A detection device and method for the P / L sensor hole of a TP cover

Abstract

The present invention relates to a detection device and method for the P / L sensor hole of a TP cover plate. The detection device of the present invention includes a detection probe, a clamping module and a control module. The detection probe includes a light emitter and a light receiver. The clamping module is used to clamp the cover plate to be tested and move the cover plate to be tested to fit with the upper end surface of the detection probe, so that the cover plate emitting hole and the cover plate receiving hole correspond to the light emitter and the light receiver respectively. The clamping module is also used to clamp a gray card and drive the gray card to move horizontally at a certain distance above the cover plate to be tested. The control module is used to perform an unobstructed test on the cover plate to be tested when the gray card is away from the cover plate to be tested and the cover plate to be tested is in an unobstructed state; and to perform an obstructed test on the cover plate to be tested when the gray card is located above the cover plate to be tested and the cover plate to be tested is in an obstructed state. The detection device provided by the present invention can test the function of the sensor hole, screen out qualified or defective TP cover plates, and improve detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of front shell components of smart terminals, and in particular to a detection device and method for a P / L sensor hole of a TP cover plate. Background Art

[0002] The SKD (Sketch-Down) production model for mobile phones involves manufacturing separate parts domestically, shipping them to overseas assembly plants, and then reassembling them into complete devices. This production method places strict demands on the quality of the parts. If any quality issues are discovered during the assembly process at the overseas factory, the overseas factory will return the parts to the domestic supplier. The domestic supplier will not only face losses from returns and claims, but also bear the time and cost of shipping the parts back to China.

[0003] The TP cover of the phone's front housing assembly features a P / L sensor hole. The P / L sensor on the mainboard uses this hole to sense light changes and distance, adjusting screen brightness and turning it on and off. The P / L sensor hole consists of a transmitting hole and a receiving hole. Light emitted by the proximity sensor must pass through the transmitting hole to propagate outward. Reflected light and ambient light must also pass through the receiving hole to be received by the proximity sensor's light receiver and ambient light receiver.

[0004] The existing P / L sensor hole detection method is to assemble the front shell assembly and the mobile phone motherboard. After the phone is turned on, the P / L sensor hole function of the front shell assembly is tested through the phone's engineering mode. Generally, it takes about 50-60 seconds for the mobile phone motherboard to be powered on and turned on, and about 30 seconds for the distance sensor and ambient light sensor functions to be tested. This method has a long operation time and low efficiency. It also requires the use of consumable materials such as the mobile phone motherboard and battery materials. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a detection device and method for the P / L sensor hole of a TP cover plate, which can quickly and effectively test the function of the sensor hole of the TP cover plate and greatly improve the detection efficiency.

[0006] In a first aspect, the present invention provides a detection device for a P / L sensor hole of a TP cover plate, wherein the P / L sensor hole includes a cover plate transmitting hole and a cover plate receiving hole, including:

[0007] The detection probe includes a light emitter and a light receiver, wherein the light emitter is used to emit detection light, and the light receiver is used to receive the reflected light of the detection light after being reflected by an obstacle, and is used to receive ambient light;

[0008] The clamping module includes a first clamping unit and a second clamping unit, wherein the first clamping unit is used to clamp the cover plate to be tested and move the cover plate to be tested to be in contact with the upper end surface of the detection probe so that the cover plate transmitting hole and the cover plate receiving hole correspond to the light emitter and the light receiver respectively; the second clamping unit is used to clamp the gray card and drive the gray card to move horizontally at a certain distance above the cover plate to be tested;

[0009] a control module, configured to control the light emitter to emit detection light and obtain the intensity of the unobstructed reflected light and the ambient light intensity received by the light receiver when the gray card is away from the cover plate to be tested and the cover plate to be tested is in an unobstructed state, thereby performing an unobstructed test on the cover plate to be tested; the control module is further configured to output an unobstructed test pass signal when the cover plate passes the unobstructed test, and output a unobstructed test fail signal when the cover plate fails the unobstructed test;

[0010] The control module is further configured to control the light emitter to emit detection light and obtain the intensity of the blocked reflected light and the ambient light received by the light receiver when the gray card is above the cover plate to be tested and the cover plate to be tested is in an obstructed state, thereby performing an obstruction test on the cover plate to be tested; the control module is further configured to output an obstruction test pass signal when the cover plate passes the obstruction test, and output an obstruction test fail signal when the cover plate fails the obstruction test.

