Detection device

Abstract

The utility model provides a detection device, which relates to the technical field of product detection and specifically comprises a test camera obscura, a bearing jig, a pressure head and a driving device. The test camera obscura is an empty box, a side wall plate of the test camera obscura in a first direction is a first wall plate, the first wall plate is provided with a mounting port, and the inner wall surface of the test camera obscura is covered with a first light absorption material layer; the bearing jig is located on the outer side of the test camera obscura and fixed at the mounting port, and the bearing jig is provided with a test hole communicated with the test camera obscura; the pressure head is located on the outer side of the test camera obscura, is opposite to the mounting opening, can move in the first direction relative to the test camera obscura, and is used for being matched with the bearing jig to clamp the tested equipment; the driving device is located on the outer side of the testing camera obscura, fixed to the testing camera obscura and connected with the pressing head so as to drive the pressing head to move relative to the testing camera obscura. According to the detection device, the detection precision of the physical sign sensing sensor in the electronic equipment can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of product detection, in particular to a detection device. Background Art

[0002] Currently, electronic devices such as smart watches are equipped with vital sign sensing sensors to measure human blood pressure, heart rate, etc. In order to ensure the yield rate of electronic equipment shipments, it is necessary to perform performance tests on the vital sign sensing sensors inside the electronic equipment to intercept poor performance of the vital sign sensing sensors caused by operations related to the production process, such as light leakage inside the vital sign sensing sensors.

[0003] In the related art, a detection device is generally used to test the performance of a vital sign sensing sensor. However, the accuracy of the performance test of the vital sign sensing sensor by the detection device is low and needs to be further improved. Utility Model Content

[0004] In view of this, the present application provides a detection device, which is conducive to improving the detection accuracy of a vital sign sensing sensor inside an electronic device.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] The present application provides a detection device, including: a test dark box, a carrying fixture, a pressure head and a driving device. The test dark box is an empty box, a side wall plate of the test dark box in the first direction is a first wall plate, the first wall plate has a mounting opening, and the inner wall surface of the test dark box is covered with a first light absorbing material layer; the carrying fixture is located outside the test dark box and fixed at the mounting opening, and the carrying fixture has a test hole connected to the test dark box; the pressure head is installed outside the test dark box and opposite to the mounting opening, the pressure head is movable in the first direction relative to the test dark box, and the pressure head is used to cooperate with the carrying fixture to clamp the device under test; the driving device is located outside the test dark box and fixed to the test dark box, and the driving device is connected to the pressure head to drive the pressure head to move relative to the test dark box.

[0007] According to the detection device of the embodiment of the present application, the first light-absorbing material layer is set in the test dark box of the detection device, and the light emitted by the light transmitter to the inner wall of the test dark box will be absorbed by the first light-absorbing material layer, and will not reflect the light to the light receiver, or will reflect a very small part of the light. The ambient light intensity in the entire test dark box can be in a relatively low and stable state, so it will not interfere with the light received by the light receiver. Based on this, compared with the related art, the detection device of this embodiment has a simple structure, a short manufacturing cycle, and a low production line error rate. It does not need to use a shading structure to cover the light receiver to test the device under test, thereby avoiding the setting of the second clamping member and the shading structure in the related art, which is conducive to improving the accuracy of the test, improving the consistency of product testing, and also reducing the maintenance cost of the detection device.

[0008] In some embodiments of the present application, the light absorption rate of the first light absorbing material layer is greater than or equal to 80%. This is conducive to further reducing the light reflected by the first light absorbing material layer, maintaining the ambient light intensity in the entire test dark box at a relatively low and stable state, and improving the detection accuracy.

[0009] In some embodiments of the present application, the first light-absorbing material layer is made of light-absorbing foam or light-absorbing velvet, which are light-absorbing foam and light-absorbing velvet with the characteristics of light texture, low cost and good light-absorbing effect.

[0010] In some embodiments of the present application, the carrying fixture has a profiled groove similar to the shape of the device under test, and the test hole is located at the bottom wall of the profiled groove. In this way, on the one hand, it can play a positioning role, so as to facilitate the placement of the device under test and improve the detection efficiency; on the other hand, it can ensure that the device under test is placed in the correct position, so that the carrying fixture and the pressure head clamp the device under test, and prevent the device under test from being crushed due to incorrect placement of the device under test; on the other hand, it can prevent external light from entering the test dark box due to large differences in the contour or size between the device under test and the profiled groove, thereby reducing the detection error.

[0011] In some embodiments of the present application, the bearing fixture includes a bearing portion and a fixing portion, the bearing portion is located in the installation opening, the test hole is provided in the bearing portion, the fixing portion is fixed to the outer surface of the first wall plate and connected to the edge of the outer surface of the bearing portion, and the fixing portion and the bearing portion jointly define a contoured groove. In this way, the structure is simple, and external light can be prevented from entering the test dark box from the gap between the bearing portion and the installation opening, and the positioning and installation of the bearing fixture can also be facilitated.

[0012] In some embodiments of the present application, there are two fixing parts, which are located at opposite ends of the bearing part, and the two fixing parts are spaced apart in the circumferential direction of the bearing part to define two fastening notches. This arrangement makes it convenient to remove or place the device under test from the bearing fixture.

[0013] In some embodiments of the present application, the inner surface of the bearing portion is flush with the inner surface of the first wall plate, or the inner surface of the bearing portion is located on the inner surface of the first wall plate on the side close to the inside of the test dark box. This arrangement can prevent the light emitted by the light emitter from being reflected onto the inner peripheral wall of the installation opening during the detection process, so as not to affect the detection accuracy.

[0014] In some embodiments of the present application, the inner wall of the test hole is covered with a second light absorbing material layer. This arrangement can prevent the light emitted by the light transmitter from hitting the inner wall of the test hole during the detection process and being reflected by the inner wall of the test hole, thereby affecting the light signal received by the light receiver and improving the detection accuracy.

[0015] In some embodiments of the present application, an annular side plate is provided on the outer peripheral wall of the pressure head, and the annular side plate and the pressure head define an outer cover, and the vertical projection of the annular side plate on the first wall plate surrounds the outer periphery of the support fixture, and the annular side plate is suitable for contacting the outer surface of the first wall plate when the pressure head and the support fixture cooperate to clamp the device under test. In this way, on the one hand, the annular side plate and the pressure head can be enclosed into an outer cover to cover the support fixture and the device under test, thereby preventing external light from entering the test darkroom; on the other hand, the contact between the annular side plate and the outer surface of the first wall plate can also be used to limit the pressure head to prevent the pressure head from over-pressing the device under test.

[0016] In some embodiments of the present application, a receiving groove is provided on the outer surface of the first wall plate, and the mounting opening is located at the bottom wall of the receiving groove; the bearing fixture is fixed in the receiving groove, which is conducive to improving the compactness of the structure.

[0017] In some embodiments of the present application, an annular side plate is provided on the outer peripheral wall of the pressure head, and the annular side plate and the pressure head define an outer cover. The vertical projection of the annular side plate on the first wall plate is located in the receiving groove and surrounds the outer periphery of the supporting fixture. The annular side plate is suitable for contacting the bottom wall of the receiving groove when the pressure head and the supporting fixture cooperate to clamp the device under test. In this way, on the one hand, the annular side plate and the pressure head can be enclosed into an outer cover to cover the supporting fixture and the device under test, thereby preventing external light from entering the test darkroom; on the other hand, the contact between the annular side plate and the bottom wall of the receiving groove can also be used to limit the pressure head to prevent the pressure head from over-pressing the device under test. In other embodiments, the vertical projection of the annular side plate on the first wall plate can also surround the receiving groove.

