CN109917807A - Control system and control method, the terminal of flight time component - Google Patents
Control system and control method, the terminal of flight time component Download PDFInfo
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- CN109917807A CN109917807A CN201910228726.3A CN201910228726A CN109917807A CN 109917807 A CN109917807 A CN 109917807A CN 201910228726 A CN201910228726 A CN 201910228726A CN 109917807 A CN109917807 A CN 109917807A
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Abstract
This application discloses a kind of control systems of flight time component.Flight time component includes laser light source.Control system includes driving circuit and detection circuit.Driving circuit is connect with laser light source, and for driving laser light source to emit laser according to a modulation system.Detection circuit connect with laser light source and is used to detect modulation system, in the first duration, when the duration that modulation system characterization laser light source is in effective working condition is greater than preset duration threshold value, or in the second duration, when the luminous energy that modulation system characterizes laser light source is greater than preset energy threshold, detection circuit issues closing control signal to close laser light source.Disclosed herein as well is a kind of terminal and the control methods of flight time component.
Description
Technical field
This application involves consumer electronics technical fields, more specifically, are related to a kind of control system of flight time component
System and control method, terminal.
Background technique
Depth acquisition device can be configured on mobile phone, a kind of depth acquisition device can use flight time (Time
OfFlight, TOF) technology obtains the depth of target object, and concrete mode is that control light source to target object emits laser, then is connect
The laser reflected by target object is received, by calculating time difference of the laser between mobile phone and target object back and forth to obtain target
The depth of object, and when the work of depth acquisition device is abnormal, laser may persistently launch outward laser, lasting to emit
Laser be easy to hurt user, the safety in utilization of depth acquisition device is lower.
Summary of the invention
The application embodiment provides the control system and control method, terminal of a kind of flight time component.
For the control system of the application embodiment for controlling flight time component, the flight time component includes laser
Light source, the control system include driving circuit and detection circuit；The driving circuit is connect with the laser light source, and is used for
The laser light source is driven to emit laser according to a modulation system；The detection circuit connect with the laser light source and is used to examine
Survey the modulation system, in the first duration, the modulation system characterize the laser light source be in effective working condition when
When length is greater than preset duration threshold value, or in the second duration, the modulation system characterizes the luminous energy of the laser light source
When greater than preset energy threshold, the detection circuit issues closing control signal to close the laser light source.
In some embodiments, the detection circuit is connect with the driving circuit, and the driving circuit receives institute
When stating closing control signal, the laser light source is closed.
In some embodiments, the control system further includes application processor, described in the application processor connection
Driving circuit and the detection circuit；
When the application processor receives the closing control signal, the application processor controls the driving circuit
Close the laser light source.
In some embodiments, the flight time component further includes sensor, and the sensor is for receiving by mesh
The laser of object reflection is marked, the control system further includes application processor and modulation module；The application processor connects institute
State detection circuit and the sensor；The modulation module is integrated on the sensor, and institute is stored in the modulation module
State modulation system；The driving circuit is connect to receive the modulation system with the sensor, and the application processor receives
When to the closing control signal, the closing control signal is sent the sensor, the biography by the application processor
Sensor controls the driving circuit according to the closing control signal and closes the laser light source.
In some embodiments, the control system further includes power module, the power module and the laser light
Source connects and is used to power to the laser light source, and the power module is also connect with the detection circuit, the power module
When receiving the closing control signal, disconnect to the power supply of the laser light source.
In some embodiments, the control system further includes application processor and signal generator；At the application
It manages device and connects the detection circuit；The signal generator is connect with the application processor；The application processor receives
When the closing control signal, the signal generator issues the prompt information of the flight time component exception.
In some embodiments, when the signal generator receives predetermined operation, the detection circuit stops issuing
The closing control signal and laser light source reopens；Or
After the detection circuit issues the closing control signal scheduled duration, the detection circuit stops issuing the pass
Control signal is closed, and the laser light source reopens.
In some embodiments, when the number that the laser light source is continuously closed is more than pre-determined number, the detection
Circuit continuously sends out the closing control signal.
The terminal of the application embodiment includes control system described in flight time component and any of the above-described embodiment,
The control system is connect with the flight time component.
