CN102393769B - Sample temperature adjusting device applied to spectral analysis experiment - Google Patents
Sample temperature adjusting device applied to spectral analysis experiment Download PDFInfo
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- CN102393769B CN102393769B CN 201110401704 CN201110401704A CN102393769B CN 102393769 B CN102393769 B CN 102393769B CN 201110401704 CN201110401704 CN 201110401704 CN 201110401704 A CN201110401704 A CN 201110401704A CN 102393769 B CN102393769 B CN 102393769B
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Abstract
The invention discloses a sample temperature adjusting device applied to a spectral analysis experiment. The device is divided into two parts: a temperature adjusting box and a temperature control circuit, wherein the temperature adjusting box is used for increasing a sample temperature and a detected sample temperature; the temperature control circuit is used for realizing control of temperatureheating and temperature feedback as well as temperature presetting and displaying. More particularly, the temperature adjusting box, which is a box-shaped structure, is mainly composed of a thermal insulating layer, a movable sample support, a fixed sample support, a temperature sensor probe, a heat-resisting baffle plate, a heat-resisting baffle plate support and a heating element; and the temperature control circuit consists of a power supply circuit, a power amplification and heating circuit, an acousto-optic prompting circuit, a microprocessor control circuit, a temperature presetting anddisplay circuit and a temperature sensor module. According to the invention, beneficial effects of the device are as follows: a sample placing method is not changed and forming of a temperature gradient inside the sample can be avoided; moreover, adjustment and control on the temperature of the sample can be rapidly carried out within a certain temperature range.
Description
Technical field
The present invention relates to a kind of temperature control equipment, specifically a kind of sample temperature regulating device for the spectral analysis experiment.
Background technology
Infra-red sepectrometry is the useful means of differentiating material and amalyzing substances structure, has been widely used in Qualitative Identification and the quantitative test of various materials, and has studied intermolecular and intramolecular interaction.Infrared spectrometer has become one of most widely used instrument in the chemical analysis, the laser infrared spectrometer that develops at present, its energy is high, monochromaticity is good, sensitivity is high, is widely used in recent years the fields such as medicine, oil, chemical industry, environmental protection, food, material, public security, national defence, semiconductor, optics.Some laboratory samples have certain susceptibility to temperature, and there is certain difference in its spectral characteristic under the different temperatures, and this is utilized in laser infrared spectrometer experiment the analysis to the sample composition.Therefore, need to a kind ofly can carry out liter attachment device of (falling) gentle temperature control to laboratory sample.The technology that in the past changed the solid sample temperature is with heat generating member solid sample directly to be heated, but mainly there are two deficiencies in this technology: the one, change the original method of placing of sample, and inconvenient operation; The 2nd, because heater strip is to place the laboratory sample edge, heat is transmitted to the sample center from sample edge and has no small thermograde, and the time that will make sample edge and the temperature of center reach consistent required wait is no less than 15 minutes usually, and this has just reduced conventional efficient.
Summary of the invention
The object of the present invention is to provide a kind of sample temperature regulating device for the spectral analysis experiment.
The technical scheme that the present invention solves the problems of the technologies described above is as follows:
A kind of sample temperature for the spectral analysis experiment is transferred device, and this device is divided into the two large divisions: the one, and the temperature adjustment box that can be used for increasing sample temperature and survey sample temperature, the 2nd, realize temperature heating and temperature feedback control and the default temperature control circuit that shows of temperature.
1. temperature adjustment box is a box structure, mainly formed by thermofin, movable sample holder, fixed sample support, temperature sensor probe, thermal resistance baffle plate, thermal resistance barrier support, heat generating member seven parts, the opposing sidewalls of box is split a pair of aperture, and the box wall is thermofin; In the box: the thermal resistance barrier support is located on the box bottom surface or is positioned on the box wall or is hung on the lid, the thermal resistance barrier support plays fixedly the thermal resistance baffle plate and makes the thermal resistance baffle plate at the bottom of box certain distance be arranged, temperature sensor probe and fixed sample support are separately fixed on the thermal resistance baffle plate, movable sample holder inserts on the fixed sample support, and heat generating member is placed under the thermal resistance baffle plate but does not contact at the bottom of thermal resistance baffle plate and the box;
2. temperature control circuit is preset with display circuit and temperature sensor module six parts by power circuit, power amplification and heater circuit, acousto-optic hint circuit, microprocessor control circuit, temperature and is consisted of.
