CN105990788A - Pulse VCSEL (Vertical Cavity Surface Emitting Laser) laser driving circuit based on USB power supply - Google Patents
Pulse VCSEL (Vertical Cavity Surface Emitting Laser) laser driving circuit based on USB power supply Download PDFInfo
- Publication number
- CN105990788A CN105990788A CN201510078530.2A CN201510078530A CN105990788A CN 105990788 A CN105990788 A CN 105990788A CN 201510078530 A CN201510078530 A CN 201510078530A CN 105990788 A CN105990788 A CN 105990788A
- Authority
- CN
- China
- Prior art keywords
- vcsel laser
- drive circuit
- pulse
- vcsel
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a pulse VCSEL (Vertical Cavity Surface Emitting Laser) laser driving circuit based on USB power supply and a method thereof. The circuit comprises a VCSEL laser driving circuit, an energy storage circuit and a power processing module, wherein the VCSEL laser driving circuit is used for driving a VCSEL array; the energy storage circuit is used for storing electric energy and providing driving electric energy for the VCSEL laser driving circuit, and the energy storage circuit is electrically connected with the VCSEL laser driving circuit; and the power processing module is used for providing electric energy for the energy storage circuit, the power processing module is electrically connected with the energy storage circuit, the power supply module comprises a USB interface and the power processing module, and the power processing module is electrically connected with the USB interface.
Description
Technical field
The present invention relates to a kind of VCSEL laser drive circuit, further, relate to one and be applied to hand-held
The VCSEL array of laser projection, 3D scanning product drives and the detection of laser inverse projection product is powered mould
Block.
Background technology
VCSEL (Vertical Cavity Surface Emitting Laser vertical cavity surface emitting laser) is a kind of
Semiconductor Laser, has single longitudinal mode operation, circular section emergent light, is readily configured two-dimensional array and fits
In superior functions such as online wafer level tests, it is widely used in the field such as photoelectric communication and photo-electric control.
VCSEL array is high-power constant current drive device, generally needs external special high-power constant current
Drives works.Therefore when some low-power equipments, such as handhold portable equipment, 3D scanning product and
When laser inverse projection module etc. apply VCSEL array in circuit, due to the low-voltage of equipment, small area analysis etc.
Supplied character so that can not well apply VCSEL array in these products, thus limit equipment
Performance.
In some hand-held portable devices, apply VCSEL array, have lithium battery or PC (Personal
Computer) power based on USB (the Universal Serial Bus USB (universal serial bus)) port of machine,
It is known that for small portable device, such as Handheld laser projection pen, be all the battery using capacity less,
Output voltage and electric current are the most relatively low, and the output voltage of the USB port of PC is generally 5V, are also belonging to
Low-voltage, therefore, these employ the power supply mode of equipment of VCSEL array, it is impossible to provide enough driving
Energy so that VCSEL array normally works.
According to the electric property of self, all there is the electricity such as respective rated current, rated voltage in each electronic device
Learn parameter, therefore can not deacclimatize VCSEL array by the simple parameter changing piece electrical equipment self
Work, the how normal work of original electronic device in not impact equipment, make the VCSEL array can simultaneously
With normal work, playing its due performance, this is that VCSEL is applied to Handheld laser projection, 3D sweeps
Need when retouching the electronic equipment such as the VCSEL array driving of product and the detection supply module of laser inverse projection product
Major issue to be solved.
Summary of the invention
Present invention is primarily targeted at and a kind of pulse VCSEL Laser Driven electricity powered based on USB is provided
Road, it passes through circuit realiration high efficiency drive VCSEL array under low-voltage/small area analysis and works.
Another object of the present invention is to provide a kind of pulse VCSEL Laser Driven electricity powered based on USB
Road, it passes through circuit realiration high efficiency drive VCSEL laser works under low-voltage/small area analysis.
Another object of the present invention is to provide a kind of pulse VCSEL Laser Driven electricity powered based on USB
Road, it passes through an energy-storage units, it is provided that VCSEL laser drive circuit operating current.
Another object of the present invention is to provide a kind of pulse VCSEL Laser Driven electricity powered based on USB
Road, it passes through an on-off circuit, control circuit power supply processing module and VCSEL laser drive circuit and energy storage
The connecting and disconnecting of the circuit of unit.
Another object of the present invention is to provide a kind of pulse VCSEL Laser Driven electricity powered based on USB
Road, it stores electric energy by ultracapacitor.
Another object of the present invention is to provide a kind of pulse VCSEL Laser Driven electricity powered based on USB
Road, it provides driving electric energy by ultracapacitor to VCSEL laser drive circuit.
Another object of the present invention is to provide a kind of pulse VCSEL Laser Driven electricity powered based on USB
Road, on-off circuit includes field effect transistor, controls described super capacitor and described power supply processing module and VCSEL
The break-make of laser drive circuit.
Another object of the present invention is to provide a kind of pulse VCSEL Laser Driven electricity powered based on USB
Road, it is become pulsed drive to the type of drive of VCSEL array from original DC driven so that VCSEL
The caloric value of array reduces, thus work is more stable, and reliability increases.
Another object of the present invention is to provide a kind of pulse VCSEL Laser Driven electricity powered based on USB
Road, it exports pwm pulse so that type of drive is become pulsed drive from original DC driven.
Another object of the present invention is to provide a kind of pulse VCSEL Laser Driven electricity powered based on USB
Road, it exports pwm pulse, adjustable output voltage, it is ensured that VCSEL laser constant-current normally works.
Another object of the present invention is to provide a kind of pulse VCSEL Laser Driven electricity powered based on USB
Road, it uses double pwm pulse output, controls driving pulse trailing edge conditions of streaking.
Another object of the present invention is to provide a kind of pulse VCSEL Laser Driven electricity powered based on USB
Road, its drive circuit volume reduces, it is achieved the lightweight of product.
Another object of the present invention is to provide a kind of pulse VCSEL Laser Driven electricity powered based on USB
Road, it uses inter-train pause to Large Copacity super capacitor fast charging, utilizes super capacitor in pulse width time
Repid discharge and high energy density characteristic, solve constant current large driven current density during Millisecond pulse.
In order to realize above goal of the invention, the present invention provides a kind of pulse VCSEL laser powered based on USB
Drive circuit, comprising:
One VCSEL laser drive circuit, is used for driving VCSEL array；
One accumulator, is used for storing electric energy, it is provided that described VCSEL laser drive circuit drives electric energy, institute
State accumulator and be electrically connected to described VCSEL laser drive circuit；With
One power supply processing module, is used for providing electric energy to electrically connect in described accumulator, described power supply processing module
In described accumulator, wherein said power module includes a USB interface and a power supply processing module, described electricity
Source processing module is electrically connected to described USB interface.
Preferably, described energy storage protection circuit includes an energy-storage units, when described VCSEL laser drive circuit
When output pulse is low level, described power supply processing module charges to described energy-storage units.
Preferably, described power supply processing module is electrically connected to described energy-storage units.
Preferably, described power supply processing module is electrically connected to described microprocessor unit.
Preferably, when described VCSEL laser drive circuit is output as high level, described energy-storage units is to institute
State VCSEL laser drive circuit and electric energy is provided.
Preferably, wherein said energy storage protection circuit includes an on-off circuit, and described on-off circuit controls described electricity
The connecting and disconnecting of the circuit of source processing module and described VCSEL laser drive circuit and described energy-storage units.
Preferably, described energy-storage units includes at least one ultracapacitor.
Preferably, described on-off circuit includes a field effect transistor.
Preferably, when described field effect transistor control described VCSEL laser drive circuit and described power module with
The break-make of described super capacitor.
Preferably, described VCSEL laser drive circuit includes that a DC/DC conversion electric power module and a sampling are anti-
Feedback module, described DC/DC conversion electric power module is used for changing described energy-storage units input power, described sampling
Feedback module is used for feedback information in described microprocessor unit.
Preferably, wherein said VCSEL laser drive circuit uses pwm pulse to drive described VCSEL to swash
Light device.
Preferably, wherein said VCSEL laser drive circuit uses double pwm pulse to drive described VCSEL
Laser instrument.
Preferably, it farther includes a UART DLL, is connected to described microprocessor unit.
According to a further aspect of the invention, also provide for a kind of VCSEL laser-driving method, it include as
Lower step:
Thering is provided a power module, an energy storage protection circuit, described power module charges to described energy storage protection circuit；
Thering is provided a VCSEL laser drive circuit, described energy storage protection circuit is to described VCSEL Laser Driven electricity
Road powers；With
VCSEL laser instrument described in described VCSEL laser drive circuit pulsed drive.
Preferably, said method is applicable to USB power supply mode.
Preferably, in the above-mentioned methods, in described step (A), described power module includes that a USB connects
Mouth and a power supply processing module, described power supply processing module is electrically connected to described USB interface.
Preferably, in the above-mentioned methods, in described step (A), described energy storage protection circuit includes a storage
Leading to of energy unit and an on-off circuit, the described on-off circuit described energy-storage units of control and described power supply processing module
Disconnected.
Preferably, in the above-mentioned methods, described VCSEL laser drive circuit uses VCSEL described in pulsed drive
Laser instrument.
Preferably, in the above-mentioned methods, when the output pulse of described VCSEL laser drive circuit is low level,
Described power supply processing module charges to described energy-storage units, when described VCSEL laser drive circuit is output as height
During level, described energy-storage units provides electric energy to described VCSEL laser drive circuit.
Preferably, in the above-mentioned methods, described energy-storage units includes at least one ultracapacitor.
Preferably, in the above-mentioned methods, described on-off circuit includes a field effect transistor.
Preferably, in the above-mentioned methods, described field effect transistor controls described VCSEL laser drive circuit and institute
State the break-make of power module and described super capacitor.
Preferably, in the above-mentioned methods, described VCSEL laser drive circuit uses pwm pulse to drive institute
State VCSEL array.
Preferably, in the above-mentioned methods, described VCSEL laser drive circuit uses double pwm pulse to drive
Described VCSEL array.
