CN112945987B - Light guide assembly and detection method thereof - Google Patents
Light guide assembly and detection method thereof Download PDFInfo
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- CN112945987B CN112945987B CN202110123705.2A CN202110123705A CN112945987B CN 112945987 B CN112945987 B CN 112945987B CN 202110123705 A CN202110123705 A CN 202110123705A CN 112945987 B CN112945987 B CN 112945987B
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- 238000001514 detection method Methods 0.000 title claims abstract description 190
- 239000003990 capacitor Substances 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 34
- 239000002184 metal Substances 0.000 claims description 26
- 230000006698 induction Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 description 11
- 238000012545 processing Methods 0.000 description 9
- 230000004044 response Effects 0.000 description 9
- 230000006870 function Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000013480 data collection Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
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- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
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Abstract
The application discloses a light guide assembly and a detection method of the light guide assembly, and belongs to the technical field of electronics. Wherein, the light guide assembly includes: a light guide body; the sensing component is arranged on the light guide main body and is provided with a signal output port; and the detection circuit is electrically connected with the signal output port of the sensing component, and the detection circuit determines whether the light guide main body is broken or not according to the detection signal output by the sensing component. Whether the light guide main part breaks can be discerned to the light guide subassembly that this application embodiment provided, can solve among the prior art because the leaded light post sets up inside electronic equipment, is difficult to discover that the cracked problem appears in the leaded light post.
Description
Technical Field
The application belongs to the technical field of electronics, and particularly relates to a light guide assembly and a detection method of the light guide assembly.
Background
With the extremely pursuit of users for use experience, the requirements of users for the performance and appearance of mobile terminals such as mobile phones, tablet computers and the like are higher and higher. In order to improve user experience, the screen area of the mobile terminal is larger and larger, the screen occupation ratio (the proportion of the screen display area to the screen area) is higher and higher, and correspondingly, the black edge of the top of the screen of the mobile terminal for placing devices such as a front camera, an infrared sensor, a photosensitive sensor and the like is narrower and narrower.
In the process of realizing the application, the inventor finds that in the prior art, in order to avoid that devices such as an infrared sensor and a photosensitive sensor occupy a black edge space at the top of a screen, the infrared sensor and the photosensitive sensor can be placed below the screen, a light guide column is often arranged between the infrared sensor and the screen as well as between the infrared sensor and the photosensitive sensor, and the light guide column can be used for guiding ambient light and infrared light outside the screen into the screen so as to realize data collection of the infrared sensor and the photosensitive sensor. Because the light guide column belongs to fragile material, the circumstances of breaking appears easily in the transportation of mobile terminal, equipment or use, but, the light guide column sets up inside mobile terminal, and assembly personnel and user are difficult to discover that the light guide column appears breaking. Therefore, the data collection of the sensor can be influenced, and the functions of automatically adjusting the screen brightness, calling close to the screen, preventing touch and the like of the mobile terminal are influenced.
Disclosure of Invention
The application aims to provide a light guide assembly and a detection method of the light guide assembly, at least one of the problems that an assembler and a user are difficult to find that the light guide column breaks is solved, and the light guide assembly is arranged inside electronic equipment.
In order to solve the technical problems, the application is realized as follows:
In a first aspect, embodiments of the present application provide a light guide assembly, including:
a light guide body;
the sensing component is arranged on the light guide main body and is provided with a signal output port;
and the detection circuit is electrically connected with the signal output port of the sensing component, and the detection circuit determines whether the light guide main body is broken or not according to the detection signal output by the sensing component.
In a second aspect, an embodiment of the present application proposes a method for detecting a light guiding assembly, which is applied to an electronic device, where the electronic device includes the light guiding assembly according to the first aspect, and the method includes:
acquiring a detection signal output by the induction component through a detection circuit;
and under the condition that the detection signal meets the preset condition, determining that the light guide main body is broken, and outputting reminding information.
In a third aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method according to the second aspect.
In a fourth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and where the processor is configured to execute a program or instructions to implement a method according to the second aspect.
In this embodiment of the application, response part sets up in the leaded light main part, and response part has signal output port, and detection circuit's detection pin is connected with response part's signal output part electricity, and detection circuit confirms whether the leaded light main part breaks according to response part's detection signal to when the leaded light main part breaks, can in time discover, so that the user changes the leaded light subassembly, can avoid the realization that the fracture of leaded light main part influences electronic equipment's automatically regulated screen brightness, conversation are close to the screen, prevent functions such as touching, and then can promote user experience to a great extent.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic view of a part of a structure of a first light guiding assembly according to an embodiment of the present disclosure;
fig. 2 is a schematic circuit diagram of a first light guiding component according to an embodiment of the present application;
fig. 3 is a schematic view of a part of a structure of a second light guiding assembly according to an embodiment of the present disclosure;
fig. 4 is a schematic circuit diagram of a second light guiding component according to an embodiment of the present disclosure;
FIG. 5 is a schematic circuit diagram of a second light guiding assembly according to an embodiment of the present disclosure;
fig. 6 is a schematic partial structure of a third light guiding assembly according to an embodiment of the present disclosure;
fig. 7 is a schematic partial structure of a fourth light guiding component according to an embodiment of the present disclosure;
fig. 8 is a schematic circuit diagram of a fourth light guiding component according to an embodiment of the present disclosure;
fig. 9 is a schematic circuit diagram of a fourth light guiding component according to an embodiment of the present disclosure;
fig. 10 is a schematic view of a part of a structure of an electronic device according to an embodiment of the present application.