1) effect of power amplification and heater circuit is that the pwm signal that microprocessor sends is carried out power amplification, obtains high-power controlled current flow driving heating resistor and generates heat to realize heating function.This part circuit is comprised of resistance R 1, resistance R 3, large power triode Q1, optocoupler U3 and resistive heater R9 (being heating member).The value of these elements (or parameter) is: large power triode Q1 is TIP35, resistance R 1=5.1k Ω, R3=300 Ω.Connected mode is: the negative electrode contact resistance R3 of optocoupler U3, anodic bonding are to power supply 5V, and the collector of optocoupler U3, emitter are connected respectively to collector and the base stage of triode Q1; Resistance R 1 is connected between the base stage and emitter of triode Q1; Triode Q1 emitter connects resistive heater R9 one end.
2) the default effect with display circuit of temperature is to set the required temperature value of experimentation for the user, and can show in real time temperature value and the interior current actual temperature (displayed value resolution is 0.1 degree centigrade) of temperature adjustment box that the user sets.This part circuit is comprised of little liquid crystal J2, button S2, button S3, button S4, resistance R 10, resistance R 11, resistance R 12 and potentiometer R13 etc.The value of these elements (or parameter) is: resistance R 10, R11, R12, R13 are 10k Ω, and J2 is 1602 blue little LCDs backlight, and button is the 8*8mm button.Connected mode is: resistance R 10, R11, R12 one end are with receiving the 5V power supply, and the other end connects respectively S4, S3, S2; The other end of button S2, S3, S4 all connects power supply ground; The first pin and the 15 pin of 1602 blue little LCDs J2 backlight are connected to power supply ground, and the second pin and the 16 pin of J2 are connected to the 5V power supply, and the 3rd pin connects potentiometer R13; The other two ends of potentiometer R13 connect respectively power supply ground and 5V power supply.
3) effect of microprocessor control circuit is the temperature value of reading temperature sensor module, gathers the information of button, controls 1602 LCDs J2 and shows relevant information.By the action to button, the information such as temperature sensor module temperature value are carried out operational analysis and are sent relevant pwm signal, thereby the control heater circuit is realized heating and temperature incubation function.This part circuit is comprised of single-chip microcomputer U1, crystal oscillator Y1, capacitor C 3, capacitor C 7, capacitor C 8, button S1, resistance R 7, resistance R 8, program updates interface J1.Their value (or parameter) is: capacitor C 3=1 μ F, C7=30pF, C8=30pF, R7=10k Ω, R8=1k Ω, Y1=12MHz.Connected mode is: crystal oscillator Y1 is parallel to X1, the X2 pin of U1, and capacitor C 7 and C8 one end are connected respectively to X1, the X2 pin of U1, and the other end is connected to power supply ground together; Capacitor C 7, C8, crystal oscillator Y1 consist of the work clock circuit of single-chip microcomputer with the not gate of single-chip microcomputer U1 inside; Capacitor C 3 and resistance R 7 are connected to the 5V power supply with an end after button S1 is in parallel, and the other end is connected to the 9th pin of resistance R 8 and single-chip microcomputer U1 and the 3rd pin of program updates interface J1, and the other end of resistance R 8 then connects power supply ground; Capacitor C 3, resistance R 7 and R8 consist of electrification reset and the manual reset circuit of single-chip microcomputer U1 with button S1; The first pin of J1 connects power supply ground, and the second pin of J1 connects the 5V power supply, and the 3rd, the 4th, the 5th, the 6th pin of J1 connects respectively the 9th, the 8th, the 7th, the 6th pin of U1; The 31 pin of U1 connects the 5V power supply.
4) temperature sensor module is to gather the inner real time temperature of heating cabinet with temperature sensor probe (see among Fig. 1 5), and this information is fed back to microprocessor control circuit forms feedback circuit.Temperature sensor module is provided with the first pin, the second pin, the 3rd pin, and the first pin is connected to the 5V power supply, the second pin is that data pin, the 3rd pin connect power supply ground.