Preferably, in the above-mentioned methods, step is farther included: described by a UART DLL amendment
Pwm pulse pulse duty cycle.
Accompanying drawing explanation
Fig. 1 is a kind of pulse VCSEL laser powered based on USB according to a preferred embodiment of the invention
The circuit module figure of drive circuit.
Fig. 2 is the pulse VCSEL Laser Driven powered based on USB according to a preferred embodiment of the invention
Another circuit module figure of circuit.
Fig. 3 is the pulse VCSEL Laser Driven powered based on USB according to a preferred embodiment of the invention
The energy storage schematic diagram of circuit.
Fig. 4 is the pulse VCSEL Laser Driven powered based on USB according to a preferred embodiment of the invention
The driving schematic diagram of circuit.
Fig. 5 is the pulse VCSEL Laser Driven powered based on USB according to a preferred embodiment of the invention
The circuit diagram of circuit.
Fig. 6 is the pulse VCSEL Laser Driven powered based on USB according to a preferred embodiment of the invention
The another circuit module figure of circuit.
Fig. 7 is the pulse VCSEL Laser Driven powered based on USB according to a preferred embodiment of the invention
The method block diagram of circuit.
Detailed description of the invention
Hereinafter describe and be used for disclosing the present invention so that those skilled in the art are capable of the present invention.In below describing
Preferred embodiment be only used as citing, it may occur to persons skilled in the art that other obvious modification.With
The ultimate principle of the present invention defined in lower description can apply to other embodiments, deformation program, improvement side
Case, equivalent and the other technologies scheme without departing from the spirit and scope of the present invention.
Such as Fig. 1, shown in Fig. 2, it is the pulse powered based on USB according to a preferred embodiment of the invention
The circuit module figure of VCSEL laser drive circuit.The described pulse VCSEL laser powered based on USB drives
Galvanic electricity road includes a VCSEL laser drive circuit, for driving a VCSEL array；One energy storage protection electricity
Road, is used for providing driving electric current in described laser in described VCSEL laser drive circuit, is electrically connected to described
VCSEL laser drive circuit；With a power module, it is used for providing electric energy in described energy storage protection circuit, electricity
It is connected to described energy storage protection circuit.
It is noted that when the described pulse VCSEL laser drive circuit powered based on USB is applied to one
During electrical equipment, described power module by obtaining electric energy from external equipment, thus can provide electric energy in described
Energy storage protection circuit；Electric energy can also be provided by the way of self integrated DC power supply in described energy storage protection electricity
Road, thus provide electric energy in described VCSEL laser drive circuit, drive described VCSEL Laser Driven electricity
Road works；Can also is that original power supply that described power module is directly connected in described electrical equipment, by institute
State the conversion of power module, it is provided that electric energy is in described VCSEL laser drive circuit.As, at handhold portable
In equipment, the battery of hand-held portable devices can be integrated in described power module, thus low-voltage is directly provided
Electric energy.It is to say, described pulse VCSEL laser drive circuit makes low-tension supply equipment to drive
VCSEL array works so that the VCSEL array originally needing high-power driving device drives can be at low electricity
Realize under the conditions of pressure driving, and be not limited to the type of input voltage.Detailed description below implementation.
According to a preferred embodiment of the invention, described power module includes that a USB interface and a power supply process
Module, described power supply processing module is electrically connected to described USB interface.Outside described USB interface is used for electrically connecting
Portion's equipment, say, that can be electrically connected to any outside by connecting line etc. by described USB interface can
To provide the equipment of power supply, thus obtain the electric energy that can be provided in described energy storage protection circuit.
According to electric rudimentary knowledge, different electrical equipments or electrical equipment have respective rated operational voltage,
When the electric parameters such as rated operational current, different electrical equipments or electrical equipment to be connected to same stage circuit,
Need to meet identical electric pressure, thus ensure that each electrical equipment works in normal state.According to the present invention
A preferred embodiment, described power supply processing module is used for converting electrical energy, so that by described USB interface
The electric pressure accessed is suitable to described energy storage protection circuit.
Described power supply processing module can be a voltage current adapter, the electricity that will be accessed by described USB interface
Pressure or electric current are converted to the voltage adapted with described energy storage protection circuit or electric current.
It is noted that the preferred described USB interface form of plant-grid connection mode, the most described drive circuit
Power supply can be accessed from outside, it is also possible to power supply is set in inside, as arranged battery module, provide electricity in inside
Source, it is not necessary to access from outside.
According to a preferred embodiment of the invention, described energy storage protection circuit includes an energy-storage units and a switch electricity
Road.Described energy-storage units is used for storing electric energy, it is provided that electric energy is in described VCSEL laser drive circuit.Described
On-off circuit is used for controlling described power supply processing module and described VCSEL laser drive circuit and described energy storage list
The connecting and disconnecting of the circuit of unit.
With reference to shown in Fig. 5, described pulse VCSEL laser drive circuit based on low-voltage includes a VCSEL
Laser instrument, described VCSEL laser drive circuit drives described VCSEL laser works.Described VCSEL
Laser instrument includes VCSEL array, say, that described VCSEL laser drive circuit drives described VCSEL
Array works.
