CN203689185U - Laser temperature control system - Google Patents

Laser temperature control system Download PDF

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Publication number
CN203689185U
CN203689185U CN201420002508.0U CN201420002508U CN203689185U CN 203689185 U CN203689185 U CN 203689185U CN 201420002508 U CN201420002508 U CN 201420002508U CN 203689185 U CN203689185 U CN 203689185U
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CN
China
Prior art keywords
temperature
module
voltage
temperature control
operational amplifier
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
Application number
CN201420002508.0U
Other languages
Chinese (zh)
Inventor
欧伟
石学泽
李家超
张大为
王玉鲁
韩涛
陈彦民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SINOLASER PROJECTION TECHNOLOGY CO., LTD.
Original Assignee
Shenzhen Aurora Centrix Technology Ltd
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Publication date
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Priority to CN201420002508.0U priority Critical patent/CN203689185U/en
Application granted granted Critical
Publication of CN203689185U publication Critical patent/CN203689185U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a laser temperature control system which comprises a temperature setting module, a temperature acquisition module, an operational amplifier comparison module and a refrigeration module. The temperature setting module outputs temperature setting voltage according to a set temperature value. The temperature acquisition module acquires the temperature of the refrigeration module and outputs temperature acquisition voltage. The temperature setting voltage and the temperature acquisition voltage are sent to the operational amplifier comparison module. The operational amplifier comparison module amplifies the different between the temperature setting voltage and the temperature acquisition voltage and outputs temperature control voltage. The temperature control voltage is sent to the refrigeration module. Through the technical scheme, the accuracy of temperature control can be improved, and problems of large temperature fluctuation and system instability are reduced.

