CN101950186B - Limited thermostat controller with wide voltage consumption based on thermoelectric refrigerating unit - Google Patents
Limited thermostat controller with wide voltage consumption based on thermoelectric refrigerating unit Download PDFInfo
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Abstract
The invention relates to a limited thermostat controller with wide voltage consumption based on a thermoelectric refrigerating unit, belonging to the technical field of electronic technique. The thermostat controller comprises a temperature setting circuit (2), a temperature sampling circuit (4), and a display drive circuit (3) connected with the temperature setting circuit (2) and the temperature sampling circuit (4) through an option switch. The controller is characterized by also comprising a PI control circuit (5), a limited current circuit (6), a power control circuit (7) and a power output circuit (8), wherein after the temperature setting circuit and the temperature sampling circuit are substracted by a subtractor, output signals are transmitted to the PI control circuit (5), the output signals of the PI control circuit are transmitted to the limited current circuit (6) for carrying out current limiting, the current-limited signals are transmitted to the power control circuit (7), and control signals generated by the power control circuit are transmitted to the power output circuit (8) which is used for outputting the power so as to drive a thermo electric cooler (TEC).The double negative feedback structure of the invention causes temperature control precision to be +/-0.1 degree and stability to be +/-0.002 degree; the multitube current expansion technology is applied to the power output circuit, so that the maximum output power can reach 150W; and the limited current circuit can effectively protect stable operation of the instrument.
Description
Technical field
The invention belongs to the technical field of electronic technology.Be particularly related to the thermostatically-controlled equipment that is used for the laser instrument refrigeration.
Background technology
In fields such as optical fiber communication, national defense industry; Each class A amplifier A, modulator are widely used semiconductor laser as light source; And semiconductor laser is the device of a kind of high power density, high quantum effect, owing to exist various non-radiation recombination losses, free carrier absorption equal loss mechanism, makes its electro-optical efficiency can only reach 20%～30%; This means that the electric power that considerable part is injected will be converted into heat; Cause that laser temperature raises, and the rising of temperature will produce a lot of adverse influences to laser instrument, mainly contain the following aspects:
1, temperature is to the influence of threshold current:
Along with the rising of temperature will cause the increase of threshold current, output power is descended.
2, temperature is to the influence of V-I relation:
When injection current equated, the forward voltage drop that the laser instrument that temperature is high is corresponding was also big, and this brings difficulty can for the design of semiconductor laser constant current source.
3, temperature is to the influence of output wavelength:
Narrow down because the energy gap of active layer material raises with temperature, make excitation wavelength move i.e. red shift phenomenon to the long wave direction.The red shift amount is relevant with the structure and the active area materials of device, is about 0.2～0.3nm/ ℃.Therefore, can finely tune the peak wavelength of laser, to satisfy some application strict to wavelength with suitable temperature control.
4, temperature is to P-I curve effect of nonlinear:
Under the ideal situation, the P-I of semiconductor laser should be a linearity curve, and PN junction is overheated to be to produce one of nonlinear reason.In addition, come from the active area instability of horizontal (side) mould, also can cause non-linear from reflected light of outside (as from connector, positions such as tail optical fiber ends) and relevant with light intensity factor such as saturated.Wherein the instability of pattern is the main cause that the P-I kink of a curve occurs, and this instability also has much relations with temperature except outside the Pass the structure with laser instrument itself has.
In addition temperature raises and also can increase inner damagedly, seriously influences life-span of device, brings very big difficulty to application.If the heat that is produced is not removed, will cause a kind of vicious cycle, laser instrument was lost efficacy very soon.Test shows; 25 ℃ of the every increases of temperature; The life-span of device will reduce half the; So working temperature is very important for laser instrument, must working temperature constant and can accurate adjustment be provided to laser instrument, could guarantee that laser instrument has that maximum efficient fluctuates with minimal power and his serviceable life.
Often adopt the ice water circulation mode to freeze to high power laser in the past, reached the purpose of temperature control through the flow of regulating frozen water in the heat sink middle circulating line.This control side is very backward at everyways such as handling, accuracy and stability.The present invention is born under this background.The present invention utilizes semiconductor thermoelectric refrigeration device (TEC, Thermoelectric Cooler) that laser instrument is freezed and temperature control.Semiconductor cooler is a kind of solid coolant mode, compares with common compressor refrigeration system, and its advantage is not have the mechanical rotation part, need not cold-producing medium, noiseless, pollution-free, volume is little, reliability is high, the life-span is long, is easy to constant temperature etc.Control section adopts dual negative feedback structure; Temperature-controlled precision and temperature stability have effectively been improved; Power supply adopts the mode of the variable direct current input of wide power, to the controlled system of different qualities and the TEC of different parameters, chooses the various power power supply; Effectively limit the internal power consumption of controller self, improved power-efficient greatly.The present invention not only can be applicable to laser instrument is carried out temperature control, also can be applicable to the temperature control of other hot system.
Have similar products at present both at home and abroad, as:
The thermoelectric module controller of CDS series of Taiwan Zhihui Tech Corp., this characteristics of product comprises:
1, temperature-control range-50～+ 150 ℃, degree of accuracy ± 0.3 ℃, degree of stability ± 0.01～0.05 ℃.