[0018] In some embodiments of the present application, the annular side plate and the pressure head are integrally formed, which has the characteristics of simple process and easy forming.

[0019] In some embodiments of the present application, a flexible layer is provided on the surface of the pressure head facing the bearing fixture; and / or the pressure head is a flexible member. As a result, the pressure head will correct the position of the device under test under pressure and return it to its original position, further ensuring that the device under test is placed correctly, avoiding external light from entering the test darkroom due to incorrect product position, and interfering with the detection accuracy of the device under test; on the other hand, the provision of the flexible layer can also play a protective role, preventing the pressure head from over-pressing the device under test and causing damage to the device under test. The material of the flexible layer includes but is not limited to foam, rubber or silicone.

[0020] In some embodiments of the present application, the detection device further comprises a mounting bracket, the mounting bracket is fixed to the first wall plate; the driving device is a cylinder, the cylinder is mounted on the end of the mounting bracket away from the first wall plate, and the piston rod of the cylinder is connected to the pressure head. Thus, the structure is simple and easy to assemble.

[0021] In some embodiments of the present application, the detection device further includes a guide assembly, the guide assembly includes a first guide member and a second guide member, the first guide member is fixed to the mounting bracket, the second guide member is relatively fixed to the piston rod, and the first guide member and the second guide member are slidably matched. In this way, it is beneficial to use the cooperation between the second guide member and the first guide member to guide the movement of the pressure head in the Z direction, and prevent the pressure head from deviating from the preset trajectory during the movement and damaging the device under test.

[0022] Specifically, the second guide member includes a sliding portion and a connecting portion. The connecting portion is connected to the piston rod. The slider is connected to the side of the connecting portion. A groove is provided at one end of the slider facing the first guide member, and the first guide member is located in the groove.

[0023] In some embodiments of the present application, the detection device further includes a protective cover, which is arranged on the first wall plate and covers the pressure head, the bearing fixture and the driving device. In this way, the protective cover can be used to protect the pressure head, the driving device, the bearing fixture and the above-mentioned mounting bracket and other structures to prevent the detection device from being damaged by impact during transportation, etc., and is also conducive to improving the appearance of the detection device.

[0024] In some embodiments of the present application, the protective cover has a placement opening, which can facilitate placing the device under test into the carrying fixture or taking the device under test away.

[0025] In some embodiments of the present application, the protective cover includes: a first plate body and a side panel. The first plate body is in the shape of a flat plate. The first plate body is a plate body on the protective cover away from the first wall panel. The side panel is in the shape of a ring. The side panel is arranged around the edge of the first plate body. The placement port is provided on the side panel. Thus, the structure is simple. In some embodiments of the present application, a supporting partition is provided in the protective cover. The supporting partition is connected to the first plate body, and the supporting partition is connected to the opposite ends of the side panel, and the supporting partition can abut against the first wall panel. In this way, the supporting partition can play a role in supporting the protective cover to prevent the protective cover from being deformed due to long-term use.

[0026] In some embodiments of the present application, the support partition separates the space in the protective cover into a first installation space and a second installation space, wherein the installation bracket, the driving device, the pressure head, the bearing fixture, etc. are all located in the first installation space.

[0027] In some embodiments of the present application, in order to prevent the protective cover from restricting the movement of the piston rod in the first direction, a through hole is provided on the first plate, and the piston rod is passed through the through hole. In some embodiments of the present application, the detection device also includes a safety grating and a control module, the safety grating includes a transmitter and a receiver, the transmitter and the receiver are located at the placement port, and are arranged on opposite sides of the placement port; the control module is electrically connected to the safety grating and the drive device respectively. In this way, it is beneficial to improve the safety of the detection device and prevent personal injuries during the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of an electronic device provided in some embodiments of the present application;

[0029] Figure 2 A three-dimensional diagram of a watch body according to some embodiments of the present application;

[0030] Figure 3 An exploded view of a watch body according to some embodiments of the present application;

[0031] Figure 4a A schematic diagram of the principle of detecting human heart rate by an electronic device provided in some embodiments of the present application;

[0032] Figure 4b It is a pulse waveform diagram of the human body;

[0033] Figure 5 A schematic diagram of the principle of an electronic device detecting heart rate through a human finger provided in some embodiments of the present application;

[0034] Figure 6 A schematic diagram of an electronic device provided in some related technologies of this application;

[0035] Figure 7This is a schematic diagram of a detection device provided in some related technologies of this application;

[0036] Figure 8 A three-dimensional diagram of a detection device provided in some embodiments of the present application;

[0037] Fig. 9 Based on Figure 8 The schematic diagram of the cross-sectional structure of the detection device shown is at line AA;

[0038] Fig.10 Based on Figure 8 An exploded view of the first wall plate and the bearing fixture in the detection device shown;

[0039] Fig.11 Based on Fig.10 An assembly diagram of the first wall panel and the bearing fixture shown;

[0040] Fig.12 Based on Figure 8 The assembly diagram of the first wall plate, the bearing fixture, the pressure head, the mounting bracket and the driving device shown;

[0041] Fig.13 Based on Figure 8 A schematic diagram of the load-bearing fixture shown;

[0042] Fig.14 Based on Figure 8 The schematic diagram of the coordination between the carrier fixture and the device under test is shown;

[0043] Fig.15 Based on Fig.12 The structure shown is a schematic diagram of the cross-section structure at line BB;

[0044] Fig.16 Based on Fig.12 Assembly drawing of the mounting bracket, guide assembly, pressure head and drive device shown;

[0045] Fig.17 Based on Figure 8 An assembly drawing showing one perspective of the protective cover, mounting bracket, guide assembly, pressure head and drive device shown;

[0046] Fig.18 Based on Figure 8 An assembly drawing showing another view of the protective cover, mounting bracket, guide assembly, pressure head and drive device shown;

[0047] Fig.19 An electrical control diagram of a detection device provided in some embodiments of the present application;

[0048] Reference numerals:

[0049] 100a, detection device; 1a, test box; 4a, second pressing member; 1a11, opening; 7a, light shielding structure;

[0050] 100. Detection device; 1. Test dark box; 11. First wall plate; 111. Installation port; 112. Accommodation groove; 113. First light-absorbing material layer; 2. Carrying fixture; 21. Profiling groove; 22. Fixing part; 23. Carrying part; 24. Test hole; 241. Second light-absorbing material layer; 25. Holding notch; 31. Press head; 32. Annular side plate; 4. Driving device; 41. Piston; 5. Mounting bracket; 6. Guide assembly; 61. First guide member; 62. Second guide member; 621. Sliding part; 622. Connecting part; 7. Protective cover; 71. First plate body; 711. Through hole; 72. Side panel; 73. Support partition; 74. First installation space; 75. Second installation space; 76. Placement port; 8. Safety grating; 81. Transmitter; 82. Receiver; 9. Control module; Q. Control button;

[0051] 200, skin; 300, artery; 400, muscle tissue;

[0052] 500, electronic device; 501, watch body; 5011, display module; 50111, display screen; 50112, light-transmitting cover; 5012, shell assembly; 50121, shell; 501211, protrusion; 501212, main body; 50122, cover; 50123, accommodating space; 5013, vital sign sensing sensor; 50131, light transmitter; 50132, light receiver; 50133, shading member; 5014, circuit board; 502, strap; 5021, first strap part; 50211, first locking part; 5022, second strap part; 50221, second locking part. DETAILED DESCRIPTION

[0053] In the embodiments of the present application, the terms "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0054] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0055] In the description of the embodiments of the present application, the term "at least one" refers to one or more, and "plurality" refers to two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be single or multiple.

[0056] In the description of the embodiments of the present application, the term "and / or" refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" is a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present application generally indicates that the associated objects before and after are in an "or" relationship.

[0057] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. In addition, the directional terms mentioned in the embodiments of the present application, such as "inside", "outside", etc., are only references to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0058] In the description of the embodiments of the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0059] Before introducing the detection device of the present application, the electronic device detected by the detection device of the present application and the specific structure and working principle of the electronic device are first described. The electronic device includes but is not limited to wearable devices such as smart watches, smart bracelets, smart glasses and smart clothes, medical devices such as medical detectors and vital sign detectors, mobile phones, tablet computers, notebook computers, laptop computers, personal digital assistants (PDAs), personal computers, smart TVs, vehicle-mounted devices and other terminal devices, as well as electronic products such as digital cameras, walkmans, and radios.

[0060] See also Figure 1 , Figure 1 A schematic diagram of the structure of an electronic device 500 provided in some embodiments of the present application. In this embodiment and the following embodiments, the electronic device 500 is exemplified as a smart watch, which cannot be regarded as a special limitation on the structure of the electronic device 500. The electronic device 500 includes a watch body 501 and a watch strap 502, wherein the watch body 501 is used to realize the main functions of the electronic device 500, and the watch strap 502 is used to wear the watch body 501 on the wrist of a human body.

[0061] The watchband 502 may include a first watchband portion 5021 and a second watchband portion 5022, one end of the first watchband portion 5021 and one end of the second watchband portion 5022 being connected to both ends of the watch body 501. A first locking portion 50211 is provided at the other end of the first watchband portion 5021, and a second locking portion 50221 is provided at the other end of the second watchband portion 5022. The first locking portion 50211 and the second locking portion 50221 are detachably locked to each other so that the watch body 501 can be worn on a human wrist.

[0062] See also Figures 2 to 3 , Figure 2 This is a three-dimensional diagram of a watch body 501 of some embodiments of the present application. Figure 3 The exploded view of the watch body 501 of some embodiments of the present application. The watch body 501 may include a display module 5011, a housing component 5012, a vital sign sensing sensor 5013 and a circuit board 5014.

[0063] In some embodiments, the watch body 501 is roughly disc-shaped. In some other embodiments, the watch body 501 can also be roughly elliptical, triangular, polygonal, or rectangular, which is not specifically limited here.

[0064] The display module 5011 is used to display images, videos, etc. The display module 5011 may include a light-transmitting cover plate 50112 and a display screen 50111. The light-transmitting cover plate 50112 is stacked and fixedly connected with the display screen 50111. The light-transmitting cover plate 50112 is mainly used to protect the display screen 50111 and prevent dust. The material of the light-transmitting cover plate 50112 includes, but is not limited to, glass.

[0065] The housing assembly 5012 may include a cover plate 50122 and a housing 50121. The cover plate 50122 has a light-transmitting area. The cover plate 50122 may be stacked and spaced apart from the display module 5011, and the cover plate 50122 may contact the human skin 200. The housing 50121 may surround the outer periphery of the cover plate 50122, the housing 50121 may be located between the cover plate 50122 and the display module 5011, and the cover plate 50122 is fixed to the housing 50121. The display module 5011, the housing 50121 and the cover plate 50122 enclose a receiving space 50123, and the receiving space 50123 receives the circuit board 5014, the vital sign sensing sensor 5013, etc.

[0066] In some embodiments, the housing 50121 may include a main body 501212 and a protrusion 501211 extending from the main body 501212 toward the cover 50122, and the cover 50122 is covered on the protrusion 501211. Thus, the cover 50122 is convenient for contacting with human skin 200, which is beneficial to increase the contact area between the electronic device 500 and the human skin 200, thereby facilitating the improvement of the detection accuracy of the electronic device 500 for human health.

[0067] The circuit board 5014 is a carrier for realizing electrical connection of electronic components, and the circuit board 5014 is located in the accommodation space 50123. It can be understood that the circuit board 5014 can be a hard circuit board, a flexible circuit board, or a hard-soft combined circuit board.

[0068] The vital sign sensing sensor 5013, for example, a photoplethysmograph (PPG) sensor, is fixed to the circuit board 5014 and is located in the protrusion 501211. The vital sign sensing sensor 5013 includes a light emitter 50131 and a light receiver 50132. The light emitter 50131 and the light receiver 50132 can both be arranged on the circuit board 5014. The light emitted by the light emitter 50131 can be emitted to the human body through the light-transmitting area on the cover 50122. The light emitter 50131 can emit red light, green light, infrared light, etc. The red light can detect the blood oxygen of the human body, the green light can detect the heart rate, and the infrared light can detect the body temperature of the human body. Exemplarily, the light emitter 50131 can be at least one of a light emitting diode (LED), an organic light emitting diode, and a laser transmitter 50131 (transmitter optical, to).

[0069] The light receiver 50132 may be spaced apart from the light transmitter 50131. The light receiver 50132 may receive light reflected by a human body or ambient light. Exemplarily, the light receiver 50132 may be at least one of a photodiode (PD), a phototube, a photomultiplier tube, a photoresistor, and a phototriode.

[0070] Specifically, see Figure 4a , Figure 4b and Figure 5 , Figure 4a A schematic diagram of the principle of detecting human heart rate by an electronic device 500 provided in some embodiments of the present application; Figure 4b It is a pulse waveform diagram of the human body; Figure 5 The schematic diagram of the principle of the electronic device 500 provided in some embodiments of the present application to detect the heart rate through the human finger. Figure 4b The left side of point A is the systolic period, and the right side of point A is the diastolic period. Figure 4a and 4b It can be seen that the contraction and relaxation of the heart can cause the pulse to beat. Taking the electronic device 500 detecting the heart rate of a human body as an example, the light emitted by the light emitter 50131 in the electronic device 500 is directed to the human skin 200, and the light passes through the muscle tissue 400, artery 300 and vein ( Figure 4a , Figure 4b and Figure 5(not shown in the figure), part of the light is absorbed by the muscle tissue 400, artery 300 and vein in the human skin 200, and the other part of the light is reflected by the muscle tissue 400, artery 300 and vein in the human skin 200, and the reflected light is received by the light receiver 50132. Since the absorption of light by muscle tissue 400, bones, veins and other tissues is basically unchanged (if the measurement site does not move significantly), the artery 300 will be different. Since the blood in the artery 300 is flowing, the absorption of light will naturally change. Therefore, when the light receiver 50132 converts the optical signal of the reflected light into an electrical signal, since the absorption of light by the artery 300 changes while the absorption of light by other tissues remains basically unchanged, the light receiver 50132 converts the optical signal of the light reflected from the artery 300 into an alternating current (AC) signal, and the light receiver 50132 converts the optical signal of the light reflected from other tissues into a direct current (DC) signal. The AC signal reflects the characteristics of blood flow, thereby obtaining a pulse waveform, and then calculating the heart rate, so that the electronic device 500 can detect the heart rate.