[0011] Furthermore, the control module is further configured to calculate an unobstructed noise floor value by using the unobstructed reflected light intensity and the ambient light intensity when the cover plate to be tested is in an unobstructed state, and compare the unobstructed noise floor value with a set unobstructed noise floor value threshold range;

[0012] The control module is further configured to output an unobstructed test pass signal when the unobstructed noise floor value is greater than or equal to the lower limit of the unobstructed noise floor value threshold and less than or equal to the upper limit of the unobstructed noise floor value threshold; the control module is further configured to output an unobstructed test fail signal when the unobstructed noise floor value is less than the lower limit of the unobstructed noise floor value threshold or greater than the upper limit of the unobstructed noise floor value threshold.

[0013] Furthermore, the control module is further configured to calculate the occlusion noise floor value by using the intensity of the occlusion reflected light and the intensity of the ambient light when the cover plate to be tested is in an occlusion state, and compare the occlusion noise floor value with a set occlusion noise floor value threshold range;

[0014] The control module is further configured to output an occlusion test pass signal when the occlusion noise floor value is greater than or equal to the lower limit of the occlusion noise floor value threshold and less than or equal to the upper limit of the occlusion noise floor value threshold; the control module is further configured to output an occlusion test fail signal when the occlusion noise floor value is less than the lower limit of the occlusion noise floor value threshold or greater than the upper limit of the occlusion noise floor value threshold.

[0015] Furthermore, the control module is further configured to calculate a noise floor difference between the occlusion noise floor value and the unocclusion noise floor value, and compare the noise floor difference with a set noise floor difference threshold interval;

[0016] The control module is further configured to output a difference test pass signal when the noise floor difference is greater than or equal to the lower limit of the noise floor difference threshold and less than or equal to the upper limit of the noise floor difference threshold; the control module is further configured to output a difference test fail signal when the noise floor difference is less than the lower limit of the noise floor difference threshold or greater than the upper limit of the noise floor difference threshold.

[0017] Furthermore, the detection device also includes an indicator light module;

[0018] The control module is used to control the indicator light module to light up green after outputting the unobstructed test qualified signal, the obstructed test qualified signal, and the difference test qualified signal;

[0019] The control module is further configured to control the indicator light module to light up in red after outputting a no-blocking test failure signal, or outputting a blocking test failure signal, or outputting a difference test failure signal.

[0020] In a second aspect, the present invention provides a method for detecting a P / L sensor hole of a TP cover plate, wherein the P / L sensor hole includes a cover plate transmitting hole and a cover plate receiving hole, and is characterized in that the detection device includes a detection probe, a clamping module, and a control module, wherein the detection probe includes a light emitter and a light receiver, and the clamping module includes a first clamping unit and a second clamping unit, wherein the first clamping unit is used to clamp the cover plate to be tested and move the cover plate to be tested to fit with the upper end surface of the detection probe, so that the cover plate transmitting hole and the cover plate receiving hole correspond to the light emitter and the light receiver, respectively; the second clamping unit is used to clamp a gray card and drive the gray card to move horizontally at a certain distance above the cover plate to be tested; the method comprises the following steps:

[0021] When the gray card is away from the cover plate to be tested and the cover plate to be tested is in an unobstructed state, controlling the light emitter to emit detection light, and obtaining the intensity of the reflected light and the intensity of the ambient light received by the light receiver, thereby performing an unobstructed test on the cover plate to be tested;

[0022] When the unobstructed test is passed, a unobstructed test qualified signal is output; when the unobstructed test is not passed, a unobstructed test unqualified signal is output;

[0023] When the gray card is above the cover plate to be tested and the cover plate to be tested is in an obstruction state, controlling the light emitter to emit detection light, and obtaining the intensity of the reflected light and the intensity of the ambient light received by the light receiver, thereby performing an obstruction test on the cover plate to be tested;

[0024] When the occlusion test is passed, an occlusion test pass signal is output; when the occlusion test is not passed, an occlusion test fail signal is output.