Fig. 11 is a flow chart of a detection method of a light guide assembly according to an embodiment of the present application.
Fig. 12 is a flowchart of another method for detecting a light guide assembly according to an embodiment of the present application.
Fig. 13 is a flow chart of a detection method of another light guide assembly according to an embodiment of the present application.
Reference numerals:
100. 300, 400, 500-light guide assembly; 110. 310, 410, 510-a light guiding body; 120. 320, 420-sensing means; 121-a signal output port; 130. 330, 430-a detection circuit; 131-a processing module; 132-a detection module and 133-a power supply module; 140-a structural support portion; 440-metal contacts; 311-first side; 312-second side; 321 a first capacitor plate; 322-a second capacitive plate; 600-screen; 700-proximity sensor.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The features of the terms "first", "second", and the like in the description and in the claims of this application may be used for descriptive or implicit inclusion of one or more such features. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "inner", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that the term "connected" should be interpreted broadly, unless explicitly stated and defined otherwise, for example, as being electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The embodiment of the application provides a light guide assembly, which can be applied to an electronic device product, and is used for guiding ambient light and the like outside a screen of the electronic device into the screen so as to realize data collection of a sensor. The electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm computer, or a wearable device, which is not limited herein.
The structure of the light guide assembly according to an embodiment of the present application is described below with reference to fig. 1.
As shown in fig. 1, a light guide assembly 100 according to some embodiments of the present invention includes a light guide body 110, a sensing part 120, and a detection circuit 130.
The sensing part 120 is disposed on the light guide body 110, and the sensing part 120 has a signal output port 121; the detection pin of the detection circuit 130 is electrically connected to the signal output port 121 of the sensing part 120, and the detection circuit 130 determines whether the light guide body 110 is broken according to the detection signal output from the sensing part 120.
The light guide body 110 may serve to transmit electromagnetic wave signals required for the operation of the sensor. Such as infrared sensors, light sensitive sensors, etc. The light guide body 110 is used to guide ambient light or infrared light or the like outside the screen of the electronic device into the screen to achieve data collection of the sensor. In the embodiment of the present invention, the catheter material of the light guide body 110 may be selected according to the wavelength of the electromagnetic wave signal to be transmitted. For example, the wavelength of electromagnetic wave signal to be conducted by the infrared sensor is 940nm (infrared band), and the wavelength of electromagnetic wave signal to be conducted by the photosensitive sensor is 400nm-700nm (visible band), and the catheter material of the light guiding body 110 may be, for example, polymethacrylate (PMMA) or Polycarbonate (PC).
It should be noted that, in the embodiment of the present invention, the light guiding body 110 is a light guiding path portion, that is, a portion for transmitting electromagnetic wave signals required for the operation of the sensor. The light guiding body 110 may further comprise a structural support portion. As shown in fig. 1, exemplary, the light guide body 110 is disposed on a structural support portion provided with a receiving cavity having an opening for receiving the sensor. The structural support portion is used for fixing the light guide body 110, and ensuring that the light guide body 110 is correctly installed in the electronic device, that is, ensuring that the light guide body corresponds to a transmitting or receiving path of the sensor.
Further, the number of light guiding bodies may be set according to the type of sensor. Taking the photosensitive sensor as an example, as shown in fig. 1, a light guiding body 110 is disposed on the structural support portion 140, and the light guiding body 110 is located between the screen of the electronic device and the photosensitive sensor. Taking an infrared sensor as an example, as shown in fig. 3, two light guiding bodies 110 are disposed on the structural support portion 140, wherein one light guiding body 110 is located between a screen of the electronic device and a transmitting end of the infrared sensor, and the other light guiding body 110 is located between the screen of the electronic device and a receiving end of the infrared sensor.
In this embodiment, fig. 2 shows a schematic circuit part of a light guide assembly, and a detection pin of a detection circuit 130 is connected to a signal output port of an induction component 120, so as to detect a detection signal output by the induction component 120.
In some embodiments, as shown in fig. 2, the detection circuit 130 includes a processing module 131, a detection module 132, and a power supply module 133, where the processing module 131 obtains a detection signal output from the sensing part 120 through the detection module 132, and determines whether the light guiding body 110 is broken according to the detection signal. The power output end of the power supply module 133 is connected to the power input end of the detection module 132, and is used for supplying power to the detection module 132. The power module 133 may also be used to provide power to the processing module 131. According to the embodiment of the application, the detection circuit 130 includes the independent power supply module 133, so that the detection circuit 130 can be independently controlled to be turned on and off, and the power consumption of the electronic device can be reduced.
In this embodiment of the application, response part sets up in the leaded light main part, and response part has signal output port, and detection circuit's detection pin is connected with response part's signal output part electricity, and detection circuit confirms whether the leaded light main part breaks according to response part's detection signal to when the leaded light main part breaks, can in time discover, so that the user changes the leaded light subassembly, can avoid the realization that the fracture of leaded light main part influences electronic equipment's automatically regulated screen brightness, conversation are close to the screen, prevent functions such as touching, and then can promote user experience to a great extent.
According to some embodiments of the present application, as shown in fig. 3-5, a light guide assembly 300 may include a light guide body 310, a sensing component 320, and a detection circuit 330. The light guiding body 310 includes a first side 311 and a second side 312 disposed opposite to each other; the sensing component 320 includes a first capacitive plate 321 and a second capacitive plate 322, the first capacitive plate 321 being disposed on the first side 311, and the second capacitive plate 322 being disposed on the second side 312.
In embodiments of the present application, the light guide assembly 300 may include one or two light guide bodies 310. The number of light guide bodies 310 may be set according to the type of sensor. Taking an infrared sensor as an example, as shown in fig. 3, the light guide assembly 300 includes two light guide bodies, wherein one light guide body 310 is located between a screen of an electronic device and an emitting end of the infrared sensor, and the other light guide body 310 is located between the screen of the electronic device and a receiving end of the infrared sensor. Each light guiding body 310 has a first side 311 and a second side 312, each light guiding body 320 is provided with a first capacitor plate 321 and a second capacitor plate 322, the first capacitor plate 321 is disposed on the first side 311, and the second capacitor plate 322 is disposed on the second side 312.
The first capacitor plate 321 may be a metal layer, and the second capacitor plate 322 may be a metal layer, which is not limited herein.
In some embodiments, the first capacitor plate 321 covers the first side 311, that is, the area of the first capacitor plate 321 is equal to the area of the first side 311. The second capacitor plate 322 covers the second side 312, that is, the area of the second capacitor plate 322 is equal to the area of the second side 312. According to the embodiment of the application, the capacitor electrode plate can completely cover the surface of the light guide main body, so that the phenomenon that the light guide main body is not detected due to local fracture is avoided, and the detection accuracy is improved.
It should be noted that, the first capacitor plate 321 may be embedded in the first side 311, or may be attached to the first side 311; the second capacitor plate 322 may be embedded in the second side 312, or may be attached to the second side 312, which is not limited herein.
As shown in fig. 4, the detection circuit 330 is a capacitance detection circuit, and the capacitance detection circuit includes a first detection pin, a second detection pin and an output terminal; the first detection pin is connected to the signal output port of the first capacitor plate 321, and the second detection pin is connected to the signal output port of the second capacitor plate 322. The capacitance detection circuit is used for acquiring a capacitance signal output by the sensing component.
In the case where there are two light guide bodies 310, the capacitance value of the capacitor can be detected by one capacitance detection circuit. As shown in fig. 5, for example, the detection circuit 330 includes a third detection pin, a fourth detection pin, a fifth detection pin, and a sixth detection pin, where the third detection pin and the fourth detection pin are respectively connected to two capacitive plates of one of the light guiding bodies 310, and the fifth detection pin and the sixth detection pin are respectively connected to two capacitive plates of the other light guiding body 310. In the case where there are two light guide bodies 310, the capacitance value of the capacitor may be detected by two independent capacitance detection circuits.
In this embodiment, the first capacitor plate 321, the light guiding body 310, and the second capacitor plate 322 form a capacitor, and the detection circuit 330 is connected to the first capacitor plate 321 and the second capacitor plate 322 through the first detection pin and the second detection pin, respectively, so that the change of the capacitance value of the capacitor (the first capacitor plate-the light guiding body-the second capacitor plate) can be detected in real time, so as to determine whether the light guiding body is broken according to the change of the capacitance value. When the light guide body 310 is not broken, the light guide body 310 serves as an insulating medium between two polar plates of the capacitor; when the light guide body 310 is broken, the dielectric medium between the two plates of the capacitor is changed due to the entry of air, so that the dielectric constant is drastically changed, and the capacitance value is suddenly changed. Based on this, the embodiment of the application sets the capacitor electrode plates on two opposite sides of the light guiding main body, so that the capacitor electrode plates and the light guiding main body form a capacitor, and whether the light guiding main body is broken or not can be identified according to the change of the capacitance signal output by the capacitance detection circuit.
According to further embodiments of the present invention, as shown in fig. 6-8, a light guide assembly 400 may include a light guide body 410, a sensing component 420, and a detection circuit 430. The sensing part 420 includes at least one wire disposed inside the light guide body 410.
In embodiments of the present application, the light guide assembly 400 may include one or two light guide bodies 410. The number of light guide bodies 410 may be set according to the type of sensor. Taking an infrared sensor as an example, as shown in fig. 6, the light guide assembly 400 includes two light guide bodies, wherein one light guide body 410 is located between a screen of an electronic device and an emitting end of the infrared sensor, and the other light guide body 410 is located between the screen of the electronic device and a receiving end of the infrared sensor. Each light guiding body 410 includes a sensing part 420, i.e., at least one wire is disposed inside each light guiding body 410.