[0071] In order to prevent the light transmitter 50131 from leaking light, causing the light to enter the light receiver 50132 directly without passing through the human skin 200, and to ensure that the light received by the light receiver 50132 is the reflected light of the light transmitter 50131, please refer to Figure 6 , Figure 6 A schematic diagram of an electronic device 500 provided for some related technologies of the present application. The vital sign sensing sensor 5013 also includes a shading member 50133. For example, the shading member 50133 is a sealing foam, and the shading member 50133 is arranged between the light emitter 50131 and the light receiver 50132. In order to simplify the installation, the shading member 50133 is usually pasted between the light emitter 50131 and the light receiver 50132. However, due to the problem of the shading member 50133 being assembled offset, missing, or not pasted tightly, the light emitted by the light emitter 50131 may be directly leaked to the light receiver 50132, which may interfere with the useful light signal during the heart rate test, thereby affecting the heart rate algorithm calculation and causing inaccurate heart rate test.

[0072] In order to solve the above technical problems, in some related technologies, a detection device 100a is provided. Figure 7 , Figure 7 This is a schematic diagram of a detection device 100a provided in some related technologies of this application. To facilitate the distinction from the external structure of the test box 1a, the internal structure of the test box 1a is indicated by a dotted line. The detection device 100a includes a test box 1a, a first pressing member ( Figure 7The test box 1a is provided with an opening 1a11. The first pressing member is located outside the test box 1a. The second pressing member 4a is located inside the test box 1a, and the second pressing member 4a is movable relative to the test box 1a. Exemplarily, a cylinder can be used to drive the second pressing member 4a to move. A light shielding structure 7a is provided on the second pressing member 4a, for example, a light shielding foam.

[0073] When a good electronic device 500 is placed at the opening 1a11 outside the test box 1a, the physical sign sensing sensor 5013 faces the inside of the test box 1a, and the light intensity received by the light receiver 50132 when the light shielding structure 7a covers the light receiver 50132 and the light transmitter 50131 is not turned on is defined as the ambient light reference value. In the specific test process, the first clamping member is located on the side of the electronic device 500 under test that is away from the test box 1a, and is pressed against the electronic device 500 under test. The second clamping member 4a moves to the light shielding structure 7a to cover the light receiver 50132 to prevent interference from external ambient light. The light transmitter 50131 emits light into the test box 1a. The light receiver 50132 is blocked by the light shielding structure 7a and cannot receive the useful light signal normally reflected by the light transmitter 50131. At this time, it means that the pasting position of the light shielding member 50133 in the electronic device 500 under test is correct and there is no light leakage problem. When the intensity of the light signal received by the light receiver 50132 exceeds the ambient light reference value, it can be determined that the vital sign sensing sensor 5013 is leaking light, the pasting position of the light shielding member 50133 is incorrect, or the light shielding member 50133 is not pasted.

[0074] However, the above detection device 100a has the following problems:

[0075] 1. The shading structure 7a on the second clamping member 4a is used to support the optical receiver 50132 when the second clamping member 4a moves upward. Since the test products are frequently replaced in the production line test, for the solution using foam as the shading structure 7a, the shading structure 7a will be repeatedly compressed and deformed, resulting in poor shading effect, poor test accuracy, and affecting the consistency of the production line test.

[0076] 2. The shading structure 7a on the second clamping member 4a is relatively close to the light emitter 50131. The shading structure 7a itself increases the reflective surface, which will also affect the accuracy of light leakage judgment of the vital sign sensing sensor 5013 inside the electronic device 500, thereby affecting the consistency of production line testing.

[0077] 3. The accuracy of the first clamping member and the second clamping member 4a will deteriorate after long-term use, which will also lead to poor test accuracy and affect the test consistency of the production line. Therefore, the first clamping member and the second clamping member 4a need to be maintained frequently and replaced regularly. Even so, the production line misdetection rate is still above 1%, and the effect is relatively poor; moreover, the maintenance cost is high.

[0078] In order to solve the technical problems existing in the above-mentioned related technologies, the present application provides a detection device 100. The detection device 100 is used to detect whether the vital sign sensing sensor 5013 of the electronic device 500 is leaking light, and whether the light receiver 50132 and the light transmitter 50131 are faulty. For the convenience of explanation, the electronic device 500 is referred to as the device under test. For details, please refer to Figure 8 , Figure 8 This is a three-dimensional diagram of a detection device 100 in some embodiments of the present application. In this embodiment, the detection device 100 includes: a test dark box 1, a carrying fixture 2, a pressing head 31 and a driving device 4.

[0079] Understandably, Figure 8 Only some components of the detection device 100 are schematically shown, and the actual shapes, sizes, positions and structures of these components are not subject to the present invention. Figure 8 and the restrictions that follow.

[0080] The test dark box 1 is a closed empty box. The test dark box 1 has the characteristic of being sealed, which is conducive to ensuring that the ambient light intensity inside the test dark box 1 is constant, thereby ensuring the detection accuracy of the device under test.

[0081] Specifically, in the detection device 100, the length, width and height of the test dark box 1 are d1, d2 and d3 respectively. For example, the value range of d1 is 30 centimeters (cm) to 150 cm, the value range of d2 is 30 cm to 150 cm, and the value range of d3 is 50 cm to 120 cm. For example, the length, width and height of the test dark box 1 are 50 cm, 50 cm and 100 cm respectively. In this way, the height of the test dark box 1 is level with the production workbench, which is convenient for operation and improves the efficiency of detection. In other examples, the size of the test dark box 1 can also be larger or smaller, and this application does not make specific restrictions on this.

[0082] The shape of the test dark box 1 includes but is not limited to a cube, a triangular prism, a cylinder or a special-shaped column. Figure 8 The shape of the test dark box 1 is a cube. The material of the test dark box 1 includes but is not limited to metal or plastic.

[0083] In order to facilitate the description of the following embodiments, an XYZ coordinate system is established for the detection device 100. Specifically, the height direction of the test dark box 1 is defined as the Z-axis direction (i.e., the first direction), and the directions perpendicular to the Z-axis are the X-axis direction and the Y-axis direction, respectively, and the X-axis direction is perpendicular to the Y-axis direction. Exemplarily, in the actual use of the detection device 100, the Z-axis direction is the up-down direction, the X-axis direction can be the left-right direction, and the Y-axis direction can be the front-back direction.

[0084] See also Fig. 9 , Fig. 9 Based on Figure 8 The schematic diagram of the cross-sectional structure of the detection device 100 at the AA line is shown. The inner wall surface of the test dark box 1 is covered with a first light absorbing material layer 113, and the first light absorbing material layer 113 is used to absorb the light in the test dark box 1. Specifically, the first light absorbing material layer 113 completely covers the inner wall of the test dark box 1, ensuring that the inner wall of the test dark box 1 has no reflection on the light source, so that the light environment in the test dark box 1 is constant.