[0025] Furthermore, when the cover plate to be tested is in an unobstructed state, the unobstructed reflected light intensity and the ambient light intensity are calculated to obtain an unobstructed noise floor value, and the unobstructed noise floor value is compared with a set unobstructed noise floor value threshold range;

[0026] When the unobstructed noise floor value is greater than or equal to the lower limit of the unobstructed noise floor value threshold and less than or equal to the upper limit of the unobstructed noise floor value threshold, outputting an unobstructed test pass signal;

[0027] When the unobstructed noise floor value is less than the lower limit of the unobstructed noise floor value threshold, or is greater than the upper limit of the unobstructed noise floor value threshold, a unobstructed test failure signal is output.

[0028] Furthermore, when the cover plate to be tested is in an obstructed state, the intensity of the obstructed reflected light and the intensity of the ambient light are calculated to obtain an obstruction noise floor value, and the obstruction noise floor value is compared with a set obstruction noise floor value threshold interval;

[0029] When the occlusion noise floor value is greater than or equal to the lower limit of the occlusion noise floor value threshold and less than or equal to the upper limit of the occlusion noise floor value threshold, outputting an occlusion test pass signal;

[0030] When the occlusion noise floor value is less than the lower limit of the occlusion noise floor value threshold, or is greater than the upper limit of the occlusion noise floor value threshold, an occlusion test failure signal is output.

[0031] Further, a noise floor difference between the occlusion noise floor value and the unocclusion noise floor value is calculated, and the noise floor difference is compared with a set noise floor difference threshold interval;

[0032] When the noise floor difference is greater than or equal to the lower limit of the noise floor difference threshold and less than or equal to the upper limit of the noise floor difference threshold, outputting a difference test pass signal;

[0033] When the noise floor difference is less than the lower limit of the noise floor difference threshold, or greater than the upper limit of the noise floor difference threshold, a difference test failure signal is output.

[0034] Further, after outputting the unobstructed test qualified signal, the obstructed test qualified signal, and the difference test qualified signal, controlling the indicator light module to light up green;

[0035] After outputting a no-blocking test failure signal, or outputting a blocking test failure signal, or outputting a difference test failure signal, the indicator light module is controlled to light up in red.

[0036] This application provides a detection device and method for the P / L sensor hole of a TP cover. By setting up a detection probe with a light transmitter and a light receiver, it simulates the sensor on a smart terminal to detect the P / L sensor hole of the TP cover. It also designs an unobstructed test, an obstructed test, and a difference test to detect the penetration and reflection effects of the sensor hole from multiple aspects. In addition, this test method does not require the cover to be connected to the terminal motherboard for testing, thus avoiding the terminal power-on and startup time required in the original test method, greatly improving detection efficiency. It can quickly and effectively test the function of the sensor hole of the TP cover, and respectively screen out qualified TP cover plates and defective TP cover plates.

[0037] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Schematic diagram of the structure of a detection device for a P / L sensor hole of a TP cover plate according to an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the unobstructed test principle of a detection device for the P / L sensor hole of a TP cover plate according to an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the occlusion test principle of a detection device for a P / L sensor hole of a TP cover plate according to an embodiment of the present invention;

[0041] Figure 4 Schematic diagram of the steps of a method for detecting a P / L sensor hole of a TP cover plate according to an embodiment of the present invention;

[0042] Figure 5 1 is a flow chart of a method for detecting a P / L sensor hole of a TP cover plate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

[0044] It should be clear that the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the embodiments of the present application.

[0045] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present application. The singular forms "a," "the," and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0046] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0047] In addition, in this application, unless otherwise specified, "plurality" refers to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0048] In response to the technical problems mentioned in the background technology, the present invention provides a detection device for the P / L sensor hole of the TP cover plate, which is used to perform quality inspection on the P / L sensor hole of the front shell component of the smart terminal. Since existing smart terminals basically include ambient light detection and distance detection functions, the TP cover plate of the front shell component of the smart terminal needs to be provided with a P / L sensor hole for light to pass through, so that the ambient light sensor and distance sensor set on the mainboard can emit detection light signals through the sensor hole, and receive reflected detection light signals and ambient light signals through the sensor hole. This application designs a detection device by corresponding to the position of the sensor hole on the TP cover plate.