2, temperature is set and 0.01 ℃ of the value of reading resolution.
But 3 single-set operations or the operation of connection PC software.
4, integrating controller and driver, and have two groups of T-type thermopairs.
5, the customized temperature control platform of can arranging in pairs or groups is applicable to electronic components test, Photoelectric Detection, investigation of materials, biotechnology etc.
The LFI3751 Temperature Control Instrument of U.S. Wavelength Electronics Inc., this characteristics of product comprises:
1,24 hours temperature stabilities: 0.003 ℃.
2, maximum TEC drive current output: ± 5 amperes.
3, scale-up factor gain margin: 1～100.
4, integration time constant scope: 1～10 second.
5, derivative time constant scope: 1～100 second.
6, supply voltage :+115V～+ 230V.
7, RS-232 interface.
The DN1220 Thermoelectric Cooler Controller of U.S. ThermOptics Inc., this characteristics of product comprises:
1, ratio and integration control.
2, gain and integration time constant are controlled (need not the outside integrating capacitor is provided) by a potentiometer.
3, single power supply: direct current+5V～+ 12V.
4, drive current: ± 2 amperes.
5, temperature stability is higher than 0.01 ℃.
But above-mentioned product has only the introduction of properties of product, and does not see disclosing of concrete structure.
Summary of the invention
The technical matters that the present invention will solve is; Design a kind of wide power power consumption constraints type radiator valve that is used for laser instrument is carried out temperature control based on TEC; Through adopting the input of dual negative feedback structure, wide power voltage, multitube to expand the final stage power output circuit and the amplitude limit current foldback circuit of stream technology, realize improving temperature controlled degree of accuracy, raising laser output power stability and spectral purity, the prolongation laser instrument purpose in serviceable life.
The present invention utilizes TEC two-way refrigeration to heat characteristics; Voltage and setting voltage that temperature sensor feeds back to are made comparisons, difference through the PI algorithm process, is input to the bidirectional constant source with voltage signal processed again; Utilize the output current control TEC in bidirectional constant source; It is heated controlled laser instrument or freeze, actual temperature is equated with design temperature, realize the laser instrument temperature control.
Concrete technical scheme of the present invention is:
A kind of wide power power consumption constraints type radiator valve based on TEC, structure comprises that front panel 1, temperature are provided with circuit 2, temperature sampling circuit 4 and TEC TEC; Temperature is provided with circuit 2 and is connected display driver circuit 3 with temperature sampling circuit 4 through SS, is shown by display driver circuit 3 temperature value or actual temperature value are set; Structure also has PI control circuit 5, current-limiting circuit 6, power control circuit 7 and power output circuit 8; Temperature is provided with circuit 2 subtract each other through subtracter with temperature sampling circuit 4 after; The output signal is delivered to PI control circuit 5; The output signal of PI control circuit 5 is delivered to current-limiting circuit 6 and is carried out current limliting; Signal after the current limliting is delivered to power control circuit 7, and the control signal that power control circuit 7 produces is delivered to power output circuit 8, is used to drive TEC TEC by power output circuit 8 output powers;
Described temperature is provided with circuit 2, display driver circuit 3, temperature sampling circuit 4, PI control circuit 5, current-limiting circuit 6, power control circuit 7 and power output circuit 8; All adopt dual power supply; Power supply voltage range is ± 5V～± 16V; Positive supply VCC in each circuit and negative supply VEE's is big or small identical, opposite in sign; All integrated transporting dischargings all adopt the LM358 model in each circuit, and 8 pin of all integrated transporting dischargings all meet positive supply VCC, and the capacity earth of process 0.33u, and 4 pin of all integrated transporting dischargings all meet negative supply VEE, and the capacity earth of process 0.33u;
Described PI control circuit 5 is: 5 pin of integrated transporting discharging U3B are through resistance R 12 ground connection; And the port " Real_T " in resistance R 11 jointing temp sample circuits 4; 6 pin are provided with the port " Set_T " in the circuit 2 through resistance R 10 jointing temps; 6 pin connect 7 pin through resistance R 13, and 7 pin connect port " K_Full "; Port " K_Full " is the full resistance terminal of " gain-adjusted " potentiometer in the front panel 1, the zero resistance end ground connection of " gain-adjusted " potentiometer, and variable resistor end " K_ADJ " connects 5 pin of integrated transporting discharging U4B; 6 pin of integrated transporting discharging U4B connect 7 pin, and connect 6 pin of integrated transporting discharging U5B through resistance R 15; The 5 pin ground connection of integrated transporting discharging U5B, 6 pin connect 7 pin through resistance R 16, and 7 pin connect port " V_Sum " through resistance R 17; 7 pin of integrated transporting discharging U3B connect 2 pin of integrated transporting discharging U4A through resistance R 14; The 3 pin ground connection of integrated transporting discharging U4A, 2 foot meridian capacitor C8 connect 1 pin, and 1 pin connects port " V_Sum " through resistance R 18; Port " V_Sum " is as the input of current-limiting circuit 6;