Description

A kind of laser temperature control system
Technical field
The utility model relates to a kind of temperature control system, particularly a kind of to the strict control system of temperature control requirement, is specially the temperature control system of laser instrument.
Background technology
Laser instrument time can produce higher temperature in work, and too high temperature will cause damage to laser instrument, so must carry out high-precision temperature control to laser instrument, guarantees that with this laser instrument can normally work.Temperature controller on existing market all adopts single-chip microcomputer or DSP feedback output temperature control signal, but because the reaction time of single-chip microcomputer or DSP exists delay, thereby make the temperature control hysteresis of laser instrument, temperature fluctuation amplitude large, affected the steady operation of laser instrument.And single-chip microcomputer or DSP ratio be easier to crash, in the time of above-mentioned device fault, temperature control system is complete failure, thereby laser instrument is damaged because of overheated.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of laser temperature control system, and the temperature control precision of this system is high, can effectively reduce temperature fluctuation greatly and the unsettled problem of system.
For addressing the above problem, the technical scheme that the utility model adopts is as follows:
A kind of laser temperature control system, comprise Temperature Setting module, temperature collect module and refrigeration module, also comprise amplifier comparison module, described Temperature Setting module is according to the temperature value output temperature setting voltage of setting, temperature output temperature that described temperature collect module gathers refrigeration module gather voltage, and this Temperature Setting voltage and temperature acquisition voltage are delivered to amplifier comparison module; Described amplifier comparison module amplifies the difference of Temperature Setting voltage and temperature acquisition voltage output temperature control voltage, and this temperature control voltage is delivered to refrigeration module, and refrigeration module freezes according to temperature control voltage.
Preferably, described amplifier comparison module comprises operational amplifier and potentiometer, and described potentiometer is connected with two input ends of operational amplifier, and this potentiometer is for regulating the enlargement factor of Temperature Setting voltage and temperature acquisition voltage difference.
Preferably, described Temperature Setting module comprises digital control resistance-variable device, and digital control resistance-variable device is connected with the in-phase input end of operational amplifier.
Preferably, described amplifier comparison module comprises driving circuit, and input end, the output terminal of driving circuit are connected with operational amplifier output terminal, refrigeration module respectively.
Preferably, described refrigeration module comprises semiconductor chilling plate, and semiconductor chilling plate is provided with temperature sensor, and this temperature sensor is connected with temperature collect module, and temperature collect module is connected with the inverting input of operational amplifier.
Compared to existing technology, the beneficial effects of the utility model are:
Because existing temperature control system adopts single-chip microcomputer or DSP etc. to carry out software feedback, and the problem that software feedback ubiquity read-write program postpones, read-write program crashes, thereby there is the large or uncontrollable problem of temperature of temperature control hysteresis, temperature fluctuation amplitude.For addressing the above problem, the utility model adopts amplifier comparison module that the difference of Temperature Setting voltage and temperature acquisition voltage is amplified and output temperature control voltage, this temperature control voltage is delivered to refrigeration module, refrigeration module freezes according to temperature control voltage, because above-mentioned amplifier comparison module is hardware Real-time Feedback, do not need to carry out read-write program, not only simplified the structure of laser temperature control system, also improved feedback time and the stability of laser temperature control system.Especially, set up potentiometer in preferred version, this potentiometer, for regulating the enlargement factor of Temperature Setting voltage and temperature acquisition voltage difference, makes the regulation and control of laser temperature control system more accurate.
Accompanying drawing explanation
Fig. 1 is module diagram of the present utility model;
Fig. 2 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is module diagram of the present utility model, from this figure, laser temperature control system described in the utility model is mainly made up of four modules, comprise Temperature Setting module 1, temperature collect module 2, amplifier comparison module 3 and refrigeration module 4, described Temperature Setting module 1 is according to the temperature value output temperature setting voltage of setting, temperature output temperature that described temperature collect module 2 gathers refrigeration module 4 gather voltage, and this Temperature Setting voltage and temperature acquisition voltage are delivered to amplifier comparison module 3; Described amplifier comparison module 3 amplifies the difference of Temperature Setting voltage and temperature acquisition voltage output temperature control voltage, and this temperature control voltage is delivered to refrigeration module 4, and refrigeration module 4 freezes according to temperature control voltage.Wherein, described amplifier comparison module 3 comprises operational amplifier 31 and driving circuit 32, described refrigeration module 4 comprises semiconductor chilling plate, and semiconductor chilling plate is provided with temperature sensor (being specifically as follows thermistor), and this temperature sensor is connected with temperature collect module 2.
Fig. 2 is electrical block diagram of the present utility model, from this figure, described Temperature Setting module 1 comprises digital control resistance-variable device 11, and this digital control resistance-variable device 11 comprises VDD pin, AGND1 pin, SCL pin, SDA pin, AD0 pin and adjustable resistance; The power supply of described VDD pin access 3.3V, also has a branch road on the electric power connection line road of VDD pin and 3.3V, this branch road passes through capacitor C 98 and is connected with AGND in analog; Described AGND1 pin is connected with AGND in analog; The input of described SCL pin access serial clock; Described SDA pin incoming serial data input; The power supply of described AD0 pin access 3.3V; Described adjustable resistance one end is connected with AGND in analog, the other end is connected with the power supply of 25A by resistance R 109, and the resistance adjustment end of adjustable resistance is connected with the in-phase input end of operational amplifier 31, on the circuit that this resistance adjustment end is connected with in-phase input end, also there are two branch roads, wherein a branch road is connected with resistance R 112, and another branch road is connected with AGND in analog by capacitor C 103.
Described operational amplifier 31 comprises positive power source terminal, negative power end, in-phase input end, inverting input and operational amplifier output terminal; Described positive power source terminal is connected with the power supply of 5V, and is connected with AGND in analog by capacitor C 100 simultaneously; Described negative power end is connected with AGND in analog; Described inverting input is connected with the power supply of 25A by resistance R 107, and passes through capacitor C 101 simultaneously and be connected with AGND in analog, and the temperature acquisition voltage that described temperature collect module 2 is exported is delivered to inverting input through this; Described operational amplifier output terminal is connected with driving circuit 32 by resistance R 106, and there are three branch roads on the circuit that is connected with driving circuit 32 of resistance R 106, article three, branch road is connected with respectively resistance R 111, capacitor C 102 and resistance R 108, and wherein resistance R 111 and capacitor C 102 is connected with AGND in analog jointly.
Described driving circuit 32 comprises VIN pin, AGND21 pin, VREF pin, CIRL_H pin, SENSE_N pin, D0 pin, AGND22 pin, CIRL_SEL pin and PWM pin; Described VIN pin is connected with power supply and the power supply ground PGND of 12V by capacitor C 99, polar capacitor C96 and polar capacitor C97 jointly with AGND21 pin, wherein, the power supply of 12V is connected with VIN pin by the positive pole of polar capacitor C96 and polar capacitor C97, and power supply ground PGND is connected with AGND21 pin by the negative pole of polar capacitor C96 and polar capacitor C97; Described VREF pin is connected with low pressure lock-in circuit UVLO; Described CIRL_H pin is connected with operational amplifier output terminal; Described SENSE_N pin is connected with refrigeration module 4 by capacitor C 95 jointly with D0 pin; Described CIRL_SEL pin is connected with power supply ground PGND jointly with AGND22 pin.
In the time that the utility model is worked, amplifier comparison module 3 amplifies the difference of Temperature Setting voltage and temperature acquisition voltage output temperature control voltage, this temperature control voltage is delivered to refrigeration module 4, refrigeration module 4 freezes according to temperature control voltage, because above-mentioned amplifier comparison module 3 is hardware Real-time Feedback, do not need to carry out read-write program, not only simplified the structure of laser temperature control system, also improved feedback time and the stability of laser temperature control system.Especially, owing to having set up potentiometer 33, this potentiometer 33, for regulating the enlargement factor of Temperature Setting voltage and temperature acquisition voltage difference, makes the regulation and control of laser temperature control system more accurate.
Above-mentioned embodiment is only preferred implementation of the present utility model; the scope that can not limit with this utility model protection, the variation of any unsubstantiality that those skilled in the art does on basis of the present utility model and replacement all belong to the utility model scope required for protection.

Claims (5)

1. a laser temperature control system, comprise Temperature Setting module, temperature collect module and refrigeration module, it is characterized in that: also comprise amplifier comparison module, described Temperature Setting module is according to the temperature value output temperature setting voltage of setting, temperature output temperature that described temperature collect module gathers refrigeration module gather voltage, and this Temperature Setting voltage and temperature acquisition voltage are delivered to amplifier comparison module; Described amplifier comparison module amplifies the difference of Temperature Setting voltage and temperature acquisition voltage output temperature control voltage, and this temperature control voltage is delivered to refrigeration module, and refrigeration module freezes according to temperature control voltage.
2. laser temperature control system according to claim 1, it is characterized in that: described amplifier comparison module comprises operational amplifier and potentiometer, described potentiometer is connected with two input ends of operational amplifier, and this potentiometer is for regulating the enlargement factor of Temperature Setting voltage and temperature acquisition voltage difference.
3. laser temperature control system according to claim 2, is characterized in that: described Temperature Setting module comprises digital control resistance-variable device, and digital control resistance-variable device is connected with the in-phase input end of operational amplifier.
4. laser temperature control system according to claim 2, is characterized in that: described amplifier comparison module comprises driving circuit, and input end, the output terminal of driving circuit are connected with operational amplifier output terminal, refrigeration module respectively.
5. laser temperature control system according to claim 2, it is characterized in that: described refrigeration module comprises semiconductor chilling plate, semiconductor chilling plate is provided with temperature sensor, this temperature sensor is connected with temperature collect module, and temperature collect module is connected with the inverting input of operational amplifier.
CN201420002508.0U 2014-01-01 2014-01-01 Laser temperature control system Expired - Fee Related CN203689185U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420002508.0U CN203689185U (en) 2014-01-01 2014-01-01 Laser temperature control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420002508.0U CN203689185U (en) 2014-01-01 2014-01-01 Laser temperature control system

Publications (1)

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CN203689185U true CN203689185U (en) 2014-07-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104331102A (en) * 2014-09-18 2015-02-04 杭州电子科技大学 TEC-based laser temperature control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104331102A (en) * 2014-09-18 2015-02-04 杭州电子科技大学 TEC-based laser temperature control circuit

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GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20150626

Address after: 100000 No. 5 West Garden Road, Beijing Information Technology College, Beijing, Chaoyang District

Patentee after: Chen Yanmin

Address before: 518100 Guangdong city of Shenzhen province Nanshan District Xili Sports Center affiliated building B 11A

Patentee before: Shenzhen aurora Centrix Technology Ltd.

Effective date of registration: 20150626

Address after: 100000 No. 5 West Garden Road, Beijing Information Technology College, Beijing, Chaoyang District

Patentee after: Chen Yanmin

Address before: 518100 Guangdong city of Shenzhen province Nanshan District Xili Sports Center affiliated building B 11A

Patentee before: Shenzhen aurora Centrix Technology Ltd.

ASS Succession or assignment of patent right

Owner name: CHEN YANMIN

Free format text: FORMER OWNER: SHENZHEN JIGUANG SHIJI SCIENCE + TECHNOLOGY CO., LTD.

Effective date: 20150626

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20151009

Address after: 621000 Jiuzhou Road, Fucheng District, Sichuan, Mianyang, China, No. 303

Patentee after: SINOLASER PROJECTION TECHNOLOGY CO., LTD.

Address before: 100000 No. 5 West Garden Road, Beijing Information Technology College, Beijing, Chaoyang District

Patentee before: Chen Yanmin

Effective date of registration: 20151009

Address after: 621000 Jiuzhou Road, Fucheng District, Sichuan, Mianyang, China, No. 303

Patentee after: SINOLASER PROJECTION TECHNOLOGY CO., LTD.

Address before: 100000 No. 5 West Garden Road, Beijing Information Technology College, Beijing, Chaoyang District

Patentee before: Chen Yanmin

C41 Transfer of patent application or patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140702

Termination date: 20190101

CF01 Termination of patent right due to non-payment of annual fee