[0049] In one example, Figure 1 As shown, the P / L sensor hole includes a cover plate transmitting hole and a cover plate receiving hole. The detection device includes a detection probe, a clamping module and a control module. The detection probe includes a light emitter and a light receiver. The light emitter is used to emit detection light, and the light receiver is used to receive the reflected light of the detection light reflected by the obstacle, as well as to receive ambient light.

[0050] Optionally, the light transmitter may be an infrared transmitter, and correspondingly, the light receiver includes an infrared receiver for receiving reflected infrared light signals. The light transmitter may also be a laser transmitter, and the light receiver includes a laser receiver for receiving reflected laser light signals. The light receiver also includes an ambient light receiver for receiving ambient light.

[0051] The clamping module includes a first clamping unit and a second clamping unit. The first clamping unit is used to clamp the cover plate to be tested and move the cover plate to be tested to fit with the upper end surface of the detection probe, so that the cover plate transmitting hole and the cover plate receiving hole correspond to the light emitter and the light receiver respectively. The second clamping unit is used to clamp the gray card and drive the gray card to move horizontally at a certain distance above the cover plate to be tested.

[0052] Optionally, the gray card can be an 18% gray card. The distance between the gray card and the P / L sensor hole of the cover to be tested can be maintained at 22mm, 25mm, or 40mm, so that the detection light can pass through the cover's emitting hole and be reflected by the gray card above. The reflected detection light is received by the light receiver through the cover's receiving hole.

[0053] The control module is used to control the light emitter to emit detection light and obtain the intensity of the unobstructed reflected light and the intensity of the ambient light received by the light receiver when the gray card is away from the cover plate to be tested and the cover plate to be tested is in an unobstructed state, so as to perform an unobstructed test on the cover plate to be tested; the control module is also used to output an unobstructed test pass signal when the unobstructed test is passed, and output a unobstructed test fail signal when the unobstructed test is failed.

[0054] Among them, Figure 2 As shown, when the gray card is away from the cover plate to be tested and the cover plate to be tested is in an unobstructed state, part of the detection light emitted by the light emitter is reflected by the hole wall of the cover plate and is directly received by the light receiver, while the other part passes through the cover plate emission hole and is not received by the light receiver. The control module performs an unobstructed test on the cover plate according to the intensity of the received unobstructed reflected light and the intensity of the ambient light.

[0055] The control module is also used to control the light emitter to emit detection light when the gray card is above the cover to be tested and the cover to be tested is in an obstructed state, and to obtain the intensity of the obstructed reflected light and the intensity of the ambient light received by the light receiver, so as to perform an obstruction test on the cover to be tested; the control module is also used to output an obstruction test pass signal when the obstruction test is passed, and output an obstruction test fail signal when the obstruction test is failed.

[0056] Among them, Figure 3 As shown, when the gray card is above the cover plate to be tested and the cover plate to be tested is in a blocked state, part of the detection light emitted by the light emitter is reflected by the hole wall of the cover plate emission hole and is directly received by the light receiver, and the other part passes through the cover plate emission hole and is reflected by the gray card set above the cover plate to be tested, and is thus received by the light receiver. When the cover plate to be tested is in a blocked state, the blocked reflected light includes the above two sources, and the control module performs a blockage test on the cover plate to be tested according to the received blocked reflected light intensity and the ambient light intensity.

[0057] Specifically, the control module is also used to calculate the unobstructed reflected light intensity and the ambient light intensity to obtain the unobstructed background noise value when the cover to be tested is in an unobstructed state, and compare the unobstructed background noise value with the set unobstructed background noise value threshold range; the control module is also used to output an unobstructed test pass signal when the unobstructed background noise value is greater than or equal to the lower limit of the unobstructed background noise value threshold and less than or equal to the upper limit of the unobstructed background noise value threshold; the control module is also used to output an unobstructed test fail signal when the unobstructed background noise value is less than the lower limit of the unobstructed background noise value threshold, or greater than the upper limit of the unobstructed background noise value threshold.

[0058] Among them, the control module calculates the unobstructed reflected light intensity and the ambient light intensity to obtain the unobstructed noise floor value, referred to as CT (i.e. crosstalk). When the CT value meets the set unobstructed noise floor value threshold range, as shown in the following formula, that is, CT must be greater than or equal to the lower limit of the unobstructed noise floor value threshold, and must be less than or equal to the upper limit of the unobstructed noise floor value threshold, an unobstructed test qualified signal is output; when the CT value does not meet the set unobstructed noise floor value threshold range, a unobstructed test failed signal is output.

