CN112945987A

CN112945987A - Light guide assembly and detection method thereof

Info

Publication number: CN112945987A
Application number: CN202110123705.2A
Authority: CN
Inventors: 万鹏程
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-06-11
Anticipated expiration: 2041-01-28
Also published as: CN112945987B

Abstract

The application discloses a light guide assembly and a detection method thereof, and belongs to the technical field of electronics. Wherein, light guide assembly includes: a light guide body; an inductive component disposed on the light guide body, the inductive component having a signal output port; and a detection pin of the detection circuit is electrically connected with a signal output port of the induction component, and the detection circuit determines whether the light guide main body is broken or not according to a detection signal output by the induction component. The light guide assembly provided by the embodiment of the application can identify whether the light guide main body is broken or not, and can solve the problem that the broken light guide column is difficult to find in the prior art because the light guide column is arranged inside the electronic equipment.

Description

Light guide assembly and detection method thereof

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 extreme pursuit of the user for the use experience, the performance and appearance requirements of the user for mobile terminals such as mobile phones and tablet computers 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 ratio of the screen display area to the screen area) is higher and higher, and correspondingly, the black edge, on which the front camera, the infrared sensor, the photosensitive sensor and other devices are placed, on the top of the screen of the mobile terminal is narrower and narrower.

In realizing this application in-process, the inventor discovers among the prior art to avoid devices such as infrared sensor and photosensitive sensor to occupy the black border space at screen top, can place infrared sensor and photosensitive sensor in the screen below, often is provided with the leaded light post between infrared sensor and screen, photosensitive sensor, and the leaded light post can be used for in leading-in the screen with the outside ambient light and the infrared light of screen to realize infrared sensor and photosensitive sensor's data acquisition. Because the leaded light post belongs to breakable material, the condition of breaking appears easily in mobile terminal's transportation, equipment or use, however, the leaded light post setting is inside mobile terminal, and assembler and user are difficult to find the leaded light post and appear breaking. Therefore, data collection of the sensor can be influenced, and the realization of functions of automatically adjusting screen brightness, closing a call to a screen, preventing touch and the like of the mobile terminal is influenced.

Disclosure of Invention

The application aims to provide a light guide assembly and a detection method of the light guide assembly, and at least solves one problem that an assembling person and a user are difficult to find that the light guide column is broken when the light guide column is arranged in electronic equipment.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a light guide assembly, including:

a light guide body;

an inductive component disposed on the light guide body, the inductive component having a signal output port;

and a detection pin of the detection circuit is electrically connected with a signal output port of the induction component, and the detection circuit determines whether the light guide main body is broken or not according to a detection signal output by the induction component.

In a second aspect, an embodiment of the present application provides a method for detecting a light guide assembly, which is applied to an electronic device, where the electronic device includes the light guide 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, the present application provides a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the second aspect.

In a fourth aspect, the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the second aspect.

In the embodiment of the application, the response part sets up in the leaded light main part, the response part has signal output port, detection circuitry's detection pin is connected with the signal output part electricity of response part, detection circuitry confirms whether the leaded light main part breaks according to the detected signal of response part, thereby when the leaded light main part breaks, can in time discover, so that the user changes the leaded light subassembly, can avoid the automatic adjustment screen brightness of the fracture influence electronic equipment of leaded light main part, the conversation is close to and goes out the screen, prevent the realization of functions such as touching, and then can promote user experience at 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 partial structural diagram of a first light guide assembly provided in an embodiment of the present application;

FIG. 2 is a schematic circuit diagram of a first light guide assembly according to an embodiment of the present disclosure;

FIG. 3 is a schematic partial structural diagram of a second light guide assembly provided in an embodiment of the present application;

FIG. 4 is a schematic circuit diagram of a second light guide assembly provided in an embodiment of the present application;

FIG. 5 is a schematic circuit diagram of a second light guide assembly provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of a portion of a third light guide assembly provided in an embodiment of the present application;

FIG. 7 is a schematic partial structural diagram of a fourth light guide assembly provided in the embodiments of the present application;

FIG. 8 is a schematic circuit diagram of a fourth light guide assembly provided in the embodiments of the present application;

FIG. 9 is a schematic circuit diagram of a fourth light guiding assembly provided in the embodiments of the present application;

fig. 10 is a schematic structural diagram of a part of an electronic device according to an embodiment of the present application.

Fig. 11 is a schematic flowchart of a detection method of a light guide assembly according to an embodiment of the present application.