5) its effect of power circuit is for microprocessor control circuit, temperature sensor module etc. provides the 5V stabilized voltage supply, for power amplification and heater circuit provide the 24V large power supply.This part circuit is by transformer T1, diode D2, D3, D4, D5, D6, D7, D8, D9, and capacitor C 1, C2, C4, C5, C6, C9, three end integrated voltage-stabilized pipe U2 form.Their value (or parameter) is: U2 is MC7805; T1 power is 5W, the AC transformer of output 24V and 6V voltage; C1 is 3300 μ F25V electrolyte capacitances, and C4 is 3300 μ F50V electrolyte capacitances, and C5, C6 and C9 are 0.1 μ F ceramic condenser; Diode D2, D3, D4, D5, D6, D7, D8 and D9 are 6N10.Connected mode is: the 24V of transformer T1 exchanges the input end that output winding is connected to the rectifier bridge that is made of diode D3, D4, D5, D6, and the output terminal of rectifier bridge is then in parallel with capacitor C 4 and C9; The interchange output winding of transformer T1 is connected to the input end of another rectifier bridge that is made of diode D2, D7, D8, D9, its output terminal shunt capacitance C1 and C5, obtain stably that direct supply is input to the first pin of three end integrated voltage-stabilized pipe U2 and the 5V power supply of the second pin (ground connection), the second pin and the 3rd pin shunt capacitance C2 and C6 stable output, for the rear class control circuit provides power supply.
6) its effect of acousto-optic hint circuit is to have reached the temperature of setting in the reminding user temperature controlled compartment and kept temperature constant state.When having reached the temperature of setting in the temperature controlled compartment and having kept constant temperature, hummer can send the tinkle of bells, and light emitting diode can brighten, and carries out associative operation with reminding user.This part circuit light emitting diode D0, resistance R 2, R4, R5, triode Q2, hummer form.Their value (or parameter) is that D0 is the 5mm diode that glows.Resistance R 2=300 Ω, R4=100 Ω, R5=1k Ω, hummer are the 5V active buzzer.Connected mode is: the anodic bonding of light emitting diode D0 is to the 5V power supply, negative electrode resistance in series R2; The electrode input end of hummer is connected to the 5V power supply, is connected to the collector of triode Q2 behind the negative input resistance in series R4; The emitter of triode Q2 connects power ground, and base stage is connected with resistance R 5.
7) connection between each circuit
Power circuit is received respectively large power triode Q1 collector and resistive heater R9 one end of power amplification and heater circuit through capacitor C 4 and the filtered direct current positive and negative electrode of C9; Power amplification is connected the 3rd pin of the single-chip microcomputer U1 of microprocessor control circuit with the resistance R 3 of heater circuit; The resistance R 2 of acousto-optic hint circuit and R5 connect respectively single-chip microcomputer U1 the second pin and first pin of microprocessor control circuit; Single-chip microcomputer U1 the 15 pin of the second pin of temperature sensor module and microprocessor control circuit joins; Temperature is default to connect respectively the 37 pin, the 38 pin, the 39 pin of the single-chip microcomputer U1 of microprocessor control circuit with button S2, the S3 of display circuit, the end of S4, and the 4th pin of LCDs J2～the 14 pin connects respectively the 34 pin, the 33 pin, the 32 pin, the 21 pin～the 28 pin of the single-chip microcomputer U1 of microprocessor control circuit.
Temperature adjustment box is connected with temperature control circuit: the temperature sensor probe wiring of temperature adjustment box is connected to the temperature sensor module internal circuit, and in fact temperature sensor module has comprised temperature sensor probe; The heat generating member wiring of temperature adjustment box is connected to power amplification and heater circuit internal circuit, and in fact power amplification and heater circuit have comprised heat generating member.
The invention has the beneficial effects as follows:
1. the present invention is a kind of formation that the sample laying method can be avoided again the sample interior thermograde that neither changes, and in certain temperature range, can carry out quickly the device of regulation and control to the temperature of sample.
2. apparatus of the present invention can be warming up to preset temperature to sample automatically in a controlled temperature space, have automatic prompting function, do not cause the sample interior thermograde, do not change original sample modes of emplacement, and linear effective temperature scope is at-200～850C °.
3. apparatus of the present invention not only are used for the experiment of spectral technique sample analysis of components, such as the experiment of infrared spectrum technology biological sample analysis of components, also can be used for the scientific experiment that other need to be measured and analyze laboratory sample under different temperatures.
Description of drawings
Fig. 1 is temperature adjustment box structural representation of the present invention.
Among the figure: a pair of aperture 4, temperature sensor probe 5, thermal resistance baffle plate 6, thermal resistance barrier support 7, heat generating member 8, temperature sensor probe wiring 9, heat generating member wiring 10 are arranged on thermofin 1, movable sample holder 2, fixed sample support 3, the temperature adjustment box.
Fig. 2 is temperature adjustment box structure vertical view of the present invention.
Among the figure: thermofin 1, movable sample holder 2, fixed sample support 3, temperature sensor probe 5, thermal resistance baffle plate 6, temperature sensor probe wiring 9, heat generating member wiring 10.
Fig. 3 is its temperature control circuit figure.
Among the figure: power circuit 11, power amplification and heater circuit 12, acousto-optic hint circuit 13, microprocessor control circuit 14, temperature is preset and display circuit 15, temperature sensor module 16, U1 pin 1～19,21～39, U2 pin 1,2,3, the pin 1～6 of J1, the pin 1～16 of J2, the pin 1,2,3 of temperature sensor module 16.
Embodiment
The invention will be further described with enforcement below in conjunction with accompanying drawing.
The temperature adjustment box structure as depicted in figs. 1 and 2, temperature adjustment box is a box structure, mainly formed by thermofin 1, movable sample holder 2, fixed sample support 3, temperature sensor probe 5, thermal resistance baffle plate 6, thermal resistance barrier support 7, heat generating member 8 seven parts, the opposing sidewalls of box is split a pair of aperture 4, and the box wall is that thermofin 1 is made by the material (such as asbestos, porous ceramics etc.) that can tolerate certain high temperature.In the box: thermal resistance barrier support 7 is located on the box bottom surface (or be positioned on the box wall or be hung on the lid), thermal resistance barrier support 7 plays fixedly thermal resistance baffle plate 6 and makes the thermal resistance baffle plate at the bottom of box certain distance be arranged, temperature sensor probe 5 and fixed sample support 3 are separately fixed on the thermal resistance baffle plate 6, movable sample holder 2 inserts on fixed sample support 3, and heat generating member 8 is placed under the thermal resistance baffle plate 6 but does not contact at the bottom of thermal resistance baffle plate and the box.
Temperature control circuit as shown in Figure 3, temperature control circuit by power circuit 11, power amplification and heater circuit 12, acousto-optic hint circuit 13, microprocessor control circuit 14, temperature is default consists of with display circuit 15, temperature sensor module 16 6 parts.
1. the effect of power amplification and heater circuit 12 is that the pwm signal that microprocessor sends is carried out power amplification, obtains high-power controlled current flow driving heating resistor and generates heat to realize heating function.This part circuit is comprised of resistance R 1, resistance R 3, large power triode Q1, optocoupler U3 and resistive heater R9 (being the heating member 8 among Fig. 1).The value of these elements (or parameter) is: large power triode Q1 is TIP35, resistance R 1=5.1k Ω, R3=300 Ω.Connected mode is: optocoupler U3 negative input resistance in series R3, and the negative electrode contact resistance R3 of optocoupler U3, anodic bonding are to power supply 5V, and the collector of optocoupler U3, emitter are connected respectively to collector and the base stage of triode Q1; Resistance R 1 is connected between the base stage and emitter of triode Q1; Triode Q1 emitter connects resistive heater R9 one end.
2. the default effect with display circuit 15 of temperature is to set the required temperature value of experimentation for the user, and can show in real time temperature value and the interior current actual temperature (displayed value resolution is 0.1 degree centigrade) of temperature adjustment box that the user sets.This part circuit is comprised of little liquid crystal J2, button S2, button S3, button S4, resistance R 10, resistance R 11, resistance R 12 and potentiometer R13 etc.The value of these elements (or parameter) is: resistance R 10, R11, R12, R13 are 10k Ω, and J2 is 1602 blue little LCDs backlight, and button is the 8*8mm button.Connected mode is: resistance R 10, R11, R12 one end are with receiving the 5V power supply, and the other end connects respectively S4, S3, S2; The other end of button S2, S3, S4 all connects power supply ground; Pin 1 and the pin 15 of 1602 blue little LCDs J2 backlight are connected to power supply ground, and pin 2 and pin 16 are connected to the 5V power supply, and pin 3 connects potentiometer R13; The other two ends of potentiometer R13 connect respectively power supply ground and 5V power supply.
3. the effect of microprocessor control circuit 14 is temperature values of reading temperature sensor module 16, gathers the information of button, controls 1602 LCDs J2 and shows relevant information.By the action to button, the information such as temperature sensor module 16 temperature values are carried out operational analysis and are sent relevant pwm signal, thereby control heating part circuit is realized heating and temperature incubation function.This part circuit is comprised of single-chip microcomputer U1, crystal oscillator Y1, capacitor C 3, capacitor C 7, capacitor C 8, button S1, resistance R 7, resistance R 8, program updates interface J1.Their value (or parameter) is: capacitor C 3=1 μ F, C7=30pF, C8=30pF, R7=10k Ω, R8=1k Ω, Y1=12MHz.Connected mode is: crystal oscillator Y1 is parallel to X1, the X2 pin of U1, and capacitor C 7 and C8 one end are connected respectively to X1, the X2 pin of U1, and the other end is connected to power supply ground together; Capacitor C 7, C8, crystal oscillator Y1 consist of the work clock circuit of single-chip microcomputer with the not gate of single-chip microcomputer U1 inside; Capacitor C 3 and resistance R 7 are connected to the 5V power supply with an end after button S1 is in parallel, and the other end is connected to the pin 9 of resistance R 8 and single-chip microcomputer U1 and the pin 3 of program updates interface J1, and the other end of resistance R 8 then connects power supply ground; Capacitor C 3, resistance R 7 and R8 consist of electrification reset and the manual reset circuit of single-chip microcomputer U1 with button S1; The pin 1 of J1 connects power supply ground, and pin 2 connects the 5V power supply, and pin 3,4,5,6 connects respectively U1 pin 9,8,7,6; U1 pin 31 connects the 5V power supply.
4. temperature sensor module 16 is to gather the inner real time temperature of heating cabinet with temperature sensor probe (see among Fig. 1 5), and this information is fed back to microprocessor control circuit forms feedback circuit.The pin 1 of temperature sensor module 16 is connected to the 5V power supply, and pin 2 is data pin, and pin 3 connects power supply ground.
5. power circuit 11 its effects are for microprocessor control circuit part 14, temperature sensor module 16 etc. provides the 5V stabilized voltage supply, for power amplification and heater circuit part 12 provide the 24V large power supply.This part circuit is by transformer T1, diode D2, D3, D4, D5, D6, D7, D8, D9, and capacitor C 1, C2, C4, C5, C6, C9, three end integrated voltage-stabilized pipe U2 form.Their value (or parameter) is: U2 is MC7805; T1 power is 5W, the AC transformer of output 24V and 5V voltage; C1 is 3300 μ F25V electrolyte capacitances, and C4 is 3300 μ F50V electrolyte capacitances, and C5, C6 and C9 are 0.1 μ F ceramic condenser; Diode D2, D3, D4, D5, D6, D7, D8 and D9 are 6N10.Connected mode is: the 24V of transformer T1 exchanges the input end that output winding is connected to the rectifier bridge that is made of diode D3, D4, D5, D6, and the output terminal of rectifier bridge is then in parallel with capacitor C 4 and C9; The interchange output winding of transformer T1 is connected to the input end of another rectifier bridge that is made of diode D2, D7, D8, D9, its output terminal shunt capacitance C1 and C5, obtain pin 1 and pin 2 (ground connection) that direct supply stably is input to three end integrated voltage-stabilized pipe U2, the 5V power supply of pin 2 and 3 shunt capacitance C2 and C6 stable output is for the rear class control circuit provides power supply.
6. 13 its effects of acousto-optic hint circuit are to have reached the temperature of setting in the reminding user temperature controlled compartment and kept temperature constant state.When having reached the temperature of setting in the temperature controlled compartment and having kept constant temperature, hummer can send the tinkle of bells, and light emitting diode can brighten, and carries out associative operation with reminding user.This part circuit light emitting diode D0, resistance R 2, R4, R5, triode Q2, hummer form.Their value (or parameter) is that D0 is the 5mm diode that glows.Resistance R 2=300 Ω, R4=100 Ω, R5=1k Ω, hummer are the 5V active buzzer.Connected mode is: the anodic bonding of light emitting diode D0 is to the 5V power supply, negative electrode resistance in series R2; The electrode input end of hummer is connected to the 5V power supply, is connected to the collector of triode Q2 behind the negative input resistance in series R4; The emitter of triode Q2 connects power ground, and base stage is connected with resistance R 5.
To connect like this between 11～16 each several part circuit:
Temperature adjustment box is connected with temperature control circuit: the temperature sensor probe wiring 9 of temperature adjustment box is connected to temperature sensor module 16 internal circuits, and in fact temperature sensor module 16 has comprised temperature sensor probe 5; The heat generating member wiring 10 of temperature adjustment box is connected to power amplification and heater circuit 12 internal circuits, and in fact power amplification and heater circuit 12 have comprised heat generating member 8.
