CN108736312A - Control system, project structured light component and the electronic device of structured light projector - Google Patents
Control system, project structured light component and the electronic device of structured light projector Download PDFInfo
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- CN108736312A CN108736312A CN201810540383.XA CN201810540383A CN108736312A CN 108736312 A CN108736312 A CN 108736312A CN 201810540383 A CN201810540383 A CN 201810540383A CN 108736312 A CN108736312 A CN 108736312A
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- driving circuit
- structured light
- light projector
- application processor
- supervision timer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Semiconductor Lasers (AREA)
Abstract
The invention discloses a kind of control systems of structured light projector.Control system includes the first driving circuit, the second driving circuit and supervision timer.First driving circuit connect with structured light projector and is used for driving structure light projector projection laser.Second driving circuit connect with the first driving circuit and is used for the first drive circuitry.Supervision timer is connect with the first driving circuit and the second driving circuit, and supervision timer is for receiving prearranged signals.Supervision timer is for when not receiving prearranged signals in scheduled duration, closing the first driving circuit and the second driving circuit with closing structure light projector.The invention also discloses the control methods of a kind of project structured light component, electronic device and structured light projector.When supervision timer does not receive prearranged signals in scheduled duration, supervision timer closes the first driving circuit and the second driving circuit with closing structure light projector, prevents structured light projector from continuing to emit laser outward and hurt user.
Description
Technical field
The present invention relates to consumer electronics technical fields, more specifically, are related to a kind of control system of structured light projector
The control method of system, project structured light component, electronic device and structured light projector.
Background technology
Laser generator can be configured on mobile phone, laser generator for emitting laser outward, however, being when mobile phone
When system breaks down and crashes, laser generator may continue to emit laser for a long time outward, and the laser emitted for a long time
It is easy to hurt the eyes of user, especially user.
Invention content
Embodiment of the present invention provides a kind of control system of structured light projector, project structured light component, electronic device
With the control method of structured light projector.
The control system of the structured light projector of embodiment of the present invention includes：
First driving circuit, first driving circuit connect with the structured light projector and are used to drive the structure
Light projector projects laser；
Second driving circuit, second driving circuit connect with first driving circuit and are used to drive to described first
Dynamic circuit power supply；With
Supervision timer, the supervision timer are connect with first driving circuit and second driving circuit, institute
Supervision timer is stated for receiving prearranged signals, and the supervision timer is described predetermined for not received in scheduled duration
When signal, first driving circuit and second driving circuit are closed to close the structured light projector.
In some embodiments, the control system further includes application processor, the application processor and described the
One drive circuit, the application processor and the supervision timer are all connected with, and the application processor is used for the monitoring
Timer sends the prearranged signals.
In some embodiments, the supervision timer is additionally operable in scheduled duration not receive the prearranged signals
When, send out the reset signal for restarting the application processor.
In some embodiments, the supervision timer be integrated in the application processor or the monitoring timing
Device is connected to outside the application processor.
In some embodiments, the scheduled duration is [50,150] millisecond.
The project structured light component of embodiment of the present invention includes：
Structured light projector；With
Control system described in any of the above-described embodiment, the structured light projector connect with first driving circuit
It connects.
The electronic device of embodiment of the present invention includes：
Structured light projector；With
Control system described in any of the above-described embodiment, first driving circuit connect with the structured light projector
It connects.
In some embodiments, the structured light projector can project laser, the electronic device to target object
Further include：
Infrared camera, the infrared camera can be received by the modulated laser pattern of the target object；With
Microprocessor, the microprocessor and the infrared camera, the microprocessor and first driving circuit
It is all connected with, the microprocessor is for handling the laser pattern to obtain depth image.
In some embodiments, the application processor is formed with credible performing environment, the microprocessor with it is described
Application processor connects and is used to the depth image being transferred in the credible performing environment.
Embodiment of the present invention also provides a kind of control method of structured light projector, the structured light projector and first
Driving circuit connects, and first driving circuit is also connect with the second driving circuit, and first driving circuit is for driving institute
Structured light projector projection laser is stated, second driving circuit is used for first drive circuitry, the controlling party
Method includes：
Drive the structured light projector projection laser；
Receive prearranged signals；With
When not receiving the prearranged signals in scheduled duration, first driving circuit and second driving are closed
Circuit is to close the structured light projector.