Described current-limiting circuit 6 is: the 3 pin ground connection of integrated transporting discharging U5A, 2 pin connect the output signal " V_Sum " of PI control circuit 5, and connect 1 pin through resistance R 19, and 2 pin connect the anode of voltage stabilizing diode D3; The negative electrode of voltage stabilizing diode D3 connects the negative electrode of voltage stabilizing diode D4, and the anode of voltage stabilizing diode D4 connects 1 pin of integrated transporting discharging U5A; 1 pin of integrated transporting discharging U5A connects port " C_Full " through resistance R 20; Port " C_Full " is the full resistance terminal of " current limliting presets " potentiometer in the front panel 1, the zero resistance end ground connection of " current limliting presets " potentiometer, and variable resistor termination port " C_Limit " is as the input signal of power control circuit 7;
Described power control circuit 7 is: 3 pin of integrated transporting discharging U6A connect port " C_Limit " through resistance R 21; Port " C_Limit " connects the variable resistor end of " current limliting presets " potentiometer in the front panel 1; The 2 foot meridian capacitor C15 of integrated transporting discharging U6A connect 1 pin; 1 pin connects port " H_Left ", and through capacitor C 16 ground connection, 1 pin connects 6 pin of integrated transporting discharging U6B through resistance R 23; The 5 pin ground connection of integrated transporting discharging U6B, 6 pin connect 7 pin through resistance R 22, and 7 pin connect port " H_Right ", and through capacitor C 17 ground connection; 2 pin of integrated transporting discharging U7A are through resistance R 28 ground connection; 2 pin connect the signal " Rs-" of power output circuit 8 through resistance R 27; 3 pin of integrated transporting discharging U7A connect the signal " Rs+ " of power output circuit 8 through resistance R 26, and 3 pin connect 1 pin through resistance R 25, and 1 pin connects 2 pin of integrated transporting discharging U6A through resistance R 24;
Described power output circuit 8 is: Darlington transistor Q1, Darlington transistor Q2, Darlington transistor Q3, Darlington transistor Q4 all adopt the TIP132 model, and Darlington transistor Q5, Darlington transistor Q6, Darlington transistor Q7, Darlington transistor Q8 all adopt the TIP137 model; 2 pin of Darlington transistor Q1 meet positive supply VCC, and 1 pin connects 1 pin of Darlington transistor Q5, and connect the control signal " H_Left " of power control circuit 7 through resistance R 30; 2 pin of Darlington transistor Q2 meet positive supply VCC, and 1 pin connects 1 pin of Darlington transistor Q6, and connect the control signal " H_Left " of power control circuit 7 through resistance R 29; 3 pin of Darlington transistor Q1 connect Darlington transistor Q2 3 pin, connect Darlington transistor Q5 3 pin, connect Darlington transistor Q6 3 pin, connect port " Rs+ ", connect 1 pin of port " TEC " through resistance R s; 1 pin of port " TEC " connects port " Rs-"; Port " TEC " is " TEC output " interface in the front panel 1; 2 pin of Darlington transistor Q4 meet positive supply VCC, and 1 pin connects 1 pin of Darlington transistor Q8, and connect the control signal " H_Right " of power control circuit (7) through resistance R 32; 2 pin of Darlington transistor Q3 meet positive supply VCC, and 1 pin connects 1 pin of Darlington transistor Q7, and connect the control signal " H_Right " of power control circuit 7 through resistance R 31; 3 pin of Darlington transistor Q4 connect Darlington transistor Q3 3 pin, connect Darlington transistor Q8 3 pin, connect Darlington transistor Q7 3 pin, connect 2 pin of port " TFC "; 2 pin of 2 pin of Darlington transistor Q5,2 pin of Darlington transistor Q6, Darlington transistor Q7 and 2 pin of Darlington transistor Q8 meet negative supply VEE.
In the said structure of the present invention, TEC TEC can use the refrigerator of two-way refrigeration heating commonly used in refrigerating field; Temperature is provided with the circuit that circuit 2, temperature sampling circuit 4 and display driver circuit 3 can select to have identical function in the prior art, the circuit that also can select the embodiment of the invention to provide.
The wide power power consumption constraints type radiator valve that the present invention is based on TEC has following beneficial effect:
1, the present invention adopts dual negative feedback structure, has effectively improved temperature stability, and then has improved the stability and the spectral purity of laser output power;
2, wide power input voltage range: direct current ± 5V～± 16V, help increasing work efficiency and degree of accuracy;
3, the final stage power output circuit adopts multitube to expand the stream technology, maximum output current is brought up to ± 7.5A, makes that peak power output can be up to 150W;
4, adopt the amplitude limit overcurrent protection, reduced the caused puncture of transient high voltage and instantaneous heavy current and destroyed, effectively protected the steady operation of instrument;
5, can set temperature-control range-50～+ 120 ℃, degree of accuracy ± 0.1 ℃, degree of stability ± 0.002 ℃.
Description of drawings
Fig. 1 is a general structure block diagram of the present invention.
Fig. 2 is that temperature of the present invention is provided with circuit 2 schematic diagrams.
Fig. 3 is display driver circuit 3 schematic diagrams of the present invention.