Further, described VCSEL exports driving pulse, drives described VCSEL laser by pulse mode
Device, is become pulse drive mode from original DC driven mode so that VCSEL array need not locate always
In constant current "on" position, thus reduce the caloric value of described VCSEL laser array, work more stable,
Reliability increases.
When described VCSEL laser drive circuit exports high level pulse, say, that described VCSEL laser
When drive circuit works needs to drive described VCSEL array to work, owing to VCSEL array is high power constant
Stream driving element, normal conditions need external special high power constant current circuit to drive, therefore the most defeated when low-voltage
Fashionable, it is impossible to enough driving energy are provided.According to a preferred embodiment of the invention, as described VCSEL
During laser drive circuit output high level pulse, described on-off circuit controls described energy-storage units and is electrically connected to described
VCSEL laser drive circuit, it is provided that drive energy to work in described VCSEL laser drive circuit, thus drive
Dynamic described VCSEL laser works；Interpulse when described VCSEL laser drive circuit output low level
Gap, described on-off circuit controls described energy-storage units and disconnects with described VCSEL laser drive circuit, described electricity
Source processing module is electrically connected to described energy-storage units, and electric energy supplement is in described energy-storage units.
Further, say, that when described VCSEL laser instrument needs to drive work, described energy storage is protected
The described energy-storage units of protection circuit provides enough driving energy to swash in described VCSEL by the electric energy of storage
Light drive circuit, so that described VCSEL laser drive circuit drives described laser works, when described
When VCSEL laser instrument is in pulses low gap, the energy-storage units of described energy storage protection circuit is by described
The external circuit that USB interface accesses stores electric energy through the conversion of described power supply processing module, in case described
Use during the work of VCSEL laser drive circuit.Wherein, described VCSEL laser drive circuit and described power supply
Processing module is controlled by described on-off circuit with the break-make of described energy-storage units circuit.
By above-mentioned it will be seen that stored the low-voltage electricity accessed by described USB interface by described accumulator
Can, indirectly provide and meet the electric energy driving the work of described VCSEL laser drive circuit, so that described
The low-voltage that USB interface accesses can drive VCSEL laser drive circuit to work, thus drives described
VCSEL laser works, thus solve low-voltage and can not drive asking of described VCSEL laser works
Topic.
Further, need to solve the problem of electric energy storage, according to a preferred embodiment of the invention, described energy storage
Unit includes at least one super capacitor, is used for storing electric energy.Described on-off circuit includes a field effect transistor.Reference
Shown in Fig. 5, described super capacitor is electrically connected to described energy storage protection circuit, and described field effect transistor is electrically connected to institute
State energy storage protection circuit.
Further, described VCSEL laser drive circuit uses dual output PMW (Pulse Width
Modulation pulse width modulation) pulse, it is expressed as PWM1 and PWM2, shown in reference Fig. 5,
One road PMW1 pulse is exported by described energy storage protection circuit, when described energy storage protection circuit exports PMW1 arteries and veins
When punching is in low level pulse gap, the described field effect transistor of described energy storage protection circuit controls to connect described power supply
Processing module and described super capacitor, say, that described field effect transistor connects the outside of described USB interface
Power supply and described super capacitor, be the voltage accessing described energy storage protection circuit with reference to Fig. 5, VIN, namely lead to
Cross the voltage having described USB interface to access after described power supply processing module processes, by by described USB interface
The voltage VIN accessed is the charging of described super capacitor.At the output PMW1 pulse of described energy storage protection circuit
When high level works, the described field effect transistor of described energy storage protection circuit disconnects described power supply processing module and institute
Stating super capacitor, described super capacitor is connected with described VCSEL laser drive circuit, and described super capacitor is fast
Speed electric discharge, it is provided that drive electric energy in described VCSEL laser drive circuit.
According to a preferred embodiment of the invention, with reference to Fig. 2, the described pulse VCSEL powered based on USB
Laser drive circuit farther includes a microprocessor unit, is used for providing control signal single in described energy storage protection
First and described VCSEL laser drive circuit.Described microprocessor unit signal is connected to described USB interface,
Described microprocessor unit is electrically connected to described power supply processing module.Described microprocessor unit signal connects described
Energy storage protection circuit and described VCSEL laser drive circuit.
Described VCSEL laser drive circuit includes a DC/DC conversion electric power module and a sampling feedback module.
Described DC/DC power module is for changing the power supply of the described energy-storage units input of described energy storage protection circuit.
Described sampling feedback module is for feeding back described VCSEL laser drive circuit information in described microprocessor list
Unit.
The PWM2 pulse of another road be arranged at described VCSEL laser drive circuit DC/DC conversion electric power
Module, described pulse PWM1 and described pulse PWM2 match, and form pulse-pair output, control and drive
Moving pulse is at the conditions of streaking of trailing edge.
The electric energy accessed by described USB interface is divided into two-way after described power supply processing module processes, a road
Accessing described microprocessor unit, it is provided that the work of described microprocessor unit, another road is accessed described energy storage and is protected
Protection circuit, provides the electric energy of storage for energy-storage units.Described microprocessor unit is provided by described power supply processing module
Work energy, receives the signal of described USB interface input, it is provided that control signal is in described energy storage protection circuit
With described VCSEL laser drive circuit, and receive by described VCSEL laser drive circuit return adopting
Sample feeds back, and then is controlled the work of described energy storage protection circuit by described microprocessor unit.