The control method of the structured light projector of embodiment of the present invention, the control system of structured light projector, structure light
It projects in component and electronic device, if not receiving prearranged signals in scheduled duration, judges that the system of electronic device occurs
Failure, and the first driving circuit and the second driving circuit are closed with closing structure light projector, prevent structured light projector from continuing
Emit laser outward and hurts user.
The additional aspect and advantage of embodiments of the present invention will be set forth in part in the description, partly will be from following
Description in become apparent, or the practice of embodiment through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention is from combining in description of the following accompanying drawings to embodiment by change
It obtains obviously and is readily appreciated that, wherein：
Fig. 1 is the structural schematic diagram of the electronic device of embodiment of the present invention；
Fig. 2 is the module diagram of the electronic device of embodiment of the present invention；
Fig. 3 is the flow diagram of the control method of the structured light projector of embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the project structured light component of embodiment of the present invention；
Fig. 5 to Fig. 7 is the part-structure schematic diagram of the structured light projector of embodiment of the present invention.
Specific implementation mode
Embodiments of the present invention are 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 embodiments of the present invention described below in conjunction with the accompanying drawings are exemplary, it is only used for explaining the present invention's
Embodiment, and be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct 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
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
It please refers to Fig.1 and Fig. 2, the electronic device 100 of embodiment of the present invention includes structured light projector 10, infrared photography
First 20, control system 30 and microprocessor 40.Electronic device 100 can be mobile phone, tablet computer, smartwatch, Intelligent bracelet,
Intelligent wearable device etc. illustrates, it will be understood that electronics so that electronic device 100 is mobile phone as an example in embodiments of the present invention
The concrete form of device 100 is not limited to mobile phone.
Structured light projector 10 can project laser to target object, and laser can be infrared light, while project structured light
The laser that device 10 projects can be with patterns such as specific speckle or stripeds.Infrared camera 20 can acquire target object
Infrared image, or receive by the modulated laser pattern of target object.In order to obtain more clearly laser pattern, usually
It needs with certain luminous power to the continuous transmitting multi-frame laser of target object, if however, structured light projector 10 continues outward
Emit laser, then laser may burn user, be particularly susceptible the eyes of harm users, it is therefore desirable to avoid structured light projector 10
Continue to emit laser outward.
Control system 30 includes the first driving circuit 31, the second driving circuit 32, application processor (Application
Processor) 33 and supervision timer 34.
First driving circuit 31 is connect with structured light projector 10, and the first driving circuit 31 can be used for driving structure light projection
Device 10 projects laser, specifically current source of first driving circuit 31 as structured light projector 10.Second driving circuit 32 with
First driving circuit 31 connects, and the second driving circuit 32 can be used for powering to the first driving circuit 31, such as the first driving circuit
31 can be DC/DC circuits.It is appreciated that if the first driving circuit 31 is closed, structured light projector 10 can be closed,
Structured light projector 10 can not emit laser outward；If the second driving circuit 32 is closed, the first driving circuit 31 and knot
Structure light projector 10 can be closed, and structured light projector 10 can not emit laser outward.First driving circuit 31 can be independent
It is packaged into driving chip, the second driving circuit 32 can also be individually encapsulated into driving chip, can also be the first driving circuit 31
It is mutually encapsulated into a driving chip with the second driving circuit 32, and driving chip can be arranged in structured light projector 10
Substrate or circuit board on.
Application processor 33 can be with the first driving circuit as the system of electronic device 100, application processor 33
31 connections, application processor 33 can also be connect with infrared camera 20.Application processor 33 can also be with electronic device 100
Multiple electronic components connect and control multiple electronic component and run in predetermined patterns, such as control electronic device
100 display screen shows scheduled picture, controls the antenna transmission of electronic device 100 or receives scheduled data, control electronics
The visible image capturing head 50 of device 100 obtains coloured image and handles the coloured image, the power supply that controls infrared camera 20
It opens and closes, close (pwdn) infrared camera 20 or resetting (reset) infrared camera 20 etc..