Fig. 4 is temperature sampling circuit 4 schematic diagrams of the present invention.
Fig. 5 is PI control circuit 5 schematic diagrams of the present invention.
Fig. 6 is current-limiting circuit 6 schematic diagrams of the present invention.
Fig. 7 is power control circuit 7 schematic diagrams of the present invention.
Fig. 8 is power output circuit 8 schematic diagrams of the present invention.
Fig. 9 is front panel 1 structural drawing of the present invention.
Embodiment
Circuit among following each embodiment all adopts dual power supply, and wherein VCC is the positive supply in the circuit, and its service area is 5V～16V, and VEE is the negative supply in the circuit, and its value is identical with positive supply VCC, opposite in sign; 8 pin of all integrated transporting dischargings among following each embodiment all meet positive supply VCC, and the capacity earth of process 0.33u, and 4 pin of all amplifiers all meet negative supply VEE, and the capacity earth of process 0.33u.
In following each embodiment, the size of the model that symbol in each components and parts back bracket or numeral are these components and parts or the nominal value of these components and parts; And be the model and the nominal value of preferred components and parts.
The structure of embodiment 1 total system of the present invention
The structure of the wide power power consumption constraints type radiator valve based on TEC of the present invention is described in conjunction with Fig. 1.As shown in Figure 1, the present invention is provided with circuit 2, display driver circuit 3, temperature sampling circuit 4, PI control circuit 5, current-limiting circuit 6, power control circuit 7 and power output circuit 8 by temperature and forms.Each circuit arrangement is operated, is shown by 1 pair of total system of front panel in casing.
As shown in Figure 1; Temperature is provided with circuit 2 subtract each other through subtracter with temperature sampling circuit 4 after, the output signal is delivered to PI control circuit 5, the output signal of PI control circuit 5 is delivered to current-limiting circuit 6 and is carried out current limliting; Signal after the current limliting is delivered to power control circuit 7; The control signal that power control circuit 7 produces is delivered to power output circuit 8, is used to drive TEC TEC by power output circuit 8 output powers, in addition; Temperature is provided with circuit 2 and delivers to display driver circuit 3 with temperature sampling circuit 4 through SS, is shown by display driver circuit 3 temperature value or actual temperature value are set.
Fig. 9 has provided a kind of arrangement plan of front panel 1.Wherein, display screen shows the actual temperature (" actual temperature " lamp is bright) that temperature (" temperature is set " lamp is bright) or laser instrument are set by " show and select " switch (can select double-point double-throw switch S1) control; " preset temperature " potentiometer is provided with circuit 2 with temperature and is connected; " gain-adjusted " potentiometer is connected with PI control circuit 5; " current limliting presets " potentiometer is connected with current-limiting circuit 6; " TEC output " interface is connected with power output circuit 8, and " NTC input " interface is connected with temperature sampling circuit 4.The concrete connected mode of each potentiometer and interface provides in the embodiment of back.
As shown in Figure 2, temperature is provided with circuit 2 and comprises: the 3 pin ground connection of reference power supply D1 (LM336_2.5V), and 2 pin meet positive supply VCC through resistance R 1 (5.1k); 2 pin of reference power supply D1 connect port " T_Ref ", i.e. the full resistance terminal of " preset temperature " potentiometer (10k) in the front panel 1, the zero resistance end ground connection of " preset temperature " potentiometer; 5 pin of integrated transporting discharging U1B (LM358) connect port " T_Set "; Be the variable resistor end of " preset temperature " potentiometer in the front panel 1,6 pin of integrated transporting discharging U1B connect 7 pin of U1B (LM358) through resistance R 2 (10k) ground connection through resistance R 3 (22k); 7 pin of integrated transporting discharging U1B connect 3 pin of integrated transporting discharging U1A (LM358); 2 pin of integrated transporting discharging U1A connect 1 pin of U1A, connect port " Set_T ", i.e. 1 pin of double-point double-throw switch S1 (ARP-2216) in the display driver circuit 3.
As shown in Figure 3, display driver circuit 3 comprises: 1 pin of resistance R 4 (2k) meets positive supply VCC, and another pin connects port " LED+ "; Through resistance R 5 (2k) ground connection; Port " LED+ " connects and " temperature is set " in the front panel 1 and the anode of " actual temperature " two LED lights, and 1 pin of potentiometer P1 (10k) (full resistance terminal) ground connection connects 1 pin of port " Display "; It is the signal ground end of digital watch in the front panel 1; 2 pin of potentiometer P1 (variable resistor end) connect 2 pin of port " Display ", i.e. the signal input part of digital watch in the front panel 1, and 3 pin of potentiometer P1 (zero resistance end) connect 1 pin of integrated transporting discharging U2A (LM358) through resistance R 6 (1k); Connect 2 pin of integrated transporting discharging U2A; 3 pin of integrated transporting discharging U2A connect 2 pin of double-point double-throw switch S1 (ARP-2216), and double-point double-throw switch S1 " shows and select " switch in the front panel 1, and 1 pin jointing temp of switch S 1 is provided with the port " Set_T " in the circuit 2; Port " Real_T " in the 3 pin jointing temp sample circuits 4 of switch S 1; 4 pin ground connection of switch S 1,5 pin of switch S 1 connect the negative electrode (LED1-) of the LED that " temperature is set " in the front panel 1, and 6 pin of switch S 1 connect the negative electrode (LED2-) of " actual temperature " LED in the front panel 1.
Embodiment 4 temperature sampling circuits 4 of the present invention
As shown in Figure 4, temperature sampling circuit 4 comprises: 3 pin of reference power supply D2 (LM336_2.5V) connect 5 pin of integrated transporting discharging U2B (LM358), through resistance R 8 (5.1k) ground connection; 2 pin of reference power supply D2 meet positive supply VCC, connect 6 pin of integrated transporting discharging U2B through resistance R 7 (24k), and 6 pin of integrated transporting discharging U2B connect the emitter of triode M1 (9012); Connect 7 pin of integrated transporting discharging U2B through capacitor C 5 (470p), 7 pin of integrated transporting discharging U2B connect the base stage of triode M1 through resistance R 9 (1k), and the collector of triode M1 connects 3 pin of integrated transporting discharging U3A (LM358); Connect port " NTC "; Be 1 pin of " NTC input " interface (BNC) in the front panel 1, the 2 pin ground connection of " NTC input " interface in the front panel 1,2 pin of integrated transporting discharging U3A connect the output terminal of integrated transporting discharging U3A; Connect port " Real_T ", i.e. 3 pin of switch S 1 in the display driver circuit 3.
As shown in Figure 5, PI control circuit 5 comprises: 5 pin of integrated transporting discharging U3B (LM358) are through resistance R 12 (100k) ground connection, 5 pin of integrated transporting discharging U3B through resistance R 11 (100k) from the port in the jointing temp sample circuit 4 " Real_T "; 6 pin of integrated transporting discharging U3B fetch from temperature through resistance R 10 (100k) port " Set_T " in the circuit 2 are set; 6 pin of integrated transporting discharging connect 7 pin of integrated transporting discharging U3B through resistance R 13, and 7 pin of integrated transporting discharging U3B connect port " K_Full ", i.e. the full resistance terminal of " gain-adjusted " potentiometer (10k) in the front panel 1; The zero resistance end ground connection of " gain-adjusted " potentiometer; Variable resistor end " K_ADJ " connects 5 pin of integrated transporting discharging U4B (LM358), and 6 pin of integrated transporting discharging U4B connect 7 pin of U4B, connect 6 pin of integrated transporting discharging U5B (LM358) through resistance R 15 (10k); The 5 pin ground connection of integrated transporting discharging U5B; 6 pin of integrated transporting discharging U5B connect 7 pin of integrated transporting discharging U5B through resistance R 16 (500k), and 7 pin of integrated transporting discharging U5B connect port " V_Sum " through resistance R 17 (10k), and 7 pin of integrated transporting discharging U3B connect 2 pin of integrated transporting discharging U4A (LM358) through resistance R 14 (1M); The 3 pin ground connection of integrated transporting discharging U4A; The 2 foot meridian capacitor C8 (1u) of integrated transporting discharging U4A connect 1 pin of integrated transporting discharging U4A, and 1 pin of integrated transporting discharging U4A connects port " V_Sum " through resistance R 18, and port " V_Sum " is as the input of current-limiting circuit 6.
As shown in Figure 6; Current-limiting circuit 6 comprises: the 3 pin ground connection of integrated transporting discharging U5A (LM358), 2 pin of integrated transporting discharging U5A fetch the output signal " V_Sum " from PI control circuit 5, connect 1 pin of integrated transporting discharging U5A through resistance R 19 (10k); 2 pin of integrated transporting discharging U5A connect the anode of voltage stabilizing diode D3 (5.1V); The negative electrode of voltage stabilizing diode D3 connects the negative electrode of voltage stabilizing diode D4 (5.1V), and the anode of voltage stabilizing diode D4 connects 1 pin of integrated transporting discharging U5A, connects port " C_Full " through resistance R 20 (36k); It is the full resistance terminal of " current limliting presets " potentiometer (10k) in the front panel 1; The zero resistance end ground connection of " current limliting presets " potentiometer, variable resistor termination port " C_Limit " is as the input signal of power control circuit 7.
As shown in Figure 7; Power control circuit 7 comprises: 3 pin of integrated transporting discharging U6A (LM358) connect port " C_Limit " through resistance R 21 (10k); Port " C_Limit " connects the variable resistor end of " current limliting presets " potentiometer (10k) in the front panel 1; The 2 foot meridian capacitor C15 (0.47u) of integrated transporting discharging U6A connect 1 pin of integrated transporting discharging U6A, and 1 pin of integrated transporting discharging U6A connects port " H_Left ", through capacitor C 16 (0.47u) ground connection; 1 pin of integrated transporting discharging U6A connects 6 pin of integrated transporting discharging U6B (LM358) through resistance R 23 (100k); The 5 pin ground connection of integrated transporting discharging U6B, 6 pin of integrated transporting discharging U6B connect 7 pin of integrated transporting discharging U6B through resistance R 22 (100k), and 7 pin of integrated transporting discharging U6B connect port " H_Right "; Through capacitor C 17 (0.47u) ground connection; 2 pin of integrated transporting discharging U7A (LM358) are through resistance R 28 (200k) ground connection, and 2 pin of integrated transporting discharging U7A fetch the signal " Rs-" from power output circuit 8 through resistance R 27 (20k), and 3 pin of integrated transporting discharging U7A fetch the signal " Rs+ " from power output circuit 8 through resistance R 26 (20k); 3 pin of integrated transporting discharging U7A connect 1 pin of integrated transporting discharging U7A through resistance R 25 (200k), and 1 pin of integrated transporting discharging U7A connects 2 pin of integrated transporting discharging U6A through resistance R 24 (10k).