Fig. 12 is a schematic flowchart of another detection method for a light guide assembly according to an embodiment of the present disclosure.

Fig. 13 is a schematic flowchart of a detection method for a light guide assembly according to an embodiment of the present disclosure.

Reference numerals:

100. 300, 400, 500-a light guide assembly; 110. 310, 410, 510-a light guiding body; 120. 320, 420-sensing component; 121-signal output port; 130. 330, 430-detection circuit; 131-a processing module; 132-detection module, 133-power supply module; 140-a structural support portion; 440-metal contacts; 311-a first side; 312 — a second side; 321 a first capacitor plate; 322-a second capacitor 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 reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present invention, it is to be understood that the terms "upper", "inner", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the referenced devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, for example, as an electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the application provides a light guide assembly, which can be applied to electronic equipment products and is used for guiding ambient light and the like outside a screen of electronic equipment 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, and is not limited herein.

The structure of a 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, an inductive component 120, and a detection circuit 130.

The sensing part 120 is disposed on the light guiding 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 by the sensing part 120.

The light guiding body 110 may be used 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, etc. 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 material of the conduit of the light guiding body 110 may be selected according to the wavelength of the electromagnetic wave signal to be transmitted. For example, the infrared sensor needs to transmit electromagnetic wave signals with a wavelength of 940nm (infrared band), and the photosensitive sensor needs to transmit electromagnetic wave signals with a wavelength of 400nm to 700nm (visible band), based on which the catheter material of the light guiding body 110 can be, for example, Polymethacrylate (PMMA) or Polycarbonate (PC).

It should be noted that the light guiding body 110 according to the embodiment of the present invention is a light guiding path portion, that is, a portion for transmitting electromagnetic wave signals required by the operation of the sensor. The light guiding body 110 may also include structural support portions. As shown in fig. 1, the light guide body 110 is exemplarily disposed on a structural support portion provided with an accommodating cavity having an opening for accommodating a sensor. The structural support portion is used to fix the light guiding body 110, ensuring that the light guiding body 110 is correctly mounted in the electronic device, i.e. ensuring that the light guiding body corresponds to the transmission or reception path of the sensor.

Further, the number of light guiding bodies may be set according to the type of sensor. Taking a 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 a 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 supporting 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 the embodiment of the present application, fig. 2 shows a schematic circuit diagram of a light guide assembly, and a detection pin of the detection circuit 130 is connected to a signal output port of the sensing component 120, and is used for detecting a detection signal output by the sensing 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, and the processing module 131 obtains a detection signal output by the sensing component 120 through the detection module 132 and determines whether the light guide body 110 is broken according to the detection signal. The power output terminal of the power supply module 133 is connected to the power input terminal 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, which can independently control the on and off of the detection circuit 130, and can reduce the power consumption of the electronic device.

According to some embodiments of the present application, as shown in fig. 3-5, the light guide assembly 300 may include a light guide body 310, an inductive component 320, and a detection circuit 330. The light guiding body 310 includes a first side 311 and a second side 312 oppositely disposed; the inductive element 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, the second capacitive plate 322 being disposed on the second side 312.

In the embodiment of the present application, the light guide assembly 300 may include one or two light guide bodies 310. The number of the light guide bodies 310 may be set according to the type of the 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 the electronic device and a transmitting 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 provided on the first side 311, and the second capacitor plate 322 is provided on the second side 312.

For example, the first capacitor plate 321 may be a metal layer, and the second capacitor plate 322 may also be a metal layer, which is not limited herein.

In some embodiments, the first capacitor plate 321 covers the first side 311, i.e. 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, i.e. 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 plate can completely cover the surface of the light guide main body, the phenomenon that the light guide main body cannot be detected due to local breakage 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 surface 311, or may be attached to the first side surface 311; the second capacitor plate 322 may be embedded in the second side surface 312, or may be attached to the second side surface 312, which is not limited herein.

As shown in fig. 4, the detection circuit 330 is a capacitance detection circuit, which includes a first detection pin, a second detection pin and an output terminal; the first detection pin is connected to a signal output port of the first capacitor plate 321, and the second detection pin is connected to a 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, the third detection pin and the fourth detection pin are respectively connected to two capacitor plates of one of the light guide bodies 310, and the fifth detection pin and the sixth detection pin are respectively connected to two capacitor plates of the other light guide body 310. In the case where there are two light guiding 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 guide 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, and can detect a change in capacitance value of the capacitor (the first capacitor plate, the light guide body, and the second capacitor plate) in real time, so as to determine whether the light guide body is broken according to the change in capacitance value. When the light guide body 310 is not broken, the light guide body 310 serves as an insulating medium between two plates of the capacitor; when the light guide body 310 is broken, the insulating medium between the two plates of the capacitor is changed due to the air entering, which causes a drastic change in the dielectric constant, resulting in a sudden change in the capacitance value. Based on this, this application embodiment makes capacitive plate and light guide main part form the condenser through set up the capacitive plate at two relative sides of light guide main part to can discern according to the change of the capacitance signal of capacitance detection circuit output and lead the light guide main part and break.

According to still further embodiments of the present invention, as shown in fig. 6-8, the light guide assembly 400 may include a light guide body 410, an inductive component 420, and a detection circuit 430. The sensing part 420 includes at least one wire disposed inside the light guide body 410.

In the embodiment of the present application, the light guide assembly 400 may include one or two light guide bodies 410. The number of the light guide bodies 410 may be set according to the type of the 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 the electronic device and a transmitting 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 an induction 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 metal wire (the sensing part 420) is a plurality of metal wires 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 cannot be detected due to local breakage can be avoided, and the detection accuracy is improved.

The detection circuit 430 is an impedance detection circuit that includes a plurality of detection pins connected in one-to-one correspondence with the ends of the wire.

In the case of including a plurality of wires, the sensing circuit 430 includes a plurality of sensing pins connected in one-to-one correspondence with the end of each wire. As shown in fig. 7 and 8, for example, 3 metal wires are disposed in the light guide body 410, and the first metal wire, the second metal wire, and the third metal wire are all connected to the impedance detection circuit. In the case where there are two light guide bodies 410, detection may be performed by one impedance detection circuit or may be performed by two independent impedance detection circuits.

In some embodiments, the light guide assembly 400 further comprises metal contacts 440, the metal contacts 440 are disposed at both ends of the metal wire, and the metal contacts 440 serve as signal output ports for connecting with the detection circuit 430.

Fig. 9 shows a specific impedance detection circuit. A process of detecting the light guiding body by the impedance detection circuit is explained 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 a 1. The power input end of the impedance detection circuit is connected with the positive pole 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 wire is connected with the anode of a voltage source U1, the other end of the first wire is connected with the first end of a first resistor R1, and the second end of the first resistor R1 is connected to the inverting input end of an operational amplifier A1; one end of the second wire is connected with the anode of a voltage source U1, the other end of the second wire is connected with the first end of a second resistor R2, and the second end of the second resistor R2 is connected to the inverting input end of an operational amplifier A1; one end of the third wire is connected with the anode of a voltage source U1, the other end of the third wire is connected with the first end of a third resistor R3, and the second end of the third resistor R3 is connected to the inverting input end of an 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 terminal of the reference resistor Rf is connected to the inverting input terminal of the operational amplifier A1, and the second terminal of the reference resistor Rf is connected to the input of the operational amplifier A1And the output end is connected. The reference voltage input to the impedance detection circuit by the voltage source U1 is V_ref. The output voltage from the impedance detection circuit to the processing module 131 is V₀。

It should be noted that the metal wires in the embodiments of the present application are breakable metal wires, that is, when the light guide body is broken, the metal wires are broken. That is, the wire acts as a switch in the impedance detection circuit.

When the light guide body is not broken, the first metal wire, the second metal wire and the third metal wire are all in a connected state, namely, the first resistor R1, the second resistor R2 and the third resistor R3 in the impedance detection circuit are all 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 from the impedance detection circuit to the processing module 131 is

When the light guide body is broken, the wires at the broken position are broken, i.e., part of the switches in the impedance detection circuit are turned off (assuming that the first wires are turned off), 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 wires connected in parallel, i.e., the resistance value R of the second resistor R2 and the third resistor R3 connected in parallel_NG. The output voltage from the impedance detection circuit to the processing unit 131 is

When the light guide body is broken, the resistance value detected by the impedance detection circuit changes, that is, the output voltage signal changes. The embodiment of the application sets up at least one wire through the inside at leaded light main part to whether can discern leaded light main part and break according to the change of the voltage signal of impedance detection circuit output.

An embodiment of the present 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 the light guide assembly described in any of the previous embodiments.

In this embodiment, the light guide assembly 500 includes at least one light guide body 510. Illustratively, there are two light guiding bodies 510, wherein one light guiding body 510 is fixed between the emitting end and the screen, and the other light guiding body 510 is fixed 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 still other embodiments, the electronic device further includes a posture 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 guide 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 attitude sensor.