Application processor 33 can also be used to control the work of the first driving circuit 31 and project with driving structure light projector 10 to swash
Light, it will be understood that in 33 operation troubles of application processor, such as when 33 delay machine of application processor, the first driving circuit 31 can
The state of laser can be emitted just at lasting driving structure light projector 10, and continue the laser emitted outward with higher
It is dangerous.Therefore, it is necessary to monitor the operating status of application processor 33, and in 33 operation troubles of application processor, close in time
Structured light projector 10 is closed, it in embodiments of the present invention, can be by closing the first driving circuit 31 and the second driving circuit 32
With closing structure light projector 10.
In order to keep the operating status of application processor 33 monitored, application processor 33 can be introversive at preset time intervals
Supervision timer 34 sends prearranged signals, such as sends reset signal to supervision timer 34 every 50 milliseconds, works as application processor
When 33 operation troubles, application processor 33 can not run the program that prearranged signals is sent to supervision timer 34, therefore can not send out
It send prearranged signals and the malfunction of application processor 33 is made to be detected.
Please continue to refer to Fig. 1 and Fig. 2, supervision timer 34 is connect with the first driving circuit 31 and the second driving circuit 32,
Supervision timer 34 is connect with application processor 33, and supervision timer 34 in scheduled duration for not receiving prearranged signals
When, the first driving circuit 31 and the second driving circuit 32 are closed with closing structure light projector 10.In this way, even if the first driving electricity
One among road 31 and the second driving circuit 32 when breaking down and can not directly be closed, supervision timer 34 closes first
Driving circuit 31 and the second driving circuit 32 also can guarantee and at least close among the first driving circuit 31 and the second driving circuit 32
One not broken down so that structured light projector 10 can be smoothly closed.Wherein scheduled duration can be electronics dress
It sets 100 to set in manufacture, can also carry out self-defined setting on electronic device 100 according to user.
Specifically, in the embodiment of the present invention, the concrete form of supervision timer 34 can be counter, supervision timer 34
After receiving prearranged signals, supervision timer 34 since one number with certain speed count down.If at application
It manages device 33 to work normally, before counting down to 0, application processor 33 can retransmit prearranged signals, and supervision timer 34 receives
To count down reset after to prearranged signals；If 33 irregular working of application processor, when supervision timer 34 count down to 0, prison
It is considered as depending on timer 34 and judges 33 operation troubles of application processor, supervision timer 34 sends out signal-off first and drives electricity at this time
Road 31 and the second driving circuit 32 are so that structured light projector 10 is closed.
In one example, supervision timer 34 can be arranged outside application processor 33, and supervision timer 34 can be
One plug-in timer chip, supervision timer 34 can be connected with an I/O pin of application processor 33 and be received
The prearranged signals that application processor 33 is sent out.The reliability that plug-in supervision timer 34 works is higher.In another example,
Supervision timer 34 can be integrated in application processor 33, and the function of supervision timer 34 can be by application processor 33
Portion's timer realization, so can be with the hardware circuit design of simplified control system 30.
Microprocessor 40 can be processing chip, and microprocessor 40 drives with application processor 33, microprocessor 40 and first
Dynamic circuit 31, microprocessor 40 are all connected with infrared camera 20.
Microprocessor 40 is connect with application processor 33 so that application processor 33 can reset microprocessor 40, wake up
(wake) microprocessor 40, error correction (debug) microprocessor 40 etc., microprocessor 40 can pass through mobile industry processor interface
(Mobile Industry Processor Interface, MIPI) 41 is connect with application processor 33, specifically, microprocessor
Credible performing environment (the Trusted Execution that device 40 passes through mobile industry processor interface 41 and application processor 33
Environment, TEE) 331 connections, the data in microprocessor 40 are transmitted directly in credible performing environment 331.Its
In, code and region of memory in credible performing environment 331 are controlled by access control unit, cannot be executed by untrusted
Program in environment (Rich Execution Environment, REE) 332 is accessed, credible performing environment 331 and untrusted
Performing environment 332 can be formed in application processor 33.
Microprocessor 40 can pass through pulse width modulation interface (Pulse Width Modulation, PWM) 42 and
One drive circuit 31 connects, and microprocessor 40 can pass through integrated circuit (Inter-Integrated with infrared camera 20
Circuit, I2C) connection of bus 70, microprocessor 40 can be to the offer of infrared camera 20 acquisition infrared image and laser pattern
Clock information, infrared camera 20 acquire infrared image and laser pattern can be passed by mobile industry processor interface 41
It is defeated in microprocessor 40.