[0059]

[0060] Specifically, the control module is also used to calculate the occlusion reflected light intensity and the ambient light intensity to obtain an occlusion noise floor value when the cover plate to be tested is in an occlusion state, and compare the occlusion noise floor value with the set occlusion noise floor value threshold range; the control module is also used to output an occlusion test pass signal when the occlusion noise floor value is greater than or equal to the lower limit of the occlusion noise floor value threshold and less than or equal to the upper limit of the occlusion noise floor value threshold; the control module is also used to output an occlusion test fail signal when the occlusion noise floor value is less than the lower limit of the occlusion noise floor value threshold, or greater than the upper limit of the occlusion noise floor value threshold.

[0061] Among them, when there is a gray card occlusion state, the control module calculates the occlusion reflected light intensity and the ambient light intensity to obtain the occlusion noise value, referred to as Prox_Covered. When the Prox_Covered value meets the set occlusion noise value threshold range, as shown in the following formula, that is, Prox_Covered must be greater than or equal to the lower limit of the occlusion noise value threshold and less than or equal to the upper limit of the occlusion noise value threshold, the occlusion test pass signal is output; when the Prox_Covered value does not meet the set occlusion noise value threshold range, the occlusion test fail signal is output.

[0062]

[0063] Optionally, the control module is also used to calculate the noise floor difference between the occluded noise floor value and the unoccluded noise floor value, and compare the noise floor difference with a set noise floor difference threshold range; the control module is also used to output a difference test pass signal when the noise floor difference is greater than or equal to the lower limit of the noise floor difference threshold and less than or equal to the upper limit of the noise floor difference threshold; the control module is also used to output a difference test fail signal when the noise floor difference is less than the lower limit of the noise floor difference threshold, or greater than the upper limit of the noise floor difference threshold.

[0064] Among them, the control module calculates the noise floor difference by subtracting the occluded noise floor value from the unoccluded noise floor value, referred to as Covered_VS_Uncovered, and the calculation method is Covered_VS_Uncovered = Prox_Covered – CT. When the Covered_VS_Uncovered value meets the set noise floor difference threshold range, as shown in the following formula, that is, Covered_VS_Uncovered must be greater than or equal to the lower limit of the noise floor difference threshold and less than or equal to the upper limit of the noise floor difference threshold, a difference test pass signal is output; when the Covered_VS_Uncovered value does not meet the set noise floor difference threshold range, a difference test fail signal is output.

[0065]

[0066] Optionally, the detection device also includes an indicator light module; the control module is used to control the indicator light module to light up green after outputting an unobstructed test pass signal, an occlusion test pass signal, and a difference test pass signal; the control module is also used to control the indicator light module to light up red after outputting an unobstructed test fail signal, an occlusion test fail signal, or a difference test fail signal.

[0067] Correspondingly, Figure 4 As shown, the present invention also provides a method for detecting the P / L sensor hole of a TP cover plate, which is executed by the control module of the above-mentioned detection device and includes the following steps:

[0068] S401: When the gray card is away from the cover plate to be tested and the cover plate to be tested is in an unobstructed state, controlling the light emitter to emit detection light, and obtaining the intensity of the reflected light and the ambient light received by the light receiver, thereby performing an unobstructed test on the cover plate to be tested;

[0069] S402: Outputting a non-obstruction test pass signal when the non-obstruction test is passed, and outputting a non-obstruction test fail signal when the non-obstruction test is failed;

[0070] S403: When the gray card is above the cover plate to be tested and the cover plate to be tested is in an obstruction state, controlling the light emitter to emit detection light, and obtaining the intensity of the reflected light and the intensity of the ambient light received by the light receiver, thereby performing an obstruction test on the cover plate to be tested;

[0071] S404: When the occlusion test is passed, a occlusion test pass signal is output; when the occlusion test is not passed, a occlusion test fail signal is output.