Specifically, during described VCSEL laser instrument is in pulsed operation, namely in pulse width time, institute
State microprocessor unit provide control signal in described energy storage protection circuit, by controlling the pass of described field effect transistor
The disconnected input current with described power supply processing module, protection is owing to described VCSEL laser instrument is at big current work
Period drags down the running voltage of whole system, causes the instability of system or cannot normally work.Now, institute
Stating microprocessor unit provides control signal in the described on-off circuit of described energy storage protection circuit, connects described storage
The energy-storage units of energy protection circuit and described VCSEL laser drive circuit, disconnect described energy storage protected location
Described energy-storage units and described power supply processing module, by the Large Copacity super capacitor moment of described energy storage protection power supply
The electric energy of release provides input current for described VCSEL laser drive circuit.
When described VCSEL laser pulse gap, described microprocessor unit provides control signal in described storage
Energy protection circuit, is opened by the described field effect transistor controlling described energy storage protection circuit and described power supply processes mould
The input current of block.Now, described energy-storage units disconnects with described VCSEL laser drive circuit, described storage
The described super capacitor of the described energy-storage units of energy protection circuit is obtained electric energy by described power supply processing module and fills
Electricity energy storage.
By super capacitor fundamental characteristics it is recognised that super capacitor capacitance is big, due to its distinctive structure, tool
There is high-energy-density, it is provided that the super capacitor nominal discharge current of the biggest discharge current, such as 2700F
Being not less than 950A, discharge peak currents can reach 1680A, and general accumulator or aneroid battery can not
There is the highest discharge current, when the accumulator of some high discharge currents works under the highest electric current, the life-span
To be substantially reduced.Super capacitor can quick charge within tens of seconds to several minutes, accumulator is in such short time
Interior charging will special hazard.According to a preferred embodiment of the invention, make full use of the characteristic of super capacitor,
Inter-train pause to Large Copacity super capacitor fast charging, utilize in pulse width time the repid discharge of super capacitor with
High energy density characteristic, to described VCSEL laser drive circuit repid discharge, solves Millisecond pulse period
Between constant current large driven current density.
According to a preferred embodiment of the invention, the described DC/DC conversion of described VCSEL laser drive circuit
Power module uses big current synchronization rectification BUCK type DC/DC conversion electric power module.Described big current synchronization
The feature that rectification BUCK type DC/DC conversion electric power module is high with its conversion efficiency, integrated level is high is portable
It is widely used on equipment.
It is noted that described arteries and veins VCSEL laser drive circuit uses PWM current peak control mode,
Substantially increase the transient response of load.According to a preferred embodiment of the invention, described BUCK type DC/DC
The PWM control mode of conversion electric power module is under fixed frequency, by controlling accounting for of pwm pulse signal
Empty than the adjustment realized output voltage.Described sampling feedback circuit Real-time Collection VCSEL laser instrument is in work
Time electric current, feed back to described microprocessor unit, adjust the dutycycle of pwm control signal, defeated to regulate
Go out voltage, it is ensured that described VCSEL laser constant-current normally works.
It will also be appreciated that according to a preferred embodiment of the invention, described VCSEL laser drive circuit
It is in order to adapt to VCSEL laser instrument and the requirement of its particular job and to design, described VCSEL Laser Driven
The basic technical indicator of circuit is: (1) output electric current pulsewidth 3～10ms is adjustable；(2) output current impulse
Frequency 5～10hz is adjustable；(3) output driving current 2～8A constant current is adjustable.Based on above-mentioned technical specification, adopt
With inter-train pause to Large Copacity super capacitor fast charging energy storage, during pulse in utilize super capacitor quickly to put
Electricity and high energy density characteristic, add that in engineer applied, system scale minimizes, rationalize and portable
Under requirement, have employed the above-mentioned pulse VCSEL laser drive circuit powered based on USB.Based on output electric current
PMW pulsewidth and frequency-adjustable, so in the selection of super capacitor capacity, needing suitable relaxing.False
If the output electric current pulsewidth of this VCSEL laser drive circuit is 10ms, frequency is 10hz, and output electric current is
8A, i.e. within a pulse period, the pulse period VCSEL laser works of 10ms, remaining 90ms
Super charging in inter-train pause, according to the discharge and recharge formula of super capacitor: C=I*dt/dv, I are average maximum work
Make electric current 8A, dt be 10ms, dv pressure drop discharge time be 5V, thus can be rough to calculate this super
Minimum capacity needed for electric capacity.Otherwise the charging interval, also visitor was drawn by above-mentioned theory computing formula.Described field effect
Pipe switching speed is exceedingly fast, and typically can reach the switching speed of ns rank, does not results in electric current tail simultaneously and drags existing
As.In view of the above-mentioned performance of field effect transistor, described field effect transistor device fully meets VCSEL laser drive circuit
Design objective.