For the control method of the application embodiment for controlling flight time component, the flight time component includes laser
Light source, the control method include that the laser light source is driven to emit laser according to a modulation system；It detects in the first duration,
The modulation system characterizes the laser light source and is in the duration of effective working condition whether be greater than preset duration threshold value, or
In second duration, whether the luminous energy that the modulation system characterizes the laser light source is greater than preset energy threshold；And if
It is to issue closing control signal to close the laser light source.
In the control system and control method, terminal of the flight time component of the application embodiment, modulated by detection
Mode, and in the first duration, the duration that modulation system characterization laser light source is in effective working condition is greater than preset duration
When threshold value, or in the second duration, when the luminous energy that modulation system characterizes laser light source is greater than preset energy threshold, judgement
Flight time component operation is abnormal, such as laser light source persistently emits the overlong time of laser, closes laser light source at this time, can keep away
Exempt to hurt user, the safety in utilization of flight time component is higher.
The additional aspect and advantage of presently filed embodiment will be set forth in part in the description, partially will be from following
Description in become obvious, or recognized by the practice of presently filed embodiment.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the application is from combining in description of the following accompanying drawings to embodiment by change
It obtains obviously and is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of the terminal of the application embodiment；
Fig. 2 is the flight time component of the application embodiment and the structural schematic diagram of control system；
Fig. 3 and Fig. 4 is the waveform diagram for the modulation system that the detection circuit of the application embodiment detects；
Fig. 5 is the module diagram of the control system of the application embodiment；
Fig. 6 is that the structure of the driving circuit of the application embodiment and signal move towards schematic diagram；
Fig. 7 is that the structure of the detection circuit of the application embodiment and signal move towards schematic diagram；
Fig. 8 to Figure 11 is the module diagram of the control system of the application embodiment；
Figure 12 is the structural schematic diagram of the terminal of the application embodiment；
Figure 13 is the flow diagram of the control method of the flight time component of the application embodiment.
Main element symbol description:
Terminal 100, flight time component 10, optical transmitting set 11, laser light source 111, diffuser 112, optical receiver 12, thoroughly
Mirror 121, sensor 122, substrate 13, control system 20, detection circuit 22, driving circuit 23, application processor 24, modulation module
25, power module 26, signal generator 27, shell 30, display screen 40.
Specific embodiment
Presently filed embodiment is described further below in conjunction with attached drawing.Same or similar label is from beginning in attached drawing
To the same or similar element of expression or element with the same or similar functions eventually.
In addition, the presently filed embodiment described with reference to the accompanying drawing is exemplary, it is only used for explaining the application's
Embodiment, and should not be understood as the limitation to the application.
In this application unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
Fig. 1 and Fig. 2 is please referred to, the terminal 100 of the application embodiment includes flight time component 10 and control system 20.
Terminal 100 can use control system 20 and control the depth information that flight time component 10 obtains target object, to utilize depth
Information carries out the operation such as ranging, modeling.Terminal 100 specifically can be mobile phone, tablet computer, remote controler, intelligent wearable device etc.,
Terminal 100 can also be the plug-in device being mounted on mobile platform (such as unmanned plane, automobile etc.).The embodiment of the present application is with end
100 are held to be illustrated for mobile phone, it will be understood that the concrete form of terminal 100 is not limited to mobile phone.In example as shown in Figure 1
In son, terminal 100 includes shell 30, and shell 30 can be used for installing flight time component 10 and control system 20.
Referring to Fig. 1, flight time component 10 may be mounted in shell 30, specifically, in one example, shell 30
On offer through-hole, flight time component 10 be mounted in shell 30 and and through-hole alignment, through-hole can be provided with shell 30
Positive (as shown in Figure 1a) or the back side (as shown in Figure 1 b)；In another example, flight time component 10 is mounted on shell 30
Interior and align display screens 40, that is, be arranged under display screen 40, flight time component 10 emit optical signal pass through display screen 40 into
Enter the external world, or extraneous optical signal passes through display screen 40 and received by flight time component 10.
