Detection device and electronic equipment

Abstract

The invention relates to a detection device and electronic equipment, and the detection device comprises a transmitting unit group which transmits a first electromagnetic signal outwards at a first period; and the receiving unit group receives a second electromagnetic signal, and the second electromagnetic signal is an electromagnetic signal formed by reflecting the first electromagnetic signal. The first electromagnetic signal is transmitted by the transmitting unit group in the first period, and then the second electromagnetic signal formed by the reflection of the first electromagnetic signal is received by the receiving unit group, so that the radiation duration of the electromagnetic signal to other parts is reduced, and the interference of the detection device to other parts is reduced at relatively low cost.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic equipment detection, and in particular to a detection device and an electronic equipment. Background Art

[0002] With the rapid development of electronic technology, many electronic devices have become indispensable in people's daily lives. In order to enable the electronic device to change its state according to the user's answering posture when the user is making a voice call, the electronic device is provided with a distance detection device, which can measure the distance between the user and the electronic device. When the user is close to the electronic device, the screen of the electronic device goes out to prevent the user from accidentally touching the screen when answering the voice; when the user is far away from the electronic device, the screen of the electronic device lights up so that the user can continue to use the electronic device. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a detection device and an electronic device.

[0004] According to a first aspect of an embodiment of the present disclosure, a detection device is provided, comprising: a transmitting unit group, which transmits a first electromagnetic signal outwardly in a first period; and a receiving unit group, which receives a second electromagnetic signal, wherein the second electromagnetic signal is an electromagnetic signal formed by reflection of the first electromagnetic signal.

[0005] In some embodiments, the receiving unit group and the transmitting unit group enter a receiving state in synchronization with the first cycle, wherein the receiving unit group in the receiving state receives the second electromagnetic signal.

[0006] In some embodiments, the transmitting unit group includes a transmitting unit, the receiving unit group includes a receiving unit, and the transmitting units are arranged in a setting manner, and the setting manner at least includes multiple transmitting units being arranged around the receiving unit, multiple receiving units being arranged around the transmitting unit, or multiple transmitting units and multiple receiving units being arranged side by side.

[0007] In some embodiments, the transmitting unit has a reflection area, which is an area around the transmitting unit where the first electromagnetic signal is scattered when being reflected back to the transmitting unit group, wherein the receiving unit group is located in the reflection area.

[0008] In some embodiments, some of the multiple transmitting units emit the first electromagnetic signal outwardly with a second period, and the second period is different from the first period; and / or other some of the multiple transmitting units emit the first electromagnetic signal outwardly with a second period, and the second period is the same as the first period.

[0009] In some embodiments, the frequency of the first cycle is less than or equal to 83 Hz.

[0010] In some embodiments, the first electromagnetic signal is an infrared signal and the second electromagnetic signal is an infrared signal.

[0011] In some embodiments, the detection device includes: a detection circuit, the detection circuit includes a processing module, the processing module includes an input end and an output end; the input end of the processing module is electrically connected to the receiving unit, and the output end of the processing module is electrically connected to the transmitting unit group, wherein the processing module controls the transmitting unit group to emit a first electromagnetic signal outward in the first cycle, and the processing module controls the receiving unit group to enter the receiving state in the first cycle.

[0012] In some embodiments, the processing module includes: an amplifier, which is electrically connected to the receiving unit group; an analog-to-digital conversion unit, which is electrically connected to the amplifier; and a processing unit, one end of which is electrically connected to the analog-to-digital conversion unit and the other end of which is electrically connected to the transmitting unit group.

[0013] In some embodiments, the processing module includes a bandpass filter, which is disposed in the processing unit and is used to filter signal noise generated when the receiving unit group receives the second electromagnetic signal.

[0014] In some embodiments, the receiving unit group has a signal amplifying component, and the signal amplifying component includes a convex lens group and / or a Fresnel lens.

[0015] According to a second aspect of an embodiment of the present disclosure, an electronic device is provided, comprising: a display screen; and the detection device described in any one of the first aspects, wherein the detection device is arranged below the display screen.

[0016] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the present disclosure transmits a first electromagnetic signal in a first period through a transmitting unit group, and then receives a second electromagnetic signal formed by the reflection of the first electromagnetic signal through a receiving unit group, thereby reducing the radiation time of the electromagnetic signal to other components, and reducing the interference of the detection device to other components at a relatively low cost.

