horizontal direction by rotation of the gear.
3. The flying probe test device camera assembly according to claim 1, wherein the bracket is provided with a horizontal slide rail, the slide rail is provided with a slide block, the slide block horizontally slides along the slide rail, and the camera is fixedly mounted on the slide block.
4. The camera assembly for flying probe test equipment according to claim 3, wherein the slider has a threaded hole, a screw rod passes through the threaded hole, threads on the screw rod are matched with threads in the threaded hole, and the slider is driven to slide on the slide rail by rotating the screw rod.
5. The flying probe testing device camera assembly of claim 4, wherein at least one end of the screw is provided with a knob, and the screw or the knob is provided with a dial for indicating the rotation angle of the screw.
6. The flying probe testing device camera assembly of claim 4, wherein the screw is connected to a stepper motor through a transmission mechanism and is driven to rotate by the stepper motor, and the stepper motor is connected with a control computer of the flying probe testing device.
7. The flying probe testing device camera assembly according to claim 3, 4 or 5, wherein a sensor for detecting the rotation angle of the screw is arranged on one side of the screw, and the sensor is connected with a control computer of the flying probe testing device and used for sending the detected rotation angle of the screw to the control computer.
8. The flying probe testing device camera assembly of claim 3, 4 or 5, wherein a position sensor is disposed on one side of the camera for detecting the position of the camera and sending the position to a control computer of the flying probe testing device.
9. The flying probe testing device camera assembly of claim 1, wherein the frame and arm are attached to the same moving assembly and the relative positions of the frame and arm are fixed; the movement assembly provides movement in a horizontal direction.
10. A flying probe testing apparatus incorporating a camera assembly according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910820150.XA CN110726669B (en) | 2019-08-31 | 2019-08-31 | Flying probe is camera subassembly and flying probe test equipment for test equipment |
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| CN201910820150.XA CN110726669B (en) | 2019-08-31 | 2019-08-31 | Flying probe is camera subassembly and flying probe test equipment for test equipment |
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| CN110726669A true CN110726669A (en) | 2020-01-24 |
| CN110726669B CN110726669B (en) | 2022-05-24 |
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Cited By (4)
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| CN113821011A (en) * | 2021-08-18 | 2021-12-21 | 北京机械设备研究所 | Steering engine servo electronic system batch test equipment and test method |
| CN113866587A (en) * | 2021-08-20 | 2021-12-31 | 苏州恒测电子科技有限公司 | Flying probe test equipment |
| CN114577180A (en) * | 2022-05-06 | 2022-06-03 | 成都纵横通达信息工程有限公司 | Geographic information mapping device, system and method based on unmanned aerial vehicle |
| CN116930559A (en) * | 2023-06-07 | 2023-10-24 | 苏州国科测试科技有限公司 | Flying probe test equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113821011A (en) * | 2021-08-18 | 2021-12-21 | 北京机械设备研究所 | Steering engine servo electronic system batch test equipment and test method |
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| CN113866587B (en) * | 2021-08-20 | 2024-05-24 | 苏州国科测试科技有限公司 | Flying probe test equipment |
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