It will also be appreciated that described super capacitor and the application of described field effect transistor, on engineer applied, make
The pulse VCSEL laser drive circuit scale mini powered based on USB described in, circuit overall volume is relatively
Little, lightweight, be suitable to be applied to Handheld laser projection, the VCSEL array of 3D scanning product drive with
And the electronic product such as the detection supply module of laser inverse projection product.
It will also be appreciated that with reference to shown in Fig. 6, the described pulse VCSEL laser powered based on USB drives
UART is reserved on galvanic electricity road, and (Universal Asynchronous Receiver/Transmitter, universal asynchronous receiving-transmitting passes
Defeated device) DLL, revise driving pulse PWM duty cycle, accurate tune by described UART DLL
Whole driving size of current.
With reference to shown in Fig. 7, according to above preferred embodiment, the present invention provides a kind of VCSEL Laser Drive
Method, described method comprises the steps:
(A) providing a power module, an energy storage protection circuit, described power module is to described energy storage protection electricity
Charge in road；
(B) providing a VCSEL laser drive circuit, described energy storage protection circuit is to described VCSEL laser
Drive circuitry；With
(C) VCSEL laser instrument described in described VCSEL laser drive circuit pulsed drive.
Especially, described VCSEL laser-driving method is preferably adapted for USB power supply mode.
In described step (A), described power module includes a USB interface and a power supply processing module, institute
State power supply processing module and be electrically connected to described USB interface.
In described step (A), described energy storage protection circuit includes an energy-storage units and an on-off circuit, described
On-off circuit controls described energy-storage units and the break-make of described power module.Described energy-storage units includes that at least one surpasses
Level electric capacity.It is to say, described power module charges to described super capacitor, so that described super capacitor is deposited
Storage electric energy, in order to discharge electric energy to described VCSEL laser drive circuit.
Owing to described VCSEL laser drive circuit is by VCSEL laser instrument described in output pulsed drive, also
That is, within a working cycle, there is high level pulse working hour and low level pulse gap, in institute
Stating in step (B), when the output pulse of described VCSEL laser drive circuit is high level, described energy storage is protected
Unit is powered to described VCSEL laser drive circuit, when described VCSEL laser drive circuit exports pulse
During for low level pulse gap, described energy storage protection circuit stops powering to described VCSEL laser drive circuit.
Especially, in described step (B), when the output pulse of described VCSEL laser drive circuit is high electricity
At ordinary times, described super capacitor is powered to described VCSEL laser drive circuit, when described VCSEL laser drives
When dynamic circuit output pulse is low level pulse gap, described super stopping is to described VCSEL Laser Driven electricity
Road powers, and described power module charges to described super capacitor.
Preferably, described on-off circuit includes a field effect transistor, described field effect transistor control described power module and
Described VCSEL laser drive circuit and the break-make of described super capacitor.
Preferably, described VCSEL laser drive circuit uses double PWM output, to control pwm pulse
The conditions of streaking of trailing edge.
It should be understood by those skilled in the art that the embodiments of the invention shown in foregoing description and accompanying drawing are only used as
Illustrate and be not limiting as the present invention.The purpose of the present invention is completely and be effectively realized.The function of the present invention and
Structural principle is shown the most in an embodiment and illustrates, without departing under described principle, and embodiments of the present invention
Can there be any deformation or amendment.
Claims (25)
1. the pulse VCSEL laser drive circuit powered based on USB, it is characterised in that including:
One VCSEL laser drive circuit, for driving a VCSEL laser instrument；
One energy storage protection circuit, is used for storing electric energy, it is provided that described VCSEL laser drive circuit drives electric energy,
Described energy storage protection circuit is electrically connected to described VCSEL laser drive circuit；
One microprocessor unit, is used for controlling described energy storage protection circuit and described VCSEL laser drive circuit；
With
One power module, be used for providing electric energy in described energy storage protected location and described microprocessor unit, wherein
Described power module includes a USB interface and a power supply processing module, and described power supply processing module is electrically connected to
Described USB interface.
2. the pulse VCSEL laser drive circuit powered based on USB as claimed in claim 1, wherein
Described energy storage protection circuit includes an energy-storage units, when the output pulse of described VCSEL laser drive circuit is low
During level, described power supply processing module charges to described energy-storage units.
3. the pulse VCSEL laser drive circuit powered based on USB as claimed in claim 2, wherein,
Described power supply processing module is electrically connected to described energy-storage units.
4. the pulse VCSEL laser drive circuit powered based on USB as claimed in claim 2, wherein,
Described power supply processing module is electrically connected to described microprocessor unit.
5. the pulse VCSEL laser drive circuit powered based on USB as claimed in claim 2, works as institute
Stating VCSEL laser drive circuit when being output as high level, described energy-storage units drives to described VCSEL laser
Galvanic electricity road provides electric energy.
6. the pulse VCSEL laser drive circuit powered based on USB as claimed in claim 2, wherein
Described energy storage protection circuit includes an on-off circuit, and described on-off circuit controls described power supply processing module and described
VCSEL laser drive circuit and the connecting and disconnecting of the circuit of described energy-storage units.
