CN103076827A - High-precision temperature control device within small range - Google Patents
High-precision temperature control device within small range Download PDFInfo
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- CN103076827A CN103076827A CN2012105844040A CN201210584404A CN103076827A CN 103076827 A CN103076827 A CN 103076827A CN 2012105844040 A CN2012105844040 A CN 2012105844040A CN 201210584404 A CN201210584404 A CN 201210584404A CN 103076827 A CN103076827 A CN 103076827A
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Abstract
The invention discloses a high-precision temperature control device within a small range, which comprises a temperature collection module and a temperature control module, wherein the temperature collection module is used for collecting a temperature control object, and the temperature control module is used for controlling the temperature of the temperature control object. The high-precision temperature control device is characterized in that the temperature collection module is an NTC (Negative Temperature Coefficient) thermistor, and the temperature control module comprises a PID (Proportional-Integral-Differential) controller, a TEC (Thermoelectric Cooler) driving chip and a TEC; the NTC thermistor is used for collecting the temperature of the temperature control object and then outputting the collected temperature information to the PID controller; after data processing is performed on the input temperature information and set temperature information by the PID controller, a control signal is output to the TEC driving chip by the PID controller; a temperature control signal is output to the TEC by the TEC driving chip; and the temperature control object is heated or cooled by the TEC. According to the temperature control object, through regulation of a PID circuit, the temperature within the small range is finally the same as the set temperature and is kept stable all the time, the speed of temperature control is high, and the temperature control is accurate.
Description
Technical field
The present invention relates to a kind of high-precision temperature control device for carrying out high-precision temperature control in the among a small circle space to sealing, relate in particular to a kind of among a small circle interior high-precision temperature control device.
Background technology
In view of performance, the parameter of current a lot of electronics devices and optical device has the unsettled characteristic with variation of ambient temperature, manage such as the APD in common resistance capacitance and chip and the optics, phase-modulator etc., these are subject to temperature variation and in the circuit module or system that unsettled components and parts form, bring instability will for whole system or product, can reach the temperature control that degree of precision is arranged in its place subrange to the components and parts of these easy temperature influences will be the good scheme that addresses this problem.
Summary of the invention
The object of the present invention is to provide a kind of among a small circle interior high-precision temperature control device that can realize that interior among a small circle temperature is accurately controlled.
For realizing above-mentioned technical purpose problem, the technical scheme that the present invention takes is: a kind of among a small circle interior high-precision temperature control device comprises for the temperature collect module that gathers the temperature control object, for the temperature molding piece of controlling the temperature control object temperature; It is characterized in that: described temperature collect module is the NTC thermistor, and described temperature control modules comprises that PID controller, TEC drive chip and TEC cooling piece; After described NTC thermistor collection temperature control object carries out temperature acquisition, the temperature information that gathers is exported to the PID controller, the PID controller carries out after data process the temperature information of input and the temperature information of setting, the output control signal drives chip to TEC, TEC drives chip output temperature control signal to the TEC cooling piece, and the TEC cooling piece heats the temperature control object or freezes.
As further improved technical scheme of the present invention, it is max1968 or the max8520/8521 that TEC drives chip maxim that described TEC drives chip.
The present invention finally makes interior among a small circle temperature identical with the temperature of setting by the adjusting of PID circuit, and keeps stable always, and temperature controlled speed is fast and accurate.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 PID controller architecture of the present invention synoptic diagram.
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Embodiment
Embodiment 1
Referring to Fig. 1, this is interior high-precision temperature control device among a small circle, comprises for the temperature collect module that gathers the temperature control object, for the temperature molding piece of controlling the temperature control object temperature; It is characterized in that: described temperature collect module is the NTC thermistor, and described temperature control modules comprises that PID controller, TEC drive chip and TEC cooling piece; After described NTC thermistor collection temperature control object carries out temperature acquisition, the temperature information that gathers is exported to the PID controller, the PID controller carries out after data process the temperature information of input and the temperature information of setting, the output control signal drives chip to TEC, TEC drives chip output temperature control signal to the TEC cooling piece, and the TEC cooling piece heats the temperature control object or freezes.It is max1968 or the max8520/8521 that TEC drives chip maxim that described TEC drives chip.
When originally interior high-precision temperature control device is started working among a small circle, NTC thermistor in the temp-controlling element box is voltage input PID controller with the temperature that collects by circuit conversion, the temperature transition of setting is inputted the PID controller simultaneously for corresponding voltage, PID controller output control signal enters TEC and drives chip, TEC drives chip output corresponding control electric current and direction of current is started working the TEC cooling piece that is positioned at box, heating or refrigeration, the continuous collecting temperature of thermistor, adjusting by the PID controller, finally make the temperature of whole cassette interior identical with the temperature of setting, and keep stable always.
The TEC cooling piece is also referred to as semiconductor chilling plate, compared with former temperature controller, semiconductor chilling plate has advantage specific as follows: without any need for refrigerant, but continuous working, do not have pollution source not have rotary part, can not produce gyroscopic action, do not have slide unit, shockproof during work, noise, life-span are long, install easily; Can freeze, can heat again; Be electric current transducing type device, by the control of input current, can realize high-precision temperature control, realize easily remote control, program control, computer control, be convenient to form automatic control system; The semiconductor cooler thermal inertia is very little, and the cooling and warming time is very fast; The temperature range of semiconductor cooler can be realized from-90 ℃ to+130 ℃.
Originally interior high-precision temperature control device uses the maxim family chip to be the driving chip of TEC among a small circle, and it adopts Direct Current Control, has eliminated the surge current among the TEC.It is single supply work that Maxim TEC drives chip, is connected TEC between two synchronous buck regulators output pin OS1 of chip internal and OS2, and bipolarity output can be provided.Bipolarity work can realize without " dead band " temperature control, and the nonlinear problem when having avoided the underloading electric current, and temperature-controlled precision can reach 0.01 ℃ simultaneously, thereby gets to high-precision temperature control effect.
As shown in Figure 2, the PID circuit adopts traditional PID control circuit: ratio circuit, integrating circuit and differentiating circuit.When this among a small circle in the high-precision temperature control device start working and after stablizing after a while, for example be stabilized in about 25 degree, with the PID controller part in the hair dryer alignment circuit of about 70 degree of output temperature, the change in voltage of TEMPOUT is no more than 80uV, also be that temperature variation is no more than 0.01 ℃, corresponding 0.01 ℃ of the variation of 140uV.That is to say that about 50 ℃ stable interference to this cover attemperating unit of variation of ambient temperature are very little, certainly select the better components and parts of temperature coefficient can make Systems balanth better.Originally interior high-precision temperature control device temperature-controlled precision can reach 0.01 ℃ among a small circle, and the temperature control scope can reach-90 ℃ to+130 ℃, reaches stable in 2 to 3 minutes, and has good stablizing, and is applicable to control temperature among a small circle.
Claims (2)
- One kind among a small circle in the high-precision temperature control device, comprise for the temperature collect module that gathers the temperature control object, be used for the temperature molding piece of control temperature control object temperature; It is characterized in that: described temperature collect module is the NTC thermistor, and described temperature control modules comprises that PID controller, TEC drive chip and TEC cooling piece; After described NTC thermistor collection temperature control object carries out temperature acquisition, the temperature information that gathers is exported to the PID controller, the PID controller carries out after data process the temperature information of input and the temperature information of setting, the output control signal drives chip to TEC, TEC drives chip output temperature control signal to the TEC cooling piece, and the TEC cooling piece heats the temperature control object or freezes.
- According to claim 1 among a small circle in the high-precision temperature control device, it is characterized in that: it is max1968 or the max8520/8521 that TEC drives chip maxim that described TEC drives chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105844040A CN103076827A (en) | 2012-12-30 | 2012-12-30 | High-precision temperature control device within small range |
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| CN2012105844040A CN103076827A (en) | 2012-12-30 | 2012-12-30 | High-precision temperature control device within small range |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068580A (en) * | 2015-08-31 | 2015-11-18 | 佛山市顺德区美的电热电器制造有限公司 | A temperature control system, a bread maker and a juice extractor |
| CN107845950A (en) * | 2017-12-08 | 2018-03-27 | 珠海市运泰利自动化设备有限公司 | A kind of high efficiency adds cooling system |
| CN108279719A (en) * | 2018-01-30 | 2018-07-13 | 南京林业大学 | Temprature control method and device |
| CN108445946A (en) * | 2018-04-04 | 2018-08-24 | 安徽问天量子科技股份有限公司 | The temperature self-adaptation control circuit and method of APD in quantum key dispatching system |
| CN112816093A (en) * | 2021-01-04 | 2021-05-18 | 无锡科晟光子科技有限公司 | APD module for DTS distributed temperature measurement system |
| CN114647265A (en) * | 2021-12-21 | 2022-06-21 | 北京元景科技有限公司 | High-precision temperature control system |
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| US20030033819A1 (en) * | 2001-08-10 | 2003-02-20 | Prescott Daniel C. | Current-Mode control of Thermo-Electric cooler |
| CN1453674A (en) * | 2003-05-23 | 2003-11-05 | 华中科技大学 | High-precision temperature control circuit for thermoelectric cooler |
| CN2713524Y (en) * | 2004-06-25 | 2005-07-27 | 北京邮电大学 | Temperature controller for Raman optical fiber amplifier |
| CN203164795U (en) * | 2012-12-30 | 2013-08-28 | 安徽问天量子科技股份有限公司 | High-precision temperature control device used in small area |
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2012
- 2012-12-30 CN CN2012105844040A patent/CN103076827A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030033819A1 (en) * | 2001-08-10 | 2003-02-20 | Prescott Daniel C. | Current-Mode control of Thermo-Electric cooler |
| CN1453674A (en) * | 2003-05-23 | 2003-11-05 | 华中科技大学 | High-precision temperature control circuit for thermoelectric cooler |
| CN2713524Y (en) * | 2004-06-25 | 2005-07-27 | 北京邮电大学 | Temperature controller for Raman optical fiber amplifier |
| CN203164795U (en) * | 2012-12-30 | 2013-08-28 | 安徽问天量子科技股份有限公司 | High-precision temperature control device used in small area |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068580A (en) * | 2015-08-31 | 2015-11-18 | 佛山市顺德区美的电热电器制造有限公司 | A temperature control system, a bread maker and a juice extractor |
| CN107845950A (en) * | 2017-12-08 | 2018-03-27 | 珠海市运泰利自动化设备有限公司 | A kind of high efficiency adds cooling system |
| CN107845950B (en) * | 2017-12-08 | 2024-02-13 | 珠海市运泰利自动化设备有限公司 | High-efficiency heat adding and radiating system |
| CN108279719A (en) * | 2018-01-30 | 2018-07-13 | 南京林业大学 | Temprature control method and device |
| CN108279719B (en) * | 2018-01-30 | 2020-11-17 | 南京林业大学 | Temperature control method and device |
| CN108445946A (en) * | 2018-04-04 | 2018-08-24 | 安徽问天量子科技股份有限公司 | The temperature self-adaptation control circuit and method of APD in quantum key dispatching system |
| CN112816093A (en) * | 2021-01-04 | 2021-05-18 | 无锡科晟光子科技有限公司 | APD module for DTS distributed temperature measurement system |
| CN114647265A (en) * | 2021-12-21 | 2022-06-21 | 北京元景科技有限公司 | High-precision temperature control system |
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Application publication date: 20130501 |