In still other embodiments, a data interface is further disposed in the electronic device, and the data interface is configured to receive information about the number of times that a screen of the electronic device is turned on or off. The processor of the electronic device can determine whether the light guide main body is broken 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 attitude 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, or a wearable device, and is not limited herein.

The embodiment of the application also provides a detection method of the light guide assembly. The method can be applied to the aforementioned electronic device, and referring to the flowchart shown in fig. 11, the method includes the following steps S1100-S1200.

Step S1100, a detection signal output by the sensing component is obtained by the detection circuit.

Step S1200, determining that the light guiding main body is broken when the detection signal satisfies a preset condition, and outputting a prompt message.

In the embodiment of the application, acquire the detected signal of response part output through detection circuitry, satisfy the condition of default condition at detected signal, confirm that the leaded light main part breaks, thereby when the leaded light main part breaks, can in time remind the user, so that the user changes the leaded light subassembly, can avoid the automatic adjustment screen brightness of the fracture influence electronic equipment of leaded light main part, the conversation is close to and goes out the screen, prevent the realization of functions such as touching, and then can promote user experience at 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 induction 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 capacitance signal satisfies the preset condition, including: the capacitance value of the capacitance signal is greater than or equal to a first threshold value; or the capacitance value of the capacitance signal is greater than or equal to the first threshold, and the number of times that the capacitance value of the capacitance signal is greater than or equal to the first threshold is greater than the second threshold.

When the light guide main body is broken, the insulating medium between two polar plates of the capacitor is changed due to the entering of air, so that the dielectric constant is changed violently, and the capacitance value is changed suddenly. The first threshold is used to gauge whether a light guiding body break has occurred. It should be noted that the first threshold and the second threshold 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 present application, whether the light guiding body is broken or not may be determined according to a change of the capacitance signal output from the capacitance detection circuit. And the times that the capacitance value of the capacitance signal is greater than or equal to the first threshold value are further judged, so that the misjudgment can be reduced, and the identification accuracy is improved.

In other embodiments, the step of acquiring the detection signal output by the sensing component through the detection circuit may further include: and acquiring a voltage signal output by the induction component through an 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 the preset condition, including: the voltage value of the voltage signal is greater than or equal to a third threshold value; or the voltage value of the voltage signal is greater than or equal to the third threshold, and the number of times that the voltage value of the voltage signal is greater than or equal to the third threshold is greater than the fourth threshold.

When the light guide main body is broken, the metal wire at the broken part is also broken, the resistance value detected by the impedance detection circuit is changed, and the voltage value of the voltage signal output by the impedance detection circuit is changed accordingly. The third threshold is used to gauge whether a light guiding body break has occurred. It should be noted that the third threshold and the fourth threshold 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 body, so that whether the light guide body is broken or not can be identified according to the change of the voltage signal output by the impedance detection circuit. And the frequency of the voltage value of the voltage signal being greater than or equal to the third threshold is further judged, so that the misjudgment can be reduced, and the identification accuracy is improved.

In still other embodiments, in order to improve the accuracy of identifying whether the light guide body is broken, after determining that the detection signal satisfies the preset condition, the detection method of the light guide assembly may further include: steps S2100-S2200.

In step S2100, the transmitting end of the proximity sensor is controlled to send a first signal and obtain an echo signal received by the receiving end of the proximity sensor when the detection signal meets a preset condition.

In step S2200, when the signal intensity of the echo signal is greater than or equal to the fifth threshold and the time for maintaining the state of being greater than or equal to the fifth threshold is greater than the sixth threshold, it is determined that the light guide body is broken.

The fifth threshold is a temporary calibration threshold of the proximity sensor, when the light guide main body is broken, 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 value is a maximum value of the signal intensity of the echo signal received by the receiving end of the proximity sensor when the light guide 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, 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 the length of time that exceeds 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, whether the time for maintaining the state of greater than or equal to the fifth threshold is greater than the sixth threshold is further judged, so that the accuracy of identification can be improved, and false identification is avoided.

In this embodiment, the light guide main body is used for transmitting electromagnetic wave signals required by the operation of the proximity sensor, when the light guide main body is broken, a first 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 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, the condition 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 of electronic equipment and electromagnetic interference 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 the accuracy of identifying whether the light guide body is broken, after determining that the detection signal satisfies the preset condition, the detection method of the light guide assembly may further include: steps S3100-S3300.