7. the pulse VCSEL laser drive circuit powered based on USB as claimed in claim 2, wherein
Described energy-storage units includes at least one ultracapacitor.
8. the pulse VCSEL laser drive circuit powered based on USB as claimed in claim 7, wherein
Described on-off circuit includes a field effect transistor.
9. the pulse VCSEL laser drive circuit powered based on USB as claimed in claim 8, works as institute
State field effect transistor and control the logical of described VCSEL laser drive circuit and described power module and described super capacitor
Disconnected.
10. such as the pulse VCSEL laser drive circuit powered based on USB arbitrary in claim 1 to 9,
Wherein said VCSEL laser drive circuit includes a DC/DC conversion electric power module and a sampling feedback module,
Described DC/DC conversion electric power module is used for changing described energy-storage units input power, described sampling feedback module
For feedback information in described microprocessor unit.
In 11. such as claim 1 to 9 arbitrary as described in the pulse VCSEL Laser Driven powered based on USB
Circuit, wherein said VCSEL laser drive circuit uses pwm pulse to drive described VCSEL laser instrument.
The 12. pulse VCSEL Laser Driven powered based on USB as described in claim 14 to 23 is arbitrary
Circuit, wherein said VCSEL laser drive circuit uses double pwm pulse to drive described VCSEL laser
Device.
In 13. such as claim 14 to 23 arbitrary as described in the pulse VCSEL laser powered based on USB drive
Galvanic electricity road, farther includes a UART DLL, is connected to described microprocessor unit.
14. 1 kinds of VCSEL laser-driving methods, it is characterised in that comprise the steps:
(A) providing a power module, an energy storage protection circuit, described power module is to described energy storage protection electricity
Charge in road；
(B) providing a VCSEL laser drive circuit, described energy storage protection circuit is to described VCSEL laser
Drive circuitry；With
(C) VCSEL laser instrument described in described VCSEL laser drive circuit pulsed drive.
15. VCSEL laser-driving methods as claimed in claim 14, it is applicable to USB supplier of electricity
Formula.
16. VCSEL laser-driving methods as claimed in claim 15, in described step (A), institute
Stating power module and include a USB interface and a power supply processing module, described power supply processing module is electrically connected to institute
State USB interface.
17. VCSEL laser-driving methods as claimed in claim 16, in described step (A), institute
Stating energy storage protection circuit and include an energy-storage units and an on-off circuit, described on-off circuit controls described energy-storage units
Break-make with described power supply processing module.
18. VCSEL laser driving methods as claimed in claim 17, wherein, described VCSEL laser
Drive circuit uses VCSEL laser instrument described in pulsed drive.
19. VCSEL laser driving methods as claimed in claim 18, wherein when described VCSEL laser
When drive circuit output pulse is low level, described power supply processing module charges to described energy-storage units, when described
When VCSEL laser drive circuit is output as high level, described energy-storage units is to described VCSEL Laser Driven electricity
Road provides electric energy.
In 20. such as claim 14 to 19 arbitrary as described in VCSEL laser driving method, wherein said storage
At least one ultracapacitor can be included by unit.
In 21. such as claim 14 to 19 arbitrary as described in VCSEL laser driving method, wherein said open
Close circuit and include a field effect transistor.
In 22. such as claim 14 to 19 arbitrary as described in VCSEL laser driving method, described field effect
The break-make of VCSEL laser drive circuit described in management and control system and described power module and described super capacitor.
In 23. such as claim 14 to 19 arbitrary as described in VCSEL laser driving method, wherein said
VCSEL laser drive circuit uses pwm pulse to drive described VCSEL array.
In 24. such as claim 14 to 19 arbitrary as described in VCSEL laser driving method, wherein said
VCSEL laser drive circuit uses double pwm pulse to drive described VCSEL array.
25. VCSEL laser driving methods as claimed in claim 24, farther include step: pass through
UART DLL revises described pwm pulse pulse duty cycle.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510078530.2A CN105990788B (en) | 2015-02-13 | 2015-02-13 | Pulse VCSEL laser drive circuit based on USB power supply |
| US15/309,202 US10715789B2 (en) | 2014-05-06 | 2015-05-06 | Light-deflection three-dimensional imaging device and projection device, and application thereof |
| PCT/CN2015/078366 WO2015169220A1 (en) | 2014-05-06 | 2015-05-06 | Light-deflection three-dimensional imaging device and projection device, and application thereof |
| CN201580023978.2A CN106537252B (en) | 2014-05-06 | 2015-05-06 | Light-conversion three-dimensional imaging device, projection device and application thereof |
| CN201910654123.XA CN110716381B (en) | 2014-05-06 | 2015-05-06 | Light-conversion three-dimensional imaging device, projection device and application thereof |
| EP15788574.0A EP3141954B1 (en) | 2014-05-06 | 2015-05-06 | Light-deflection three-dimensional imaging device and projection device, and application thereof |
| US16/856,000 US20220264073A9 (en) | 2014-05-06 | 2020-04-22 | Light-Deflection Three-Dimensional Imaging Device and Projection Device, and Application Thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510078530.2A CN105990788B (en) | 2015-02-13 | 2015-02-13 | Pulse VCSEL laser drive circuit based on USB power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105990788A true CN105990788A (en) | 2016-10-05 |
| CN105990788B CN105990788B (en) | 2020-01-10 |
Family
ID=57042096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510078530.2A Active CN105990788B (en) | 2014-05-06 | 2015-02-13 | Pulse VCSEL laser drive circuit based on USB power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105990788B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355121A (en) * | 2018-12-21 | 2020-06-30 | 余姚舜宇智能光学技术有限公司 | Double-pulse laser driving system, driving circuit and driving method |
| CN113553280A (en) * | 2021-06-21 | 2021-10-26 | 上海机电工程研究所 | Based on I2C bus integrated electronic platform multi-module time-sharing power-on method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1871754A (en) * | 2003-08-20 | 2006-11-29 | 英特尔公司 | Laser driver circuit |
| CN101436862A (en) * | 2008-12-12 | 2009-05-20 | 中国科学院武汉物理与数学研究所 | VCSEL pulse type accurate drive current source |
| CN201515379U (en) * | 2009-08-29 | 2010-06-23 | 华为终端有限公司 | Data card with laser pen function |
| WO2013035098A1 (en) * | 2011-09-06 | 2013-03-14 | High Sec Labs Ltd. | Single optical fiber kvm extender |
-
2015
- 2015-02-13 CN CN201510078530.2A patent/CN105990788B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1871754A (en) * | 2003-08-20 | 2006-11-29 | 英特尔公司 | Laser driver circuit |
| CN101436862A (en) * | 2008-12-12 | 2009-05-20 | 中国科学院武汉物理与数学研究所 | VCSEL pulse type accurate drive current source |
| CN201515379U (en) * | 2009-08-29 | 2010-06-23 | 华为终端有限公司 | Data card with laser pen function |
| WO2013035098A1 (en) * | 2011-09-06 | 2013-03-14 | High Sec Labs Ltd. | Single optical fiber kvm extender |
Non-Patent Citations (1)
| Title |
|---|
| 陈安民: "《医学影像数字化技术（1）》", 31 December 2012 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355121A (en) * | 2018-12-21 | 2020-06-30 | 余姚舜宇智能光学技术有限公司 | Double-pulse laser driving system, driving circuit and driving method |
| CN111355121B (en) * | 2018-12-21 | 2022-02-22 | 余姚舜宇智能光学技术有限公司 | Double-pulse laser driving system, driving circuit and driving method |
| CN113553280A (en) * | 2021-06-21 | 2021-10-26 | 上海机电工程研究所 | Based on I2C bus integrated electronic platform multi-module time-sharing power-on method and system |
| CN113553280B (en) * | 2021-06-21 | 2023-04-28 | 上海机电工程研究所 | Based on I 2 Multi-module time-sharing power-on method and system for integrated electronic platform of C bus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105990788B (en) | 2020-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hassanalieragh et al. | UR-SolarCap: An open source intelligent auto-wakeup solar energy harvesting system for supercapacitor-based energy buffering | |
| EP3211751B1 (en) | Power management apparatus to supply a sensitive load | |
| CN103887984A (en) | Isolating converter and switching power supply comprising same | |
| US20080013236A1 (en) | Passive switching capacitor network auxiliary voltage source for off-line IC chip and additional circuits | |
| CN102694469A (en) | DC-DC Voltage Converter | |
| CN103219893B (en) | Switch power controller and switching power circuit | |
| CN107112900B (en) | The quick mode of electric power converter converts | |
| US20230134679A1 (en) | Managing optical power in laser system | |
| CN204333898U (en) | A kind of convertible frequency air-conditioner and Intelligent Power Module overcurrent protection Circuit tuning thereof | |
| CN102595721B (en) | High-precision intelligent integrated driving power supply for semiconductor light-emitting device | |
| US20160126773A1 (en) | Charging device and charging method | |
| US20140176025A1 (en) | Energy retrieving device | |
| CN105990788A (en) | Pulse VCSEL (Vertical Cavity Surface Emitting Laser) laser driving circuit based on USB power supply | |
| CN105939104B (en) | A kind of circuit reducing electromagnetic interference by adjusting pulse and increase peak power | |
| CN102306902B (en) | Drive power supply of laser diodes | |
| CN209913692U (en) | Low-voltage side power supply primary side voltage sampling circuit of vehicle-mounted DCDC converter | |
| US9711984B2 (en) | High voltage generation method at battery system | |
| CN110254290A (en) | BMS battery management communication system | |
| US20020008498A1 (en) | Charge circuit | |
| EP3278439B1 (en) | Constant on-time (cot) control in isolated converter | |
| CN205092770U (en) | Power management circuit that steps up | |
| CN111555645B (en) | Voltage stabilizing circuit capable of outputting controllable voltage | |
| US9658632B2 (en) | Systems, methods, and devices for bootstrapped power circuits | |
| CN105978355A (en) | Electric automobile vehicle-mounted DC/DC apparatus | |
| CN203233312U (en) | Switch power supply controller and switch power supply device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |