CN203070124U - High-power precise temperature control circuit employing semiconductor cooler - Google Patents
High-power precise temperature control circuit employing semiconductor cooler Download PDFInfo
- Publication number
- CN203070124U CN203070124U CN2012206882793U CN201220688279U CN203070124U CN 203070124 U CN203070124 U CN 203070124U CN 2012206882793 U CN2012206882793 U CN 2012206882793U CN 201220688279 U CN201220688279 U CN 201220688279U CN 203070124 U CN203070124 U CN 203070124U
- Authority
- CN
- China
- Prior art keywords
- power
- semiconductor cooler
- circuit
- temperature
- control circuit
- 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 - Lifetime
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The utility model relates to a high-power precise temperature control circuit employing a semiconductor cooler. The high-power precise temperature control circuit comprises a semiconductor cooler, a core controller, a temperature sensor for sensing the temperature of the semiconductor cooler, and a power driving circuit for controlling the semiconductor cooler. The semiconductor cooler TEC is used as a temperature element; a core processor is used to realize bidirectional controlling of cooling and heating and power controlling; and an MOSFET high-power tube control circuit is employed to realize high power driving, bidirectional controlling of cooling and heating and accurate power controlling of the semiconductor cooler. According to a set temperature point, PID controlling and PWM modulation outputting are carried out, so that the temperature is controlled at the high precision level and the power driving amplification is completed. Rated 350-W power driving can be realized in a small circuit board; and the two functions of cooling and heating can be realized simultaneously. Moreover, the provided circuit with the simple structure and small size is convenient for miniaturization.
Description
Technical field
The utility model relates to semiconductor cooler, relates in particular to a kind of high-power precision temperature control circuit that adopts semiconductor cooler.
Background technology
Semiconductor cooler abbreviates TEC as, adopts the high-power precision temperature control of TEC to belong to automatic control technology and electronic technology.Because the develop rapidly of semiconductor technology, TEC can generate heat with another side to the one side refrigeration based on peltier effect.The appearance of this device makes and can adopt a circuit, utilize the input current direction to change and realize refrigeration and heat two kinds of functions, the quantity of circuit devcie and the volume of circuit board have been simplified like this, be conducive to realize miniaturization, semiconductor refrigerating obtains application more and more widely in modern electronic technology, the thermostat of many electronic equipments has generally adopted semiconductor refrigerating technology.Along with electronic technology the developing rapidly of microwave regime, semiconductor refrigerating technology has become a requisite important topic in the microwave communication engineering.
Simultaneously, in military laser and infrared field, product must satisfy the environmental work requirement of high temperature and low temperature, and for example, the operation wavelength of semiconductor laser is closely related with energy and temperature, and variation of temperature will cause the drift of wavelength and the decay of energy; The sensitivity of infrared eye also is closely related with self temperature.Therefore, need have corresponding temperature control device to come to provide suitable condition of work to these products, under this demand, small size, temperature are controlled accurate semiconductor temperature-control technology and are begun to produce.Also generally adopted the TEC temperature control technology abroad, and adopt special-purpose TEC control chip, electric current mostly be greatly ± 3A～± 6A, can not accomplish powerful temperature control.
The utility model content
The purpose of this utility model is to propose a kind of high-power precision temperature control circuit that adopts semiconductor cooler, can realize high-power and refrigeration, the temperature control that heats, and solves the operate as normal problem under the high low temperature of infrared and laser module.
For achieving the above object, the utility model adopts following technical scheme: a kind of high-power precision temperature control circuit that adopts semiconductor cooler, comprise semiconductor cooler, core controller, the power driving circuit that is used for responding to the temperature sensor of semiconductor refrigerating actuator temperature and is used for the control semiconductor cooler, the signal output of temperature sensor is connected to the temperature signal input end of core processor, core processor connects power driving circuit by the logical transition drives, the described semiconductor cooler of power driving circuit output control, the output terminal of power driving circuit is provided with current sensor, and the signal output part of current sensor connects the current signal input end of core controller.
The output terminal of described current sensor also connects the interrupting input end of core processor by a holding circuit.
Described core processor adopts the PIC16F873 single-chip microcomputer.
Described power driving circuit adopts the MOSFET high power valve.
Described core processor is provided with the both-way communication interface.
The utility model adopts semiconductor cooler TEC as temperature element (TE), core processor is realized refrigeration, is heated the control of two-way control and power, by use MOSFET high power valve control circuit realized to semiconductor cooler high-power driving, freeze and heat two-way control and power control accurately, carry out PID control and PWM modulation output according to the temperature spot of setting, temperature is controlled at higher precision level, and finished power drive and amplify; Can in a very little circuit board, realize the power drive of specified 350W, realize two functions of cooling and warming simultaneously; This circuit simple in structure, volume is little, and is in light weight, is beneficial to miniaturization.
Description of drawings
Fig. 1 is composition and the workflow diagram of the utility model circuit.
Embodiment
Below in conjunction with specific embodiment the utility model is done further introduction.
Be illustrated in figure 1 as composition and workflow diagram that the utility model adopts the high-power precision temperature control circuit of semiconductor cooler, as seen from the figure, this circuit comprises as the single-chip microcomputer of core controller and semiconductor cooler, the signal input part of core processor respectively with the signal output part control linkage of temperature sensor and current sensor, the control input end of temperature sensor is connected with the control output end of semiconductor cooler; The signal output part of core processor is connected with the input end of logical transition circuit, the output terminal of logical transition circuit is connected with the input end of the power driving circuit that adopts MOSFET, the output terminal of power driving circuit respectively with the control input end of semiconductor cooler and the signal input part control linkage of current sensor; Core processor is provided with the both-way communication interface.
The logical transition circuit is used for the output signal of core processor is offered power driving circuit through after the level conversion, can adopt special chip to realize, does not repeat them here.
In order further to improve security and the reaction velocity of circuit; present embodiment is provided with a holding circuit in addition between the interrupting input end of current sensor and core processor; the output signal one tunnel of current sensor directly is input to core processor by sampling; another road is input to holding circuit; holding circuit by hardware circuit to by signal is handled; and this signal of analysis and judgement off-rating whether; it is the drive current overcurrent; if off-rating; just export pulse to the look-at-me input end of core processor; the core processor interruption that makes an immediate response is interrupted rapidly handling, and the The whole control circuit is carried out corresponding protection handle.
The reaction velocity of carrying out the signal judgement by hardware protection circuit is input to core processor than directly by signal sampling; faster by the software processing speed of core processor again; react sensitiveer; but also can avoid can not in time finding flow problem because of what software issue caused, guaranteed safety and the life-span of circuit.This hardware circuit of function of realizing this holding circuit is a lot, and as the modes such as circuit such as triode output triggering of routine, those skilled in the art can expect multiple conventional implementation, do not repeat them here.
The utility model adopts single-chip computer control system, can pass through computer settings temperature control point easily; Adopt the PWM modulation system, realize very high temperature control precision.
The control circuit of present embodiment adopts semiconductor cooler as temperature element (TE), the single-chip microcomputer PIC16F873 that adopts ten bit A/D converters built-in is as core CPU, realize freezing, heating the control of two-way control and power, and use MOSFET high power valve control circuit realized to semiconductor cooler high-power driving, freeze and heat two-way control and power control accurately, have circuit reduction, built-in AD conversion simultaneously, have very strong antijamming capability; Determine other logic of control circuit and change-over circuit part according to controller and control flow; Determine size of current in the semiconductor cooler according to watt level, select the current sensor value, form current regulator, connect temperature sensor, form voltage control loop; Carry out PID control and PWM modulation output according to the temperature spot of setting, determine pid algorithm, adjust and select P, I, D coefficient according to the control time, control accuracy etc., and finish power of motor and drive amplification; Realize the power amplification of maximum 28V, 40A electric current by specific power amplification circuit; The collecting temperature sensor signal is carried out temperature computation; Carry out power calculation and safeguard protection according to current feedback signal; Volume is little, is beneficial to miniaturization, and temperature-controlled precision is not less than 0.5 ℃.Core controller is by RS232 or the RS422 communication interface of both-way communication interface and outer computer, to be used for the temperature spot setting.
Power driving circuit is definite in the utility model: the peripheral drive circuit parameter of selecting MOSFET according to the PWM control parameter of core controller; Parameter and quantity according to the required power selection high-power MOSFET that provides of semiconductor cooler; Determine the parameter of holding circuit according to circuit power and waveform parameter.
The utility model according to the temperature controlling point, is realized accurate temperature control on the basis of fully having analyzed TEC power transfer characteristics, can realize the power drive of specified 350W in a very little circuit board, realizes two functions of cooling and warming simultaneously; Adopt pid control mode, and use the driving method of PWM, temperature control at higher precision level, be experimental results show that the requirement that can satisfy high-power driving, maximum can provide the 40A drive current.