[0017] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0019] Figure 1 The diagram is a schematic structural diagram of an electronic device according to an exemplary embodiment.

[0020] Figure 2 It is a signal transmission timing diagram of a transmission unit group of a detection device according to an exemplary embodiment.

[0021] Figure 3 The diagram is a schematic structural diagram of an electronic device according to an exemplary embodiment.

[0022] Figure 4 The diagram is a schematic structural diagram of an electronic device according to an exemplary embodiment.

[0023] Figure 5 is a circuit structure diagram of a detection device according to an exemplary embodiment. DETAILED DESCRIPTION

[0024] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0025] In the related art, the distance detection device of the electronic device often uses infrared rays for distance measurement. The detection device can emit infrared rays and receive infrared rays reflected by other external objects, so as to determine the distance of the external object according to the time difference between sending and receiving. However, the infrared rays emitted by the detection device will cause the luminescent material of the display screen of the electronic device to be excited and emit light, which will cause light spots on the display screen, thereby affecting the display effect of the display screen of the electronic device.

[0026] In one design, the electronic device can use long-wave infrared light for distance measurement. Long-wave infrared light can avoid the infrared band that excites the luminous material of the electronic device's display screen, thereby reducing the light spots produced on the display screen. However, the related equipment is relatively expensive.

[0027] In another design, the electronic device can use a narrow-angle infrared emission method and reduce the intensity of the infrared rays, thereby reducing the size and brightness of the display screen spot and improving the display screen effect of the electronic device. However, the design cost of this solution is relatively high.

[0028] In order to solve the above technical problems, according to an embodiment of the present disclosure, a detection device is provided, which includes: a transmitting unit group, which transmits a first electromagnetic signal outward in a first period; and a receiving unit group, which receives a second electromagnetic signal, which is an electromagnetic signal formed by reflection of the first electromagnetic signal.

[0029] The present invention transmits a first electromagnetic signal in a first period through a transmitting unit group, and then receives a second electromagnetic signal formed by reflection of the first electromagnetic signal through a receiving unit group, thereby reducing the radiation time of the electromagnetic signal to other components and reducing the interference of the detection device to other components at a relatively low cost.

[0030] It can be understood that the detection device involved in the present disclosure can be applicable to any terminal listed below.

[0031] It is understandable that the terminal involved in the present disclosure may also be referred to as a terminal device, a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal, MT), etc., which is a device that provides voice and / or data connectivity to users. For example, the terminal may be a handheld device with a wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: a smart phone (Mobile Phone), a pocket computer (Pocket Personal Computer, PPC), a handheld computer, a personal digital assistant (Personal Digital Assistant, PDA), a laptop computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0032] Figure 1 The diagram is a schematic structural diagram of an electronic device according to an exemplary embodiment. Figure 2 It is a signal transmission timing diagram of a transmission unit group of a detection device according to an exemplary embodiment.

[0033] In some embodiments, Figure 1 As shown, the detection device may include: a transmitting unit group 1 and a receiving unit group 2.

[0034] The transmitting unit group 1 of the detection device can transmit a first electromagnetic signal outward at a first time.

[0035] When the first electromagnetic signal encounters an external object, it can be reflected by the external object and form a second electromagnetic signal. The second electromagnetic signal can be returned to the receiving unit group 2 of the detection device. The receiving unit group 2 can receive the second electromagnetic signal returned to the detection device at a second time, thereby completing the electromagnetic signal receiving and sending operation.

[0036] By comparing the first time and the second time, the time difference between the transmitting unit group 1 transmitting the first electromagnetic signal and the receiving unit group 2 receiving the second electromagnetic signal can be known, so that the detection device can calculate the distance between the detection device and the external object.

[0037] Among them, the transmitting unit group 1 can emit a first electromagnetic signal outward in a first period, which can reduce the transmission time of the first electromagnetic signal emitted by the transmitting unit group 1, thereby reducing the length of time that other components of other electronic devices are irradiated by the electromagnetic signal, and reducing the interference of the transmitting unit group 1 to other components at a lower cost.

[0038] The other components of the electronic device may be any components in the electronic device that may be interfered by the first electromagnetic signal, for example, the luminous material of the display screen.

[0039] For example, Figure 2 As shown, the transmitting unit group 1 can be Figure 2 The first electromagnetic signal is emitted outwardly in the G period, and the first electromagnetic signal can be an infrared signal.

[0040] like Figure 2 As shown, in one G cycle having 5 unit times, the transmitting unit group 1 can transmit the first electromagnetic signal in 4 unit times, and the transmitting unit group 1 can stop transmitting the first electromagnetic signal in 1 unit time.

[0041] In one G cycle, the ratio of the time when the emission unit group 1 emits the first electromagnetic signal to the time when the emission unit group 1 stops emitting the first electromagnetic signal is 4:1. The luminescent material of the display screen will be excited by the electromagnetic signal of the detection device only 80% of the time, thereby reducing the excitation and luminescence time of the luminescent material of the display screen by the detection device, thereby weakening the light spot generated by the detection device on the display screen, optimizing the display effect of the display screen, and reducing the interference of the detection device on the luminescent material of the display screen at a lower cost.

[0042] The present disclosure is not limited thereto, and the ratio of the time when the transmitting unit group 1 transmits the first electromagnetic signal to the time when the transmitting unit group 1 stops transmitting the first electromagnetic signal can be adjusted according to parameters such as specific electromagnetic signal requirements and electromagnetic signal strength.

[0043] In some embodiments, the receiving unit group 2 can enter a receiving state in a first cycle in synchronization with the transmitting unit group 1, and the receiving unit group 2 in the receiving state can receive a second electromagnetic signal.

[0044] In the normal use environment of the electronic device, there are interfering electromagnetic signals that can interfere with the detection device. For example, when the electromagnetic signal used by the detection device is infrared, the high-temperature objects in the environment can radiate infrared and interfere with the detection device. The infrared contained in the sunlight in the environment can also interfere with the detection device. In order to reduce the reception of the interfering electromagnetic signals that affect the detection results by the receiving unit group 2, the receiving unit group 2 can enter the receiving state in the first cycle synchronously with the transmitting unit group 1. That is, when the transmitting unit group 1 transmits the first electromagnetic signal, the receiving unit group 2 enters the receiving state, thereby receiving the second electromagnetic signal generated by the reflection of the first electromagnetic signal by the external object; when the transmitting unit group 1 stops transmitting the first electromagnetic signal, the receiving unit group 2 also stops the receiving state and stops receiving the electromagnetic signal, thereby avoiding the receiving unit group 2 from receiving too many interfering electromagnetic signals from the surrounding environment. This can reduce the reception of the interfering electromagnetic signal by the receiving unit group 2 as much as possible while maintaining the reception of the first electromagnetic signal, thereby improving the detection accuracy of the detection device.

[0045] For example, Figure 2 As shown, the transmitting unit group 1 can be Figure 2 The first electromagnetic signal is emitted outwardly in the G cycle, and the receiving unit group 2 can enter the receiving state in the G cycle synchronously with the transmitting unit group 1.

[0046] In a G cycle with 5 unit times, the transmitting unit group 1 can transmit the first electromagnetic signal within 4 unit times, and the receiving unit group 2 can synchronously enter the receiving state within 4 unit times to receive the second electromagnetic signal generated by the reflection of the first electromagnetic signal by an external object; the transmitting unit group 1 can stop transmitting the first electromagnetic signal within 1 unit time, and the receiving unit group 2 can synchronously terminate the receiving state within 1 unit time and stop receiving the electromagnetic signal, thereby avoiding the receiving unit group 2 from receiving too many interfering electromagnetic signals from the surrounding environment.

[0047] In one G cycle, the receiving unit group 2 keeps in sync with the transmitting unit group 1, so that while the detection device can maintain the ability to normally receive the first electromagnetic signal, the receiving unit group 2 receives the interference electromagnetic signal as much as possible, thereby improving the detection accuracy of the detection device.

[0048] Figure 3 The diagram is a schematic structural diagram of an electronic device according to an exemplary embodiment. Figure 4 The diagram is a schematic structural diagram of an electronic device according to an exemplary embodiment.

[0049] In some embodiments, Figure 1 , Figure 3 and Figure 4As shown, the transmitting unit group 1 may include transmitting units 11, each transmitting unit 11 may independently transmit a first electromagnetic signal. The receiving unit group 2 may include receiving units 21, each receiving unit 21 may independently receive a second electromagnetic signal.

[0050] The number of transmitting units 11 can be multiple. By providing multiple transmitting units 11, the detection requirements of the detection device can be met with multiple low-power transmitting units 11, thereby reducing the transmission power of a single transmitting unit 11. The lower-power transmitting unit 11 will have lower interference with other components.

[0051] Exemplarily, the emission unit 11 with lower power has a lower excitation effect on the luminescent material of the display screen, which can reduce the light spots formed after the luminescent material of the display screen is excited, thereby optimizing the display effect of the display screen.

[0052] Furthermore, by providing multiple transmitting units 11, the detection device can transmit the first electromagnetic signal multiple times at the same time, thereby completing multiple detections, thereby improving the detection accuracy of the detection device. Furthermore, by changing the transmission angle and position of the transmitting unit 11, the detection range of the detection unit can be increased or detection of a specific area can be achieved.

[0053] Exemplarily, a portion of the multiple transmitting units 11 may be disposed on the top of the electronic device, and another portion of the multiple transmitting units 11 may be disposed on the bottom of the electronic device, so that the detection device can detect both the upper and lower directions of the electronic device.

[0054] A plurality of transmitting units 11 may be arranged in a set manner.

[0055] like Figure 1 As shown, the setting method may include arranging a plurality of transmitting units 11 around the receiving unit 21. By arranging a plurality of transmitting units 11 around the receiving unit 21, the receiving unit 21 can receive an electromagnetic signal composed of electromagnetic signals emitted by a plurality of transmitting units 11, thereby reducing the power requirement of a single transmitting unit 11, so that a low-power transmitting unit 11 can also meet the electromagnetic signal strength of the detection device, thereby reducing the interference of the transmitting unit 11 to other components of the electronic device.

[0056] like Figure 3 As shown, the setting method may include arranging multiple receiving units 21 around the transmitting unit 11. By arranging multiple receiving units 21 around the transmitting unit 11, multiple receiving units 21 can receive electromagnetic signals emitted and reflected by the same transmitting unit 11, which can enable the detection device to correct the detection results by processing the reception results of multiple receiving units 21, thereby improving the detection accuracy of the detection device.

[0057] like Figure 4 As shown, the setting method may include arranging multiple transmitting units 11 and multiple receiving units 21 side by side. By arranging multiple transmitting units 11 and multiple receiving units 21 side by side, a single receiving unit 21 can receive an electromagnetic signal composed of electromagnetic signals emitted by multiple transmitting units 11, thereby reducing the power requirement of a single transmitting unit 11, so that a low-power transmitting unit 11 can also meet the electromagnetic signal strength of the detection device, thereby reducing the interference of the transmitting unit 11 to other components of the electronic device. And the detection device can correct the detection result by processing the reception results of multiple receiving units 21, thereby improving the detection accuracy of the detection device.

[0058] The present disclosure is not limited thereto, and the number and position of the transmitting units 11 and the number and position of the receiving units 21 in the setting mode can be changed according to the detection requirements of the detection device.

[0059] In some embodiments, Figure 1 , Figure 3 and Figure 4 As shown, the emitting unit 11 may have a reflecting area 12 .

[0060] The reflection area 12 may be an area that can be irradiated by the second electromagnetic signal when the first electromagnetic signal emitted by the transmitting unit 11 is reflected by an environmental object as a second electromagnetic signal and reflected back to the transmitting unit 11 .

[0061] Since the first electromagnetic signal may undergo diffuse reflection when reflected by environmental objects, the area that can be irradiated by the second electromagnetic signal may cover the transmitting unit 11 and the area around the transmitting unit 11 .

[0062] For example, Figure 1 , Figure 3 and Figure 4 As shown, the reflection area 12 may be a circular area centered on the transmitting unit 11 , and other components disposed in the reflection area 12 may receive the second electromagnetic signal.

[0063] The receiving unit group 2 may be disposed in the reflection area 12 . By disposing the receiving unit group 2 in the reflection area 12 , the receiving unit group 2 may receive the second electromagnetic signal reflected back to the detection device.

[0064] like Figure 1As shown, multiple transmitting units 11 can be arranged around the receiving unit 21, and the reflection area 12 of each transmitting unit 11 covers the receiving unit 21. By arranging the reflection area 12 of each transmitting unit 11 to cover the receiving unit 21, the receiving unit 21 can receive an electromagnetic signal composed of electromagnetic signals emitted by multiple transmitting units 11, thereby reducing the power requirement of a single transmitting unit 11, so that a low-power transmitting unit 11 can also meet the electromagnetic signal strength of the detection device, thereby reducing the interference of the transmitting unit 11 to other components of the electronic device.

[0065] like Figure 3 As shown, multiple receiving units 21 can be arranged around the transmitting unit 11, and each receiving unit 21 is arranged in the reflection area 12 of the transmitting unit 11. By arranging each receiving unit 21 in the reflection area 12 of the transmitting unit 11, multiple receiving units 21 can receive the electromagnetic signal emitted and reflected by the same transmitting unit 11, which can enable the detection device to correct the detection result by processing the reception results of multiple receiving units 21, thereby improving the detection accuracy of the detection device.

[0066] like Figure 4 As shown, the setting method may include arranging multiple transmitting units 11 and multiple receiving units 21 side by side, and the reflection area 12 of each transmitting unit 11 may cover at least two receiving units 21. By arranging multiple transmitting units 11 and multiple receiving units 21 side by side, a single receiving unit 21 can receive an electromagnetic signal composed of electromagnetic signals emitted by multiple transmitting units 11, thereby reducing the power requirement of a single transmitting unit 11, so that a low-power transmitting unit 11 can also meet the electromagnetic signal strength of the detection device, thereby reducing the interference of the transmitting unit 11 to other components of the electronic device. And the detection device can correct the detection result by processing the reception results of multiple receiving units 21, thereby improving the detection accuracy of the detection device.

[0067] In some embodiments, Figure 2 As shown, some of the plurality of transmitting units 11 may transmit the first electromagnetic signal to the outside in a second period, wherein the second period is different from the first period.

[0068] The first electromagnetic signal is emitted outwardly by the plurality of emission units 11 in the second period, so that the emission unit group 1 emits the first electromagnetic signal outwardly in the first period.

[0069] For example, Figure 2As shown, the transmitting unit group 1 may include four transmitting units 11, and the four transmitting units 11 transmit the first electromagnetic signal with G1 cycle, G2 cycle, G3 cycle and G4 cycle respectively. The G1 cycle, G2 cycle, G3 cycle and G4 cycle may be signal cycles with different initial phases and the same frequency. By making the four transmitting units 11 transmit the first electromagnetic signal with G1 cycle, G2 cycle, G3 cycle and G4 cycle respectively, period complementarity is achieved, so that the transmitting unit group 1 can transmit the first electromagnetic signal with G cycle.

[0070] Through the above method, the transmitting unit 11 of the transmitting unit group 1 can emit the first electromagnetic signal with a narrow pulse lower than the resolution of the human eye, so that the luminous material of the display screen excited by the first electromagnetic signal can flash at a frequency lower than the resolution of the human eye, thereby avoiding the human eye from recognizing the light spot, thereby improving the display effect of the display screen.

[0071] In some embodiments, other transmitting units 11 among the plurality of transmitting units 11 transmit the first electromagnetic signal to the outside in a second period, wherein the second period is the same as the first period.

[0072] For example, Figure 2 As shown, the transmitting unit 11 can transmit the first electromagnetic signal with a G period, so that the transmitting unit group 1 can transmit the first electromagnetic signal with a G period, and the G period can be configured so that the transmitting unit group 1 can transmit the first electromagnetic signal with a narrow pulse lower than the resolution of the human eye, so that the luminescent material of the display screen excited by the first electromagnetic signal can flash at a frequency lower than the resolution of the human eye, thereby avoiding the human eye from recognizing the light spot, thereby improving the display effect of the display screen.

[0073] The present disclosure is not limited to this. The transmission period of the multiple transmitting units 11 can be determined according to the design requirements of the transmitting unit group 1. For example, some of the multiple transmitting units 11 transmit the first electromagnetic signal outwardly with a period that is the same as the first period; other transmitting units 11 among the multiple transmitting units 11 transmit the first electromagnetic signal outwardly with a period that is different from the first period.

[0074] In some embodiments, the frequency of the first cycle can be less than or equal to 83 Hz, which is the lowest recognizable frequency of the human eye. Setting the frequency of the first cycle to less than or equal to 83 Hz can allow the luminescent material of the display screen excited by the first electromagnetic signal of the emission unit group 1 to flash at a frequency lower than the resolution of the human eye, thereby avoiding the human eye from recognizing the light spots, thereby improving the display effect of the display screen.

[0075] In some embodiments, when the multiple transmitting units 11 of the transmitting unit group 1 emit the first electromagnetic signal outward in a second period, the frequency of the second period can be less than or equal to 83 Hz, which is the lowest recognizable frequency of the human eye. By setting the frequency of the second period to be less than or equal to 83 Hz, the luminescent material of the display screen excited by the first electromagnetic signal emitted by the transmitting unit 11 can flash at a frequency lower than the resolution of the human eye, thereby avoiding the human eye from recognizing the light spots, thereby improving the display effect of the display screen.

[0076] In some embodiments, the first electromagnetic signal may be an infrared signal, and the second electromagnetic signal formed by the reflection of the first electromagnetic signal by an environmental object may also be an infrared signal.

[0077] Infrared signals have good directionality and non-diffusion when propagating, and their refractive index when passing through many media such as air is lower than that of other optical signals. This allows the infrared signal to more accurately complete the signal round trip between the transmitting unit 11 and the object being detected, so that the results of the detection device can more accurately reflect the distance between the detection device and the object being detected, thereby improving the accuracy of the detection results of the detection device.

[0078] Figure 5 is a circuit structure diagram of a detection device according to an exemplary embodiment.

[0079] In some embodiments, Figure 5 As shown, the detection device may include: a detection circuit, and the detection circuit may include a processing module 30. The detection circuit may be a circuit part of the detection device, and the processing module 30 may be used to control the on and off of the transmitting unit group 1 and the receiving unit group 2, and the processing module 30 may also process the signal data received by the receiving unit group 2.

[0080] The processing module 30 may include an input terminal and an output terminal.

[0081] The input end of the processing module 30 is electrically connected to the receiving unit group 2 , and the processing module 30 can receive a first signal from the receiving unit group 2 through the input end, wherein the first signal data can be a signal generated by converting a second electromagnetic signal received by the receiving unit group 2 .

[0082] The output end of the processing module 30 is electrically connected to the transmitting unit group 1 , and the processing module 30 can send a second signal to the transmitting unit group 1 through the output end, wherein the second signal can be a signal that causes the transmitting unit group 1 to transmit the first electromagnetic signal.

[0083] In addition, the processing module 30 can control the transmitting unit group 1 to transmit the first electromagnetic signal outward in the first cycle, and can also control the receiving unit group 2 to enter the receiving state in the first cycle, so that the time point when the transmitting unit group 1 transmits and the time point when the receiving unit group 2 enters the receiving state are synchronized, so that while the detection device can normally maintain the ability to receive the first electromagnetic signal, the receiving unit group 2 can minimize the reception of interference electromagnetic signals, thereby improving the detection accuracy of the detection device.

[0084] In some embodiments, Figure 5 As shown, the processing module 30 may include: an amplifier 31 , an analog-to-digital conversion unit 32 and a processing unit 33 .

[0085] The amplifier 31 can be electrically connected to the receiving unit group 2, and the amplifier 31 can amplify the second electromagnetic signal received by the receiving unit group 2, thereby strongly enhancing the characteristics of the second electromagnetic signal and improving the detection accuracy of the detection device.

[0086] The analog-to-digital conversion unit 32 may be electrically connected to the amplifier 31 , and the analog-to-digital conversion unit 32 may convert the second electromagnetic signal amplified by the amplifier 31 into a digital signal so as to be processed by the processing unit 33 .

[0087] One end of the processing unit 33 can be electrically connected to the analog-to-digital conversion unit 32, and receive the digital signal after the second electromagnetic signal is converted by the analog-to-digital conversion unit 32; the other end of the processing unit 33 can be electrically connected to the transmitting unit group 1, and control the transmitting unit group 1 to emit the first electromagnetic signal outward in the first cycle.

[0088] The processing unit 33 can record the time point when the transmitting unit group 1 transmits the first electromagnetic signal and the time point when the receiving unit group 2 receives the second electromagnetic signal. By comparing the time difference between the time point when the transmitting unit group 1 transmits the first electromagnetic signal and the time point when the receiving unit group 2 receives the second electromagnetic signal, the travel time of the electromagnetic signal can be known, and then according to the propagation speed of the electromagnetic signal in the corresponding medium, the distance between the detection device and the object to be measured can be calculated.

[0089] In some embodiments, the processing module 30 may include a bandpass filter, which is integrated in the processing unit 33 . The bandpass filter may be used to filter signal noise of the second electromagnetic signal received by the receiving unit group 2 .

[0090] When the electromagnetic signal used by the detection device is infrared, the infrared in the environment may interfere with the detection device. For example, a high-temperature object in the environment may radiate infrared and interfere with the detection device, and infrared contained in the sunlight in the environment may also interfere with the detection device. In order to reduce the impact of the interference electromagnetic signal received by the receiving unit group 2 on the detection result, the second electromagnetic signal received by the receiving unit group 2 may be filtered.

[0091] Since the second electromagnetic signal has a different frequency from other interfering electromagnetic signals naturally existing in the environment, filtering the second electromagnetic signal through a bandpass filter can reduce the background noise of the second electromagnetic signal and improve the signal-to-noise ratio, so that the electromagnetic signal received by the receiving unit group 2 is closer to the actual characteristic value of the second electromagnetic signal, thereby avoiding the detection device from misjudging due to interference signals in the environment and improving the accuracy of the detection device's results.

[0092] In some embodiments, a better integration effect can be obtained by increasing the time of the electronic shutter, that is, extending the sampling time of the second electromagnetic signal, thereby improving the accuracy of the result of the detection device.

[0093] In some embodiments, the receiving unit group 2 has a signal amplifying component 4, and the signal amplifying component 4 can be arranged between the receiving unit group 2 and the propagation path of the second electromagnetic signal.

[0094] The signal amplification component 4 can amplify or concentrate the second electromagnetic signal, so that the second electromagnetic signal received by the receiving unit group 2 has a stronger strength, which is beneficial for the detection device to identify the second electromagnetic signal, reduces the impact of the interfering electromagnetic signal on the detection device, improves the sensitivity of the detection device to the second electromagnetic signal, and improves the accuracy of the results of the detection device.

[0095] For example, Figure 5 As shown, the signal amplification component 4 may include a convex lens group. The second electromagnetic signal may be refracted and more concentrated when passing through the convex lens group, thereby enhancing the intensity of the second electromagnetic signal received by the receiving unit group 2, which is beneficial for the detection device to identify the second electromagnetic signal, reduces the impact of the interference electromagnetic signal on the detection device, improves the sensitivity of the detection device to the second electromagnetic signal, and improves the accuracy of the results of the detection device.

[0096] In other embodiments, the signal amplification component 4 may include a Fresnel lens, and the second electromagnetic signal may be refracted and more concentrated when passing through the Fresnel lens, thereby enhancing the intensity of the second electromagnetic signal received by the receiving unit group 2, which is beneficial for the detection device to identify the second electromagnetic signal, reduces the impact of the interference electromagnetic signal on the detection device, improves the sensitivity of the detection device to the second electromagnetic signal, and improves the accuracy of the results of the detection device.

[0097] Furthermore, the Fresnel lens can concentrate the second electromagnetic signal when the lens thickness is relatively thin, which helps to reduce the volume of the detection device and provide a larger installation space for the electronic equipment.

[0098] The present disclosure is not limited thereto, and the signal amplifying component 4 may also be a combination of a convex lens group and a Fresnel lens, or may be a signal gain amplifier.

[0099] Based on the same concept, an embodiment of the present disclosure also provides an electronic device.

[0100] The electronic device may be a laptop computer, a desktop computer, a mobile phone, a digital broadcast terminal, a message transceiver, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, a translator, and a wearable device such as a watch or a bracelet, and may be any electronic device with a speaker. In the following description, a mobile phone is used as an example, but the present disclosure is not limited thereto.

[0101] In some embodiments, Figure 1 , Figure 3 and Figure 4 As shown, the electronic device may include: a display screen 5 and a detection device. The detection device can measure the distance between the user and the electronic device.

[0102] For example, in a scenario where a user needs to use an electronic device to make a voice call, when the detection device detects that the user is close to the electronic device, the electronic device can determine that the user is using the receiver of the electronic device to make a voice call based on the detection result of the detection device. At this time, the speaker of the electronic device is turned off, the receiver is turned on, the display screen 5 is turned off, and the touch screen function is turned off to prevent the user from accidentally touching the screen when answering the voice;

[0103] When the detection device detects that the user is far away from the electronic device, the electronic device can determine, based on the detection result of the detection device, that the user is using the speaker of the electronic device for a voice call. At this time, the speaker of the electronic device is turned on, the earpiece is switched to speaker mode, and the display screen 5 remains lit so that the user can continue to operate the electronic device.

[0104] The detection device can be arranged below the display screen 5 or integrated inside the display screen 5 .

[0105] However, the present disclosure is not limited thereto, and the detection device may be disposed in other parts of the electronic device that require detection by the detection device.

[0106] The embodiment of the present disclosure is provided with a transmitting unit group 1 to transmit a first electromagnetic signal in a first period, and then a receiving unit group 2 is used to receive a second electromagnetic signal formed by reflection of the first electromagnetic signal, thereby reducing the radiation time of the electromagnetic signal of the detection device to other components, and reducing the interference of the detection device to other components at a relatively low cost.

[0107] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0108] It is further understood that the terms "second", "secondary", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other and do not indicate a specific order or degree of importance. In fact, the expressions "secondary", "secondary", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the second information may also be referred to as the second information, and similarly, the second information may also be referred to as the second information.

[0109] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0110] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0111] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0112] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following scope of rights.

[0113] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A detection device, characterized in that: The detection device comprises: A transmitting unit group, wherein the transmitting unit group transmits a first electromagnetic signal to the outside in a first period; and A receiving unit group, wherein the receiving unit group receives a second electromagnetic signal, where the second electromagnetic signal is an electromagnetic signal formed by reflection of the first electromagnetic signal.

2. The detection device according to claim 1, characterized in that: The receiving unit group and the transmitting unit group enter the receiving state synchronously with the first cycle, The receiving unit group in the receiving state receives the second electromagnetic signal.

3. The detection device according to claim 1, characterized in that: The transmitting unit group includes a transmitting unit, the receiving unit group includes a receiving unit, and the transmitting units are arranged in a setting manner, and the setting manner at least includes multiple transmitting units being arranged around the receiving unit, multiple receiving units being arranged around the transmitting unit, or multiple transmitting units and multiple receiving units being arranged side by side.

4. The detection device according to claim 3, characterized in that: The transmitting unit has a reflection area, which is an area around the transmitting unit where the first electromagnetic signal is scattered when being reflected back to the transmitting unit group. Wherein, the receiving unit group is located in the reflection area.

5. The detection device according to claim 3, characterized in that: Some of the plurality of transmitting units transmit the first electromagnetic signal outwardly in a second period, and the second period is different from the first period; and / or Other transmitting units among the plurality of transmitting units transmit the first electromagnetic signal to the outside in a second period, and the second period is the same as the first period.

6. The detection device according to claim 1, characterized in that: The frequency of the first cycle is less than or equal to 83 Hz.

7. The detection device according to claim 1, characterized in that: The first electromagnetic signal is an infrared signal, and the second electromagnetic signal is an infrared signal.

8. The detection device according to claim 2, characterized in that: The detection device comprises: A detection circuit, the detection circuit comprising a processing module, the processing module comprising an input end and an output end; The input end of the processing module is electrically connected to the receiving unit group, and the output end of the processing module is electrically connected to the transmitting unit group. The processing module controls the transmitting unit group to transmit the first electromagnetic signal outwardly in the first cycle, and the processing module controls the receiving unit group to enter the receiving state in the first cycle.

9. The detection device according to claim 8, characterized in that: The processing module comprises: an amplifier, the amplifier being electrically connected to the receiving unit group; an analog-to-digital conversion unit, the analog-to-digital conversion unit being electrically connected to the amplifier; A processing unit, one end of which is electrically connected to the analog-to-digital conversion unit, and the other end of which is electrically connected to the transmitting unit group.

10. The detection device according to claim 9, characterized in that: The processing module includes a bandpass filter, which is disposed in the processing unit and is used to filter signal noise generated when the receiving unit group receives the second electromagnetic signal.

11. The detection device according to claim 1, characterized in that: The receiving unit group has a signal amplifying component, and the signal amplifying component includes a convex lens group and / or a Fresnel lens.

12. An electronic device, characterized in that: include: Display screen; The detection device according to any one of claims 1 to 11, wherein the detection device is arranged below the display screen.

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