CN102519167A - Linear thermoelectric cooler (TEC) driving circuit - Google Patents
Linear thermoelectric cooler (TEC) driving circuit Download PDFInfo
- Publication number
- CN102519167A CN102519167A CN2011104282427A CN201110428242A CN102519167A CN 102519167 A CN102519167 A CN 102519167A CN 2011104282427 A CN2011104282427 A CN 2011104282427A CN 201110428242 A CN201110428242 A CN 201110428242A CN 102519167 A CN102519167 A CN 102519167A
- Authority
- CN
- China
- Prior art keywords
- tec
- current source
- thermistor
- linear
- voltage
- 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.)
- Pending
Links
Images
Landscapes
- Semiconductor Lasers (AREA)
Abstract
The invention belongs to the precise photoelectric detection technology, and particularly relates to a linear thermoelectric cooler (TEC) driving circuit, which comprises a thermistor with resistance changing along with temperature and a constant current source circuit supplying constant current source to the thermisotr. Voltage sampled signals of the thermistor are output to a voltage-controlled current source circuit, and a power source output of the voltage-controlled current source circuit is connected with a TEC element. The linear thermoelectric cooler TEC driving circuit can convert temperature changing signals into control signals through the thermistor according to temperature changing so as to perform linear driving on the TEC element. The linear TEC driving circuit is simple in structure, good in stability and low in cost.
Description
Technical field
This invention belongs to accurate photoelectric detecting technology, is specifically related to a kind of linear TEC drive circuit.
Background technology
LD (laser diode) is because its wave-length coverage is wide, it is simple to make, cost is low, be easy to a large amount of productions; And volume is little, in light weight, the life-span is long; Thereby the kind development is fast; Surpass 300 kinds at present, range of application has covered the overall optical person in electronics, becomes the core technology of current photoelectron science; Be widely used in fields such as laser ranging, laser radar, laser communication, laser analog weapon, laser warning, laser guidance tracking, ignition and blasting, control automatically, detecting instrument, and formed vast market.
The LD shortcoming is that the output characteristics temperature influence is very big; Rising along with temperature; Need more carrier and inject and keep required population inversion, the threshold current of LD raises, and this can cause the energy conversion efficiency of LD to reduce; Convert electrical energy into heat energy, emission wavelength is also along with variation of temperature is drifted about.If LD can not fast and effeciently freeze, then appearance can not influence its output characteristics, even can damage LD.
In order to guarantee that LD has long working life, must take ATC (automatic temperature-adjusting control) measure, keep the temperature of LD operate as normal through control LD die temperature.General ATC adopts semiconductor TEC (TEC) to control temperature.TEC is a kind of small-sized heat pump that does not have motion parts, is often applied to the occasion of space finite sum high reliability.The function of TEC realizes depending on the direction of supply current, realizes heating or freezing through changing the sense of current.The general special chip (like MAX1968 etc.) that adopts is controlled the ATC that TEC realizes LD.But the special chip price is high, and delivery cycle is long, is unfavorable for the market competition of product.
Summary of the invention
Technical problem to be solved by this invention is, but a kind of drive current linear regulation, circuit structure is simple, cost is low linear TEC drive circuit are provided.
Linear TEC drive circuit of the present invention includes a temperature variant thermistor of resistance and the constant-current source circuit that constant-current source is provided for thermistor; The voltage sampling signal of said thermistor outputs in the voltage controlled current source circuit, and the power output end of said voltage controlled current source circuit connects the TEC element.
The present invention can be converted into control signal with the variations in temperature signal through thermistor, makes drive circuit carry out Linear Driving to the TEC element according to variation of temperature, and its circuit structure is simple, good stability, cost are low.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is the thermistor of the embodiment of the invention and the circuit diagram of constant-current source circuit;
Fig. 3 is the voltage controlled current source circuit of the embodiment of the invention and the circuit diagram of TEC element.
The specific embodiment
As shown in Figure 1; This circuit includes a temperature variant thermistor of resistance and the constant-current source circuit that constant-current source is provided for thermistor; The voltage sampling signal of thermistor outputs in the voltage controlled current source circuit, and the power output end of voltage controlled current source circuit connects the TEC element.
As shown in Figure 2, constant-current source circuit comprises a three-terminal voltage-stabilizing chip LM317, and power supply outputs to thermistor RT through three-terminal voltage-stabilizing chip LM317, and when variations in temperature caused the thermistor change in resistance, the voltage signal Vout of thermistor input changed.
As shown in Figure 3; The voltage controlled current source circuit comprises a high input impedance operational amplifier OPA117; The voltage signal Vout that is produced by Fig. 2 circuit converts the input voltage Uin of OPA117 into, and the signal of voltage variety is sent into high-speed buffer BUF346 after high input impedance operational amplifier OPA117 isolates; Convert the voltage-controlled current source output current to, drive the work of TEC element.
Claims (1)
1. linear TEC drive circuit; It is characterized in that: it includes a temperature variant thermistor of resistance and the constant-current source circuit that constant-current source is provided for thermistor; The voltage sampling signal of said thermistor outputs in the voltage controlled current source circuit, and the power output end of said voltage controlled current source circuit connects the TEC element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104282427A CN102519167A (en) | 2011-12-20 | 2011-12-20 | Linear thermoelectric cooler (TEC) driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104282427A CN102519167A (en) | 2011-12-20 | 2011-12-20 | Linear thermoelectric cooler (TEC) driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102519167A true CN102519167A (en) | 2012-06-27 |
Family
ID=46290178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104282427A Pending CN102519167A (en) | 2011-12-20 | 2011-12-20 | Linear thermoelectric cooler (TEC) driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102519167A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050884A (en) * | 2012-12-28 | 2013-04-17 | 北京航天易联科技发展有限公司 | Driving method of laser tube core semiconductor refrigerator |
| CN109238495A (en) * | 2018-09-07 | 2019-01-18 | 郑明明 | Temperature sensing circuit and temperature checking method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020073716A1 (en) * | 2000-12-19 | 2002-06-20 | William Melaragni | Thermoelectric cooler temperature control |
| US20080047278A1 (en) * | 2006-02-10 | 2008-02-28 | Finisar Corporation | Thermoelectric cooler with inrush current control |
| CN101201636A (en) * | 2007-07-27 | 2008-06-18 | 吉林大学 | High-stability thermostatic controller |
| CN101540474A (en) * | 2009-04-07 | 2009-09-23 | 吉林大学 | Thermostatic controller of digital semiconductor laser |
| CN201549765U (en) * | 2009-12-02 | 2010-08-11 | 天津光电通信技术有限公司 | Semiconductor laser drive module |
| CN101950186A (en) * | 2010-09-02 | 2011-01-19 | 吉林大学 | Limited thermostat controller with wide voltage consumption based on thermoelectric refrigerating unit |
| CN201945902U (en) * | 2010-12-29 | 2011-08-24 | 中国科学院西安光学精密机械研究所 | Constant current source drive circuit and semiconductor refrigerator control system |
-
2011
- 2011-12-20 CN CN2011104282427A patent/CN102519167A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020073716A1 (en) * | 2000-12-19 | 2002-06-20 | William Melaragni | Thermoelectric cooler temperature control |
| US20080047278A1 (en) * | 2006-02-10 | 2008-02-28 | Finisar Corporation | Thermoelectric cooler with inrush current control |
| CN101201636A (en) * | 2007-07-27 | 2008-06-18 | 吉林大学 | High-stability thermostatic controller |
| CN101540474A (en) * | 2009-04-07 | 2009-09-23 | 吉林大学 | Thermostatic controller of digital semiconductor laser |
| CN201549765U (en) * | 2009-12-02 | 2010-08-11 | 天津光电通信技术有限公司 | Semiconductor laser drive module |
| CN101950186A (en) * | 2010-09-02 | 2011-01-19 | 吉林大学 | Limited thermostat controller with wide voltage consumption based on thermoelectric refrigerating unit |
| CN201945902U (en) * | 2010-12-29 | 2011-08-24 | 中国科学院西安光学精密机械研究所 | Constant current source drive circuit and semiconductor refrigerator control system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050884A (en) * | 2012-12-28 | 2013-04-17 | 北京航天易联科技发展有限公司 | Driving method of laser tube core semiconductor refrigerator |
| CN109238495A (en) * | 2018-09-07 | 2019-01-18 | 郑明明 | Temperature sensing circuit and temperature checking method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104201563B (en) | A kind of semiconductor laser constant-power control circuit and working method | |
| CN203338172U (en) | Semiconductor laser constant current drive and temperature control system | |
| CN103368051A (en) | Semiconductor laser driving system used for fiber laser pump | |
| CN201549765U (en) | Semiconductor laser drive module | |
| CN102290705A (en) | High-reliability constant voltage mode semiconductor laser driver with continuously adjustable output light power | |
| CN104993873A (en) | Optical module | |
| CN102340350B (en) | DDMI (digital diagnostic monitoring interface) optical module transmitter circuit and optical power monitoring method for same | |
| CN205159790U (en) | Colliery is semiconductor laser's temperature control system in optic fibre temperature measurement in pit | |
| CN202373563U (en) | Temperature-controllable avalanche photodiode assembly | |
| CN104298278A (en) | Laser device temperature control system based on photodiode (PD) | |
| CN102778906B (en) | Dual-stage thermostatical control semiconductor laser | |
| CN102519167A (en) | Linear thermoelectric cooler (TEC) driving circuit | |
| CN204886979U (en) | Emission of light time subassembly suitable for industrial grade temperature range | |
| CN102957089B (en) | Drive circuit of coaxial pigtail laser | |
| CN105094173A (en) | Semiconductor laser device temperature control system and control method thereof | |
| CN104345750A (en) | Semiconductor laser constant current driving and temperature control system | |
| CN204128541U (en) | Miniature laser range finder | |
| CN103236644B (en) | Regulate method and the device of small package hot-pluggable optical module working temperature | |
| CN102630114A (en) | Closed-loop control LED (Light Emitting Diode) constant-current driving circuit | |
| CN202930744U (en) | Drive circuit for coaxial tail fiber type laser | |
| CN201766570U (en) | Passive 4-20 mA signal isolation receiving circuit based on linear photo coupler | |
| CN203826767U (en) | Drive and control circuit of semiconductor laser | |
| CN202712682U (en) | Two-stage thermostatic control semiconductor laser | |
| CN102455717A (en) | Laser diode (LD) automatic temperature control device based on MAX1968 | |
| CN208999860U (en) | A kind of semiconductor laser optical power steady control loop |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120627 |