In some embodiments, as shown in fig. 7, the wires (sensing parts 420) are multiple, and the multiple wires are uniformly distributed inside the light guiding body 410. According to the embodiment of the application, the plurality of metal wires are uniformly distributed in the light guide main body 410, so that the phenomenon that the light guide main body is not detected due to local fracture can be avoided, and the detection accuracy is improved.
The detection circuit 430 is an impedance detection circuit, and the impedance detection circuit includes a plurality of detection pins connected to the ends of the metal wire in a one-to-one correspondence manner.
In the case of multiple wires, the detection circuit 430 includes multiple detection pins connected in a one-to-one correspondence with the ends of each wire. As shown in fig. 7 and 8, for example, 3 wires are disposed in the light guiding body 410, and the first wire, the second wire, and the third wire are connected to the impedance detection circuit. In the case where there are two light guide bodies 410, the detection may be performed by one impedance detection circuit or by two independent impedance detection circuits.
In some embodiments, the light guide assembly 400 further includes metal contacts 440, the metal contacts 440 being disposed at both ends of the wire, the metal contacts 440 acting as signal output ports for connection to the detection circuit 430.
Fig. 9 shows a specific impedance detection circuit. The process of detecting the light guiding body by the impedance detecting circuit will be described with reference to fig. 9. As shown in fig. 9, the impedance detection circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a reference resistor Rf, and an operational amplifier A1. The power input end of the impedance detection circuit is connected with the positive electrode of the voltage source U1, and the output end of the impedance detection circuit is connected with the processing module 131. One end of the first metal wire is connected with the positive electrode of the voltage source U1, the other end of the first metal wire is connected with the first end of the first resistor R1, and the second end of the first resistor R1 is connected with the inverting input end of the operational amplifier A1; one end of the second metal wire is connected with the positive electrode of the voltage source U1, the other end of the second metal wire is connected with the first end of the second resistor R2, and the second end of the second resistor R2 is connected with the inverting input end of the operational amplifier A1; one end of the third metal wire is connected with the positive electrode of the voltage source U1, the other end of the third metal wire is connected with the first end of the third resistor R3, and the second end of the third resistor R3 is connected with the inverting input end of the operational amplifier A1. The output terminal of the operational amplifier A1 is connected to the first input terminal of the processing module 131, and the non-inverting input terminal of the operational amplifier A1 is grounded. The first end of the reference resistor Rf is connected with the inverting input end of the operational amplifier A1, and the second end of the reference resistor Rf is connected with the output end of the operational amplifier A1. The reference voltage input by the voltage source U1 to the impedance detection circuit is V ref . The output voltage of the impedance detection circuit to the processing module 131 is V 0 。
It should be noted that, the wire in the embodiment of the present application is a frangible wire, that is, when the light guiding body breaks, the wire breaks. That is, the wire acts as a switch in the impedance detection circuit.
When the light guide main body is not broken, the first metal wire, the second metal wire and the third metal wire are all in a communication state, namely a first resistor R1, a second resistor R2 in the impedance detection circuit,The third resistor R3 is connected into the circuit. At this time, the impedance detected by the impedance detection circuit is the resistance value R of the first resistor R1, the second resistor R2 and the third resistor R3 connected in parallel OK . The output voltage of the impedance detection circuit to the processing module 131 is
When the light guiding body breaks, the wire at the breaking part breaks, i.e. a part of the switches in the impedance detection circuit is opened (assuming that the first wire is opened), i.e. the second resistor R2 and the third resistor R3 in the impedance detection circuit are connected into the circuit. At this time, the impedance detected by the impedance detection circuit is the resistance value of the unbroken wire after being connected in parallel, namely the resistance value R of the second resistor R2 and the third resistor R3 after being connected in parallel NG . The output voltage of the impedance detection circuit to the processing unit 131 is
When the light guide body breaks, the resistance value detected by the impedance detection circuit changes, namely, the output voltage signal changes. According to the embodiment of the application, the at least one metal wire is arranged in the light guide main body, so that whether the light guide main body is broken or not can be identified according to the change of the voltage signal output by the impedance detection circuit.
The embodiment of the application also provides an electronic device, as shown in fig. 10, which includes a light guide assembly 500, a screen 600, and a proximity sensor 700. The light guiding body is fixed between the proximity sensor and the screen. The light guide assembly 500 may be any of the light guide assemblies described in any of the embodiments above.
In this embodiment, the light guide assembly 500 includes at least one light guide body 510. Illustratively, there are two light guide bodies 510, one light guide body 510 being secured between the emitting end and the screen, and the other light guide body 510 being secured between the receiving end and the screen.
In some embodiments, the proximity sensor may be, for example, an infrared sensor, an ultrasonic sensor, or the like. The processor of the electronic device may determine whether the light guiding body is broken according to the detection signal output by the detection circuit and the receiving end signal output by the proximity sensor.
