CN106851928A - A kind of detection means for light source driving circuit - Google Patents
A kind of detection means for light source driving circuit Download PDFInfo
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- CN106851928A CN106851928A CN201510886341.8A CN201510886341A CN106851928A CN 106851928 A CN106851928 A CN 106851928A CN 201510886341 A CN201510886341 A CN 201510886341A CN 106851928 A CN106851928 A CN 106851928A
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- Prior art keywords
- temperature
- light source
- driving circuit
- source driving
- module
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Abstract
The invention discloses a kind of detection means of light source driving circuit, wherein, including：Current detection module, the output current for detecting the light source driving circuit；Temperature adjustment module, for the temperature adjustment electric current according to the light source driving circuit, adjusts the temperature value of the temperature adjustment module, and provide the temperature value after regulation to the light source driving circuit；Temperature control modules, the temperature value for adjusting the temperature adjustment module.Detection means for light source driving circuit of the invention, is applied to the filler test of light source driving circuit, solves the problems such as existing method of testing is time-consuming, and spreadability is not strong.For the efficiency for improving detection screening light source driving circuit, manual operation is reduced, raising detection is intelligent to have practical significance.
Description
Technical field
The purpose of the present invention is a kind of automation of design, integrated aiming at light source driving circuit
Detection means, be applied to the filler test of light source driving circuit, solve current method of testing and take
When, the problems such as spreadability is not strong.For the efficiency for improving detection screening light source driving circuit, subtract
Few manual operation, improves detection intelligent with practical significance.
Background technology
Existing light source driving circuit method of testing machinery, principle are simple, but it is time-consuming to build test,
Whether pure artificial and detection circuit board manually function is normal, and simply uses the simulation such as resistance
Real load (light source), test scope is limited to, and cannot be applied to large batch of circuit board
Screening.
The content of the invention
It is an object of the invention to provide a kind of detection means for light source driving circuit, it is used for
Solve above-mentioned problem of the prior art.
A kind of detection means of light source driving circuit of the invention, wherein, including：Current detecting
Module, the output current for detecting the light source driving circuit；Temperature adjustment module, for root
According to the temperature adjustment electric current of the light source driving circuit, the temperature value of the temperature adjustment module is adjusted,
And provide the temperature value after regulation to the light source driving circuit；Temperature control modules, for adjusting
Save the temperature value of the temperature adjustment module.
One embodiment of the detection means of light source driving circuit of the invention, wherein, the electricity
Stream detection module connects the light source driving circuit for driving the port of light source, the temperature adjustment mould
Block connects the light source driving circuit for sensing the port of light-source temperature and for adjusting light source
The port of temperature.
One embodiment of the detection means of light source driving circuit of the invention, wherein, the temperature
Degree adjustment module includes：First TEC, for the temperature according to the light source driving circuit
Regulation electric current regulation temperature；Second TEC, for being adjusted according to the temperature control modules
Temperature；Temperature sensing module, for being carried to the temperature control modules and the light source driving circuit
For the temperature of the temperature adjustment module.
One embodiment of the detection means of light source driving circuit of the invention, wherein, the temperature
Degree sensing module includes：First thermistor, temperature of its resistance according to the temperature adjustment module
Change and change, the port for being used to sense light-source temperature with the light source driving circuit is connected；Second
Thermistor, is connected with temperature control modules, and the resistance of second thermistor is according to the temperature
The temperature change of adjustment module and change.
One embodiment of the detection means of light source driving circuit of the invention, wherein, this
One thermistor is negative tempperature coefficient thermistor, and the second thermistor is RTD.
One embodiment of the detection means of light source driving circuit of the invention, wherein, the temperature
Degree control module includes：Constant current source sense circuit, the output for detecting the light source driving circuit
Electric current；Temperature setting module, the temperature for setting the temperature adjustment module；Drive circuit,
For the offer driving current to the temperature adjustment module；PWM drive modules, should for basis
The signal of temperature setting module provides PWM drive signal to the drive circuit；Temperature acquisition electricity
Road, the temperature for gathering the temperature collection circuit；And main control chip, for controlling the temperature
Degree control module.
One embodiment of the detection means of light source driving circuit of the invention, wherein, also wrap
Include：Display module, is connected, with the temperature control modules for showing the current detection module
Current value, and the temperature adjustment module temperature value.
Detection means for light source driving circuit of the invention, is applied to light source driving circuit
Filler test, solves the problems such as existing method of testing is time-consuming, and spreadability is not strong.For carrying
High detection screens the efficiency of light source driving circuit, reduces manual operation, improves the intelligent tool of detection
It is of practical significance.
Brief description of the drawings
Fig. 1 show the circuit module figure of the detection means of light source driving circuit；
Fig. 2 show the schematic diagram of Constant current source sense circuit.
Specific embodiment
It is below in conjunction with the accompanying drawings and real to make the purpose of the present invention, content and advantage clearer
Example is applied, specific embodiment of the invention is described in further detail.
Fig. 1 show the circuit module figure of the detection means of light source driving circuit, as shown in figure 1,
The detection means of light source driving circuit includes：Constant current source sense circuit 5, temperature adjustment module 2,
Temperature control modules 4.
With reference to Fig. 1, Constant current source sense circuit 5, the output electricity for detecting light source driving circuit 6
Stream；Temperature adjustment module 2, for the temperature adjustment electric current according to light source driving circuit 6, regulation
The temperature value of the temperature adjustment module 2, and provide the temperature after regulation to the light source driving circuit 6
Angle value.Temperature control modules 4, the temperature value for adjusting temperature adjustment module 2.
With reference to Fig. 1, temperature adjustment module 2 includes：TEC 22, TEC 21,
Thermistor 23 and thermistor 24.Temperature control modules 4 can be a MCU.Temperature control
Module 4 connects TEC 21 by TEC drive circuits 3, and temperature control modules 4 can pass through
Its internal PWM module sends pwm signal to TEC drive circuits 3, to drive TEC 21
Regulation temperature.Temperature setting module 10 connects temperature control modules 4, for external setting-up temperature
The temperature of adjustment module 2.Thermistor 23 connects temperature control modules by temperature collection circuit 9
4, for the temperature information of temperature adjustment module 2 to be fed back into temperature control modules 4, temperature control
Module 4 adjusts TEC 21 according to feedback information.
With reference to Fig. 1, TEC 22 and thermistor 24 connect light source driving circuit respectively
6, for adjusting TEC 22 and thermistor 24 by temperature according to light source driving circuit 6
The temperature information of adjustment module 2 feeds back to light source driving circuit 6.
With reference to Fig. 1, the detection means of light source driving circuit of the present invention drives electricity mainly for light source
The function on road：Temperature control and constant-current source drive two aspects to be tested.Light source driving circuit
6 (connection light source port) LD+ is connected Constant current source sense circuit 5 with LD-, through the modulus of MCU
Modular converter, real-time detection constant-current source output size, and current electricity is shown by LCD display 1
Stream output valve.TEC+ and the TEC- end of light source driving circuit 6 are used for adjusting light source internal temperature
Port, Rt+ and Rt- senses the temperature of thermistor 24, and is used for sensing light-source temperature in practice.
With reference to Fig. 1, through the PWM module inside MCU4, thermoelectricity is controlled to adjust through TEC drive circuits 3
Refrigerator 21, is raised and lowered the internal temperature of temperature adjustment module 2, and thermistor 23 can
To use RTD Pt1000, with the internal temperature of Real-time Collection temperature adjustment module 2, through temperature
Acquisition Circuit 9 and MCU4, Current Temperatures are shown by LCD display 1.Light source driving circuit 6
Rt+ and Rt- be connected to negative tempperature coefficient thermistor 24 (negative tempperature coefficient thermistor,
At 25 DEG C, resistance is 10K Ω), TEC+ and TEC- is connected to TEC 22, if light source drives
The temperature control modules of dynamic circuit 6 are working properly, and the resistance for detecting thermistor 24 is not 10
During K Ω, then TEC 22 can be driven, make the reduction of the temperature of temperature adjustment module 2 or raise,
Finally internal temperature is set to reach 25 DEG C.
Fig. 2 show the schematic diagram of Constant current source sense circuit, with reference to Fig. 1 and Fig. 2, illustrates this
The operation principle of the detection means of invention light source driving circuit,
The constant-current source output detection of light source driving circuit, including：
What the LD+ and LD- of actual light source drive circuit 6 were connected is the internal illumination pipe of SLD light sources
Core, to the current value that tube core is constant so that light source sends the light of corresponding luminous power and wavelength.
Constant current source sense circuit 5 makes to constitute closed-loop path between LD+ and LD-, such as can be
One high-power resistance, constant electric current is constituted with constant-current source and closed back by high-power resistance
Road.By the magnitude of voltage at monitoring resistor two ends, you can obtain the current value now by the resistance.
MCU drives display, display current value size now.
Also high-power resistance R resistance sizes can be changed, the situation in load change in resistance is judged
Under, whether the output of constant-current source stablizes.
The temperature control modules Function detection of light source driving circuit, including：
Temperature setting module 10 can be made up of bridge circuit and slide rheostat, by partial pressure
Mode, change is input to the numerical values recited in MCU4, so as to change pulse width modulation module (PWM
Module) output account for ratio wide, drive 3 TECs 21 to heat or freeze through TEC drive circuits
Change the internal temperature of temperature adjustment module 2, the temperature inside detection temperature adjustment module 2, through temperature
The inside temperature of degree Acquisition Circuit and 9MCU and the real-time displays temperature adjustment module 2 of LCD display 1
Degree.
After light source driving circuit 6 is connected, Rt+ and Rt- the detection negative temperature of light source driving circuit 6
The resistance (resistance reflection temperature adjustment module internal temperature) of coefficient resistance 24, through light
The closed loop thermal control module 4 of the inside of source driving circuit 6, exports TEC electric currents, controls thermoelectricity
Refrigerator 22, by TEC 22 and the collective effect of TEC 21, by temperature adjustment
The internal temperature control of module 2 is in predetermined value.
Detection means for light source driving circuit of the invention, is applied to light source driving circuit
Filler test, solves the problems such as existing method of testing is time-consuming, and spreadability is not strong.For carrying
High detection screens the efficiency of light source driving circuit, reduces manual operation, improves the intelligent tool of detection
It is of practical significance.
The above is only the preferred embodiment of the present invention, it is noted that led for this technology
For the those of ordinary skill in domain, on the premise of the technology of the present invention principle is not departed from, can be with
Some improvement and deformation are made, these are improved and deformation also should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of detection means of light source driving circuit, it is characterised in that including：
Current detection module, the output current for detecting the light source driving circuit；
Temperature adjustment module, for the temperature adjustment electric current according to the light source driving circuit, regulation
The temperature value of the temperature adjustment module, and provide the temperature after regulation to the light source driving circuit
Value；
Temperature control modules, the temperature value for adjusting the temperature adjustment module.
2. the detection means of light source driving circuit as claimed in claim 1, it is characterised in that
The current detection module connects the light source driving circuit for driving the port of light source, and the temperature is adjusted
Section module connects the light source driving circuit for sensing the port of light-source temperature and for adjusting
The port of light-source temperature.
3. the detection means of light source driving circuit as claimed in claim 1, it is characterised in that
The temperature adjustment module includes：
First TEC, for being adjusted according to the temperature adjustment electric current of the light source driving circuit
Temperature；
Second TEC, for adjusting temperature according to the temperature control modules；
Temperature sensing module, for being provided to the temperature control modules and the light source driving circuit
The temperature of the temperature adjustment module.
4. the detection means of light source driving circuit as claimed in claim 3, it is characterised in that
The temperature sensing module includes：
First thermistor, its resistance changes according to the temperature change of the temperature adjustment module,
The port for being used to sense light-source temperature with the light source driving circuit is connected；
Second thermistor, is connected with temperature control modules, the resistance root of second thermistor
Change according to the temperature change of the temperature adjustment module.
5. the detection means of light source driving circuit as claimed in claim 4, it is characterised in that
First thermistor is negative tempperature coefficient thermistor, and the second thermistor is RTD.
6. the detection means of light source driving circuit as claimed in claim 1, it is characterised in that
The temperature control modules include：
Constant current source sense circuit, the output current for detecting the light source driving circuit；
Temperature setting module, the temperature for setting the temperature adjustment module；
Drive circuit, for the offer driving current to the temperature adjustment module；
PWM drive modules, carry for the signal according to the temperature setting module to the drive circuit
For PWM drive signal；
Temperature collection circuit, the temperature for gathering the temperature collection circuit；And
Main control chip, for controlling the temperature control modules.
7. the detection means of light source driving circuit as claimed in claim 6, it is characterised in that
Also include：
Display module, is connected, with the temperature control modules for showing the current detection module
Current value, and the temperature adjustment module temperature value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510886341.8A CN106851928A (en) | 2015-12-04 | 2015-12-04 | A kind of detection means for light source driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510886341.8A CN106851928A (en) | 2015-12-04 | 2015-12-04 | A kind of detection means for light source driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106851928A true CN106851928A (en) | 2017-06-13 |
Family
ID=59150929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510886341.8A Pending CN106851928A (en) | 2015-12-04 | 2015-12-04 | A kind of detection means for light source driving circuit |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1922522A (en) * | 2004-02-21 | 2007-02-28 | 菲尼萨公司 | Power optimization for operation of optoelectronic device with thermoelectric cooler |
| JP2011134468A (en) * | 2009-12-22 | 2011-07-07 | Yamagata Promotional Organization For Industrial Technology | Constant power driving device of organic el panel |
| CN202103892U (en) * | 2011-03-16 | 2012-01-04 | 上海致达智利达系统控制有限责任公司 | Driving power supply for LED street lamp |
| CN102364405A (en) * | 2011-09-29 | 2012-02-29 | 北京航空航天大学 | Device for detecting temperature control property of light source driving circuit |
| CN103052213A (en) * | 2012-11-30 | 2013-04-17 | 无锡中铂电子有限公司 | Circuit structure for controlling temperature rise of LED (Light-Emitting Diode) |
| CN203690702U (en) * | 2013-11-08 | 2014-07-02 | 青岛黄海学院 | Laser tube driving circuit for infrared sensor |
-
2015
- 2015-12-04 CN CN201510886341.8A patent/CN106851928A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1922522A (en) * | 2004-02-21 | 2007-02-28 | 菲尼萨公司 | Power optimization for operation of optoelectronic device with thermoelectric cooler |
| JP2011134468A (en) * | 2009-12-22 | 2011-07-07 | Yamagata Promotional Organization For Industrial Technology | Constant power driving device of organic el panel |
| CN202103892U (en) * | 2011-03-16 | 2012-01-04 | 上海致达智利达系统控制有限责任公司 | Driving power supply for LED street lamp |
| CN102364405A (en) * | 2011-09-29 | 2012-02-29 | 北京航空航天大学 | Device for detecting temperature control property of light source driving circuit |
| CN103052213A (en) * | 2012-11-30 | 2013-04-17 | 无锡中铂电子有限公司 | Circuit structure for controlling temperature rise of LED (Light-Emitting Diode) |
| CN203690702U (en) * | 2013-11-08 | 2014-07-02 | 青岛黄海学院 | Laser tube driving circuit for infrared sensor |
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Application publication date: 20170613 |
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