[0085] The connection method between the first light absorbing material layer 113 and the inner wall surface of the test dark box 1 includes but is not limited to adhesive connection.

[0086] See also Fig.10 , and combined with Figure 8 , Fig.10 Based on Figure 8 An exploded view of the first wall panel 11 and the supporting fixture 2 in the detection device 100 shown. The test dark box 1 includes a first wall panel, a second wall panel, a third wall panel, a fourth wall panel, a fifth wall panel and a sixth wall panel. Among them, the side wall panel of the test dark box 1 along the Z-axis direction is the first wall panel 11, and the other side wall panel of the test dark box 1 along the Z-axis direction is the second wall panel. The third wall panel and the fourth wall panel are opposite in the X-axis direction. The fifth wall panel and the sixth wall panel are opposite in the Y-axis direction. The connection method between any two adjacent wall panels includes but is not limited to clamping, gluing, welding, or screw connection.

[0087] Please continue reading Fig.10 The first wall plate 11 is provided with an installation opening 111, and the installation opening 111 penetrates the first wall plate 11 along the thickness direction of the first wall plate 11. The shape of the installation opening 111 includes but is not limited to a circular, square, oval or special shape.

[0088] The support fixture 2 is used to support the device under test. Fig.10 and Fig.11 ,in, Fig.11 Based on Fig.10 The assembly diagram of the first wall plate 11 and the supporting fixture 2 is shown. The supporting fixture 2 is located outside the test dark box 1, and the supporting fixture 2 is fixedly connected to the outer surface of the first wall plate 11 (the outer surface refers to the surface facing away from the inner side of the test dark box 1), and is fixed at the installation opening 111. The fixing method between the supporting fixture 2 and the first wall plate 11 includes but is not limited to bolt connection, welding connection, and adhesive connection.

[0089] Exemplarily, the support fixture 2 is detachably mounted on the first wall plate 11. If the support fixture 2 fails or is damaged during use, the user can directly remove the support fixture 2 for replacement or repair without removing the first wall plate 11. Therefore, it has the characteristics of easy replacement and repair. Exemplarily, in order to realize the detachable installation of the support fixture 2 on the first wall plate 11, the support fixture 2 and the first wall plate 11 can be connected by means of clamping, bolting, magnetic attraction, etc.

[0090] Please continue reading Fig.10 and Fig.11 , the carrying fixture 2 has a test hole 24. Specifically, the carrying fixture 2 has a test hole 24 on the inner peripheral side of the mounting opening 111, and the test hole 24 is connected to the test dark box 1. The shape of the test hole 24 includes but is not limited to a circle, a triangle, a square or a special shape. The protrusion 501211 of the device under test can be accommodated in the test hole 24.

[0091] See also Fig.12 , Fig.12 Based on Figure 8 The assembly diagram of the first wall plate 11, the carrying fixture 2, the pressure head 31 and the driving device 4 is shown. The pressure head 31 is located outside the test dark box 1 and is installed on the test dark box 1. Specifically, the pressure head 31 is installed on the first wall plate 11. The pressure head 31 is opposite to the installation port 111. The pressure head 31 is movable in the Z-axis direction relative to the test dark box 1. The pressure head 31 is used to cooperate with the carrying fixture 2 to clamp the device under test.

[0092] The driving device 4 is arranged outside the test dark box 1 and fixed to the test dark box 1. Specifically, the driving device 4 is fixed to the first wall plate 11. The driving device 4 is connected to the pressure head 31. The connection method between the driving device 4 and the pressure head 31 includes but is not limited to threaded connection, welding connection, clamping connection or adhesive connection.

[0093] The driving device 4 is used to drive the pressure head 31 to move in the Z-axis direction. In this way, when the device under test is placed on the carrier fixture 2, the driving device 4 drives the pressure head 31 to move in the direction close to the carrier fixture 2, so that the pressure head 31 and the carrier fixture 2 cooperate to clamp the device under test, so as to facilitate the test of the device under test; when the device under test is tested, the driving device 4 drives the pressure head 31 to move away from the carrier fixture 2, so as to facilitate the placement of the device under test.

[0094] With reference to the above-mentioned connection relationship and position relationship, the detection process of the device under test by the detection device 100 in the embodiment of the present application is specifically as follows: the end of the device under test with the protrusion 501211 is oriented toward the supporting fixture 2, and the device under test is placed in the supporting fixture 2. At this time, the protrusion 501211 of the device under test is placed in the test hole 24.

[0095] Then, the control driving device 4 drives the pressure head 31 to move to the preset position in the direction close to the supporting fixture 2, so that the pressure head 31 and the supporting fixture 2 cooperate to clamp the device under test. When the protrusion 501211 of the device under test is placed in the test hole 24, the device under test can block the test hole 24, so that the supporting fixture 2 and the device under test cooperate to block the installation port 111 to prevent the external ambient light from entering the test dark box 1. The vital sign sensing function on the device under test is enabled, and the light transmitter 50131 is controlled to start emitting light signals into the test dark box 1. At this time, the light emitted to the inner wall of the test dark box 1 will be absorbed by the first light absorbing material layer 113, and will not reflect the light to the light receiver 50132, or will reflect a very small part of the light. The ambient light intensity in the entire test dark box 1 can be in a relatively low and stable state, so it will not interfere with the light received by the light receiver 50132. When the current ambient light intensity received by the optical receiver 50132 is greater than the preset threshold, it can be determined that there is light leakage inside the device under test, and the light shielding member 50133 inside the device under test has problems such as assembly deviation or missing. When the current ambient light intensity received by the optical receiver 50132 is the light reference value, it can be determined that the optical transmitter 50131 is not emitting light, and the optical transmitter 50131 of the device under test is faulty.

[0096] It can be understood that, for the device under test in which the vital sign sensing sensor 5013 works normally and the light shielding member 50133 is attached normally, when the light emitter 50131 is not controlled to emit light, the ambient light intensity received by the light receiver 50132 in the device under test is only the light signal in the test dark box 1. Under the action of the first light absorbing material layer 113, the ambient light intensity in the test dark box 1 is in a relatively constant state, and the ambient light intensity received by the light receiver 50132 can be used as a light reference value. In other examples, multiple devices under test can also be tested separately to obtain the ambient light intensity, and the average value of the ambient light intensity measured by different devices under test is used as the light reference value. When the light emitter 50131 emits light, the ambient light intensity received by the light receiver 50132 in the device under test is the light reference value and a very small part of the reflected ambient light intensity of the light emitter 50131 reflected by the first light absorbing material layer 113. Therefore, before actually performing light leakage detection on the device under test, the reflected ambient light intensity and the light reference value can be obtained by testing the device under test with the vital sign sensing sensor 5013 working normally and the shading piece 50133 attached normally, and then the sum of the reflected ambient light intensity and the light reference value is used as the preset threshold.

[0097] Through the above detection process, it can be found that due to the setting of the first light-absorbing material layer 113 in the test dark box 1, the light emitted by the light emitter 50131 to the inner wall of the test dark box 1 will be absorbed by the first light-absorbing material layer 113, and will not reflect the light to the light receiver 50132, or will reflect a very small part of the light. The ambient light intensity in the entire test dark box 1 can be in a relatively low and stable state, so it will not interfere with the light received by the light receiver 50132. Based on this, compared with the related art, the detection device 100 has a simple structure, a short manufacturing cycle, and a low production line error rate. It is not necessary to use the shading structure 7a to cover the light receiver 50132 to test the device under test, thereby avoiding the setting of the second clamping member 4a and the shading structure 7a in the related art, which is conducive to improving the accuracy of the test, improving the consistency of product testing, and also reducing the maintenance cost of the detection device 100.

[0098] In combination with the above description, it can be found that the first light absorbing material layer 113 plays a key role in adjusting the light environment in the test dark box 1. Therefore, the higher the absorbance of the first light absorbing material layer 113, the better. In some embodiments, the absorbance of the first light absorbing material layer 113 is greater than or equal to 80%. Exemplarily, the absorbance of the first light absorbing material layer 113 is 80%, 81%, 82%, 83%, 85%, 86%, 88%, 89%, 90%, 92%, 94%, 96%, 98% or 99%.

[0099] In this way, it is helpful to further reduce the light reflected by the first light absorbing material layer 113, maintain the ambient light intensity in the entire test dark box 1 at a relatively low and stable state, and improve the detection accuracy.

[0100] In some embodiments of the present application, the first light-absorbing material layer 113 is made of light-absorbing foam or light-absorbing velvet. The light-absorbing foam or light-absorbing velvet is preferably black. The light-absorbing foam and light-absorbing velvet are light in texture, low in cost, and have good light-absorbing effect.

[0101] In some embodiments of this application, please refer to Fig.13 and Fig.14 , Fig.13 Based on Figure 8 A schematic diagram of the supporting fixture 2 is shown. Fig.14 Based on Figure 8The schematic diagram of the cooperation between the carrier jig 2 and the device under test is shown. The carrier jig 2 has a profiling groove 21 similar to the shape of the device under test. The test hole 24 is located at the bottom wall of the profiling groove 21. The profiling groove 21 is similar to the shape of the device under test, and the device under test can be inserted into the carrier jig 2 according to a preset shape. On the one hand, it can play a positioning role, so as to facilitate the placement of the device under test and improve the detection efficiency; on the other hand, it can ensure that the device under test is placed in the correct position, so that the carrier jig 2 and the pressure head 31 can clamp the device under test, and prevent the device under test from being crushed due to incorrect placement of the device under test; on the other hand, it can avoid external light from entering the test darkroom 1 due to large differences in contour or size between the device under test and the profiling groove 21, thereby reducing the detection error.

[0102] In some embodiments of this application, please continue to refer to Fig.13 and Fig.14 The bearing fixture 2 includes a bearing portion 23 and a fixing portion 22. The test hole 24 is provided in the bearing portion 23. The fixing portion 22 is connected to the edge of the outer surface of the bearing portion 23, and the fixing portion 22 and the bearing portion 23 jointly define a contoured groove 21. As a result, the structure is simple.

[0103] The outer surface of the bearing portion 23 refers to the surface facing away from the inside of the test dark box 1. When the device under test is placed in the profiling groove 21, a portion of the profiling groove 21 provided in the fixing portion 22 is used to accommodate the housing 50121 of the device under test, and another portion of the profiling groove 21 provided in the bearing portion 23 is used to accommodate a portion of the cover plate 50122 of the device under test.

[0104] For example, please refer to Fig.13 and Fig.14 There are two fixing parts 22, and the two fixing parts 22 are located at opposite ends of the bearing part 23, for example, they can be opposite ends in the Y-axis direction, or opposite ends in the X-axis direction. The two fixing parts 22 are arranged at intervals in the circumferential direction of the bearing part 23 to define two fastening notches 25, and the fastening notches 25 are provided to facilitate the removal or placement of the device under test from the bearing fixture 2. In other examples, there is one fixing part 22, and it is annular.

[0105] See also Fig.15 , Fig.15 Based on Fig.12 The structure shown is a schematic cross-sectional view of the structure at line BB. The bearing portion 23 is located in the mounting opening 111 .

[0106] The fixing part 22 is fixed to the outer surface of the first wall plate 11. The connection method between the fixing part 22 and the first wall plate 11 includes but is not limited to threaded connection, welding connection, and adhesive connection. Specifically, the surface of the fixing part 22 facing away from the pressure head 31 is connected to the outer surface of the first wall plate 11. During the pressing process of the pressure head 31, when the device under test and the fixing part 22 are subjected to downward pressure, the first wall plate 11 provides an upward supporting force to the fixing part 22, thereby achieving a force balance.

[0107] The bearing portion 23 extends into the installation opening 111. In this way, on the one hand, the bearing portion 23 is arranged in the installation opening 111, and the fixing portion 22 is fixed to the outer surface of the first wall plate 11, so that the fixing portion 22 can be used to cover the gap between the bearing portion 23 and the installation opening 111, preventing external light from entering the test dark box 1 from the gap between the bearing portion 23 and the installation opening 111; on the other hand, it can also facilitate the positioning and installation of the bearing fixture 2. In some specific examples, the circumferential contour of the bearing portion 23 is the same as the contour and size of the inner circumferential surface of the installation opening 111, which is conducive to reducing the gap size between the bearing portion 23 and the installation opening 111, and preventing external light from entering the test dark box 1 from the gap between the bearing portion 23 and the installation opening 111.

[0108] In some specific examples, the inner surface of the bearing portion 23 is flush with the inner surface of the first wall plate 11, or the inner surface of the bearing portion 23 is located on the inner surface of the first wall plate 11, which is close to the inside of the test dark box 1. This arrangement can prevent the light emitted by the light emitter 50131 from being reflected onto the inner peripheral wall of the installation opening 111 during the detection process, so as not to affect the detection accuracy.

[0109] In some specific examples, the inner wall of the test hole 24 is covered with a second light absorbing material layer 241. This arrangement can prevent the light emitted by the light emitter 50131 from hitting the inner wall of the test hole 24 during the detection process and being reflected by the inner wall of the test hole 24, thereby affecting the light signal received by the light receiver 50132 and improving the detection accuracy.

[0110] The light absorption rate and material of the second light absorption material layer 241 may refer to the first light absorption material layer 113 mentioned above, and will not be described in detail here.

[0111] In some specific examples, the depth dimension of the test hole 24 is less than or equal to the height of the protrusion 501211. In this way, when the device under test is placed on the supporting fixture 2, the protrusion 501211 of the device under test can be flush with the inner surface of the supporting portion 23, or the surface of the protrusion 501211 facing the inside of the test dark box 1 is located on the side of the inner surface of the supporting portion 23 close to the inside of the test dark box 1, thereby preventing the light emitted by the optical transmitter 50131 from hitting the inner peripheral wall of the test hole 24 during the detection process and being reflected by the inner peripheral wall of the test hole 24, affecting the optical signal received by the optical receiver 50132, and improving the detection accuracy.

[0112] In some embodiments of this application, please refer to Fig.10 and Fig.11 , a receiving groove 112 is provided on the outer surface of the first wall plate 11, wherein the outer surface of the first wall plate 11 refers to the surface facing away from the inside of the test dark box 1. The mounting opening 111 is located at the bottom wall of the receiving groove 112. The supporting fixture 2 is fixed in the receiving groove 112. In this way, it is helpful to improve the compactness of the structure. Of course, the present application is not limited to this. In other examples, the receiving groove 112 may not be provided on the first wall plate 11.