And a step S3100, acquiring the placement state information of the electronic device output by the attitude sensor when the detection signal satisfies a preset condition.

The placement state information of the electronic device includes a screen-up state and a screen-down state.

Step S3200, in a case that the electronic device is placed with the screen facing upward, controlling the transmitting end of the proximity sensor to transmit a first signal, and acquiring an echo signal received by the receiving end of the proximity sensor.

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 which the state of being greater than or equal to the fifth threshold value is maintained is greater than the sixth threshold value, it is determined that the light guide body is broken.

When the electronic device is placed in a state that the screen faces upwards, 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 value and the time for maintaining the state of greater than or equal to the fifth threshold value is greater than the sixth threshold value, the situation may be caused by the breakage of the light guide main body. When the electronic device is placed in a state that the screen faces downwards, the screen of the electronic device is shielded, that is, an electromagnetic wave signal sent by a proximity sensor in the electronic device can be reflected by an obstacle outside the electronic device and then received by a receiving end of the proximity sensor, at this time, if the intensity of an echo signal 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 a sixth threshold value, the situation may be caused by breakage of the light guide main body, and may also be caused by an external shielding 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 device, the condition 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 device can be avoided, meanwhile, misjudgment caused by a single condition can be avoided, and therefore the accuracy of identifying the broken state of the light guide main body is improved.

In still other embodiments, in order to improve the accuracy of identifying whether the light guide body is broken, after determining that the detection signal satisfies the preset condition, the detection method of the light guide assembly may further include: steps S4100-S4400.

Step S4100 acquires the placement state information of the electronic device output by the attitude sensor when the detection signal satisfies a preset condition.

Step S4200, when the electronic device is placed with the screen facing upward, acquiring the information of the number of times of turning on and off the screen output by the data interface.

The electronic equipment is also provided with a data interface, and the data interface is used for receiving the on-off frequency information of the screen of the electronic equipment.

And step S4300, controlling the transmitting end of the proximity sensor to send a first signal and acquiring an echo signal received by the receiving end of the proximity sensor under the condition that the number of times of turning on and off the screen is greater than or equal to a seventh threshold value.

The seventh threshold may be, for example, 20 times.

In step S4400, it is determined that the light guide body is broken 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 of being greater than or equal to the fifth threshold value is greater than the sixth threshold value.

In this embodiment, taking an electronic device as an example of a mobile phone, the mobile phone may include a function of closing a call and turning off a screen, that is, in a call process, a proximity sensor in the mobile phone detects whether a blocking object is approaching, and when detecting that the blocking object is approaching, the mobile phone screen is controlled to turn off, so as to avoid an accidental call hang-up. When the light guide main body is broken, the light guide main body shields electromagnetic wave signals sent by the proximity sensor, so that the electronic equipment frequently extinguishes and lights the screen, and whether the light guide main body is broken 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 on-off frequency information of the screen and the placement state information of the electronic equipment, the condition 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 of the electronic equipment and electromagnetic interference can be avoided, meanwhile, misjudgment caused by a 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.

And S501, receiving the capacitance signal output by the capacitance detection circuit.

S502 judges whether the capacitance value of the capacitance signal is larger than or equal to the first threshold value, if so, S503 is executed, otherwise, the S501 is returned.

And S503, controlling the counting of the first counter to increase by 1.

S504, judging whether the number of times that the capacitance value of the capacitance signal is larger than or equal to the first threshold is larger than a second threshold, if so, executing S505, otherwise, returning to S501.

S505, judging whether the placing 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.

And S507, judging whether the time that 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 a sixth threshold, if so, executing S509, otherwise, returning to S505.

S508 clears the count of the first counter, and returns to S501.

And S509, determining that the light guide body is broken.

And S510, sending out 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 on-off frequency information of the screen and the placement state information of the electronic equipment, the condition 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 of the electronic equipment and electromagnetic interference can be avoided, meanwhile, misjudgment caused by a 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 for detecting the light guide assembly will be described below by taking an impedance detection circuit as an example. The detection method comprises the following steps: S601-S610.

S601, receiving the voltage signal output by the impedance detection circuit.

S602 judges whether the voltage value of the voltage signal is greater than or equal to a third threshold value, if so, S603 is executed, otherwise, the S601 is returned to.

And S603, controlling the counting of the first counter to be increased by 1.

S604, judging whether the number of times that the voltage value of the voltage signal is larger than or equal to the third threshold is larger than a fourth threshold, if so, executing S605, otherwise, returning to S601.