In other embodiments, the electronic device further comprises an attitude sensor for detecting placement state information of the electronic device. The placement state information of the electronic device includes a screen-up state and a screen-down state. The processor of the electronic device may determine whether the light guiding body is broken according to the detection signal output by the detection circuit, the receiving end signal output by the proximity sensor, and the placement state information of the electronic device output by the posture sensor.
In still other embodiments, a data interface is further provided in the electronic device, where the data interface is configured to receive information about the number of times the screen of the electronic device is turned on and off. The processor of the electronic device can determine whether the light guide main body is broken or not according to the detection signal output by the detection circuit, the receiving end signal output by the proximity sensor, the placement state information of the electronic device output by the gesture sensor and the screen on-off frequency information of the electronic device output by the data interface.
The electronic device 500 may be a mobile phone, a tablet computer, a notebook computer, a palm computer, a wearable device, or the like, which is not limited herein.
The embodiment of the application also provides a detection method of the light guide assembly. The method may be applied to the aforementioned electronic device, see the flowchart shown in fig. 11, and includes the following steps S1100-S1200.
In step S1100, the detection signal output by the sensing unit is obtained by the detection circuit.
Step S1200, determining that the light guiding body is broken and outputting a reminding message when the detection signal meets a preset condition.
In this embodiment of the application, obtain the detected signal of response part output through detection circuit, under the condition that detected signal satisfied the preset condition, confirm that the leaded light main part breaks to when the leaded light main part appears breaking, can in time remind the user, so that the user changes the leaded light subassembly, can avoid the realization that the automatic regulation screen brightness, the conversation that influence electronic equipment of breaking of leaded light main part are close to the screen, prevent functions such as touching, and then can promote user experience to a great extent.
In some embodiments, the step of acquiring, by the detection circuit, the detection signal output by the sensing component may further include: and acquiring a capacitance signal output by the sensing component through a capacitance detection circuit. And then, under the condition that the capacitance signal meets the preset condition, determining that the light guide main body is broken, and outputting reminding information. Wherein, the electric capacity signal satisfies the preset condition, includes: the capacitance value of the capacitance signal is greater than or equal to a first threshold value; alternatively, the capacitance value of the capacitance signal is greater than or equal to the first threshold value, and the number of times the capacitance value of the capacitance signal is greater than or equal to the first threshold value is greater than the second threshold value.
When the light guide body is broken, the dielectric medium between the two polar plates of the capacitor is changed due to the entering of air, so that the dielectric constant is changed drastically, and the capacitance value is suddenly changed. The first threshold is used to measure whether a breakage of the light guiding body has occurred. It should be noted that the first threshold value and the second threshold value are set by those skilled in the art according to the experimental simulation result. For example, the second threshold is 20 times.
In the embodiment of the application, whether the light guide body is broken or not can be determined according to the change of the capacitance signal output by the capacitance detection circuit. Further judging the times that the capacitance value of the capacitance signal is larger than or equal to the first threshold value, misjudgment can be reduced, and recognition accuracy is improved.
In other embodiments, the step of acquiring, by the detection circuit, the detection signal output by the sensing component may further include: the voltage signal output by the sensing part is obtained through the impedance detection circuit. And then, under the condition that the voltage signal meets the preset condition, determining that the light guide main body is broken, and outputting reminding information. Wherein the voltage signal satisfies a preset condition, comprising: the voltage value of the voltage signal is greater than or equal to a third threshold value; alternatively, the voltage value of the voltage signal is greater than or equal to the third threshold value, and the number of times the voltage value of the voltage signal is greater than or equal to the third threshold value is greater than the fourth threshold value.
When the light guide body breaks, the metal wire at the breaking part also breaks, the resistance value detected by the impedance detection circuit changes, and the voltage value of the voltage signal output by the impedance detection circuit also changes. The third threshold is used to measure whether a breakage of the light guiding body has occurred. It should be noted that the third threshold value and the fourth threshold value are set by those skilled in the art according to the experimental simulation result. For example, the fourth threshold is 20 times.
In the embodiment of the application, at least one metal wire is arranged in the light guide main body, so that whether the light guide main body is broken or not can be identified according to the change of the voltage signal output by the impedance detection circuit. The frequency that the voltage value of the voltage signal is larger than or equal to the third threshold value is further judged, so that misjudgment can be reduced, and the accuracy of identification is improved.
In still other embodiments, in order to improve accuracy of identifying whether the light guiding body is broken, after determining that the detection signal meets the preset condition, the detection method of the light guiding assembly may further include: steps S2100-S2200.
In step S2100, when the detection signal meets the preset condition, the transmitting end of the proximity sensor is controlled to transmit the first signal, and the echo signal received by the receiving end of the proximity sensor is obtained.
In step S2200, in a case where the signal strength of the echo signal is greater than or equal to the fifth threshold value and the time for maintaining the state greater than or equal to the fifth threshold value is greater than the sixth threshold value, it is determined that the light guiding body is broken.
The fifth threshold is a temporary calibration threshold of the proximity sensor, when the light guide main body breaks, an optical signal sent by the transmitting end of the proximity sensor is reflected by the light guide main body to enter the receiving end, and the signal intensity of an echo signal received by the receiving end of the proximity sensor can be increased and exceeds a preset range. The temporary calibration threshold is a maximum value of signal intensity of the echo signal received by the receiving end of the proximity sensor when the light body is not broken. In the embodiment of the application, the signal intensity of the echo signal is compared with the temporary calibration threshold value, so that whether the electronic equipment is shielded or not can be judged, and the on-off of the screen of the electronic equipment can be further controlled according to the judgment result.
The sixth threshold is used to reflect a duration exceeding the fifth threshold, which may be, for example, 3 hours. When the signal intensity of the echo signal is greater than or equal to the fifth threshold value, whether the time for maintaining the state greater than or equal to the fifth threshold value is greater than the sixth threshold value is further judged, so that the accuracy of identification can be improved, and false identification is avoided.
In this embodiment, the light guiding body is configured to transmit an electromagnetic wave signal required by the operation of the proximity sensor, and when the light guiding body breaks, a first signal sent by the transmitting end of the proximity sensor is reflected by the light guiding body and enters the receiving end, so that the intensity of an echo signal received by the receiving end of the proximity sensor is increased. Therefore, whether the light guide main body is broken or not is determined by combining the detection signal output by the detection circuit and the echo signal received by the receiving end of the proximity sensor, and the situation that the output detection signal is inaccurate due to the fact that the detection circuit is influenced by external environment factors such as temperature change and electromagnetic interference of electronic equipment can be avoided, so that the accuracy of identifying the broken state of the light guide main body is improved.
In still other embodiments, in order to improve accuracy of identifying whether the light guiding body is broken, after determining that the detection signal meets the preset condition, the detection method of the light guiding assembly may further include: steps S3100-S3300.
Step S3100, when the detection signal meets the preset condition, acquiring the placement state information of the electronic device output by the attitude sensor.
The placement state information of the electronic device includes a screen-up state and a screen-down state.
In step S3200, when the electronic device is placed in an upward screen, the transmitting end of the proximity sensor is controlled to transmit a first signal, and an echo signal received by the receiving end of the proximity sensor is obtained.
In step S3300, when the signal intensity of the echo signal is greater than or equal to the fifth threshold value and the time for maintaining the state greater than or equal to the fifth threshold value is greater than the sixth threshold value, it is determined that the light guiding body is broken.
When the electronic device is placed in an upward screen state, it is indicated that the screen of the electronic device is not blocked, and if the intensity of the echo signal received by the receiving end of the proximity sensor is greater than or equal to the fifth threshold, and the time for maintaining the state greater than or equal to the fifth threshold is greater than the sixth threshold, the state may be caused by the breakage of the light guiding body. When the electronic device is placed in a state that the screen is downward, it is indicated that the screen of the electronic device is blocked, that is, electromagnetic wave signals sent by the proximity sensor in the electronic device can be received by the receiving end of the proximity sensor after being reflected by an obstacle outside the electronic device, at this time, if the intensity of echo signals received by the receiving end of the proximity sensor is greater than or equal to a fifth threshold value, and the time for maintaining the state of being greater than the fifth threshold value is greater than the sixth threshold value, the electromagnetic wave signals may be caused by the breakage of the light guiding main body, or may be caused by the external blocking object of the electronic device. In the embodiment of the application, whether the light guide main body is broken or not is determined by combining the detection signal output by the detection circuit, the echo signal received by the receiving end of the proximity sensor and the placement state information of the electronic equipment, so that the situation that the output detection signal is inaccurate due to the fact that the detection circuit is influenced by external environment factors such as temperature change and electromagnetic interference of the electronic equipment can be avoided, and meanwhile misjudgment caused by a single condition can be avoided, and therefore accuracy of identifying the broken state of the light guide main body is improved.
In still other embodiments, in order to improve accuracy of identifying whether the light guiding body is broken, after determining that the detection signal meets the preset condition, the detection method of the light guiding assembly may further include: steps S4100 to S4400.
In step S4100, in a case where the detection signal satisfies a preset condition, placement state information of the electronic device output by the attitude sensor is acquired.
The placement state information of the electronic device includes a screen-up state and a screen-down state.
In step S4200, in the case where the placement state of the electronic device is the screen facing up, the screen on/off number information output by the data interface is acquired.
The electronic equipment is also provided with a data interface which is used for receiving the information of the number of times of screen on-off of the electronic equipment.
In step S4300, when the number of on/off of the screen is greater than or equal to the seventh threshold, the transmitting end of the proximity sensor is controlled to transmit the first signal, and an echo signal received by the receiving end of the proximity sensor is obtained.
The seventh threshold may be, for example, 20 times.
In step S4400, when the signal intensity of the echo signal is greater than or equal to the fifth threshold value and the time for maintaining the state greater than or equal to the fifth threshold value is greater than the sixth threshold value, it is determined that the light guiding body is broken.