[0113] See also Fig.12 An annular side plate 32 is provided on the outer peripheral wall of the pressure head 31, and the vertical projection of the annular side plate 32 on the first wall plate 11 is located in the receiving groove 112, and surrounds the outer periphery of the supporting fixture 2. In this way, when the pressure head 31 cooperates with the supporting fixture 2 to clamp the device under test, the annular side plate 32 contacts the bottom wall of the receiving groove 112. The setting of the annular side plate 32, on the one hand, can enclose an outer cover with the pressure head 31 to cover the supporting fixture 2 and the device under test, thereby preventing external light from entering the test darkroom 1; on the other hand, the contact between the annular side plate 32 and the bottom wall of the receiving groove 112 can also be used to limit the pressure head 31, so as to prevent the pressure head 31 from over-pressing the device under test.

[0114] Exemplarily, the annular side plate 32 and the pressure head 31 are an integrally formed part, which has the characteristics of simple process and easy molding.

[0115] In some embodiments, a flexible layer is provided on the surface of the pressure head 31 facing the support fixture 2. When the device under test in the support fixture 2 is unevenly placed, the pressure head 31 presses the device under test, and the flexible layer in the pressure head 31 is subjected to a downward force. The flexible layer will correct the position of the device under test under the pressure, so that it returns to its original position, further ensuring that the device under test is placed correctly, avoiding external light from entering the test darkroom 1 due to incorrect product position, and interfering with the detection accuracy of the device under test; on the other hand, the setting of the flexible layer can also play a protective role, preventing the pressure head 31 from over-pressing the device under test and causing damage to the device under test. The material of the flexible layer includes but is not limited to foam, rubber or silicone.

[0116] Of course, the present application is not limited to this. In some other embodiments, the flexible layer may not be set, but the pressure head 31 may be set as a flexible part. When the placement position of the device under test in the supporting fixture 2 is uneven, when the pressure head 31 presses the device under test, the flexible pressure head 31 will correct the position of the device under test under the action of pressure and return it to its original position, thereby further ensuring that the device under test is placed correctly and avoiding external light from entering the test darkroom 1 due to incorrect product position, thereby interfering with the detection accuracy of the device under test. On the other hand, the flexible pressure head 31 can play a protective role to prevent the pressure head 31 from over-pressing the device under test and causing damage to the device under test.

[0117] In some embodiments of this application, please continue to refer to Fig.12 The detection device 100 further includes a mounting bracket 5. The mounting bracket 5 is fixed to the first wall plate 11. The driving device 4 is a cylinder, which is arranged at one end of the mounting bracket 5 away from the first wall plate 11, and is arranged on one side of the mounting bracket 5 in the Y-axis direction. The piston rod 41 of the cylinder has the function of telescoping up and down, and the piston rod 41 is connected to the pressure head 31. When the cylinder is working, the piston rod 41 can drive the pressure head 31 to telescope in the Z-axis direction, thereby driving the pressure head 31 to rise and fall. Therefore, the structure is simple and easy to assemble.

[0118] In some embodiments of this application, please continue to refer to Fig.12 , the detection device 100 further includes a guide assembly 6. The guide assembly 6 includes a first guide member 61 and a second guide member 62. The first guide member 61 is fixedly connected to the mounting bracket 5. The second guide member 62 is relatively fixed to the piston rod 41. Exemplarily, the second guide member 62 can be directly fixedly connected to the piston rod 41. Also exemplary, the second guide member 62 can also be directly fixedly connected to the pressure head 31.

[0119] The second guide member 62 and the first guide member 61 can slide relative to each other in the Z-axis direction. In this way, the cooperation between the second guide member 62 and the first guide member 61 is beneficial for guiding the movement of the pressure head 31 in the Z-direction, thereby preventing the pressure head 31 from deviating from the preset track during the movement and damaging the device under test.

[0120] For details, please refer to Fig.16 , Fig.16 Based on Fig.12 The assembly diagram of the mounting bracket 5, the guide assembly 6, the pressure head 31 and the driving device 4 is shown. The second guide member 62 includes a sliding portion 621 and a connecting portion 622. The connecting portion 622 is connected to the piston rod 41. The sliding portion 621 is connected to the side of the connecting portion 622. A groove is provided at one end of the sliding portion 621 facing the first guide member 61, and the first guide member 61 is located in the groove.

[0121] In some embodiments of this application, please refer to Fig.17 , Fig.17 Based on Figure 8 The protective cover 7, the mounting bracket 5, the guide assembly 6, the pressure head 31 and the driving device 4 are shown in an assembly diagram from one perspective. The detection device 100 also includes a protective cover 7. The protective cover 7 is arranged on the first wall plate 11, and covers the pressure head 31, the driving device 4, the supporting fixture 2 and the above-mentioned mounting bracket 5 and other structures. In this way, the protective cover 7 can be used to protect the pressure head 31, the driving device 4, the supporting fixture 2 and the above-mentioned mounting bracket 5 and other structures, so as to prevent the detection device 100 from being damaged by impact during transportation, etc., and it is also beneficial to improve the appearance of the detection device 100.

[0122] Exemplarily, the protective cover 7 is formed in a cube shape, a cylinder shape or a special shape.

[0123] Please continue reading Fig.17 , the protective cover 7 includes: a first plate body 71 and a side panel 72. The first plate body 71 is in the shape of a flat plate. The first plate body 71 is a plate body on the protective cover 7 away from the first wall plate 11. The side panel 72 is in the shape of a ring. The side panel 72 is arranged around the edge of the first plate body 71. The connection method between the side panel 72 and the first plate body 71 includes but is not limited to threaded connection, welding connection, and adhesive connection. Exemplarily, the side panel 72 is in the shape of a rectangular ring, and includes a second plate body, a third plate body, a fourth plate body and a fifth plate body connected in sequence along its own circumference. In other examples, the side panel 72 can also be in the shape of a circular ring.

[0124] In order to prevent the protective cover 7 from restricting the movement of the piston rod 41 in the Z direction, a through hole 711 is provided on the first plate 71, and the piston rod 41 passes through the through hole 711. The shape of the through hole 711 includes but is not limited to circular, square, semicircular or special-shaped shapes.

[0125] In some embodiments of this application, please continue to refer to Fig.17 The protective cover 7 has a placement opening 76. The placement opening 76 can be provided to facilitate placing the device under test into the carrying fixture 2 or taking the device under test away.

[0126] The shape of the placement opening 76 includes, but is not limited to, a rectangle, a square, an oval, a semicircle, a circle, and a special-shaped structure. In this embodiment, a rectangle is used as an example for illustration.

[0127] Please continue reading Fig.17 and Fig.18 , Fig.18 Based on Figure 8 The protective cover 7, the mounting bracket 5, the guide assembly 6, the pressure head 31 and the driving device 4 are shown in another perspective of the assembly diagram. A support baffle 73 is provided in the protective cover 7. The support baffle 73 is connected to the first plate body 71, and the support baffle 73 is connected to both ends of the side panel 72 in the X-axis direction, and the support baffle 73 can abut against the first wall plate 11. In this way, the support baffle 73 can play a role in supporting the protective cover 7 to prevent the protective cover 7 from being deformed due to long-term use.