S605, judging whether the placing 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 that the signal intensity of the echo signal collected by the receiving end of the proximity sensor is larger than or equal to the fifth threshold is larger than the sixth threshold, if so, executing S609, otherwise, returning to S605.

S608 clears the count of the first counter, and returns to S601.

And S609, determining that the light guide body is broken.

S610, sending out 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 on-off frequency information of the screen and the placement state information of the electronic equipment, the condition 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 of the electronic equipment and electromagnetic interference can be avoided, meanwhile, misjudgment caused by a 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 embodiment of the detection method for a light guide assembly, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the 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 (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement each process of the embodiment of the detection method for a light guide assembly, and can achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, 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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A light guide assembly, comprising:

a light guide body;

2. A light guide assembly according to claim 1, wherein the light guide body comprises first and second oppositely disposed 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 a signal output port of the first capacitor plate, and the second detection pin is connected with a signal output port of the second capacitor plate.

3. A light guide assembly according to claim 1, wherein the sensing component comprises at least one wire disposed inside the light guide body;

the detection circuit is an impedance detection circuit which comprises a plurality of detection pins connected with the end parts of the metal wires in a one-to-one correspondence mode.

4. A light guide assembly according to claim 3, wherein the wires are a plurality of wires, and the plurality of wires are uniformly distributed in the light guide body.

5. A method for detecting a light guide assembly, applied to an electronic device comprising the light guide assembly according to any one of claims 1 to 4, the method comprising:

6. The method of claim 5, wherein the sensing component comprises a first capacitor plate and a second capacitor plate, the detection circuit is a capacitance detection circuit, a first detection pin of the capacitance detection circuit is connected with the first capacitor plate, and a second detection pin of the capacitance detection circuit is connected with the second capacitor plate;

the obtaining of the detection signal output by the sensing component through the detection circuit includes:

acquiring a capacitance signal output by the induction component through the capacitance detection circuit;

the detection signal satisfies a preset condition, including:

the capacitance value of the capacitance signal is greater than or equal to a first threshold value; alternatively, the first and second electrodes may be,

the capacitance value of the capacitance signal is larger than or equal to a first threshold value, and the times that the capacitance value of the capacitance signal is larger than or equal to the first threshold value are larger than a second threshold value.

7. The method of claim 5, wherein the inductive component comprises at least one wire, the detection circuit is an impedance detection circuit, and the impedance detection circuit is connected to the at least one wire;

acquiring a voltage signal output by the induction component through the impedance detection circuit;

the detection signal satisfies a preset condition, including:

the voltage value of the voltage signal is greater than or equal to a third threshold value; alternatively, the first and second electrodes may be,

the voltage value of the voltage signal is greater than or equal to a third threshold, and the number of times that the voltage value of the voltage signal is greater than or equal to the third threshold is greater than a fourth threshold.

8. The method of claim 5, wherein the electronic device further comprises a screen and a proximity sensor, wherein the light guide assembly is disposed between the proximity sensor and the screen, and wherein the proximity sensor comprises a transmitting end and a receiving end; the method further comprises the following steps:

under the condition that the detection signal meets a preset condition, controlling the transmitting end to send 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 intensity of the echo signal is greater than or equal to a fifth threshold value and the time for maintaining the state of greater than or equal to the fifth threshold value is greater than a sixth threshold value.

9. The method of claim 5, wherein the electronic device further comprises a screen, a proximity sensor, and an attitude sensor, wherein the light guide assembly is disposed between the proximity sensor and the screen, wherein the proximity sensor comprises a transmitting end and a receiving end; the method further comprises the following steps:

under the condition that the detection signal meets a preset condition, obtaining the placement state information of the electronic equipment output by the attitude sensor;

under the condition that the electronic equipment is placed with the screen facing upwards, controlling the transmitting terminal to send a first signal and acquiring an echo signal received by the receiving terminal;

10. The method of claim 5, wherein the electronic device further comprises a screen, a proximity sensor, an attitude sensor, and a data interface, wherein the light guide assembly is disposed between the proximity sensor and the screen, wherein the proximity sensor comprises a transmitting end and a receiving end; the method further comprises the following steps:

under the condition that the electronic equipment is placed in a state that the screen faces upwards, screen on-off frequency information output by the data interface is acquired;

under the condition that the number of times of on-off of the screen is greater than or equal to a seventh threshold value, controlling the transmitting terminal to transmit a first signal and acquiring an echo signal received by the receiving terminal;