CN205644317U - Laser temperature control circuit - Google Patents
Laser temperature control circuit Download PDFInfo
- Publication number
- CN205644317U CN205644317U CN201620262852.2U CN201620262852U CN205644317U CN 205644317 U CN205644317 U CN 205644317U CN 201620262852 U CN201620262852 U CN 201620262852U CN 205644317 U CN205644317 U CN 205644317U
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- CN
- China
- Prior art keywords
- amplifier
- control circuit
- temperature control
- laser
- temperature
- 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.)
- Expired - Fee Related
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- Semiconductor Lasers (AREA)
Abstract
The utility model provides a laser temperature control circuit. Laser temperature control circuit includes temperature sensor and control with the heat sink conductive contact's of laser instrument freezer, monitoring environment temperature or laser instrument temperature variation freezer operating condition's amplifier circuit, amplifier circuit respectively with temperature sensor with the freezer electricity is connected. The utility model has the advantages of laser temperature control circuit expert can so that the temperature steady of laser instrument is at certain within range.
Description
Technical field
This utility model belongs to temperature controlled technical field, controls electricity more particularly to a kind of laser temperature
Road.
Background technology
Semiconductor laser is high with its efficiency, volume is little, lightweight, lower-price characteristic is military, doctor
The fields such as treatment, communication play the effect that can not be substituted.Owing to needing to keep high steady during this type of laser works
Fixed temperature constant state guarantees its output and wavelength, makes laser instrument more stable.So design height collection
Cheng Du, volume are little, the temperature control system of high stability becomes problem demanding prompt solution.
But, change owing to the threshold current of semiconductor laser varies with temperature, and the most sensitive,
Particularly long wavelength is more so.Therefore, in order to ensure that laser instrument has more stable duty, i.e. threshold current
Constant, Output optical power is constant, it is necessary to the operating temperature making laser instrument is the most stable.
It is necessary to propose a kind of laser temperature control circuit that can ensure that temperature stabilization within the specific limits.
Utility model content
The purpose of this utility model is to provide a kind of laser instrument that can ensure that temperature stabilization within the specific limits
Temperature-control circuit.
The technical solution of the utility model is as follows: a kind of laser temperature control circuit includes the heat with laser instrument
The heavy refrigerator of thermal conductive contact, monitoring of environmental temperature or the temperature sensor of laser temperature change and control institute
State the amplifying circuit of refrigerator duty, described amplifying circuit respectively with described temperature sensor and described cause
Cooler electrically connects.
Preferably, described amplifying circuit includes amplifier and the power amplifier being sequentially connected electrically, described amplification
The outfan of device electrically connects with described power amplifier.
Preferably, described power amplifier is NPN type triode, and the base stage of described power amplifier and institute
Stating the outfan electrical connection of amplifier, the emitter stage of described power amplifier electrically connects with described refrigerator, institute
The colelctor electrode stating power amplifier accesses 12V voltage.
Preferably, 12V voltage is accessed with rheostat after the colelctor electrode of described power amplifier concatenates.
Preferably, the inverting input of described amplifier electrically connects with described temperature sensor, described amplifier
In-phase input end ground connection.
Preferably, described temperature sensor includes power supply terminal, lead-out terminal and ground terminal, described power supply
Terminal accesses power supply, and described lead-out terminal electrically connects with the inverting input of described amplifier, described earth terminal
Sub-ground connection.
Preferably, ground connection after the in-phase input end of described amplifier and the first resistance concatenation, described amplifier
Between inverting input and outfan and connect the second resistance.
Preferably, the resistance value of described first resistance and described second resistance is equal.
The beneficial effects of the utility model are: described laser temperature control circuit is by described temperature sensing
Device detects described laser instrument or the variations in temperature of environment, and described variations in temperature is changed into the signal of telecommunication, then
After described amplifying circuit processes, it is sent to described refrigerator, thus controls the duty of described refrigerator,
And then make the temperature stabilization of described laser instrument in certain scope.
Accompanying drawing explanation
Fig. 1 is the structural representation of the laser temperature control circuit that this utility model embodiment provides.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And embodiment, this utility model is further elaborated.Should be appreciated that described herein specifically
Embodiment, only in order to explain this utility model, is not used to limit this utility model.
The description of specific distinct unless the context otherwise, the element in this utility model and assembly, quantity both may be used
Presented in single, it is also possible to presented in multiple, this is not defined by this utility model.
It is appreciated that term "and/or" used herein relates to and contain the one in the Listed Items being associated
Or one or more of any and all possible combination.
Refer to Fig. 1, be the structural representation of the laser temperature control circuit that this utility model embodiment provides
Figure.The laser temperature control circuit 100 that this utility model provides includes the heat sink heat conduction with laser instrument 200
Refrigerator 10, monitoring of environmental temperature or the temperature sensor 20 of laser instrument 200 variations in temperature of contact and control
The amplifying circuit 30 of described refrigerator 10 duty, described amplifying circuit 30 respectively with described temperature sensing
Device 20 and described refrigerator 10 electrically connect.
Described refrigerator 10 is for regulating the heat sink temperature of described laser instrument 200, thus prevents described laser
The temperature of device 200 is too high.In the present embodiment, described refrigerator 10 is TEC conductor temperature controller.
Preferably, the rated voltage of described refrigerator 10 is DC12V, and maximum refrigeration work consumption is 7.8W.
Described temperature sensor 20 can be with monitoring of environmental temperature or laser instrument 200 variations in temperature, and by described temperature
Degree change transitions is that the signal of telecommunication is sent to described amplifying circuit 30.In the present embodiment, described temperature sensor
20 is the sensor that output voltage is linear with Celsius scale.Such as: when 0 DEG C, described temperature passes
Sensor 20 is output as 0V；Temperature often raises 1 DEG C, and described temperature sensor 20 output voltage increases 10mV.
And, described temperature sensor 20 includes power supply terminal, lead-out terminal and ground terminal, described power supply
Terminal accesses power supply, and described lead-out terminal electrically connects with described amplifying circuit 30, described ground terminal ground.
Selectively, described power supply terminal accesses the power supply of 12V.
Described amplifying circuit 30 is for being amplified the signal of telecommunication that described temperature sensor 20 sends at enhancing
Reason, and the signal of telecommunication after processing sends to described refrigerator 10.In the present embodiment, described amplifying circuit
30 include amplifier 31 and the power amplifier 32 being sequentially connected electrically.
Wherein, described amplifier 31 is the operational amplifier of high-performance low-noise, and it receives and amplifies described temperature
The signal of telecommunication that degree sensor 20 sends.Specifically, the inverting input of described amplifier 31 and described temperature
Sensor 20 electrically connects, and the in-phase input end ground connection of described amplifier 31, the output of described amplifier 31
End electrically connects with described power amplifier 32.
Further, ground connection after the in-phase input end of described amplifier 31 and the first resistance 40 concatenation is described
Between inverting input and the outfan of amplifier 31 and connect the second resistance 50.Preferably, described first resistance
40 and the resistance value of described second resistance 50 equal, both at 100K Ω.
In the present embodiment, the signal of telecommunication that described temperature sensor 20 is produced passes through described inverting input
Input is amplified processing to described amplifier 31.
Described power amplifier 32 is NPN audion, and it is received described amplifier 31 and is sent by outfan
The signal of telecommunication, and the described signal of telecommunication is carried out power amplification process.Specifically, described power amplifier 32
Base stage electrically connects with the outfan of described amplifier 31, the emitter stage of described power amplifier 32 and described cause
Cooler 10 electrically connects, and the colelctor electrode of described power amplifier 32 accesses 12V voltage.Selectively, described
The colelctor electrode of power amplifier 32 accesses 12V voltage after concatenating with rheostat 60.And, described can
Variohm 60 can regulate the operating current of described refrigerator 10 by regulation resistance.
In the present embodiment, the signal of telecommunication that described amplifier 31 sends is carried out merit by described power amplifier 32
After rate processing and amplifying, it is sent to described refrigerator 10, and controls described refrigerator 10 by the described signal of telecommunication
Refrigeration.
When described laser temperature control circuit 100 works, if described laser instrument 200 is at normal temperature
The most under debugging mode, described laser temperature control circuit 100 provides constant for described refrigerator 10
Voltage or electric current, the heat sink temperature of the most described laser instrument 200 keeps constant.
If the heat sink temperature of described laser instrument 200 raises, 20 heat sink temperatures of described temperature sensor become
Change the change being changed into electricity, and export the corresponding signal of telecommunication to described amplifying circuit 30；Described amplification electricity
Road 30 is amplified enhancement process by described amplifier 31 and described power amplifier 32 to the described signal of telecommunication
After, and by the described signal of telecommunication, described refrigerator 10 input power being increased, coldface temperature declines, and then
The heat sink temperature controlling described laser instrument 200 declines and returns to original operating temperature.
Compared to prior art, the laser temperature control circuit 100 that this utility model provides is by described temperature
Degree sensor 20 detects described laser instrument 200 or the variations in temperature of environment, and described variations in temperature is changed into
The signal of telecommunication, is then passed through after described amplifying circuit 30 processes being sent to described refrigerator 10, thus controls described
The duty of refrigerator 10, and then make the temperature stabilization of described laser instrument 200 in certain scope.
It is obvious to a person skilled in the art that this utility model is not limited to the thin of above-mentioned one exemplary embodiment
Joint, and in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to concrete with other
Form realizes this utility model.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary
, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above
It is fixed, it is intended that all changes fallen in the implication of equivalency and scope of claim are included at this
In utility model.Should not be considered as limiting involved claim by any reference in claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, but the most each enforcement
Mode only comprises an independent technical scheme, and this narrating mode of description is only for clarity sake,
Those skilled in the art should be using description as an entirety, and the technical scheme in each embodiment can also be through
Appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (8)
1. a laser temperature control circuit, it is characterised in that: include the heat sink thermal conductive contact with laser instrument
Refrigerator, monitoring of environmental temperature or the temperature sensor of laser temperature change and control described refrigerator work
Making the amplifying circuit of state, described amplifying circuit electrically connects with described temperature sensor and described refrigerator respectively.
Laser temperature control circuit the most according to claim 1, it is characterised in that: described amplification electricity
Road includes amplifier and the power amplifier being sequentially connected electrically, and the outfan of described amplifier is put with described power
Big device electrical connection.
Laser temperature control circuit the most according to claim 2, it is characterised in that: described power is put
Big device is NPN type triode, and the base stage of described power amplifier electrically connects with the outfan of described amplifier,
The emitter stage of described power amplifier electrically connects with described refrigerator, and the colelctor electrode of described power amplifier accesses
12V voltage.
Laser temperature control circuit the most according to claim 3, it is characterised in that: described power is put
The colelctor electrode of big device accesses 12V voltage after concatenating with rheostat.
Laser temperature control circuit the most according to claim 2, it is characterised in that: described amplifier
Inverting input electrically connect with described temperature sensor, the in-phase input end ground connection of described amplifier.
Laser temperature control circuit the most according to claim 5, it is characterised in that: described temperature passes
Sensor includes power supply terminal, lead-out terminal and ground terminal, and described power supply terminal accesses power supply, described output
Terminal electrically connects with the inverting input of described amplifier, described ground terminal ground.
Laser temperature control circuit the most according to claim 5, it is characterised in that: described amplifier
In-phase input end and the first resistance concatenation after ground connection, between inverting input and the outfan of described amplifier
And connect the second resistance.
Laser temperature control circuit the most according to claim 7, it is characterised in that: described first electricity
The resistance value of resistance and described second resistance is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620262852.2U CN205644317U (en) | 2016-03-31 | 2016-03-31 | Laser temperature control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620262852.2U CN205644317U (en) | 2016-03-31 | 2016-03-31 | Laser temperature control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205644317U true CN205644317U (en) | 2016-10-12 |
Family
ID=57066142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620262852.2U Expired - Fee Related CN205644317U (en) | 2016-03-31 | 2016-03-31 | Laser temperature control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205644317U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652918A (en) * | 2016-03-31 | 2016-06-08 | 南京铁道职业技术学院 | Laser temperature control circuit |
-
2016
- 2016-03-31 CN CN201620262852.2U patent/CN205644317U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652918A (en) * | 2016-03-31 | 2016-06-08 | 南京铁道职业技术学院 | Laser temperature control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20170331 |