[0128] Furthermore, the supporting partition 73 divides the space in the protective cover 7 into a first installation space 74 and a second installation space 75. The mounting bracket 5, the driving device 4, the pressing head 31, the bearing fixture 2, etc. are all located in the first installation space 74. The placement opening 76 is connected to the first installation space 74.

[0129] On this basis, in some embodiments of the present application, the detection device 100 further includes a control module 9, and the control module 9 is located in the second installation space 75. Since the control module 9 has higher requirements in terms of waterproof and dustproof, by arranging the control module 9 in the second installation space 75, the contact between the control module 9 and the external environment is avoided, which is conducive to improving the waterproof and dustproof effect of the control module 9.

[0130] On this basis, in some embodiments of this application, please continue to refer to Fig.17 and Fig.18 The detection device 100 further includes a safety grating 8. The safety grating 8 includes a transmitter 81 and a receiver 82. Both the transmitter 81 and the receiver 82 are located at the placement opening 76 and are arranged on both sides of the placement opening 76 in the X-axis direction.

[0131] See also Fig.19 , Fig.19 : is an electrical control diagram of the detection device 100. In some embodiments of the present application, in order to facilitate the production line workers to operate the detection device 100, the detection device 100 also includes a control button Q. The control button Q is electrically connected to the drive device 4. The production line workers trigger the control button Q to realize whether the drive device 4 works or not, and then realize the driving of the pressure head 31.

[0132] For details, please continue to refer to Fig.19, the control module 9 is electrically connected to the safety grating 8, the drive device 4 and the control button Q respectively. During the test of the device under test on the production line, after the device under test is placed on the carrier fixture 2, the production line worker can trigger the control button Q. After receiving the feedback of the control button Q, the control module 9 controls the transmitter 81 of the safety grating 8 to emit a light signal, which includes but is not limited to infrared light, laser, etc. When the receiver 82 receives the light signal emitted by the transmitter 81, it means that there is no foreign matter at the placement port 76. The receiver 82 feeds back a first signal to the control module. After receiving the first signal, the control module 9 controls the drive device 4 to drive the pressure head 31 to move in the direction close to the carrier fixture 2 to press the device under test. When the receiver 82 does not receive the light signal emitted by the transmitter 81, it means that there is a foreign matter at the placement port 76, and the foreign matter reflects the light signal emitted by the transmitter 81. The receiver 82 feeds back a second signal to the control module. After receiving the second signal, the control module 9 does not control the drive device 4 to work.

[0133] In combination with the above description, it can be found that the provision of the safety grating 8 is conducive to improving the safety of the detection device 100 and preventing personal injuries during the test process.

[0134] On this basis, illustratively, the detection device 100 may further include an alarm device. The alarm device includes but is not limited to an indicator light and a voice module. The alarm device is electrically connected to the control module 9. After receiving the second signal, the control module 9 stops controlling the drive device 4 to work and controls the alarm device to alarm, so as to prompt the production line workers to remove the foreign objects from the placement port 76 in time.

[0135] In the description of this specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A detection device, characterized in that: include: A test dark box, wherein the test dark box is an empty box, a side wall plate of the test dark box in a first direction is a first wall plate, the first wall plate has a mounting opening, and an inner wall surface of the test dark box is covered with a first light absorbing material layer; A carrying fixture, the carrying fixture is located outside the test dark box and fixed at the installation opening, and the carrying fixture has a test hole connected to the test dark box; A pressure head, which is installed on the outside of the test dark box and opposite to the installation opening, and is movable in a first direction relative to the test dark box, and is used to cooperate with the carrying fixture to clamp the device under test; A driving device is located outside the test dark box and fixed to the test dark box. The driving device is connected to the pressure head to drive the pressure head to move relative to the test dark box.

2. The detection device according to claim 1, characterized in that: The light absorption rate of the first light absorption material layer is greater than or equal to 80%.

3. The detection device according to claim 1, characterized in that: The first light-absorbing material layer is made of light-absorbing foam or light-absorbing velvet.

4. The detection device according to claim 1, characterized in that: The bearing fixture has a contoured groove similar to the shape of the device under test, and the test hole is located at the bottom wall of the contoured groove.

5. The detection device according to claim 4, characterized in that: The bearing fixture includes a bearing portion and a fixing portion, the bearing portion is located in the mounting opening, the test hole is provided in the bearing portion, the fixing portion is fixed to the outer surface of the first wall panel and is connected to the edge of the outer surface of the bearing portion, and the fixing portion and the bearing portion jointly define the contoured groove.

6. The detection device according to claim 5, characterized in that: There are two fixing parts, which are located at two opposite ends of the bearing part, and are spaced apart in the circumferential direction of the bearing part to define two fastening notches.

7. The detection device according to claim 5, characterized in that: The inner surface of the bearing portion is flush with the inner surface of the first wall plate, or the inner surface of the bearing portion is located on a side of the inner surface of the first wall plate close to the interior of the test dark box.

8. The detection device according to claim 1, characterized in that: The inner peripheral wall of the test hole is covered with a second light absorbing material layer.

9. The detection device according to claim 1, characterized in that: The outer surface of the first wall plate is provided with a receiving groove, the installation opening is located at the bottom wall of the receiving groove; the bearing fixture is fixed in the receiving groove.

10. The detection device according to claim 9, characterized in that: An annular side plate is provided on the outer peripheral wall of the pressure head, and the annular side plate and the pressure head define an outer cover. The vertical projection of the annular side plate on the first wall plate is located in the accommodating groove and surrounds the outer periphery of the supporting fixture. The annular side plate is suitable for contacting the bottom wall of the accommodating groove when the pressure head and the supporting fixture cooperate to clamp the device under test.

11. The detection device according to claim 1, characterized in that: An annular side plate is provided on the outer peripheral wall of the pressure head, and the annular side plate and the pressure head define an outer cover. The vertical projection of the annular side plate on the first wall plate surrounds the outer periphery of the supporting fixture, and the annular side plate is suitable for contacting the outer surface of the first wall plate when the pressure head and the supporting fixture cooperate to clamp the device under test.

12. The detection device according to claim 10 or 11, characterized in that: The annular side plate and the pressing head are integrally formed.

13. The detection device according to any one of claims 1 to 11, characterized in that: A flexible layer is provided on the surface of the pressing head facing the supporting fixture; and / or the pressing head is a flexible member.

14. The detection device according to any one of claims 1 to 11, characterized in that: Also included is a mounting bracket, the mounting bracket being fixed to the first wall panel; The driving device is a cylinder, which is mounted on an end of the mounting bracket away from the first wall plate, and a piston rod of the cylinder is connected to the pressure head.

15. The detection device according to claim 14, characterized in that: It also includes a guide assembly, which includes a first guide member and a second guide member. The first guide member is fixed to the mounting bracket, the second guide member is relatively fixed to the piston rod, and the first guide member and the second guide member are slidably matched.

16. The detection device according to any one of claims 1 to 11, characterized in that: It also includes a protective cover, which is arranged on the first wall plate and covers the pressure head, the bearing fixture and the driving device; The protective cover has a placement opening.

17. The detection device according to claim 16, characterized in that: It also includes safety light barriers and control modules; The safety grating includes a transmitter and a receiver, and the transmitter and the receiver are located at the placement opening and are arranged on two opposite sides of the placement opening; The control module is electrically connected to the safety grating and the driving device respectively.

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