Implementation of the present invention is as follows:
Thermofin 1 is made by the material (such as asbestos, porous ceramics etc.) that can tolerate certain high temperature.After fixed sample support 3, heat generating member 8, thermal resistance baffle plate 6 and temperature sensor probe 5 form one, be fixed on the box inner bottom part.Laboratory sample is inserted in the travel(l) ing rest 2, and 2 of movable sample holders insert on fixed sample support 3.A pair of aperture 4 is arranged on the temperature adjustment box, and light beam can be injected from one of them aperture, passes behind the sample and penetrates from another aperture of splitting.Supply with heat generating member 8 (can be heating wire or electric hot plate) from the electric current of control circuit (seeing Fig. 3) through heat generating member wiring 10 and produce heat, and indirectly sample is heated by the mode of air transmitted and convection current.The thermal resistance baffle plate 6 of being made by heat-barrier material stops that the heat that heat generating member 8 sends directly is radiated on sample and movable sample holder 2 and the fixed sample support 3.Thermal resistance barrier support 7 makes thermal resistance baffle plate 6 fixing and make and leave certain space below the thermal resistance baffle plate 6 and settle heat generating member 8.Be positioned near the air themperature of sample 5 pairs of samples of temperature sensor probe on one side and survey, feed back to control circuit by its temperature sensor probe wiring 9 of drawing.Because be by air sample to be heated, and sample itself is very thin, sample thermograde everywhere is very little, the difference of the temperature of air and the temperature of sample is also very little, so the temperature of temperature sensor probe 5 air that detects just is equal to the temperature of sample.
Claims (1)
1. one kind is used for the sample temperature regulating device that spectral analysis is tested, it is characterized in that, apparatus of the present invention are divided into the two large divisions: the one, and the temperature adjustment box that can be used for increasing sample temperature and survey sample temperature, the 2nd, realize temperature heating and temperature feedback control and the default temperature control circuit that shows of temperature;
1) temperature adjustment box is a box structure, mainly formed by thermofin, movable sample holder, fixed sample support, temperature sensor probe, thermal resistance baffle plate, thermal resistance barrier support, heat generating member seven parts, the opposing sidewalls of box is split a pair of aperture, and the box wall is thermofin; In the box: the thermal resistance barrier support is located on the box bottom surface or is positioned on the box wall or is hung on the lid, the thermal resistance barrier support plays fixedly the thermal resistance baffle plate and makes the thermal resistance baffle plate at the bottom of box certain distance be arranged, temperature sensor probe and fixed sample support are separately fixed on the thermal resistance baffle plate, movable sample holder inserts on the fixed sample support, and heat generating member is placed under the thermal resistance baffle plate but does not contact at the bottom of thermal resistance baffle plate and the box;
2) temperature control circuit is preset with display circuit, temperature sensor module six parts by power circuit, power amplification and heater circuit, acousto-optic hint circuit, microprocessor control circuit, temperature and is consisted of;
(1) power amplification and heater circuit
The effect of power amplification and heater circuit is that the pwm signal that microprocessor sends is carried out power amplification, obtain high-power controlled current flow driving heating resistor and generate heat to realize heating function, this part circuit is that heating member forms by resistance R 1, resistance R 3, large power triode Q1, optocoupler U3 and resistive heater R9; The value of these elements is: large power triode Q1 is TIP35, resistance R 1=5.1k Ω, R3=300 Ω; Connected mode is: the negative electrode contact resistance R3 of optocoupler U3, anodic bonding are to power supply 5V, and the collector of optocoupler U3, emitter are connected respectively to collector and the base stage of triode Q1; Resistance R 1 is connected between the base stage and emitter of triode Q1; Triode Q1 emitter connects resistive heater R9 one end;
(2) temperature is preset and display circuit
The default effect with display circuit of temperature is to set the required temperature value of experimentation for the user, and shows in real time temperature value and the interior current actual temperature of temperature adjustment box that the user sets, and displayed value resolution is 0.1 degree centigrade; This part circuit is comprised of little liquid crystal J2, button S2, button S3, button S4, resistance R 10, resistance R 11, resistance R 12 and potentiometer R13; The value of these elements is: resistance R 10, R11, R12, R13 are 10k Ω, and J2 is 1602 blue little LCDs backlight, and button is the 8*8mm button; Connected mode is: resistance R 10, R11, R12 one end are with receiving the 5V power supply, and the other end connects respectively S4, S3, S2; The other end of button S2, S3, S4 all connects power supply ground; The first pin and the 15 pin of 1602 blue little LCDs J2 backlight are connected to power supply ground, and the second pin and the 16 pin of J2 are connected to the 5V power supply, and the 3rd pin connects potentiometer R13; The other two ends of potentiometer R13 connect respectively power supply ground and 5V power supply;
(3) microprocessor control circuit
The effect of microprocessor control circuit is the temperature value of reading temperature sensor module, gathers the information of button, controls 1602 LCDs J2 and shows relevant information; By the action to button, temperature sensor module temperature value information is carried out operational analysis and is sent relevant pwm signal, thereby the control heater circuit is realized heating and temperature incubation function, and this part circuit is comprised of single-chip microcomputer U1, crystal oscillator Y1, capacitor C 3, capacitor C 7, capacitor C 8, button S1, resistance R 7, resistance R 8, program updates interface J1; Their value is: capacitor C 3=1 μ F, C7=30pF, C8=30pF, R7=10k Ω, R8=1k Ω, Y1=12MHz; Connected mode is: crystal oscillator Y1 is parallel to X1, the X2 pin of U1, and capacitor C 7 and C8 one end are connected respectively to X1, the X2 pin of U1, and the other end is connected to power supply ground together; Capacitor C 7, C8, crystal oscillator Y1 consist of the work clock circuit of single-chip microcomputer with the not gate of single-chip microcomputer U1 inside; Capacitor C 3 and resistance R 7 are connected to the 5V power supply with an end after button S1 is in parallel, and the other end is connected to the 9th pin of resistance R 8 and single-chip microcomputer U1 and the 3rd pin of program updates interface J1, and the other end of resistance R 8 then connects power supply ground; Capacitor C 3, resistance R 7 and R8 consist of electrification reset and the manual reset circuit of single-chip microcomputer U1 with button S1; The first pin of J1 connects power supply ground, and the second pin of J1 connects the 5V power supply, and the 3rd, the 4th, the 5th, the 6th pin of J1 connects respectively the 9th, the 8th, the 7th, the 6th pin of U1; The 31 pin of U1 connects the 5V power supply;
(4) temperature sensor module
Temperature sensor module is to gather the inner real time temperature of heating cabinet with temperature sensor probe, and this information is fed back to microprocessor control circuit formation feedback circuit; Temperature sensor module is provided with the first pin, the second pin, the 3rd pin, and the first pin is connected to the 5V power supply, the second pin is that data pin, the 3rd pin connect power supply ground;
(5) power circuit
Its effect of power circuit is for microprocessor control circuit, temperature sensor module provide the 5V stabilized voltage supply, for power amplification and heater circuit provide the 24V large power supply; This part circuit is by transformer T1, diode D2, D3, D4, D5, D6, D7, D8, D9, and capacitor C 1, C2, C4, C5, C6, C9, three end integrated voltage-stabilized pipe U2 form; Their value is: U2 is MC7805; T1 is that power is 5W, the AC transformer of output 24V and 5V voltage; C1 is 3300 μ F25V electrolyte capacitances, and C4 is 3300 μ F50V electrolyte capacitances, and C5, C6 and C9 are 0.1 μ F ceramic condenser; Diode D2, D3, D4, D5, D6, D7, D8 and D9 are 6N10; Connected mode is: the 24V of transformer T1 exchanges the input end that output winding is connected to the rectifier bridge that is made of diode D3, D4, D5, D6, and the output terminal of rectifier bridge is then in parallel with capacitor C 4 and C9; The interchange output winding of transformer T1 is connected to the input end of another rectifier bridge that is made of diode D2, D7, D8, D9, its output terminal shunt capacitance C1 and C5, obtain stably that direct supply is input to the first pin of three end integrated voltage-stabilized pipe U2 and the 5V power supply of the second pin-ground connection, the second pin and the 3rd pin shunt capacitance C2 and C6 stable output, for the rear class control circuit provides power supply;
(6) acousto-optic hint circuit
Its effect of acousto-optic hint circuit is to have reached the temperature of setting in the reminding user temperature controlled compartment and kept temperature constant state; When having reached the temperature of setting in the temperature controlled compartment and having kept constant temperature, hummer can send the tinkle of bells, and light emitting diode can brighten, and carries out associative operation with reminding user; This part circuit is comprised of light emitting diode D0, resistance R 2, R4, R5, triode Q2, hummer; Their value is that D0 is the 5mm diode that glows, and resistance R 2=300 Ω, R4=100 Ω, R5=1k Ω, hummer are the 5V active buzzer; Connected mode is: the anodic bonding of light emitting diode D0 is to the 5V power supply, negative electrode resistance in series R2; The electrode input end of hummer is connected to the 5V power supply, is connected to the collector of triode Q2 behind the negative input resistance in series R4; The emitter of triode Q2 connects power ground, and base stage is connected with resistance R 5;
(7) connection between each circuit
Power circuit is received respectively large power triode Q1 collector and resistive heater R9 one end of power amplification and heater circuit through capacitor C 4 and the filtered direct current positive and negative electrode of C9; Power amplification is connected the 3rd pin of the single-chip microcomputer U1 of microprocessor control circuit with the resistance R 3 of heater circuit; The resistance R 2 of acousto-optic hint circuit and R5 connect respectively single-chip microcomputer U1 the second pin and first pin of microprocessor control circuit; Single-chip microcomputer U1 the 15 pin of the second pin of temperature sensor module and microprocessor control circuit joins; The end of default button S2, S3, the S4 with display circuit of temperature connect respectively microprocessor control circuit single-chip microcomputer U1 the 37, the 38, the 4th pin to the 14 pins of the 39 pin, LCDs J2 connect respectively the 34 pin, the 33 pin, the 32 pin, the 21 pin to the 28 pins of the single-chip microcomputer U1 of microprocessor control circuit;
3) temperature adjustment box and temperature control circuit is connected
The temperature sensor probe wiring of temperature adjustment box is connected to the temperature sensor module internal circuit, and in fact temperature sensor module has comprised temperature sensor probe; The heat generating member wiring of temperature adjustment box is connected to power amplification and heater circuit internal circuit, and in fact power amplification and heater circuit have comprised heat generating member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110401704 CN102393769B (en) | 2011-12-06 | 2011-12-06 | Sample temperature adjusting device applied to spectral analysis experiment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110401704 CN102393769B (en) | 2011-12-06 | 2011-12-06 | Sample temperature adjusting device applied to spectral analysis experiment |
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| CN102393769A CN102393769A (en) | 2012-03-28 |
| CN102393769B true CN102393769B (en) | 2013-09-18 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102645941A (en) * | 2012-04-26 | 2012-08-22 | 苏州市金翔钛设备有限公司 | Temperature controllable heating cabinet |
| CN105244750B (en) * | 2015-10-12 | 2018-07-06 | 哈尔滨工业大学 | The heavy caliber crystal double frequency conversion equipment of crystal temperature effect regulation and control is realized under vacuum environment |
| CN105223978B (en) * | 2015-10-12 | 2017-06-13 | 哈尔滨工业大学 | A kind of use constant temperature water-cycling mode realizes the casing of temperature adjusting function |
| CN105226497B (en) * | 2015-10-12 | 2018-07-03 | 哈尔滨工业大学 | A kind of heavy caliber crystal double frequency conversion equipment of controllable crystal temperature effect |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1221419A (en) * | 1967-03-02 | 1971-02-03 | Perkin Elmer Ltd | Temperature control apparatus |
| CN1069806A (en) * | 1992-06-25 | 1993-03-10 | 厦门大学 | In-situ Infrared spectrum specimen chamber |
| CN1742678A (en) * | 2004-08-31 | 2006-03-08 | 上海雷硕医疗器械有限公司 | Thermostat for low-light quick-acting spectrum analysing assembly in medical laser medical laser diagnosis instrument |
| CN201698239U (en) * | 2010-03-22 | 2011-01-05 | 江苏惠通集团有限责任公司 | MEMS spectrometer constant temperature control device |
-
2011
- 2011-12-06 CN CN 201110401704 patent/CN102393769B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1221419A (en) * | 1967-03-02 | 1971-02-03 | Perkin Elmer Ltd | Temperature control apparatus |
| CN1069806A (en) * | 1992-06-25 | 1993-03-10 | 厦门大学 | In-situ Infrared spectrum specimen chamber |
| CN1742678A (en) * | 2004-08-31 | 2006-03-08 | 上海雷硕医疗器械有限公司 | Thermostat for low-light quick-acting spectrum analysing assembly in medical laser medical laser diagnosis instrument |
| CN201698239U (en) * | 2010-03-22 | 2011-01-05 | 江苏惠通集团有限责任公司 | MEMS spectrometer constant temperature control device |
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