Claims (5)
1. high-power precision temperature control circuit that adopts semiconductor cooler, it is characterized in that: comprise semiconductor cooler, core controller, the power driving circuit that is used for responding to the temperature sensor of semiconductor refrigerating actuator temperature and is used for the control semiconductor cooler, the signal output of temperature sensor is connected to the temperature signal input end of core processor, core processor connects power driving circuit by the logical transition drives, the described semiconductor cooler of power driving circuit output control, the output terminal of power driving circuit is provided with current sensor, and the signal output part of current sensor connects the current signal input end of core controller.
2. the high-power precision temperature control circuit of employing semiconductor cooler according to claim 1 is characterized in that: the output terminal of described current sensor also connects the interrupting input end of core processor by a holding circuit.
3. the high-power precision temperature control circuit of employing semiconductor cooler according to claim 1 and 2 is characterized in that: described core processor employing PIC16F873 single-chip microcomputer.
4. the high-power precision temperature control circuit of employing semiconductor cooler according to claim 3 is characterized in that: described power driving circuit employing MOSFET high power valve.
5. the high-power precision temperature control circuit of employing semiconductor cooler according to claim 3, it is characterized in that: described core processor is provided with the both-way communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206882793U CN203070124U (en) | 2011-12-16 | 2012-12-13 | High-power precise temperature control circuit employing semiconductor cooler |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120528915 | 2011-12-16 | ||
| CN201120528915.1 | 2011-12-16 | ||
| CN2012206882793U CN203070124U (en) | 2011-12-16 | 2012-12-13 | High-power precise temperature control circuit employing semiconductor cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203070124U true CN203070124U (en) | 2013-07-17 |
Family
ID=48768892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206882793U Expired - Lifetime CN203070124U (en) | 2011-12-16 | 2012-12-13 | High-power precise temperature control circuit employing semiconductor cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203070124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111736640A (en) * | 2020-08-25 | 2020-10-02 | 北京富吉瑞光电科技股份有限公司 | Temperature control device and temperature control method |
-
2012
- 2012-12-13 CN CN2012206882793U patent/CN203070124U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111736640A (en) * | 2020-08-25 | 2020-10-02 | 北京富吉瑞光电科技股份有限公司 | Temperature control device and temperature control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102290705B (en) | High-reliability constant voltage mode semiconductor laser driver with continuously adjustable output light power | |
| CN102801104B (en) | System for realizing bidirectional temperature control on laser based on full-bridge controller | |
| CN100511883C (en) | High-precision water cooling system and control method thereof | |
| CN202177270U (en) | temperature controller for combined control of multiple semiconductor refrigerators | |
| CN205159790U (en) | Colliery is semiconductor laser's temperature control system in optic fibre temperature measurement in pit | |
| CN105223977B (en) | A kind of control method of the semiconductor laser temperature control device based on fuzzy control | |
| CN108666856A (en) | Power stability type solid state laser and control method | |
| CN105607675B (en) | A kind of inexpensive digital adaptation TEC temperature regulating devices and method | |
| CN113110634A (en) | Semiconductor laser temperature control system, equipment and method | |
| CN107588576A (en) | The thermoelectric cooling power optimization regulating system and method for high precision temperature control | |
| CN203070124U (en) | High-power precise temperature control circuit employing semiconductor cooler | |
| CN204925836U (en) | Semiconductor laser temperature control system | |
| CN208423445U (en) | Power stability type solid state laser | |
| CN101907897A (en) | Temperature control circuit and protection device thereof | |
| CN219998703U (en) | Driving control system of semiconductor laser | |
| CN202748683U (en) | System for realizing bidirectional temperature control of laser based on full bridge controller | |
| CN103984375A (en) | Temperature control system based on DSP and temperature sensor control and control method thereof | |
| CN105466064B (en) | A kind of linear sterlin refrigerator driving method of general separated type and driving circuit | |
| CN101739045A (en) | Small temperature control system | |
| CN201918710U (en) | Current-limiting time-delay protection circuit for lithium battery charging drill | |
| CN109656281A (en) | A kind of optical fibre gyro thermoelectric cooling control system | |
| CN105790065A (en) | Multi-wavelength tunable laser diode (LD) driving power supply system capable of remote control and working method of system | |
| CN203026791U (en) | Intelligent adjustable light source device | |
| CN203734132U (en) | Laser light source | |
| CN201383813Y (en) | Automatically controlled optical module of constant average light power and extinction ratio based on single chip microcomputer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |