CN107450067B - A kind of distance detection device, method and mobile terminal - Google Patents
A kind of distance detection device, method and mobile terminal Download PDFInfo
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- CN107450067B CN107450067B CN201710632366.4A CN201710632366A CN107450067B CN 107450067 B CN107450067 B CN 107450067B CN 201710632366 A CN201710632366 A CN 201710632366A CN 107450067 B CN107450067 B CN 107450067B
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- signal
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- distance
- mobile terminal
- distance detection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Human Computer Interaction (AREA)
- Signal Processing (AREA)
- Geophysics And Detection Of Objects (AREA)
- Telephone Function (AREA)
Abstract
The present invention provides a kind of distance detection device, method and mobile terminals, wherein distance detection device includes: signal transmitting and power-sensing circuit and processor；Signal transmitting is electrically connected with power-sensing circuit with the antenna of mobile terminal, for to first signal of antenna transmission to launch outward radiofrequency signal by the antenna, the first performance number of the reflection signal of first signal is detected, and feeds back first performance number to processor；Processor emits with the signal to be electrically connected with power-sensing circuit, for when receiving the first performance number, first performance number corresponding first is obtained from predetermined power value and the corresponding relationship close to distance close to distance, condition is provided for the Proportionality design of higher screen and panel, promotes front panel overall structural strength and aesthetics.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of distance detection devices, method and mobile terminal.
Background technique
It is all type of touch screens that current most of mobile terminal, which is, for example, mobile phone,.User is in the mobile phone using the type
When can use and human body close to induction function.Such as make a phone call in communication process, by mobile phone screen close to oneself
When head or face, need to turn off mobile phone screen, to prevent the button on screen from contacting generation accidentally touch screen with head or face,
Lead to that undesirable button actions occur.
Current technology is used in the side that aperture and the progress ranging of built-in infrared sensor are carried out on Mobile telephone front panel
Method realizes this function, as shown in Figure 1.Aperture 1 in existing infrared distance measurement mode needs to occupy the space of front panel, and not
It can be blocked by the design structure of other in front panel, which has limited mobile terminal screen setting position on the front panel and set
Ratio is set, and carries out aperture on the front panel and will affect the integrality and aesthetics of mobile terminal front panel appearance, and influence to move
The overall structural strength of dynamic terminal front panel.
Summary of the invention
A kind of distance detection device, method and mobile terminal are provided in the embodiment of the present invention, it is red in the prior art to solve
Aperture in outer distance measuring method needs to occupy the space of front panel, limits the setting position of mobile terminal screen on the front panel
And Set scale, the problem of influencing overall structural strength and aesthetics.
In a first aspect, the embodiment of the present invention provides a kind of distance detection device, it is applied to mobile terminal, the distance detection
Device includes: signal transmitting and power-sensing circuit and processor；
The signal transmitting is electrically connected with power-sensing circuit with the antenna of the mobile terminal, for passing to the antenna
Defeated first signal detects the first power of the reflection signal of first signal to launch outward radiofrequency signal by the antenna
Value, and first performance number is fed back to the processor；
The processor emits with the signal to be electrically connected with power-sensing circuit, for receiving first power
When value, first performance number corresponding first is obtained from predetermined power value and the corresponding relationship close to distance close to distance.
Second aspect, the embodiment of the present invention also provide a kind of distance detection method, are applied to distance detection as described above
Device, the distance detection method include:
To mobile terminal the first signal of antenna transmission to launch outward radiofrequency signal by the antenna；
When receiving the reflection signal of first signal, the first performance number of the reflection signal is detected；
First function is obtained from predetermined power value with close in the corresponding relationship of distance according to first performance number
Rate is worth corresponding first close to distance.
The third aspect, the embodiment of the present invention also provide a kind of mobile terminal, comprising: distance detection device as described above.
One or more embodiments of the invention has the advantages that
Scheme disclosed in the embodiment of the present invention takes the sent to signal transmitting and power-sensing circuit to antenna
The power detection of the reflection signal of one signal, realizes the detection of the radiation variation generated to antenna by body effect, with final real
Now to the judgement of the degree of closeness of mobile terminal and human body, replaced by the new application mode of the antenna technology existing infrared
The mode of sensor instrument distance, realization will be removed in the prior art, realized close to inducing function in necessary front panel aperture
Meanwhile front panel integrity degree is promoted, it can be higher in mobile terminal design to more flexible in the design of screen proportion
The Proportionality design of screen and panel provides condition, promotes front panel overall structural strength and aesthetics.