[0072] In a specific example, performing an unobstructed test on the cover plate to be tested includes the following steps:

[0073] When the cover plate to be tested is in an unobstructed state, the unobstructed reflected light intensity and the ambient light intensity are calculated to obtain an unobstructed noise floor value, and the unobstructed noise floor value is compared with a set unobstructed noise floor value threshold range;

[0074] When the unobstructed noise floor value is greater than or equal to the lower limit of the unobstructed noise floor value threshold and less than or equal to the upper limit of the unobstructed noise floor value threshold, outputting an unobstructed test pass signal;

[0075] When the unobstructed noise floor value is less than the lower limit of the unobstructed noise floor value threshold, or is greater than the upper limit of the unobstructed noise floor value threshold, a unobstructed test failure signal is output.

[0076] In a specific example, performing an occlusion test on the cover plate to be tested includes the following steps:

[0077] When the cover plate to be tested is in an obstructed state, the intensity of the obstructed reflected light and the intensity of the ambient light are calculated to obtain an obstruction noise floor value, and the obstruction noise floor value is compared with a set obstruction noise floor value threshold interval;

[0078] When the occlusion noise floor value is greater than or equal to the lower limit of the occlusion noise floor value threshold and less than or equal to the upper limit of the occlusion noise floor value threshold, outputting an occlusion test pass signal;

[0079] When the occlusion noise floor value is less than the lower limit of the occlusion noise floor value threshold, or is greater than the upper limit of the occlusion noise floor value threshold, an occlusion test failure signal is output.

[0080] In a specific example, a background noise difference test is also required for the cover plate to be tested, including the following steps:

[0081] Calculating a noise floor difference between the occlusion noise floor value and the unocclusion noise floor value, and comparing the noise floor difference with a set noise floor difference threshold interval;

[0082] When the noise floor difference is greater than or equal to the lower limit of the noise floor difference threshold and less than or equal to the upper limit of the noise floor difference threshold, outputting a difference test pass signal;

[0083] When the noise floor difference is less than the lower limit of the noise floor difference threshold, or greater than the upper limit of the noise floor difference threshold, a difference test failure signal is output.

[0084] In a specific example, the detection device further includes an indicator light module, which informs the technician of the detection result through the indicator light. The method further includes the following steps:

[0085] After outputting the unobstructed test qualified signal, the obstructed test qualified signal, and the difference test qualified signal, controlling the indicator light module to light up green;

[0086] After outputting a no-blocking test failure signal, or outputting a blocking test failure signal, or outputting a difference test failure signal, the indicator light module is controlled to light up in red.

[0087] When the control module determines that the current TP cover has passed the unobstructed test, obstructed test and difference test respectively, the control LED green light is on, indicating that the current test sample is a qualified sample; if the currently tested TP cover does not meet one or more of the unobstructed test, obstructed test and difference test, the control LED red light is on, indicating that the current test sample is an unqualified sample and the TP cover has defects.

[0088] In a specific application scenario, such as Figure 5 As shown, the implementation steps of this method are as follows: the first clamping unit moves the cover plate to be tested to fit with the upper end surface of the detection probe, so that the cover plate emitting hole and the cover plate receiving hole correspond to the light emitter and the light receiver respectively; then, when the gray card is away from the top of the cover plate to be tested and the cover plate to be tested is in an unobstructed state, the cover plate to be tested is subjected to an unobstructed test; after the unobstructed test is passed, the gray card is moved above the cover plate to be tested, and when the cover plate to be tested is in an obstructed state, an obstructed test is performed on the cover plate to be tested; after the obstruction test of the cover plate to be tested is passed, a difference test is performed on the cover plate to be tested, and after the difference test of the cover plate to be tested is passed, the green light of the LED is controlled to light up, indicating that the current test sample is a qualified sample. If any one of the unobstructed test, obstruction test, and difference test fails in the process of performing the unobstructed test, the red light of the LED is controlled to light up, indicating that the current test sample is an unqualified sample, and the detection is completed.

[0089] This application provides a detection device and method for the P / L sensor hole of a TP cover plate. By setting a detection probe with a light transmitter and a light receiver, the device simulates the sensor on a smart terminal to detect the P / L sensor hole of the TP cover plate. It also designs unobstructed tests, obstructed tests, and difference tests to detect the penetration and reflection effects of the sensor hole from multiple aspects. Furthermore, this test method does not require the cover plate to be connected to the terminal motherboard for testing, thus avoiding the terminal power-on and startup time in the original test method. The detection time is shortened to less than 8 seconds, greatly improving the detection efficiency. The function of the sensor hole of the TP cover plate can be quickly and effectively tested, and qualified TP cover plates and defective TP cover plates can be screened out respectively.

[0090] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A detection device for a P / L sensor hole of a TP cover plate, wherein the P / L sensor hole includes a cover plate transmitting hole and a cover plate receiving hole, characterized in that: include: The detection probe includes a light emitter and a light receiver, wherein the light emitter is used to emit detection light, and the light receiver is used to receive the reflected light of the detection light after being reflected by an obstacle, and is used to receive ambient light; The clamping module includes a first clamping unit and a second clamping unit, wherein the first clamping unit is used to clamp the cover plate to be tested and move the cover plate to be tested to be in contact with the upper end surface of the detection probe so that the cover plate transmitting hole and the cover plate receiving hole correspond to the light emitter and the light receiver respectively; the second clamping unit is used to clamp the gray card and drive the gray card to move horizontally at a certain distance above the cover plate to be tested; a control module, configured to control the light emitter to emit detection light and obtain the intensity of the unobstructed reflected light and the ambient light intensity received by the light receiver when the gray card is away from the cover plate to be tested and the cover plate to be tested is in an unobstructed state, thereby performing an unobstructed test on the cover plate to be tested; the control module is further configured to output an unobstructed test pass signal when the cover plate passes the unobstructed test, and output a unobstructed test fail signal when the cover plate fails the unobstructed test; The control module is further configured to control the light emitter to emit detection light and obtain the intensity of the blocked reflected light and the ambient light received by the light receiver when the gray card is above the cover plate to be tested and the cover plate to be tested is in an obstructed state, thereby performing an obstruction test on the cover plate to be tested; the control module is further configured to output an obstruction test pass signal when the cover plate passes the obstruction test, and output an obstruction test fail signal when the cover plate fails the obstruction test.

2. The device for detecting the P / L sensor hole of a TP cover according to claim 1, characterized in that: The control module is further configured to calculate an unobstructed noise floor value by using the unobstructed reflected light intensity and the ambient light intensity when the cover plate to be tested is in an unobstructed state, and compare the unobstructed noise floor value with a set unobstructed noise floor value threshold range; The control module is further configured to output an unobstructed test pass signal when the unobstructed noise floor value is greater than or equal to the lower limit of the unobstructed noise floor value threshold and less than or equal to the upper limit of the unobstructed noise floor value threshold; the control module is further configured to output an unobstructed test fail signal when the unobstructed noise floor value is less than the lower limit of the unobstructed noise floor value threshold or greater than the upper limit of the unobstructed noise floor value threshold.

3. The device for detecting the P / L sensor hole of a TP cover plate according to claim 2, characterized in that: The control module is further configured to calculate the occlusion noise floor value by using the intensity of the occlusion reflected light and the intensity of the ambient light when the cover plate to be tested is in an occlusion state, and compare the occlusion noise floor value with a set occlusion noise floor value threshold range; The control module is further configured to output an occlusion test pass signal when the occlusion noise floor value is greater than or equal to the lower limit of the occlusion noise floor value threshold and less than or equal to the upper limit of the occlusion noise floor value threshold; the control module is further configured to output an occlusion test fail signal when the occlusion noise floor value is less than the lower limit of the occlusion noise floor value threshold or greater than the upper limit of the occlusion noise floor value threshold.

4. The device for detecting the P / L sensor hole of a TP cover plate according to claim 3, characterized in that: The control module is further configured to calculate a noise floor difference between the occlusion noise floor value and the unocclusion noise floor value, and compare the noise floor difference with a set noise floor difference threshold interval; The control module is further configured to output a difference test pass signal when the noise floor difference is greater than or equal to the lower limit of the noise floor difference threshold and less than or equal to the upper limit of the noise floor difference threshold; the control module is further configured to output a difference test fail signal when the noise floor difference is less than the lower limit of the noise floor difference threshold or greater than the upper limit of the noise floor difference threshold.

5. The device for detecting the P / L sensor hole of a TP cover plate according to claim 4, characterized in that: The detection device also includes an indicator light module; The control module is used to control the indicator light module to light up green after outputting the unobstructed test qualified signal, the obstructed test qualified signal, and the difference test qualified signal; The control module is further configured to control the indicator light module to light up in red after outputting a no-blocking test failure signal, or outputting a blocking test failure signal, or outputting a difference test failure signal.

6. A method for detecting a P / L sensor hole of a TP cover plate, wherein the P / L sensor hole includes a cover plate transmitting hole and a cover plate receiving hole, characterized in that: The detection device includes a detection probe, a clamping module, and a control module. The detection probe includes a light emitter and a light receiver. The clamping module includes a first clamping unit and a second clamping unit. The first clamping unit is used to clamp the cover plate to be tested and move the cover plate to be tested to fit with the upper end surface of the detection probe so that the cover plate transmitting hole and the cover plate receiving hole correspond to the light emitter and the light receiver respectively; the second clamping unit is used to clamp a gray card and drive the gray card to move horizontally at a certain distance above the cover plate to be tested. The method includes the following steps: When the gray card is away from the cover plate to be tested and the cover plate to be tested is in an unobstructed state, controlling the light emitter to emit detection light, and obtaining the intensity of the reflected light and the intensity of the ambient light received by the light receiver, thereby performing an unobstructed test on the cover plate to be tested; When the unobstructed test is passed, a unobstructed test qualified signal is output; when the unobstructed test is not passed, a unobstructed test unqualified signal is output; When the gray card is above the cover plate to be tested and the cover plate to be tested is in an obstruction state, controlling the light emitter to emit detection light, and obtaining the intensity of the reflected light and the intensity of the ambient light received by the light receiver, thereby performing an obstruction test on the cover plate to be tested; When the occlusion test is passed, an occlusion test pass signal is output; when the occlusion test is not passed, an occlusion test fail signal is output.

7. The method for detecting the P / L sensor hole of a TP cover plate according to claim 6, characterized in that: The following steps are also included: When the cover plate to be tested is in an unobstructed state, the unobstructed reflected light intensity and the ambient light intensity are calculated to obtain an unobstructed noise floor value, and the unobstructed noise floor value is compared with a set unobstructed noise floor value threshold range; When the unobstructed noise floor value is greater than or equal to the lower limit of the unobstructed noise floor value threshold and is less than or equal to the upper limit of the unobstructed noise floor value threshold, outputting an unobstructed test pass signal; When the unobstructed noise floor value is less than the lower limit of the unobstructed noise floor value threshold, or is greater than the upper limit of the unobstructed noise floor value threshold, a unobstructed test failure signal is output.

8. The method for detecting the P / L sensor hole of a TP cover plate according to claim 7, characterized in that: The following steps are also included: When the cover plate to be tested is in an obstructed state, the intensity of the obstructed reflected light and the intensity of the ambient light are calculated to obtain an obstruction noise floor value, and the obstruction noise floor value is compared with a set obstruction noise floor value threshold interval; When the occlusion noise floor value is greater than or equal to the lower limit of the occlusion noise floor value threshold and less than or equal to the upper limit of the occlusion noise floor value threshold, outputting an occlusion test pass signal; When the occlusion noise floor value is less than the lower limit of the occlusion noise floor value threshold, or is greater than the upper limit of the occlusion noise floor value threshold, an occlusion test failure signal is output.

9. The method for detecting the P / L sensor hole of a TP cover plate according to claim 8, characterized in that: The following steps are also included: Calculating a noise floor difference between the occlusion noise floor value and the unocclusion noise floor value, and comparing the noise floor difference with a set noise floor difference threshold interval; When the noise floor difference is greater than or equal to the lower limit of the noise floor difference threshold and less than or equal to the upper limit of the noise floor difference threshold, outputting a difference test pass signal; When the noise floor difference is less than the lower limit of the noise floor difference threshold, or greater than the upper limit of the noise floor difference threshold, a difference test failure signal is output.

10. The method for detecting the P / L sensor hole of a TP cover plate according to claim 9, characterized in that: The detection device further includes an indicator light module, and the method further includes the following steps: After outputting the unobstructed test qualified signal, the obstructed test qualified signal, and the difference test qualified signal, controlling the indicator light module to light up green; After outputting a no-blocking test failure signal, or outputting a blocking test failure signal, or outputting a difference test failure signal, the indicator light module is controlled to light up in red.

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