Embodiment 8 power output circuits 8 of the present invention
As shown in Figure 8, power output circuit 8 comprises: 2 pin of Darlington transistor Q1 (TIP132) meet positive supply VCC, and 1 pin of Darlington transistor Q1 connects 1 pin of Darlington transistor Q5 (TIP137); Fetch the control signal " H_Left " from power control circuit 7 through resistance R 30 (0.1k), 2 pin of Darlington transistor Q5 meet negative supply VEE, and 2 pin of Darlington transistor Q2 (TIP132) meet positive supply VCC; 1 pin of Darlington transistor Q2 connects 1 pin of Darlington transistor Q6 (TIP137), fetches the control signal " H_Left " from power control circuit (7) through resistance R 29 (0.1k), and 2 pin of Darlington transistor Q6 meet negative supply VEE; 3 pin of Darlington transistor Q1 connect 3 pin of Darlington transistor Q2, connect 3 pin of Darlington transistor Q5, connect 3 pin of Darlington transistor Q6; Connect port " Rs+ ", connect 1 pin of port " TEC " through resistance R s (0.1 Ω), 1 pin of port " TEC " connects port " Rs-"; Port " TEC " is " TEC output " interface (BNC) in the front panel (1), and 2 pin of Darlington transistor Q4 (TIP132) meet positive supply VCC, and 1 pin of Darlington transistor Q4 connects 1 pin of Darlington transistor Q8 (TIP137); Fetch control signal " H_Right " through resistance R 32 (0.1k) from power control circuit 7; 2 pin of Darlington transistor Q8 meet negative supply VEE, and 2 pin of Darlington transistor Q3 (TIP132) meet positive supply VCC, and 1 pin of Darlington transistor Q3 connects 1 pin of Darlington transistor Q7 (TIP137); Fetch control signal " H_Right " through resistance R 31 (0.1k) from power control circuit 7; 2 pin of Darlington transistor Q7 meet negative supply VEE, and 3 pin of Darlington transistor Q4 connect 3 pin of Darlington transistor Q3, connect 3 pin of Darlington transistor Q8; Connect 3 pin of Darlington transistor Q7, connect 2 pin of port " TEC ".
Claims (4)
1. wide power power consumption constraints type radiator valve based on TEC, structure comprises that front panel (1), temperature are provided with circuit (2), temperature sampling circuit (4) and TEC; Temperature is provided with circuit (2) and is connected display driver circuit (3) with temperature sampling circuit (4) through SS, is shown by display driver circuit (3) temperature value or actual temperature value are set; It is characterized in that structure also has PI control circuit (5), current-limiting circuit (6), power control circuit (7) and power output circuit (8); Temperature is provided with circuit (2) and temperature sampling circuit (4) subtract each other through subtracter after; The output signal is delivered to PI control circuit (5); The output signal of PI control circuit (5) is delivered to current-limiting circuit (6) and is carried out current limliting; Signal after the current limliting is delivered to power control circuit (7), and the control signal that power control circuit (7) produces is delivered to power output circuit (8), is used to drive TEC by power output circuit (8) output power;
Described temperature is provided with circuit (2), display driver circuit (3), temperature sampling circuit (4), PI control circuit (5), current-limiting circuit (6), power control circuit (7) and power output circuit (8); All adopt dual power supply; Power supply voltage range is ± 5V～± 16V; Positive supply VCC in each circuit and negative supply VEE's is big or small identical, opposite in sign; All integrated transporting dischargings all adopt the LM358 model in each circuit, and 8 pin of all integrated transporting dischargings all meet positive supply VCC, and the capacity earth of process 0.33u, and 4 pin of all integrated transporting dischargings all meet negative supply VEE, and the capacity earth of process 0.33u;
Described PI control circuit (5) is: 5 pin of integrated transporting discharging U3B are through resistance R 12 ground connection; And the output port " Real_T " in resistance R 11 jointing temp sample circuits (4); 6 pin are provided with the output port " Set_T " in the circuit (2) through resistance R 10 jointing temps; 6 pin connect 7 pin through resistance R 13, and 7 pin connect port " K_Full "; Port " K_Full " is the full resistance terminal of " gain-adjusted " potentiometer in the front panel (1), the zero resistance end ground connection of " gain-adjusted " potentiometer, and variable resistor end " K_ADJ " connects 5 pin of the integrated transporting discharging U4B of PI control circuit (5); 6 pin of integrated transporting discharging U4B connect 7 pin, and connect 6 pin of integrated transporting discharging U5B through resistance R 15; The 5 pin ground connection of integrated transporting discharging U5B, 6 pin connect 7 pin through resistance R 16, and 7 pin connect port " V_Sum " through resistance R 17; 7 pin of integrated transporting discharging U3B connect 2 pin of integrated transporting discharging U4A through resistance R 14; The 3 pin ground connection of integrated transporting discharging U4A, 2 foot meridian capacitor C8 connect 1 pin, and 1 pin connects port " V_Sum " through resistance R 18; Port " V_Sum " connects the input port of current-limiting circuit (6);
Described current-limiting circuit (6) is: the 3 pin ground connection of integrated transporting discharging U5A, 2 pin connect the port " V_Sum " of PI control circuit (5), and connect 1 pin through resistance R 19, and 2 pin connect the anode of voltage stabilizing diode D3; The negative electrode of voltage stabilizing diode D3 connects the negative electrode of voltage stabilizing diode D4, and the anode of voltage stabilizing diode D4 connects 1 pin of integrated transporting discharging U5A; 1 pin of integrated transporting discharging U5A connects port " C_Full " through resistance R 20; Port " C_Full " is the full resistance terminal of " current limliting presets " potentiometer in the front panel (1); The zero resistance end ground connection of " current limliting presets " potentiometer; Variable resistor termination port " C_Limit ", port " C_Limit " connects the input port of power control circuit (7);
Described power control circuit (7) is: 3 pin of integrated transporting discharging U6A connect the port " C_Limit " of current-limiting circuit (6) through resistance R 21; The 2 foot meridian capacitor C15 of integrated transporting discharging U6A connect 1 pin; 1 pin connects control port " H_Left "; And through capacitor C 16 ground connection, 1 pin connects 6 pin of integrated transporting discharging U6B through resistance R 23; The 5 pin ground connection of integrated transporting discharging U6B, 6 pin connect 7 pin through resistance R 22, and 7 pin connect control port " H_Right ", and through capacitor C 17 ground connection; 2 pin of integrated transporting discharging U7A are through resistance R 28 ground connection; 2 pin connect the port " Rs-" of power output circuit (8) through resistance R 27; 3 pin of integrated transporting discharging U7A connect the port " Rs+ " of power output circuit (8) through resistance R 26, and 3 pin connect 1 pin through resistance R 25, and 1 pin connects 2 pin of integrated transporting discharging U6A through resistance R 24;
Described power output circuit (8) is: Darlington transistor Q1, Darlington transistor Q2, Darlington transistor Q3, Darlington transistor Q4 all adopt the TIP132 model, and Darlington transistor Q5, Darlington transistor Q6, Darlington transistor Q7, Darlington transistor Q8 all adopt the TIP137 model; 2 pin of Darlington transistor Q1 meet positive supply VCC, and 1 pin connects 1 pin of Darlington transistor Q5, and connect the control port " H_`Left " of power control circuit (7) through resistance R 30; 2 pin of Darlington transistor Q2 meet positive supply VCC, and 1 pin connects 1 pin of Darlington transistor Q6, and connect the control port " H_Left " of power control circuit (7) through resistance R 29; 3 pin of Darlington transistor Q1 connect Darlington transistor Q2 3 pin, connect Darlington transistor Q5 3 pin, connect Darlington transistor Q6 3 pin, connect port " Rs+ ", connect 1 pin of port " TEC " through resistance R s; 1 pin of port " TEC " connects port " Rs-"; Port " TEC " is " TEC output " interface in the front panel (1); 2 pin of Darlington transistor Q4 meet positive supply VCC, and 1 pin connects 1 pin of Darlington transistor Q8, and connect the control port " H_Right " of power control circuit (7) through resistance R 32; 2 pin of Darlington transistor Q3 meet positive supply VCC, and 1 pin connects 1 pin of Darlington transistor Q7, and connect the control port " H_Right " of power control circuit (7) through resistance R 31; 3 pin of Darlington transistor Q4 connect Darlington transistor Q3 3 pin, connect Darlington transistor Q8 3 pin, connect Darlington transistor Q7 3 pin, connect 2 pin of port " TEC "; 2 pin of 2 pin of Darlington transistor Q5,2 pin of Darlington transistor Q6, Darlington transistor Q7 and 2 pin of Darlington transistor Q8 meet negative supply VEE.
2. according to the described wide power power consumption constraints type radiator valve of claim 1 based on TEC; It is characterized in that; Described temperature is provided with circuit (2): reference power supply D1 adopts LM336 model 2.5V power supply, the 3 pin ground connection of reference power supply D1, and 2 pin meet positive supply VCC through resistance R 1; 2 pin of reference power supply D1 connect port " T_Ref ", and port " T_Ref " is the full resistance terminal of " preset temperature " potentiometer in the front panel (1); 5 pin of integrated transporting discharging U1B connect port " T_Set "; Port " T_Set " is the variable resistor end of " preset temperature " potentiometer in the front panel (1); 6 pin of integrated transporting discharging U1B are through resistance R 2 ground connection; Connect 7 pin of integrated transporting discharging U1B through resistance R 3,7 pin of integrated transporting discharging U1B connect 3 pin of integrated transporting discharging U1A; 2 pin of integrated transporting discharging U1A connect the output port " Set_T " that 1 pin, jointing temp are provided with circuit (2); Output port " Set_T " connects 1 pin of the double-point double-throw switch S1 of ARP-2216 model in the display driver circuit (3).
3. according to the described wide power power consumption constraints type radiator valve of claim 1 based on TEC; It is characterized in that; Described display driver circuit (3) is: a termination positive supply VCC of resistance R 4, and another termination port " LED+ ", and through resistance R 5 ground connection; Port " LED+ " connects the anode of " temperature is set " and " actual temperature " two LED lights in the front panel (1); The full resistance terminal ground connection of potentiometer P1 in the display driver circuit (3); And connect 1 pin of port " Display "; 1 pin of port " Display " is the signal ground end of digital watch in the front panel (1); 2 pin of the variable resistor termination port " Display " of potentiometer P1,2 pin of port " Display " are the signal input parts of digital watch in the front panel (1), and the zero resistance end of potentiometer P1 connects 1 pin and 2 pin of integrated transporting discharging U2A through resistance R 6; 3 pin of integrated transporting discharging U2A connect 2 pin of double-point double-throw switch S1, and double-point double-throw switch S1 " shows and select " switch in the front panel (1); The 1 pin jointing temp of double-point double-throw switch S1 is provided with the output port " Set_T " in the circuit (2); Output port " Real_T " in the 3 pin jointing temp sample circuits (4); 4 pin ground connection; 5 pin connect the negative electrode of " temperature is set " LED in the front panel (1), and 6 pin connect the negative electrode of " actual temperature " LED in the front panel (1).
4. according to the described wide power power consumption constraints type radiator valve of claim 1 based on TEC; It is characterized in that; Described temperature sampling circuit (4) is: reference power supply D2 adopts LM336 model 2.5V power supply, and 3 pin of reference power supply D2 connect 5 pin of integrated transporting discharging U2B, and through resistance R 8 ground connection; 2 pin meet positive supply VCC, and connect 6 pin of integrated transporting discharging U2B through resistance R 7; 6 pin of integrated transporting discharging U2B connect the emitter of triode M1, connect 7 pin of integrated transporting discharging U2B through capacitor C 5; 7 pin of integrated transporting discharging U2B connect the base stage of triode M1 through resistance R 9; The collector of triode M1 connects 3 pin of integrated transporting discharging U3A; And connect port " NTC ", port " NTC " connects 1 pin of " NTC input " interface in the front panel (1), the 2 pin ground connection of " NTC input " interface in the front panel (1); 2 pin of integrated transporting discharging U3A connect the output terminal of integrated transporting discharging U3A, connect output port " Real_T ", and output port " Real_T " connects 3 pin of double-point double-throw switch S1 in the display driver circuit (3).
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| CN201010270102A CN101950186B (en) | 2010-09-02 | 2010-09-02 | Limited thermostat controller with wide voltage consumption based on thermoelectric refrigerating unit |
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| CN201010270102A CN101950186B (en) | 2010-09-02 | 2010-09-02 | Limited thermostat controller with wide voltage consumption based on thermoelectric refrigerating unit |
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| CN102519167A (en) * | 2011-12-20 | 2012-06-27 | 江苏飞格光电有限公司 | Linear thermoelectric cooler (TEC) driving circuit |
| CN104298277A (en) * | 2014-09-19 | 2015-01-21 | 江苏骏龙电力科技股份有限公司 | Automatic temperature control system of semiconductor laser |
| CN109656282A (en) * | 2017-10-11 | 2019-04-19 | 湖南中部芯谷科技有限公司 | A kind of optical fibre gyro thermoelectric cooling driver |
| CN110442177B (en) * | 2019-08-12 | 2020-12-25 | 中国科学技术大学 | Power supply control system |
| CN113467539B (en) * | 2021-06-09 | 2023-03-14 | 上海闻泰信息技术有限公司 | Temperature control system based on waste heat recovery, temperature control method and electronic equipment |
| CN115451638B (en) * | 2022-09-29 | 2024-01-23 | 季华实验室 | Refrigeration control method, device, equipment and readable storage medium |
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| CN2789936Y (en) * | 2002-04-25 | 2006-06-21 | 雅马哈株式会社 | Thermoelectric module packaging |
| CN101201636A (en) * | 2007-07-27 | 2008-06-18 | 吉林大学 | High-stability thermostatic controller |
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| JPH03240110A (en) * | 1990-02-16 | 1991-10-25 | Keyence Corp | Low voltage type temperature controller |
| JP2004247452A (en) * | 2003-02-13 | 2004-09-02 | Sony Corp | Laser drive control circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2789936Y (en) * | 2002-04-25 | 2006-06-21 | 雅马哈株式会社 | Thermoelectric module packaging |
| CN101201636A (en) * | 2007-07-27 | 2008-06-18 | 吉林大学 | High-stability thermostatic controller |
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| JP2004－247452A 2004.09.02 |
| JP平3-240110A 1991.10.25 |
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