Detailed description of the invention
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Fig. 1 shows the aperture schematic diagrames in infrared distance measurement mode in the prior art；
Fig. 2 indicates the overall structure figure of distance detection device in the embodiment of the present invention；
Fig. 3 indicates the detail structure diagram one of distance detection device in the embodiment of the present invention；
Fig. 4 indicates the detail structure diagram two of distance detection device in the embodiment of the present invention；
Fig. 5 indicates the flow chart of distance detection method in the embodiment of the present invention.
Appended drawing reference: wherein in figure: 1- aperture, 2- antenna.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
The embodiment of the present invention discloses a kind of distance detection device, is applied to mobile terminal, as shown in connection with fig. 2, the distance
Detection device includes: signal transmitting and power-sensing circuit 3 and processor 4；
The signal transmitting is electrically connected with power-sensing circuit 3 with the antenna 2 of the mobile terminal, is used for the antenna
2 the first signals of transmission detect the first of the reflection signal of first signal to launch outward radiofrequency signal by the antenna 2
Performance number, and first performance number is fed back to the processor 4.
The processor 4 emits with the signal to be electrically connected with power-sensing circuit 3, for receiving first power
When value, first performance number corresponding first is obtained from predetermined power value and the corresponding relationship close to distance close to distance.
As shown in connection with fig. 2, wherein signal transmitting is electrically connected with power-sensing circuit 3 with antenna 2, signal transmitting and power
Detection circuit 3 emits the first signal to antenna, so that the outside radiated radio frequency (RF) signal of antenna, to realize emission of radio frequency signals function,
Since antenna is arranged in the terminal, when mobile terminal and human body are close, antenna be easy to be influenced by human body close to distance and
Change radiation efficiency, human body is closer at a distance from antenna in mobile terminal, and influence of the human body for antenna radiation performance is bigger, leads
Antenna gain variation is caused, the radiation efficiency of antenna is lower, when antenna 2 is receiving signal transmitting and the of power-sensing circuit 3
When one signal, a part of signal energy of first signal is radiated by antenna 2, and a part of signal energy is reflected back toward
Come.
Signal transmitting is obtained with reflection signal of the power-sensing circuit 3 to reflected first signal, and is detected
The signal power of the reflection signal of first signal, feeds back to processor 4 for the signal power value, further to make processor 4
Matched according to the performance number of the reflection signal it is corresponding close to distance value, obtain between human body and mobile terminal close to distance.
The process takes the reflection signal of the first signal sent with power-sensing circuit 3 to antenna to signal transmitting
Power detection realizes the detection of the radiation variation generated to antenna by body effect, finally to realize to mobile terminal and human body
Degree of closeness judgement, the new application mode of the antenna technology come by way of replacing existing infrared sensor ranging,
Realize will in the prior art necessary to front panel aperture removal it is complete to promote front panel while realizing close to inducing function
Whole degree can be the ratio of higher screen and panel in mobile terminal design to more flexible in the design of screen proportion
Offer condition is provided, front panel overall structural strength and aesthetics are promoted.
As a preferred embodiment, wherein the processor 4 be also used to described first close to distance be less than it is default away from
When from threshold value, setting operation is triggered.
What processor 4 will acquire corresponding with the first performance number first is compared judgement close to distance, when this
When one close distance is less than pre-determined distance threshold value, shows that the distance between human body and mobile terminal antenna are close enough, locate at this time
Reason device 4 then carries out the triggering and application of corresponding scene, triggers the setting operation in mobile terminal, can guarantee original approach
While the function of induction, realizes and other function is triggered based on close induction.
If the setting operation is preferably that mobile terminal is in call mode, extinguish screen lamp.
As a preferred embodiment, wherein the antenna is coated on one end of setting signal radiation direction
Soft magnetic material.
In order to enhance the directionality of the antenna, one layer of soft magnetism material can be added in the one side contrary with aerial radiation
Material, which is, for example, ferrite.So that the radiation magnetic line of force of the antenna is towards desired orientation enhancement, and opposite side
To decrease, the near-field thermal radiation efficiency of the antenna is improved, while reducing the electromagnetic interference to other parts.
As a preferred embodiment, wherein signal transmitting is set to the master in mobile terminal with power-sensing circuit 3
On plate.Signal transmitting and power-sensing circuit 3 include: signal emission module 31, are electrically connected with the processor 4；Orient coupling
Clutch 32 is electrically connected with the antenna and the signal emission module 31 respectively.
The circuit structure realizes that whole signal transmitting is examined with power by signal emission module 31 and directional coupler 32
Brake, in conjunction with shown in Fig. 3, Fig. 4, wherein signal emission module 31 preferably comprise signal transmitter unit 311 and with the signal
The power amplifier 312 that transmitting unit 311 is electrically connected, power amplifier 312 are electrically connected with directional coupler 32, directional coupler
It is electrically connected between 32 and signal transmitter unit 311, signal transmitter unit 311 is connected to processor 4, when signal transmitting and power detection
When circuit 3 transmits the first signal to antenna 2, signal is issued to power amplifier 312, by power by signal transmitter unit 311
Corresponding signal is transferred to directional coupler 32 by amplifier 312, finally the directional coupler 32 transmitting the by connecting with antenna 2
One signal is to antenna, and when a part of first signal is gone out by aerial radiation, another part is reflected back, by orientation coupling
Clutch 32 obtains the reflected signal and detects its corresponding performance number, which is transmitted to signal transmitter unit
311, processor 4 is fed back to by signal transmitter unit 311, the transmitting of signal is realized and reflects the Feedback of Power process of signal, it is whole
Structure is simple and easy to implement for body.
Specifically, as shown in connection with fig. 4, which can receive to be original in mobile terminal for communication signal
The RF receiving and transmission module of hair original signal can receive on the basis of transmitting module in the terminal and realize that signal emits, former
There is transmitting module to carry out antenna switching plus duplexer 5, the signal emission module 31 connecting with processor 4 is gone back and duplexer
5 connections, duplexer 5 are connected with directional coupler 32 and other antennas, and signal emission module 31 is connected to by duplexer 5
Directional coupler 32, directional coupler 32 are external at the antenna 2 for realizing distance detection of setting, pass through duplexer 5
Realize the switching between the antenna 2 that the distance detects and other antennas matched with signal emission module 31；Likewise, the letter
The power amplifier that number transmitting module 31 preferably comprises signal transmitter unit 311 and is electrically connected with the signal transmitter unit 311
312, signal transmitter unit 311 is electrically connected with processor 4 and directional coupler 32, and power amplifier 312 and duplexer 5 connect
It connects, being electrically connected between directional coupler 32 is realized by duplexer 5, realize and utilize original signal transmitting dress in mobile terminal
It sets and carries out antenna switching to realize distance detection function, save cost, antenna is switched to distance detection function in duplexer 5
Antenna 2 after, the process apart from detection of progress can be found in aforementioned realization process, and details are not described herein.
Wherein, directional coupler 32 realizes the power detection and feedback of reflection signal, and directional coupler 32 can detect
When corresponding signal power, signal emission module 31 is fed back to, processor 4 is fed back to by signal emission module 31, when signal is sent out
When penetrating in module 31 comprising signal transmitter unit 311, then by directional coupler 32 when detecting corresponding signal power, feedback
To signal transmitter unit 311, processor 4 is finally fed back to by signal transmitter unit 311.
Accordingly, which is the antenna of transmitting/receiving wireless communication signal in mobile terminal；Or the antenna is mobile terminal
The antenna of the radiofrequency signal of middle transmitting range detection.
Wherein, which can be original antenna in mobile terminal, which is specially that original transmitting/receiving wireless is logical
The antenna for interrogating signal does not need to increase additional antenna pattern when the antenna is original antenna, and the overall distance is facilitated to detect
The setting of device in the terminal reduces the incrementss of component in mobile terminal, specifically, wherein not needing on antenna at this time
Coat soft magnetic material；The antenna is also possible to the newly-increased antenna in mobile terminal, which is for emitting with signal
Cooperate with power-sensing circuit 3 to emit the antenna of the radiofrequency signal for distance detection, which specifically can individually put
Be placed in the rear shell portion of mobile terminal and the top section of mobile terminal, can be enhanced the distance detection device detection accuracy and
Detection performance.
As a preferred embodiment, wherein the antenna, which is set on the mobile terminal, is provided with earpiece one end
End, with realize the human body in communication process close to detection.
Specifically, which is flexible printed circuit, which is pasted on the inside of mobile terminal rear shell, and leads to
It crosses elastic slice feeding point and is connected to signal transmitting and power-sensing circuit 3.
Alternatively, specifically, which is and to pass through elastic slice through laser direct forming on the inside of the mobile terminal rear shell
Feeding point is connected to signal transmitting and power-sensing circuit 3.By laser direct structuring technique by antenna in mobile terminal rear shell
Inside straight forming.
Above two antenna set-up mode can be specifically arranged as needed, and the mode for providing a variety of antenna settings is selected
It selects, meets the setting demand under different situations.
A kind of distance detection method is also disclosed in the embodiment of the present invention, is applied to distance detection device as described above, in conjunction with
Shown in Fig. 5, which includes:
Step 101: to mobile terminal the first signal of antenna transmission to launch outward radiofrequency signal by the antenna.
Emit the first signal to the antenna of mobile terminal, so that by the outside radiated radio frequency (RF) signal of antenna, to realize radio frequency
Signal transmission function, since antenna is arranged in the terminal, when mobile terminal and human body are close, antenna is easy close by human body
The influence of distance and change radiation efficiency, human body is closer at a distance from antenna in mobile terminal, and human body is for antenna radiation performance
Influence it is bigger, cause antenna gain to change, the radiation efficiency of antenna is lower, can according to the characteristic realize to following human body with
The detection of the indirect short distance of mobile terminal.
Step 102: in the reflection signal for receiving the first signal, detecting the first performance number of the reflection signal.
When antenna is when receiving signal transmitting and the first signal of power-sensing circuit, a part of first signal is believed
Number energy is radiated by antenna, and a part of signal energy is reflected back.At this point, to reflected first signal
Reflection signal is obtained, and detects the signal power of the reflection signal of first signal, with realize performance number with close to distance
Conversion matching between value.
Step 103: according to first performance number, from predetermined power value with close in the corresponding relationship of distance, obtain this
One performance number corresponding first is close to distance.
The performance number can be obtained with the corresponding relationship close to distance according to preparatory experiment determination, obtain the first performance number
Later, with further according to the performance number of the reflection signal match it is corresponding close to distance value, obtain between human body and mobile terminal
Close to distance.
The process, the power detection of the reflection signal for the first signal for taking opposite antenna to send, is realized to antenna by people
Body influences the detection of the radiation variation generated, finally to realize the judgement of the degree of closeness to mobile terminal and human body, by this
The new application mode of antenna technology replaces the mode of existing infrared sensor ranging, realization will in the prior art necessary to
Front panel aperture removal promotes front panel integrity degree while realizing close to inducing function, can be in mobile terminal design
To more flexible in the design of screen proportion, the Proportionality design for higher screen and panel provides condition.
Preferably, obtain first performance number corresponding first close to apart from the step of after, the distance detection side
Method further include: if described first is less than pre-determined distance threshold value close to distance, trigger setting operation.
Will acquire corresponding with the first performance number first is compared judgement close to distance, when this first close to away from
From be less than pre-determined distance threshold value when, show that the distance between human body and mobile terminal antenna are close enough, at this time processor then into
The triggering and application of the corresponding scene of row, trigger the setting operation in mobile terminal, can guarantee original function close to induction
While energy, realize based on close induction triggering other function.
As a preferred embodiment, if the setting operation is that mobile terminal is in call mode, extinguish mobile whole
The display screen at end.The implementation of the process can be for example when user converses, and human body head is being detected close to mobile terminal
When close enough to close distance, the screen lamp for controlling mobile terminal display screen extinguishes, and realizes above-mentioned in through this embodiment
Distance detection method realize detect between human body and mobile terminal close to apart from when, to the corresponding function in mobile terminal into
Row triggering is easy to implement human body close to the function triggering carried out.
A kind of mobile terminal is also disclosed in the embodiment of the present invention, comprising: distance detection device as described above.
The mobile terminal is not limited only to cell phone type handset products, can for it is any required detect mobile class equipment with
The equipment of degree of closeness between human body while realization close to inducing function, promotes front panel integrity degree, is easy to implement human body and leans on
The function triggering closely carried out.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, in embodiments of the present invention, relational terms such as first and second and the like are only
Only it is used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying these realities
There are any actual relationship or orders between body or operation.Moreover, the terms "include", "comprise" or its it is any its
He is intended to non-exclusive inclusion by variant, so that process, method, article or terminal including a series of elements are set
Standby includes not only those elements, but also including other elements that are not explicitly listed, or further includes for this process, side
Method, article or the intrinsic element of terminal device.In the absence of more restrictions, being limited by sentence "including a ..."
Fixed element, it is not excluded that including that there is also other identical in the process, method of the element, article or terminal device
Element.
Above-described is the preferred embodiment of the present invention, it should be pointed out that the ordinary person of the art is come
It says, can also make several improvements and retouch under the premise of not departing from principle of the present invention, these improvements and modifications also exist
In protection scope of the present invention.
Claims (10)
1. a kind of distance detection device is applied to mobile terminal, which is characterized in that the distance detection device includes: signal hair
It penetrates and power-sensing circuit and processor；
Signal transmitting is electrically connected with power-sensing circuit with the antenna of the mobile terminal, is used for the antenna transmission the
One signal detects the first performance number of the reflection signal of first signal to launch outward radiofrequency signal by the antenna,
And first performance number is fed back to the processor；
The processor emits with the signal to be electrically connected with power-sensing circuit, for receiving first performance number
When, first performance number corresponding first is obtained from predetermined power value and the corresponding relationship close to distance close to distance.
2. distance detection device according to claim 1, which is characterized in that
The processor is also used to trigger setting operation when described first is less than pre-determined distance threshold value close to distance.
3. distance detection device according to claim 1, which is characterized in that the antenna deviates from setting signal radiation direction
One end on be coated with soft magnetic material.
4. distance detection device according to claim 1, which is characterized in that the signal transmitting and power-sensing circuit packet
It includes:
Signal emission module is electrically connected with the processor；
Directional coupler is electrically connected with the antenna and the signal emission module respectively.
5. distance detection device according to claim 1, which is characterized in that the antenna is set on the mobile terminal
It is provided with the end of earpiece one end.
6. distance detection device according to claim 1, which is characterized in that the antenna is to receive and dispatch in the mobile terminal
The antenna of wireless communication signal；Or
The antenna is the antenna of the radiofrequency signal of transmitting range detection in the mobile terminal.
7. a kind of distance detection method, is applied to distance detection device as claimed in any one of claims 1 to 6, feature exists
In the distance detection method includes:
To mobile terminal the first signal of antenna transmission to launch outward radiofrequency signal by the antenna；
When receiving the reflection signal of first signal, the first performance number of the reflection signal is detected；
First performance number is obtained from predetermined power value with close in the corresponding relationship of distance according to first performance number
Corresponding first close to distance.
8. distance detection method according to claim 7, which is characterized in that acquisition first performance number is corresponding
First close to apart from the step of after, further includes:
If described first is less than pre-determined distance threshold value close to distance, setting operation is triggered.
9. distance detection method according to claim 8, which is characterized in that if the setting operation is that mobile terminal is in
Call mode then extinguishes the display screen of the mobile terminal.
10. a kind of mobile terminal characterized by comprising distance detection device as claimed in any one of claims 1 to 6.
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| CN201710632366.4A CN107450067B (en) | 2017-07-28 | 2017-07-28 | A kind of distance detection device, method and mobile terminal |
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| CN108540658A (en) * | 2018-03-28 | 2018-09-14 | 广东欧珀移动通信有限公司 | Control method of electronic device, device, storage medium and electronic equipment |
| CN108776331B (en) * | 2018-03-28 | 2020-06-02 | Oppo广东移动通信有限公司 | Proximity detection method, device, medium and electronic device applying the method |
| CN108693520B (en) * | 2018-03-28 | 2020-02-14 | Oppo广东移动通信有限公司 | Electronic device and approach detection method |
| CN108631887A (en) * | 2018-03-28 | 2018-10-09 | 广东欧珀移动通信有限公司 | Distance state judgment method, device, storage medium and electronic equipment |
| US10942264B2 (en) | 2018-10-08 | 2021-03-09 | Qualcomm Incorporated | Object position estimation |
| CN111555026B (en) * | 2020-05-25 | 2022-02-25 | 维沃移动通信有限公司 | Electronic equipment |
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| CN104601204A (en) * | 2014-12-25 | 2015-05-06 | 小米科技有限责任公司 | Method and device for detecting triggering condition |
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