CN106160064A - Based on battery powered portable optical fiber source driving means - Google Patents

Based on battery powered portable optical fiber source driving means Download PDF

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Publication number
CN106160064A
CN106160064A CN201510859629.6A CN201510859629A CN106160064A CN 106160064 A CN106160064 A CN 106160064A CN 201510859629 A CN201510859629 A CN 201510859629A CN 106160064 A CN106160064 A CN 106160064A
Authority
CN
China
Prior art keywords
temperature
light source
light
optical fiber
circuit
Prior art date
Application number
CN201510859629.6A
Other languages
Chinese (zh)
Inventor
马迎建
刘凯铭
Original Assignee
马迎建
刘凯铭
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 马迎建, 刘凯铭 filed Critical 马迎建
Priority to CN201510859629.6A priority Critical patent/CN106160064A/en
Publication of CN106160064A publication Critical patent/CN106160064A/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with indicating devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063Circuits adapted for supplying loads only
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with indicating devices
    • H02J2007/0049Detection of fully charged condition
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0052Charge circuits only
    • H02J2007/0062Charge provided using USB port connectors

Abstract

The present invention proposes a kind of based on battery powered portable optical fiber source driving means, and this device includes internal battery power supply unit, Constant current output circuit, temperature-control circuit and light source driving condition indicating member.Device is powered and be can be selected for lithium ion battery, it is not necessary to voltage up converting circuit can drive normal work;The tube core that Constant current output circuit provides accurate adjustable stabling current to drive light source is luminous;Temperature control circuit detection light source state simultaneously passes through pulse length modulation principle, and die temperature is adjusted by regulation temperature control current;Driving condition indicating member is changed by external lights and buzzer concentrated expression light source constant current, the lithium electricity status information such as charging, die temperature.The present invention is portable small and exquisite, and temperature control efficiency is high, effectively eliminates Hz noise, can be widely applied to the quick investigation of detection, driving and the system failure of sensing and communication optical fiber light source.

Description

Based on battery powered portable optical fiber source driving means

Technical field

The present invention relates to the actuation techniques field of Fibre Optical Sensor and communication field light source.Particularly relate to a kind of application battery That powers has constant current output and the driving of thermostatically controlled light source and instruction device.This device is portable small and exquisite, can be widely applied to The detection of Fibre Optical Sensor light source, solve fault quickly investigate, the practical problem such as the unstable impact of electrical network.

Background technology

Optical fiber sensing technology can realize the accurate sense to physical quantitys such as sound, light, power, heat, electricity, displacements, Aero-Space, There is critical role in the fields such as military affairs, metering.Due to Fibre Optical Sensor it is necessary to have stable light source, thus light source drive device needs Fibre Optical Sensor light source (LD or SLD) to be provides constant drive electric current and stable temperature to control.When power network fluctuation is bigger, drive The constant current accuracy of dynamic instrument can be affected.And battery, especially lithium rechargeable battery have electric discharge steadily, output resistance little, Energy density is high, the significant advantage of memory-less effect, can proof load working stability as electric supply installation.Its Aero-Space, The fields such as E-consumer have commonly used, are a kind of excellent portable application power supply devices.

When sensor-based system fault needs investigation, light source state not clear, portable light source driving means is needed to replace Original drive and indicate light source works state, to realize the quick in time detection of the system failure.Generally, light source drives motion detection device Requiring height to power supply stability, volume is bigger, it is difficult to realize the pocket application that sensing light source drives.Simultaneously in instruction light source work Make in state, to there is also disappearance instruction or indicate the problems such as not simply direct.

Content of the invention

Not enough for existing light source drive device, the present invention to provide a kind of miniaturization, portable optical fiber source to drive dress Put.Use battery to power and solve portability problem, its internal use low power loss constant output, temperature control, amplifier chip, and set Meter driving condition light indicating circuit, it is achieved light source works state-detection.Circuit design reaches miniature portable requirement, driving condition Stablize controlled.

The present invention provide the battery powered portable optical fiber source driving means of one, comprising: battery power supply unit, can Adjust the indicating circuit of Constant current output circuit, pulsewidth modulation temperature-control circuit and each circuit state.

Described battery power supply unit is made up of lithium ion battery and charge management circuit thereof, and lithium battery is built in device, Reduce the electromagnetic interference of outer bound pair power supply unit.Battery will connect constant current output, temperature control, indicating circuit by switch control rule, There is provided power supply for other circuit.

The lithium battery charging management circuit of described battery power supply unit is for being built-in lithium by Micro-USB charging inlet Battery provide charging current, and can by one light emitting diode instruction charging carry out in or charging complete state.

Described lithium battery connects battery charging management circuit and switch respectively, drives dress in charging with non-charged state light source Putting all can be properly functioning, by switch control rule break-make.

Described adjustable Constant current output and indicating section can complete the steady output of light source drive current.Adjust resistance R7, Changing the size of light emission drive current, current value is adjustable at 10-200mA, and passes through operational amplifier under different output current Indicator lamp is made to realize that brightness changes.

Described pulsewidth modulation automatic temperature-adjusting control unit demultiplexing is in realizing constant control to light source die temperature.Utilize tube core Thermistor value of feedback carries out differential comparison to temperature, controls based on bi-directional pulse width modulation and PID, output heating or refrigeration electric current On paltie effect semiconductor, realize controlling the steady state of light source die temperature.

Described automatic temperature-adjusting control indicating section is controlled effect by buzzer and light status displays temperature.It is broadly divided into two Individual part: the instruction of die temperature state and the instruction of temperature control current size direction.Die temperature status lamp instruction die temperature is steady It is scheduled under preset temperature (generally room temperature 25 degrees Celsius), and be furnished with excessive temperature differentials emergency warning lamp and buzzer auxiliary instruction light source Abnormal condition;Temperature control current size blinker changes sign by color and brightness and flows through paltie effect semiconductor Temperature control current direction and size.Indicator lamp+buzzer scheme makes the state instruction of light source drive device succinct directly perceived, conveniently makes Use personnel.

Brief description

Fig. 1 is overall structure schematic diagram of the present invention;

Fig. 2 is lithium battery charging circuit structural representation in the present invention;

Fig. 3 is constant current driving and indicating circuit structural design drawing thereof in the present invention;

Fig. 4 is temperature compensation control circuit structural design drawing in the present invention;

Fig. 5 is to indicate the temperature-compensating indicating circuit structural design drawing whether light source normally works in the present invention;

Fig. 6 is the temperature control current indicating circuit structural design drawing in middle finger temperature indicating control size of current direction of the present invention;

Detailed description of the invention

Clearer understand the present invention in order to further, the present invention is discussed in detail with example below in conjunction with the accompanying drawings

Visible in conjunction with Fig. 1, the present invention is divided into battery power supply unit, precision constant current source circuit, constant temperature control in overall structure Circuit processed and the corresponding indicating circuit of each several part.Described battery power supply unit provides working power for other circuit;Described precision Constant-current source circuit lights the stabilized driving electric current of sense light source capsule core for providing;Described constant temperature control circuit is based on pulsewidth modulation The temperature control current of stabilized light source die temperature is provided with Feedback Design;Described light indicating circuit is taken by internal interface and amplifier Connect reflection sensing light source constant current driving, temperature control and battery charging state.

Described battery power supply unit has selected lithium battery and charging circuit scheme thereof, and lithium battery uses 18650 battery cores, nominal Voltage is that 3.7V is full of voltage 4.2V, lithium battery charging circuit connect micro-usb interface power supply adaptor charge power supply and It is electrically charged lithium battery, it is achieved control and the monitoring to lithium cell charging process.As in figure 2 it is shown, the 2 of battery management chip TP4056 Arranging resistance R3 for charging current between pin PROG2 and 1 pin temp1, under constant current charging mode, PROG2 pin is 1V Clamper is fixed, therefore can arrange maximum charging current by R3.When which is 1.2k up to maximum current 1A.Float charge voltage reaches There is provided charging complete to drag down instruction to pin during 4.2V 6 (STDBY), instruction charging when pin 7 (CHRG) drags down is carried out. D2, D3 are the green light emitting diode of dual-color red, show red led, charging complete display green in charging;C3, C4 are decoupling electricity Hold the clutter filtering charging process.The output voltage values of lithium battery is 3.7-4.2V, can other parts of direct driving circuit and The normal work of charging or uncharged lower device can be realized.

Precision constant current source circuit output indicating circuit is as it is shown on figure 3, LT3092 is internally integrated 10 stable μ A references Current source is for producing output electric current, and it is added in and can produce pressure reduction on the adjustable resistance R7 at SET pin, i.e. creates an electricity Pressure benchmark is forced to be applied to resistance R5 two ends so that the output electric current of LT3092 chip OUT pin is determined by R5, R7 ratio, is Ensure that constant current output precision both of which is required to be precision resister.Can by detection is changed to the volt-ampere-brightness of light emitting diode D1 Determining operational amplification circuit, under working condition, the luminous output driving current of following of D1 becomes big and brightens.

As shown in Figure 4, MAX1978 chip, based on pulse length modulation principle (PWM), compares Linear Control former to constant temperature control circuit Reason can reduce power consumption on the basis of equal temperature control effect, improve efficiency, more meets battery power demands.Resistance R26, Negative tempperature coefficient thermistor (NTC) on R27, R31 and sensing light source collectively constitutes electric bridge, and electric bridge output is connected to temperature control 18th, 19 pin of coremaking piece MAX1978.It is internal is differential amplifier circuit, reflects light source tube core Current Temperatures and actual sets The difference of fixed temperature.It is more than FB+, temperature control core when light source die temperature raises thermistor (NTC) resistance decrease electric bridge FB-voltage It after difference is amplified computing by piece MAX1978, is converted into temperature control current and exports to temperature control executing agency semiconductor system from the 1st, 48 pins Cooler (TEC).Semiconductor cooler (TEC) is made based on Peltier-Seebeck effect, the bigger refrigeration of the electric current passing through or heating Effect better, design maximum electric current is up to 1A.It is negative anti-that resistance R28, R32, R34 and electric capacity C11, C12, C13 collectively constitute PID It is fed back to road, by compensating the limit of controlled device semiconductor refrigerator (TEC), reach quick, stable, accurate control die temperature Purpose.LX1, LX2 pin output temperature control electric current of MAX1978, the size of current flowing through semiconductor cooler (TEC) is determined Heating or the effect of refrigeration are determined;Inductance L1, L2, in order to suppress temperature control current High-frequency Interference, prevent electric current moment excessive damage half Conductor refrigerator (TEC).12nd, 13 pins of MAX1978 are respectively used to that high temperature is out of control and the warning under low temperature runaway condition, work as pipe When core temperature is too high, 12 pins will drag down and light excess temperature emergency warning lamp, light low temperature emergency warning lamp when too low, because its warning threshold is relatively Width, will not trigger easily, so indicator lamp lights, may further confirm that light source failure.Another kind of embodiment party as the present invention Formula, excess temperature, low temperature alarm lamp can be replaced buzzer, remind user's fault under temperature control state.

In Fig. 4, the buffering isolation and amplifier BFB-of balanced bridge FB-is connected to the temperature constant state indicating circuit shown in Fig. 5, makees For the instruction input of current temperature constant state.The stable reference voltage VREF=that another road reference input is provided by MAX1978 chip 1.5V and resistance R20, R23, R30 2 reference voltages of composition.Rear stage LM393 chip forms threshold compataror circuit.Temperature When being stably bridge balance, pull-up resistor R19 drives light emitting diode D8 luminous, and instruction temperature is in stable controllable state;Work as temperature Degree is above or below a setting value such as 0.3 degree Celsius, after i.e. electric bridge imbalance causes voltage difference to exceed threshold compataror scope, LM393 output voltage will overturn, and D8 etc. goes out, and indicating circuit is not under temperature stabilization state.Upset display sensitivity can be by adjusting Whole R20, R23, R30 resistance changes high and low thresholds voltage reference value.

Temperature control current direction and size simulation indicating circuit are as shown in Figure 6.Owing to light source is in normal temperature and hot environment Under, and plus meeting spontaneous heating in luminescence process, need the temperature control current flowing through semiconductor cooler (TEC) to be refrigeration direction controlling Temperature;And when working in cold environments, there is a need to again the situation that thermal source compensates, now need to flow through semiconductor cooler (TEC) temperature control current is reverse, i.e. refrigeration direction just can stabilized light source temperature.Therefore big for instruction bidirectional current under two states Little, separately design two indicator lamps.Indication signal input is MAX1978 chip I TEC pin, R9, R13, R15, R18 conduct Reference point arranges resistance, and rear stage LM358 amplifier forms operational amplifier.ITEC pin is 1.5V under the conditions of without temperature control current Output, temperature control current becomes big for voltage during heating direction, and temperature control current diminishes for voltage during refrigeration direction, and maximum variable quantity is by In big temperature control current and Fig. 4, sensing resistor R12 together decides on.The temperature control current information that ITEC pin is exported by operation amplifier part Extract and amplify and drive LED (D4, D5) whether to light and by brightness change instruction relevant temperature control size of current, corresponding Indicator lamp brighter explanation ITEC pin voltage deviation 1.5V reference voltage is more remote, i.e. output temperature control current is bigger.

Although the present invention is open as above with embodiment, so it is not limited to the present invention, any people in the art Without departing from the spirit and scope of the present invention, when can make a little change and retouching, therefore protection scope of the present invention should for member It is as the criterion with claims.

Claims (10)

1. based on a battery powered portable optical fiber source driving means, in order to drive and to control an optical fiber source luminescence, bag Include the indicating member of battery unit, Constant current output circuit, temperature-control circuit and light source driving condition, it is characterised in that use The battery being built in device is powered.
2. light source drive device according to claim 1, it is characterised in that the optical fiber source as device driven object is Sensing or communications field super-radiance light emitting diode or semiconductor laser.
3. the battery unit of light source drive device according to claim 1, it is characterised in that described battery unit includes lithium electricity Pond and lithium battery charging management circuit.
4. light source drive device according to claim 3, it is characterised in that an external charging interface is connected to lithium battery and fills Fulgurite manages circuit, and lithium cell charging process is controlled and monitors by lithium battery charging management circuit further, can charge There is the lamplight pointing of charging complete after one-tenth.
5. the Constant current output circuit of light source drive device according to claim 1, it is characterised in that Constant current output circuit It is made up of high-precision current source, the light emission drive current of external fiber light source is provided, farther include an adjustment resistance, change and send out The size of optical drive electric current.
6. light source drive device according to claim 1, it is characterised in that temperature-control circuit is former based on pulsewidth modulation Reason, by changing the electric current pulsewidth flowing through optical fiber source internal semiconductor TEC, enters to the die temperature of optical fiber source Row high efficiency controls.
7. light source drive device according to claim 6, it is characterised in that farther include a temperature bridge detection electricity Road, the temperature information in order to gather optical fiber source tube core is converted into voltage signal input, and temperature feedback PID control Circuit, adjusts control accuracy and the control time of temperature control current.
8. light source drive device according to claim 1, it is characterised in that light source driving condition indicating member includes light source Drive work instruction, light-source temperature stable and instruction of reporting to the police, temperature control current direction and size instruction.
9. light source drive device according to claim 8, it is characterised in that light-source temperature is stable and warning indicating section leads to Cross the voltage threshold that temperature signal and the electric resistance partial pressure of electric bridge output set and compare so that it is determined that optical fiber source die temperature Controllable state, light-source temperature stably indicate process use threshold compataror circuit, the stable state of temperature passes through light-emitting diodes Instruction lighted by pipe, and the threshold ratio light-source temperature of light-source temperature warning instruction stably indicates that threshold value wants width, occurs in light source tube core temperature There is provided temperature fault timely to report to the police under degree runaway condition, prevent the damage of further light source.
10. light source drive device according to claim 8, temperature control current direction and size indicating section, its feature Be two light emitting diodes respectively only at temperature control current for lighting when positively or negatively, and with temperature control current Increase and brighten, in time the duty of the described temperature-control circuit of reflection.
CN201510859629.6A 2015-12-02 2015-12-02 Based on battery powered portable optical fiber source driving means CN106160064A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2713524Y (en) * 2004-06-25 2005-07-27 北京邮电大学 Temperature controller for Raman optical fiber amplifier
CN201549765U (en) * 2009-12-02 2010-08-11 天津光电通信技术有限公司 Semiconductor laser drive module
US20110091219A1 (en) * 2005-09-15 2011-04-21 Finisar Corporation Laser drivers for closed path optical cables
CN202734839U (en) * 2012-08-07 2013-02-13 武汉理工光科股份有限公司 Portable fiber grating wavelength demodulation instrument
CN203504813U (en) * 2013-08-30 2014-03-26 北京自动化控制设备研究所 Device capable of starting semiconductor light source at high temperature
CN204087018U (en) * 2014-06-12 2015-01-07 南京信息工程大学 Temperature control system for semiconductor laser

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2713524Y (en) * 2004-06-25 2005-07-27 北京邮电大学 Temperature controller for Raman optical fiber amplifier
US20110091219A1 (en) * 2005-09-15 2011-04-21 Finisar Corporation Laser drivers for closed path optical cables
CN201549765U (en) * 2009-12-02 2010-08-11 天津光电通信技术有限公司 Semiconductor laser drive module
CN202734839U (en) * 2012-08-07 2013-02-13 武汉理工光科股份有限公司 Portable fiber grating wavelength demodulation instrument
CN203504813U (en) * 2013-08-30 2014-03-26 北京自动化控制设备研究所 Device capable of starting semiconductor light source at high temperature
CN204087018U (en) * 2014-06-12 2015-01-07 南京信息工程大学 Temperature control system for semiconductor laser

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