In one embodiment, the infrared template and depth for verifying identity can be stored in credible performing environment 331
Template is spent, infrared template can be the face infrared image that user pre-enters, and depth template can be that user pre-enters
Face depth image.Infrared template is stored in depth template in credible performing environment 331, it is not easy to and it is tampered and usurps, electricity
The safety of information in sub-device 100 is higher.
When user needs to verify identity, microprocessor 40 controls the infrared image that infrared camera 20 acquires user, and
It is transmitted in the credible performing environment 331 of application processor 33 after obtaining the infrared image, application processor 33 is in credible execution
The infrared image is compared with infrared template in environment 331, if the two matches, infrared template is exported and is verified
Verification result.Compare whether it is matched during, infrared image and infrared template will not obtain by other programs, distort or
It usurps, improves the information security of electronic device 100.
Further, microprocessor 40 can control 31 driving structure light projector 10 of the first driving circuit and project outward and swash
Light, and control infrared camera 20 and acquire the laser pattern modulated by target object, microprocessor 40 obtains and handles the laser
Pattern is to obtain depth image.The depth image is transmitted to the credible performing environment 331 of application processor 33 by microprocessor 10
In, the depth image is compared with depth template in credible performing environment 331 for application processor 33, if the two phase
Match, then exports the verification result that depth template is verified.During whether comparison is matched, depth image and depth template
It will not be obtained, distort or be usurped by other programs, improve the information security of electronic device 100.
To sum up, in the electronic device 100 of embodiment of the present invention, supervision timer 34 does not receive pre- in scheduled duration
When determining signal, then judge that 33 operation troubles of application processor, supervision timer 34 close the driving of the first driving circuit 31 and second
Circuit 32 prevents structured light projector 10 from continuing to emit laser outward and hurt user with closing structure light projector 10.
Referring to Fig. 2, in some embodiments, supervision timer 34 is additionally operable in scheduled duration not receive predetermined
When signal, the reset signal for restarting application processor 33 is sent out.It has been observed that when supervision timer 34 in scheduled duration not
When receiving prearranged signals, application processor 33 has occurred and that failure, at this point, supervision timer 34 sends out reset signal so as to answer
It is resetted and is worked normally with processor 33.
Specifically, in one example, reset signal can be received directly by application processor 33, and reset signal is being applied
Possess higher rank in the execution program of processor 33, application processor 33 preferentially can generate response to reset signal and go forward side by side
Row resets.In another example, reset signal is also sent on the outer reset chip hung on application processor 33, multiple
Mandatory use processor 33 is resetted after the chip response reset signal of position.
In some embodiments, scheduled duration is [50,150] millisecond.Specifically, scheduled duration could be provided as 50 millis
Second, 62 milliseconds, 75 milliseconds, 97 milliseconds, 125 milliseconds, 150 milliseconds etc. and the duration arbitrarily in above-mentioned section.It is appreciated that such as
Fruit scheduled duration is arranged too short, then application processor 33 is required excessively continually to send prearranged signals, can occupy using processing
The excessive processing space of device 33 and cause electronic device 100 operation be easy to happen interim card.If scheduled duration setting is long,
The failure of application processor 33 cannot be detected in time, that is, cannot in time be closed structured light projector 10, no
Conducive to safe handling structured light projector 10.It sets scheduled duration to [50,150] millisecond, can preferably take into account electronics dress
Set 100 fluency and safety.
Incorporated by reference to Fig. 3, embodiment of the present invention also provides a kind of control method of structured light projector 10, project structured light
Device 10 is connect with the first driving circuit 31, and the first driving circuit 31 is also connect with the second driving circuit 32, the first driving circuit 31
Laser is projected for driving structure light projector 10, the second driving circuit 32 is used to power to the first driving circuit 31, controlling party
Method includes step：
01：Driving structure light projector 10 projects laser；
02：Receive prearranged signals；With
03：When not receiving prearranged signals in scheduled duration, the first driving circuit 31 and the second driving circuit 32 are closed
With closing structure light projector 10.
In the control method of the structured light projector 10 of embodiment of the present invention, if not received in scheduled duration predetermined
Signal then judges the system jam of electronic device 100, and closes the first driving circuit 31 and the second driving circuit 32 to close
Structured light projector 10 is closed, prevents structured light projector 10 from continuing to emit laser outward and hurt user.The reality of control method
The above-mentioned specific descriptions to electronic device 100 can be referred to by applying details, and details are not described herein.
Embodiment of the present invention also provides a kind of project structured light component 60 (shown in Fig. 4), and project structured light component 60 wraps
Include structured light projector 10, the first driving circuit 31, the second driving circuit 32 and supervision timer 34.At this point, the first driving electricity
Road 31, the second driving circuit 32 and supervision timer 34 are desirably integrated on the board unit 11 of structured light projector 10.
Referring to Fig. 4, in some embodiments, structured light projector 10 includes board unit 11, lens barrel 12, light source
13, collimating element 14, diffraction optical element (diffractive optical elements, DOE) 15 and protection cap 16.
Board unit 11 includes substrate 111 and circuit board 112.Circuit board 112 is arranged on substrate 111, and circuit board 112 is used
In the mainboard of connection light source 13 and electronic device 100, circuit board 112 can be hardboard, soft board or Rigid Flex.In such as Fig. 4
Shown in embodiment, offer through-hole 1121 on circuit board 112, light source 13 be fixed on substrate 111 and with 112 electricity of circuit board
Connection.Heat emission hole 1111 can be offered on substrate 111, the heat that light source 13 or the work of circuit board 112 generate can be by radiating
Hole 1111 sheds, and heat-conducting glue can also be filled in heat emission hole 1111, to further increase the heat dissipation performance of board unit 11.
Lens barrel 12 is fixedly connected with board unit 11, and lens barrel 12 is formed with host cavity 121, lens barrel 12 include roof 122 and
The peripheral wall 124 of the annular extended from roof 122, peripheral wall 124 are arranged on board unit 11, and roof 122 offers and host cavity
The light hole 1212 of 121 connections.Peripheral wall 124 can be connect with circuit board 112 by viscose glue.
Protection cap 16 is arranged on roof 122.Protection cap 16 includes offering baffle 162 and the self catcher of light extraction through-hole 160
The annular sidewall 164 that plate 162 extends.
Light source 13 is arranged at collimating element 14 in host cavity 121, and diffraction optical element 15 is mounted on lens barrel 12, accurate
Straight element 14 is successively set on diffraction optical element 15 in the luminous light path of light source 13.Collimating element 14 sends out light source 13
Laser is collimated, and laser is then passed through diffraction optical element 15 to form laser pattern after passing through collimating element 14.
Light source 13 can be vertical cavity surface emitting laser (Vertical Cavity Surface Emitting
Laser, VCSEL) or edge-emitting laser (edge-emitting laser, EEL), in the embodiment as shown in fig.4,
Light source 13 is edge-emitting laser, and specifically, light source 13 can be distributed feedback laser (Distributed Feedback
Laser, DFB).Light source 13 into host cavity 121 for emitting laser.Incorporated by reference to Fig. 5, light source 13 is whole to be in the form of a column, light source 13
An end face far from board unit 11 forms light-emitting surface 131, and laser is sent out from light-emitting surface 131, and light-emitting surface 131 is first towards collimation
Part 14.Light source 13 is fixed on board unit 11, and specifically, light source 13 can be bonded in by sealing 17 on board unit 11,
Such as the opposite with light-emitting surface 131 of light source 13 is bonded on one side on board unit 11.Incorporated by reference to Fig. 4 and Fig. 6, the side of light source 13
Face 132 can also be bonded on board unit 11, and sealing 17 wraps the side 132 of surrounding, can also only bond side 132
Some face and board unit 11 or certain several face of bonding and board unit 11.Sealing at this time 17 can be heat-conducting glue, by light
The heat that the work of source 13 generates is conducted into board unit 11.
Referring to Fig. 4, diffraction optical element 15 is carried on roof 122 and is housed in protection cap 16.Diffraction optics member
The opposite both sides of part 15 are contradicted with protection cap 16 and roof 122 respectively, and baffle 162 includes the resistance surface close to light hole 1212
1622, diffraction optical element 15 is contradicted with resistance surface 1622.
Specifically, diffraction optical element 15 includes opposite the diffraction plane of incidence 152 and diffraction exit facet 154.Diffraction optics
Element 15 is carried on roof 122, the surface (resistance surface of diffraction exit facet 154 and the close light hole 1212 of baffle 162
1622) it contradicts, the diffraction plane of incidence 152 is contradicted with roof 122.Light hole 1212 is aligned with host cavity 121, light extraction through-hole 160 with
Light hole 1212 is aligned.Roof 122, annular sidewall 164 and baffle 162 are contradicted with diffraction optical element 15, to prevent diffraction
Optical element 15 falls off along light direction out of protection cap 16.In some embodiments, protection cap 16 is pasted onto by glue
On roof 122.
The light source 13 of above-mentioned structured light projector 10 use edge-emitting laser, one side edge-emitting laser compared with
The temperature drift of VCSEL array is smaller, on the other hand, since edge-emitting laser is single-point light emitting structure, is not necessarily to array of designs structure,
It makes simply, the cost of light source of structured light projector 10 is relatively low.
The laser of distributed feedback laser obtains the gain of power by the feedback of optical grating construction when propagating.It carries
The power of high distributed feedback laser is needed by increasing Injection Current and/or increasing the length of distributed feedback laser,
Since increase Injection Current can make the power consumption of distributed feedback laser increase and serious problem of generating heat occurs,
In order to ensure that distributed feedback laser can work normally, the length for increasing distributed feedback laser is needed, causes to be distributed
Feedback laser is generally in elongate strip structure.When the light-emitting surface 131 of edge-emitting laser is towards collimating element 14, edge emitting
Laser is placed in vertical, since edge-emitting laser is in elongate strip structure, edge-emitting laser be susceptible to fall, shift or
Shaking etc. is unexpected, therefore can be fixed edge-emitting laser by the way that sealing 17 is arranged, and prevents edge-emitting laser from falling
Fall, displacement or shaking etc. it is unexpected.
Fig. 4 and Fig. 7 are please referred to, in some embodiments, light source 13 can also use fixed form as shown in Figure 7 solid
It is scheduled on board unit 11.Specifically, structured light projector 10 includes multiple supporting blocks 18, and supporting block 18 can be fixed on substrate
On component 11, light source 13 can be directly installed on multiple supporting blocks by 18 common ambient light source 13 of multiple supporting blocks when mounted
Between 18.In one example, light source 13 is clamped in multiple supporting blocks 18 jointly, to further prevent light source 13 to shake.
In some embodiments, protection cap 16 can be omitted, and diffraction optical element 15 can be arranged in host cavity at this time
In 121, the diffraction exit facet 154 of diffraction optical element 15 can offset with roof 122, after laser passes through diffraction optical element 15
It is pierced by light hole 1212 again.In this way, diffraction optical element 15 is not easily to fall off.
In some embodiments, substrate 111 can save, and light source 13 can be directly anchored on circuit board 112 to subtract
The integral thickness of small structured light projector 10.
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 present invention.
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 description purposes only, it is not understood to indicate or imply 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 feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two,
Three, unless otherwise specifically defined.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification, and the scope of the present invention is limited by claim and its equivalent.
Claims (10)
1. a kind of control system of structured light projector, which is characterized in that the control system includes：
First driving circuit, first driving circuit connect with the structured light projector and are used to drive the structure light to throw
Emitter projects laser；
Second driving circuit, second driving circuit connect with first driving circuit and are used for the first driving electricity
Road powers；With
Supervision timer, the supervision timer are connect with first driving circuit and second driving circuit, the prison
Depending on timer for receiving prearranged signals, and the supervision timer in scheduled duration for not receiving the prearranged signals
When, first driving circuit and second driving circuit are closed to close the structured light projector.
2. control system according to claim 1, which is characterized in that the control system further includes application processor, institute
It states application processor to be all connected with first driving circuit, the application processor and the supervision timer, the application
Processor is used to send the prearranged signals to the supervision timer.
3. control system according to claim 2, which is characterized in that the supervision timer is additionally operable in scheduled duration
When not receiving the prearranged signals, the reset signal for restarting the application processor is sent out.
4. control system according to claim 2, which is characterized in that the supervision timer is integrated in the application processing
In device or the supervision timer is connected to outside the application processor.
5. control system according to claim 1 or 2, which is characterized in that the scheduled duration is [50,150] millisecond.
6. a kind of project structured light component, which is characterized in that including：
Structured light projector；With
Control system described in claim 1, the structured light projector are connect with first driving circuit.
7. a kind of electronic device, which is characterized in that including：
Structured light projector；With
Control system described in claim 1 to 5 any one, first driving circuit connect with the structured light projector
It connects.
8. electronic device according to claim 7, which is characterized in that the structured light projector can be thrown to target object
Laser is penetrated, the electronic device further includes：
Infrared camera, the infrared camera can be received by the modulated laser pattern of the target object；With
Microprocessor, the microprocessor connect with the infrared camera, the microprocessor and first driving circuit
It connects, the microprocessor is for handling the laser pattern to obtain depth image.
9. electronic device according to claim 8, which is characterized in that the application processor is formed with credible execution ring
Border, the microprocessor connect with the application processor and are used to the depth image being transferred to the credible performing environment
In.
10. a kind of control method of structured light projector, which is characterized in that the structured light projector connects with the first driving circuit
It connects, first driving circuit is also connect with the second driving circuit, and first driving circuit is for driving the structure light to throw
Emitter projects laser, and second driving circuit is used for first drive circuitry, and the control method includes：
Drive the structured light projector projection laser；
Receive prearranged signals；With
When not receiving the prearranged signals in scheduled duration, first driving circuit and second driving circuit are closed
To close the structured light projector.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540383.XA CN108736312B (en) | 2018-05-30 | 2018-05-30 | Control system for structured light projector, structured light projection assembly and electronic device |
| EP19793410.2A EP3657774B1 (en) | 2018-04-28 | 2019-04-15 | Control system, control method and control device for camera module, electronic device and computer readable storage medium |
| PCT/CN2019/082699 WO2019205975A1 (en) | 2018-04-28 | 2019-04-15 | Control system, control method and control device for camera module, electronic device and computer readable storage medium |
| US16/742,384 US11184513B2 (en) | 2018-04-28 | 2020-01-14 | System, method and device for controlling electronic device and its target camera and laser projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540383.XA CN108736312B (en) | 2018-05-30 | 2018-05-30 | Control system for structured light projector, structured light projection assembly and electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205975A1 (en) * | 2018-04-28 | 2019-10-31 | Oppo广东移动通信有限公司 | Control system, control method and control device for camera module, electronic device and computer readable storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1926727A (en) * | 2004-03-03 | 2007-03-07 | 菲尼萨公司 | Transmitter and receiver optical sub-assemblies with optical limiting elements |
| CN102411702A (en) * | 2011-06-10 | 2012-04-11 | 广州捷宝电子科技发展有限公司 | Peak filter laser barcode recognizing method |
| CN105786657A (en) * | 2016-03-25 | 2016-07-20 | 宇龙计算机通信科技(深圳)有限公司 | Terminal halting processing method and terminal |
| CN107122032A (en) * | 2016-02-25 | 2017-09-01 | 西安中兴新软件有限责任公司 | Terminal, crash reset control circuit and method |
-
2018
- 2018-05-30 CN CN201810540383.XA patent/CN108736312B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1926727A (en) * | 2004-03-03 | 2007-03-07 | 菲尼萨公司 | Transmitter and receiver optical sub-assemblies with optical limiting elements |
| CN102411702A (en) * | 2011-06-10 | 2012-04-11 | 广州捷宝电子科技发展有限公司 | Peak filter laser barcode recognizing method |
| CN107122032A (en) * | 2016-02-25 | 2017-09-01 | 西安中兴新软件有限责任公司 | Terminal, crash reset control circuit and method |
| CN105786657A (en) * | 2016-03-25 | 2016-07-20 | 宇龙计算机通信科技(深圳)有限公司 | Terminal halting processing method and terminal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205975A1 (en) * | 2018-04-28 | 2019-10-31 | Oppo广东移动通信有限公司 | Control system, control method and control device for camera module, electronic device and computer readable storage medium |
| US11184513B2 (en) | 2018-04-28 | 2021-11-23 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | System, method and device for controlling electronic device and its target camera and laser projector |
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| CN108736312B (en) | 2021-04-02 |
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