Incorporated by reference to Fig. 2, flight time component 10 includes optical transmitting set 11 and optical receiver 12.Optical transmitting set 11 and light-receiving
Device 12 can be set on the same substrate 13.Optical transmitting set 11 includes laser light source 111 and diffuser 112, laser light source 111
It can be vertical cavity surface emitting laser (Vertical Cavity Surface Emitting Laser, VCSEL), laser light
Source 111 can be used for emitting infrared laser, and the wavelength of infrared laser can be 940 nanometers, and infrared laser can have uniform light
Spot pattern.Diffuser (diffuser) 112 is arranged in the optical path of infrared laser, the infrared laser warp that laser light source 111 emits
Diffuser 112 is spread, with more uniformly to emitting in free surrounding space.Meanwhile diffuser 112 be also possible to reflective portion it is infrared swash
Light.
Referring to Fig. 2, in the embodiment of the present application, when flight time component 10 works normally, laser light source 111 emits
Infrared laser be laser pulse (shown in T1 signal as shown in Figures 3 and 4), i.e., in high level laser light source 111 emit
Laser pulse, in low level, laser light source 111 does not emit laser pulse, hurts to avoid continuing outwardly to emit laser
User.
Optical receiver 12 includes lens 121 and sensor 122.Infrared laser reaches target after projecting in optical transmitting set 11
Object, under the reflex of target object, infrared laser is received back to optical receiver 12 and by optical receiver 12.Specifically
Ground, the infrared laser reflected are received after passing through lens 121 by sensor 122.Emitted by calculating laser light source 111 infrared sharp
Light and sensor 122 receive the time difference for the infrared laser being reflected back toward, and target object can be calculated relative to flight
The depth (that is, distance) of time component 10.
Fig. 2 and Fig. 5 is please referred to, control system 20 can be connect with flight time component 10, and control system 20 can be used for controlling
The transmitting of flight time component 10 processed and reception infrared laser.Control system 20 includes driving circuit 23 and detection circuit 22.
Driving circuit 23 is connect with laser light source 111, and driving circuit 23 is for driving laser light source 111 according to a modulation methods
Formula emits laser.Wherein, modulation system can be indicated with modulated signal, when flight time component 10 works normally, modulation
Mode is the corresponding modulation system of impulse wave, i.e., modulated signal is pulse signal (T2 signal as shown in Figures 3 and 4), the tune
Mode processed includes the section that characterization laser light source 111 is in effective working condition (i.e. laser light source 111 is emitting laser),
It is not in the section of effective working condition (i.e. laser light source 111 is not emitting laser) including characterization laser light source 111.
Incorporated by reference to Fig. 6, driving circuit 23 can obtain electric energy from external power supply by chip energization pins, be connect by communication
Mouth (such as SDIO pin, SCLK pin) is communicated with external module, passes through laser light source energization pins and laser light source power supply connects
It connects, signal pins is controlled by laser light source 111 and are connect with laser light source 111.Driving circuit 23 can be set on the substrate 13.
Fig. 5 to Fig. 7 is please referred to, detection circuit 22 is connect with laser light source 111, and detection circuit 22 is for detecting modulation methods
Formula.Detection circuit 22 can be encapsulated as detection chip or be integrated in remaining functional module of terminal 100.Specifically, it examines
The modulation system that slowdown monitoring circuit 22 detects is the modulation system that laser light source 111 uses, since laser light source 111 is according to the modulation
Mode emits laser, therefore, then can detecte the luminance of laser light source 111 by detecting modulation system.It is sharp detecting
When radiant 111 does not work normally, closing control signal is issued to close laser light source 111.
Specifically, incorporated by reference to Fig. 3, in one example, in the first duration a, modulation system is characterized at laser light source 111
When the duration of effective working condition is greater than preset duration threshold value, detection circuit 22 judges the abnormal work of flight time component 10
Make, and issues closing control signal to close laser light source 111.First duration and duration threshold value can be terminal 100 according to use
Family information or any duration of environmental factor setting are also possible to the personalized setting that user carries out according to demand for security, such as
First duration can be 10 milliseconds, duration threshold value is 8 milliseconds or the first duration can be for 100 nanoseconds, duration threshold value is 56 to receive
Second etc..Detection circuit 22 can detect the modulation system in the first duration a, when detecting the laser in the first duration a
Light source 111 is in effective working condition (shining) more than after duration threshold value, it is believed that in the first duration a, laser light source
111 luminous durations are too long, and infrared laser emits excessive energy to user, may damage to user, especially right
The eyes of user damage.
Incorporated by reference to Fig. 4, in another example, in the second duration b, modulation system characterizes shining for laser light source 111
When energy is greater than preset energy threshold, detection circuit 22 judges that flight time component 10 does not work normally, and issues closing control
Signal processed is to close laser light source 111.Second duration and energy threshold can be terminal 100 according to user information or environmental factor
Any duration being arranged is also possible to the personalized setting that user carries out according to demand for security.Detection circuit 22 can be to second
Modulation system in duration b is detected, when the luminous energy for detecting laser light source 111 in the second duration b is more than energy cut-off
When value, it is believed that in the second duration b, infrared laser emits excessive energy to user, may damage to user,
Especially the eyes of user are damaged.
It is appreciated that the first duration and the second duration may each be and set when terminal 100 is dispatched from the factory, it is also possible to user
According to setting, the specific value of user adjustable first duration and the second duration.
To sum up, in the terminal 100 of the application embodiment, detection circuit 22 passes through detection modulation system, and at first
In length, when the duration that modulation system characterization laser light source 111 is in effective working condition is greater than preset duration threshold value, or the
In two durations, when the luminous energy that modulation system characterizes laser light source 111 is greater than preset energy threshold, flight time group is judged
10 operation irregularity of part, such as laser light source 111 persistently emit the overlong time of laser, close laser light source 111 at this time, can avoid
User is hurt, the safety in utilization of flight time component 10 is higher.Meanwhile the control system 20 of the application passes through hardware side
Case, i.e., by detection circuit 22, come detect flight time component 10 whether operation irregularity, examined compared to by software scenario
For survey, avoids due to software crash etc. and cause to detect the case where failing, reliability is higher.
Referring to Fig. 3, in some embodiments, in the first duration, modulation system characterization laser light source 111, which is in, to be had
When imitating the consecutive hours length of working condition greater than preset duration threshold value, detection circuit 22 issues closing control signal to close laser
Light source 111.Specifically, it as shown in figure 3, in the modulation system T2 being in a first duration a, characterizes at laser light source 111
It is respectively t1 and t2 in the continuous duration of effective working condition, then compares whether t1 is greater than duration threshold value, and whether compare t2 big
In duration threshold value, when at least one in t1 and t2 is greater than duration threshold value, detection circuit 22 issues closing control signal.It is in one
In modulation system T3 in a duration a, characterization laser light source 111 is in a length of t3 of consecutive hours of effective working condition, then compares
Whether t3 is greater than duration threshold value, and when t3 is greater than duration threshold value, detection circuit 22 issues closing control signal.
Referring again to Fig. 3, in some embodiments, in the first duration, modulation system characterization laser light source 111 is in
When the total duration of effective working condition is greater than preset duration threshold value, detection circuit 22 issues closing control signal to close laser
Light source 111.Specifically, it as shown in figure 3, in the modulation system T2 being in a first duration a, characterizes at laser light source 111
It is t1+t2 in the total duration of effective working condition, then compares whether t1+t2 is greater than duration threshold value, when t1+t2 is greater than duration threshold value
When, detection circuit 22 issues closing control signal.It is in the modulation system T3 in a duration a, characterizes at laser light source 111
It is t3 in the total duration of effective working condition, then compares whether t3 is greater than duration threshold value, when t3 is greater than duration threshold value, detection electricity
Road 22 issues closing control signal.
Referring to Fig. 4, in some embodiments, integral of the amplitude of modulation system in the second duration is greater than preset
When integral threshold, the luminous energy that modulation system characterizes laser light source 111 is greater than preset energy threshold.Specifically, modulation methods
Integral of the amplitude of formula in the second duration can be indicated with area, as shown in figure 4, being in the tune in a second duration b
Integral of the amplitude of mode T2 processed in the second duration b can be indicated with the area S1 of dash area, then whether big compare S1
In integral threshold, when S1 is greater than integral threshold, detection circuit 22 issues closing control signal.It is in a second duration b
Integral of the amplitude in the second duration b of modulation system T3 can indicate that then comparing S2 is with the area S2 of dash area
No to be greater than integral threshold, when S2 is greater than integral threshold, detection circuit 22 issues closing control signal.It is in second duration
Integral of the amplitude of modulation system T4 in b in the second duration b can be indicated with the area S3 of dash area, then compare S3
Whether integral threshold is greater than, when S3 is greater than integral threshold, detection circuit 22 issues closing control signal.It is appreciated that causing
Integral be greater than integral threshold the case where may be since the amplitude in the second duration b is totally larger, or characterization laser light source
111 luminous durations are larger or amplitude and characterization laser light source 111 it is luminous duration it is larger.Particularly, when the second duration
B setting is enough to small, such as when being infinitely close to 0, at this point, integrated value of the amplitude of modulation system in the second duration b is should
Amplitude then compares the size relation of the amplitude and integral threshold, and when amplitude is greater than the integral threshold, modulation system characterizes laser
The luminous energy of light source 111 is greater than energy threshold.
Fig. 5 and Fig. 7 is please referred to, in some embodiments, detection circuit 22 is connect with driving circuit 23, driving circuit 23
When receiving closing control signal, laser light source 111 is closed.
Detection circuit 22 can send control output signal to driving circuit 23, and control output signal can be above-mentioned pass
Control signal is closed, when driving circuit 23 receives closing control signal, driving circuit 23 closes laser light source 111, makes laser
The stopping of light source 111 launches outward laser.In one example, the mode that driving circuit 23 closes laser light source 111 may is that drive
Dynamic circuit 23 drives laser light source 111 to emit laser according to the dark modulation system of length, wherein long dark modulation system refers to modulation letter
Number it is continuously in low level modulation system.
Fig. 7 and Fig. 8 is please referred to, in some embodiments, control system 20 further includes application processor 24
(Application Processor,AP).24 connection detection circuit 22 of application processor.Application processor 24 and driving circuit
23 connections.When application processor 24 receives closing control signal, application processor 24 controls driving circuit 23 and closes laser
Light source 111.
The system that application processor 24 can be used as terminal 100,24 connection detection circuit 22 of application processor, detection circuit
22 can work under the control of application processor 24, and application processor 24 can send enable signal (AP_ to detection circuit 22
EN signal), the control signal such as reset signal (AP_Rst signal).Meanwhile detection circuit 22 can be sent to application processor 24
Output signal is controlled, when controlling output signal is closing control signal, application processor 24 can pass through driving circuit 23
Communication interface is sent to driving circuit 23 closes control instruction, after control instruction is closed in the response of driving circuit 23, closes laser light
Source 111 makes the stopping of laser light source 111 launch outward laser.
Referring to Fig. 9, in some embodiments, control system 20 further includes application processor 24 and is integrated in sensor
Modulation module 25 on 122.24 connection detection circuit 22 of application processor and sensor 122.Tune is stored in modulation module 25
Mode processed.Driving circuit 23 is connect with sensor 122 to receive modulation system.Application processor 24 receives closing control signal
When, closing control signal is sent sensor 122 by application processor 24, and sensor 122 is controlled according to closing control signal and driven
Dynamic circuit 23 closes laser light source 111.
Modulation module 25 can send driving circuit 23 for the modulation system of storage, in the normal work of flight time component 10
When making, driving circuit 23 drives laser light source 111 to emit laser according to modulation system, and wherein modulation system may include laser light
Source 111 emits the information such as cycle information, power information of laser pulse, modulation system may include it is multiple, in different uses
Under scene, driving circuit 23 can drive laser light source 111 to emit laser according to different modulation systems.
When detection circuit 22 issues closing control signal, illustrate that laser light source 111 fails the modulation system according to safety
Emit laser, it may be possible to which 25 failure of modulation module or modulation system select mistake.Detection circuit 22 and application processor 24
Connection type can as shown in connection with fig. 7, and application processor 24, will when receiving the closing control signal of the sending of detection circuit 22
Closing control signal is sent to sensor 122；It is straight according to closing control signal after sensor 122 receives closing control signal
It connects control driving circuit 23 and closes laser, and no longer control driving circuit 23 and drive laser light source according to original modulation system
111, preferentially ensure that laser light source 111 is closed.
Referring to Fig. 10, in some embodiments, control system 20 further includes power module 26, power module 26 and is swashed
Radiant 111 connects and for powering to laser light source 111.Power module 26 is also connect with detection circuit 22, power module 26
When receiving closing control signal, disconnect to the power supply of laser light source 111.
Incorporated by reference to Fig. 7, detection circuit 22 can send control output signal to power module 26 at this time, when control output letter
When number being closing control signal, power module 26 disconnects power supply to laser light source 111 to reach the mesh for closing laser light source 111
's.Specifically, when flight time component 10 works normally, detection circuit 22 can send low level telecommunications to power module 26
Number, power module 26 is continuously the power supply of laser light source 111, and detection circuit 22 sends high level electric signal to power module 26 (can
It is regarded as closing control signal) when, power module 26 responds the high level electric signal, stops powering to laser light source 111, until inspection
Slowdown monitoring circuit 22 sends low level electric signal to power module 26 again, and power module 26 is powered to laser light source 111 again.
Figure 11 is please referred to, in some embodiments, control system 20 further includes application processor 24 and signal generator
27.24 connection detection circuit 22 of application processor.Signal generator 27 is connect with application processor 24.Application processor 24 receives
When to closing control signal, signal generator 27 issues the abnormal prompt information of flight time component 10.
User can know that flight time component 10 does not work normally by the prompt information that signal generator 27 issues, and
User may be hurt, user can take corresponding measure to avoid being injured in time, such as close terminal 100, change terminal 100
Towards to avoid being irradiated with a laser.Specifically, signal generator 27 can be light beam generator, in one example, such as scheme
Shown in 12, signal generator 27 can be display screen 40, and prompt information can be shown in the prompt information on display screen 40, example
Such as display reminding text, pattern, animation；Signal generator 27 can also be sound generator, in one example, signal hair
Raw device 27 can be loudspeaker etc., and prompt information can be the voice prompting of loudspeaker sending；Signal generator 27 can also be
Actuator, in one example, actuator can be vibration motor etc., and prompt information can be vibration motor with scheduled frequency
The shell 30 of drives terminal 100 shakes.
Figure 12 is please referred to, in one example, when signal generator 27 receives predetermined operation, detection circuit 22 stops hair
Closing control signal and laser light source 111 reopens out.For shown in Figure 12, display screen 40 can show that " click retries
The prompt information of (10S) ", user can click the prompt information and be considered as and connect after display screen 40 receives the clicking operation of user
Predetermined operation is received, detection circuit 22 stops issuing closing control signal at this time, and laser light source 111 is reopened.Certainly,
For different types of signal generator 27, different prompt informations, the type of predetermined operation may also can be different, do not make herein
Limitation.
Referring again to Figure 12, in another example, after detection circuit 22 issues closing control signal scheduled duration, detection
Circuit 22 stops issuing closing control signal, and laser light source 111 reopens.Specifically, scheduled duration can be 10 seconds, 7
Any durations such as second, 3 seconds, terminal 100 can restart software relevant to laser light source 111 in scheduled duration or carry out certainly
Inspection, laser light source 111 is opened after scheduled duration, to meet the use demand of user.
In some embodiments, when the number that laser light source 111 is continuously closed is more than pre-determined number, detection circuit 22
Continuously send out closing control signal.After laser light source 111 is closed and reopens, detection circuit 22 may still detect winged
Row time component 10 fails to work normally, and issues closing control signal again and laser light source 111 is again turned off.Work as laser
The number that light source 111 is continuously closed be more than pre-determined number when, illustrate flight time component 10 may have occurred hardware damage or
Person is difficult to the software fault repaired, and the needs of flight time component 10 are more fully detected or repaired ability normal use, because
This, in order to ensure user security, detection circuit 22 continuously sends out closing control signal at this moment, and laser light source 111 is avoided to be missed
It opens.
Incorporated by reference to Figure 13, the control method of the flight time component 10 of the application embodiment, control method comprising steps of
01: driving laser light source 111 emits laser according to a modulation system；
02: in the first duration, whether the duration that modulation system characterization laser light source is in effective working condition is big for detection
In preset duration threshold value, or in the second duration, it is preset whether the luminous energy of modulation system characterization laser light source is greater than
Energy threshold；And
03: if so, issuing closing control signal to close laser light source 111.
Wherein, step 01 can be implemented by the driving circuit 23 of above-mentioned 100 control system 20 of terminal, step 02 and 03 can be with
Implemented by the detection circuit 22 of controlling terminal 100.The specific implementation details of control method can be refering to above-mentioned to control system 20
Description, details are not described herein.
In the description of this specification, reference term " certain embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " means in conjunction with the embodiment
Or example particular features, structures, materials, or characteristics described are contained at least one embodiment or example of the application.
In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, description
Particular features, structures, materials, or characteristics can be in any one or more embodiments or example with suitable side
Formula combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one described feature.In the description of the present application, the meaning of " plurality " is at least two, such as two,
Three, unless otherwise specifically defined.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant, and scope of the present application is defined by the claims and their equivalents.
Claims (10)
1. a kind of control system of flight time component, which is characterized in that the flight time component includes laser light source, described
Control system includes:
Driving circuit, the driving circuit are connect with the laser light source, and for driving the laser light source according to a modulation
Mode emits laser；And
Detection circuit, the detection circuit connect with the laser light source and is used to detect the modulation system, in the first duration
It is interior, the modulation system characterize the laser light source be in effective working condition duration be greater than preset duration threshold value when, or
It is described when the luminous energy that the modulation system characterizes the laser light source is greater than preset energy threshold in the second duration
Detection circuit issues closing control signal to close the laser light source.
2. control system according to claim 1, which is characterized in that the detection circuit is connect with the driving circuit,
When the driving circuit receives the closing control signal, the laser light source is closed.
3. control system according to claim 1, which is characterized in that the control system further includes application processor, institute
It states application processor and connects the driving circuit and the detection circuit；
When the application processor receives the closing control signal, the application processor controls the driving circuit and closes
The laser light source.
4. control system according to claim 1, which is characterized in that the flight time component further includes sensor, institute
Sensor is stated for receiving the laser reflected by target object, the control system further include:
Application processor, the application processor connect the detection circuit and the sensor；And
The modulation module being integrated on the sensor is stored with the modulation system in the modulation module；
The driving circuit is connect to receive the modulation system with the sensor, and the application processor receives the pass
When closing control signal, the closing control signal is sent the sensor by the application processor, the sensor according to
The closing control signal controls the driving circuit and closes the laser light source.
5. control system according to claim 1, which is characterized in that the control system further includes power module, described
Power module connect with the laser light source and is used to power to the laser light source, and the power module is also electric with the detection
Road connection when the power module receives the closing control signal, is disconnected to the power supply of the laser light source.
6. control system according to claim 1, which is characterized in that the control system further include:
Application processor, the application processor connect the detection circuit；And
Signal generator, the signal generator are connect with the application processor；
When the application processor receives the closing control signal, the signal generator issues the flight time component
Abnormal prompt information.
7. control system according to claim 6, which is characterized in that when the signal generator receives predetermined operation,
The detection circuit stops issuing the closing control signal and the laser light source reopens；Or
After the detection circuit issues the closing control signal scheduled duration, the detection circuit stops issuing the closing control
Signal processed, and the laser light source reopens.
8. control system according to claim 7, which is characterized in that be more than in the number that the laser light source is continuously closed
When pre-determined number, the detection circuit continuously sends out the closing control signal.
9. a kind of terminal characterized by comprising
Flight time component；And
Control system described in claim 1 to 8 any one, the control system are connect with the flight time component.
10. a kind of control method of flight time component, which is characterized in that the flight time component includes laser light source, institute
Stating control method includes:
The laser light source is driven to emit laser according to a modulation system；
Detection in the first duration, the modulation system characterize the laser light source be in effective working condition duration it is whether big
In preset duration threshold value, or in the second duration, whether the luminous energy that the modulation system characterizes the laser light source is big
In preset energy threshold；And
If so, issuing closing control signal to close the laser light source.
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