In this embodiment, taking an electronic device as an example of a mobile phone, the mobile phone may include a call approaching screen-off function, that is, in a call process, a proximity sensor in the mobile phone detects whether a shielding object approaches, and when detecting that the shielding object approaches, the mobile phone screen is controlled to be extinguished, so as to avoid the situation of carelessly hanging up a phone. When the light guide body breaks, the light guide body shields electromagnetic wave signals sent by the proximity sensor, so that the electronic equipment is frequently extinguished and lightened, and therefore, whether the light guide body breaks or not can be determined by combining screen on-off frequency information of the electronic equipment.
In the embodiment of the application, whether the light guide main body is broken or not is determined by combining the detection signal output by the detection circuit, the echo signal received by the receiving end of the proximity sensor, the screen on-off frequency information and the placement state information of the electronic equipment, so that the situation that the output detection signal is inaccurate due to the fact that the detection circuit is influenced by external environment factors such as temperature change and electromagnetic interference of the electronic equipment can be avoided, and meanwhile misjudgment caused by single condition can be avoided, and therefore the accuracy of identifying the broken state of the light guide main body is improved.
Referring to fig. 12, a method for detecting the light guide assembly will be described below by taking a capacitance detection circuit as an example. The detection method comprises the following steps: S501-S510.
S501, receiving a capacitance signal output by a capacitance detection circuit.
S502 determines whether the capacitance value of the capacitance signal is greater than or equal to the first threshold, if so, S503 is executed, otherwise S501 is returned.
S503, controlling the count of the first counter to be increased by 1.
S504, judging whether the times of the capacitance value of the capacitance signal being larger than or equal to the first threshold value is larger than the second threshold value, if so, executing S505, otherwise, returning to S501.
S505, judging whether the placement state of the electronic equipment is a screen-up state, if so, executing S506, otherwise, returning to S508.
S506, judging whether the screen on-off times of the electronic equipment is larger than or equal to a seventh threshold value, if so, executing S507, otherwise, returning to S505.
S507, judging whether the time when the signal intensity of the echo signal acquired by the receiving end of the proximity sensor is greater than or equal to a fifth threshold value is greater than a sixth threshold value, if so, executing S509, otherwise, returning to S505.
S508, the count of the first counter is cleared, and S501 is returned.
S509, determining that the light guide body is broken.
S510, sending reminding information to the user.
In the embodiment of the application, whether the light guide main body is broken or not is determined by combining the capacitance signal output by the capacitance detection circuit, the echo signal received by the receiving end of the proximity sensor, the screen on-off frequency information and the placement state information of the electronic equipment, so that the situation that the output detection signal is inaccurate due to the fact that the detection circuit is influenced by external environment factors such as temperature change and electromagnetic interference of the electronic equipment can be avoided, and meanwhile misjudgment caused by single condition can be avoided, and therefore the accuracy of identifying the broken state of the light guide main body is improved.
Referring to fig. 13, a method of detecting the light guide member will be described below using an impedance detection circuit as an example. The detection method comprises the following steps: S601-S610.
S601, receiving a voltage signal output by the impedance detection circuit.
S602 determines whether the voltage value of the voltage signal is greater than or equal to the third threshold, if so, S603 is executed, otherwise S601 is returned.
S603, controlling the count of the first counter to be increased by 1.
S604, judging whether the frequency of the voltage value of the voltage signal is larger than or equal to the third threshold value or not is larger than the fourth threshold value, if yes, executing S605, otherwise, returning to S601.
S605, judging whether the placement state of the electronic equipment is a screen-up state, if so, executing S606, otherwise, returning to S608.
S606, judging whether the screen on-off times of the electronic equipment is larger than or equal to a seventh threshold value, if so, executing S607, otherwise, returning to S605.
S607, judging whether the time when the signal intensity of the echo signal acquired by the receiving end of the proximity sensor is greater than or equal to the fifth threshold is greater than the sixth threshold, if so, executing S609, otherwise, returning to S605.
S608, the count of the first counter is cleared, and S601 is returned.
S609, determining that the light guide body is broken.
S610, sending reminding information to the user.
In the embodiment of the application, whether the light guide main body is broken or not is determined by combining the voltage signal output by the impedance detection circuit, the echo signal received by the receiving end of the proximity sensor, the screen on-off frequency information and the placement state information of the electronic equipment, so that the situation that the output detection signal is inaccurate due to the fact that the detection circuit is influenced by external environment factors such as temperature change and electromagnetic interference of the electronic equipment can be avoided, and meanwhile misjudgment caused by single condition can be avoided, and therefore the accuracy of identifying the broken state of the light guide main body is improved.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above embodiment of the method for detecting a light guide component, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or an instruction, implementing each process of the detection method embodiment of the light guide assembly, and achieving the same technical effect, so as to avoid repetition, and no further description is provided here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), including several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
Claims (9)
1. A light guide assembly, comprising:
a light guide body;
the sensing component is arranged on the light guide main body and is provided with a signal output port;
the detection pin of the detection circuit is electrically connected with the signal output port of the induction component, the detection circuit determines whether the light guide main body is broken or not according to the detection signal output by the induction component,
wherein the sensing component comprises at least one metal wire, and the metal wire is arranged in the light guide main body;
the detection circuit is an impedance detection circuit, the impedance detection circuit comprises a plurality of detection pins which are connected with the end parts of the metal wires in a one-to-one correspondence manner, the metal wires are used as switches in the impedance detection circuit, and when the light guide main body is not broken, at least one metal wire is in a communication state; when the light guide body is broken, the metal wire at the broken part is broken, and a part of the switch in the impedance detection circuit is opened.
2. A light guide assembly as recited in claim 1, wherein the light guide body comprises oppositely disposed first and second sides;
The induction component comprises a first capacitor plate and a second capacitor plate, the first capacitor plate is arranged on the first side face, and the second capacitor plate is arranged on the second side face;
the detection circuit is a capacitance detection circuit, and the capacitance detection circuit comprises a first detection pin and a second detection pin; the first detection pin is connected with the signal output port of the first capacitor plate, and the second detection pin is connected with the signal output port of the second capacitor plate.
3. The light guide assembly of claim 1, wherein the plurality of wires are uniformly distributed within the light guide body.
4. A method of detecting a light guide assembly, applied to an electronic device including the light guide assembly according to any one of claims 1 to 3, the method comprising:
acquiring a detection signal output by the induction component through a detection circuit;
and under the condition that the detection signal meets the preset condition, determining that the light guide main body is broken, and outputting reminding information.
5. The method of claim 4, wherein the sensing component comprises a first capacitive plate and a second capacitive plate, the detection circuit is a capacitive detection circuit, a first detection pin of the capacitive detection circuit is connected to the first capacitive plate, and a second detection pin of the capacitive detection circuit is connected to the second capacitive plate;
The detecting circuit obtains the detection signal output by the sensing component, and the detecting circuit comprises:
acquiring a capacitance signal output by the sensing component through the capacitance detection circuit;
the detection signal meets a preset condition, and comprises the following steps:
the capacitance value of the capacitance signal is larger than or equal to a first threshold value; or,
the capacitance value of the capacitance signal is larger than or equal to a first threshold value, and the times of the capacitance value of the capacitance signal larger than or equal to the first threshold value is larger than a second threshold value.
6. The method of claim 4, wherein the sensing element comprises at least one wire, and the detection circuit is an impedance detection circuit, the impedance detection circuit being coupled to the at least one wire;
the detecting circuit obtains the detection signal output by the sensing component, and the detecting circuit comprises:
acquiring a voltage signal output by the induction component through the impedance detection circuit;
the detection signal meets a preset condition, and comprises the following steps:
the voltage value of the voltage signal is larger than or equal to a third threshold value; or,
the voltage value of the voltage signal is larger than or equal to a third threshold value, and the frequency of the voltage value of the voltage signal larger than or equal to the third threshold value is larger than a fourth threshold value.
7. The method of claim 4, wherein the electronic device further comprises a screen and a proximity sensor, the light guide assembly disposed between the proximity sensor and the screen, the proximity sensor comprising a transmitting end and a receiving end; the method further comprises the steps of:
under the condition that the detection signal meets the preset condition, controlling the transmitting end to transmit a first signal and acquiring an echo signal received by the receiving end;
and determining that the light guide body is broken when the signal strength of the echo signal is greater than or equal to a fifth threshold value and the time for maintaining the state greater than or equal to the fifth threshold value is greater than a sixth threshold value.
8. The method of claim 4, wherein the electronic device further comprises a screen, a proximity sensor, and a gesture sensor, the light guide assembly disposed between the proximity sensor and the screen, the proximity sensor comprising a transmitting end and a receiving end; the method further comprises the steps of:
acquiring the placement state information of the electronic equipment output by the attitude sensor under the condition that the detection signal meets the preset condition;
controlling the transmitting end to send a first signal and acquiring an echo signal received by the receiving end under the condition that the placing state of the electronic equipment is that a screen is upward;
And determining that the light guide body is broken when the signal strength of the echo signal is greater than or equal to a fifth threshold value and the time for maintaining the state greater than or equal to the fifth threshold value is greater than a sixth threshold value.
9. The method of claim 4, wherein the electronic device further comprises a screen, a proximity sensor, a gesture sensor, and a data interface, the light guide assembly disposed between the proximity sensor and the screen, the proximity sensor comprising a transmitting end and a receiving end; the method further comprises the steps of:
acquiring the placement state information of the electronic equipment output by the attitude sensor under the condition that the detection signal meets the preset condition;
acquiring screen on-off frequency information output by the data interface under the condition that the placement state of the electronic equipment is that a screen is upward;
controlling the transmitting end to send out a first signal and acquiring an echo signal received by the receiving end under the condition that the number of on-off times of the screen is larger than or equal to a seventh threshold value;
and determining that the light guide body is broken when the signal strength of the echo signal is greater than or equal to a fifth threshold value and the time for maintaining the state greater than or equal to the fifth threshold value is greater than a sixth threshold value.
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