CN206975459U - Two-component metal phase diagram experimental provision based on Single chip microcomputer temperature control system - Google Patents
Two-component metal phase diagram experimental provision based on Single chip microcomputer temperature control system Download PDFInfo
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- CN206975459U CN206975459U CN201720853059.4U CN201720853059U CN206975459U CN 206975459 U CN206975459 U CN 206975459U CN 201720853059 U CN201720853059 U CN 201720853059U CN 206975459 U CN206975459 U CN 206975459U
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- China
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- chip microcomputer
- control system
- phase diagram
- temperature control
- metal phase
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Abstract
It the utility model is related to a kind of two-component metal phase diagram experiment dress based on Single chip microcomputer temperature control system, including single-chip microcomputer, temperature sensor, A/D converter, key circuit, heater, the first relay, the second relay and cooler, temperature sensor is connected by A/D converter with single-chip microcomputer, key circuit is connected with single-chip microcomputer, single-chip microcomputer is connected by the first relay with heater, and single-chip microcomputer is connected by the second relay with cooler.Solves difficult, complicated, pollution environment the technical problem of existing two-component metal phase diagram experimental provision, the utility model is based on semiconductor refrigerating, heating technology combination with the MCU, realizes temperature control.
Description
Technical field
The utility model belongs to equipment of chemical industry field, and in particular to a kind of double based on Single chip microcomputer temperature control system
Component metal phase diagram experimental provision.
Background technology
Thermal analysis system is a kind of analytic approach in physical chemistry, is one of basic skills of drawing diagram, and it is to be based on thing
With the principle of fuel factor when matter is undergone phase transition.Melt (metal, alloy or compound) is in uniform cooling, if not occurring any
Then system temperature uniformly declines for phase transformation.If there occurs phase transformation, system temperature change in cooling procedure just to show inequality
Weighing apparatus, and cause horizontal line section or turning point occurs on cooling (or heating) curve (time curve of temperature one).It is physico
Learn in experiment, Binary Alloy System phasor is obtained often through the cooling curve for making sample.Under level pressure by system from high temperature by
Gradually cool down, make change curve of the temperature to the time, as cooling curve.If system has phase transformation, must along with fuel factor, i.e., from
Turning point occurs in cooling curve.
The conventional way of cooling curve is that sample cell is placed in hot plate, slow heating, after sample is completely melt
Clamp sample cell to be gently agitated for, make to form uniformity in pipe everywhere, one layer of graphite is also all equably covered with sample surfaces
Powder.Thermocouple is fixed on sample cell center, about 3cm under sample liquid level is inserted in hot junction, but should be not less than 1cm with ttom of pipe distance,
To avoid ectocine.Control for Kiln Temperature raises 50 DEG C again after with sample all fusing to be advisable i.e. 320-350 DEG C.With pressure regulator control
The cooldown rate of electric furnace processed, it is usually per minute to decline 6 one 8 DEG C.A temperature is read every 30s, until temperature drops to 110 DEG C
Terminate.
This method has the drawback that：
1st, the residual temperature of hot plate is utilized when the temperature that sensor is shown reaches 80-90 DEG C it is necessary to turn off hot plate
To allow sample to be completely melt.The purpose for the arrangement is that in order to protect thermocouple.But the fact is, for using this instrument for the first time
People for, even if drumming in prompting to them, they heat temperature can all be far above set point of temperature, cause each time with
A large amount of thermocouples are burned, scrapped；
2nd, two component alloy phase diagram devices of current market sale, it is not only on the high side, and design relative complex.Machinery
During part machine operation, noise is big, abrasion is big, has pollution to environment；
3rd, original equipment does not have fast-refrigerating program, and this causes every group of meter that must gather five groups of experimental datas in the original plan
Draw, be compressed to two groups.And experimental period is long, demand rapidly and efficiently at present is not met.
The content of the invention
In order to solve difficult, complicated, pollution environment the technical problem of existing two-component metal phase diagram experimental provision, this
Utility model provides a kind of two-component metal phase diagram experimental provision based on Single chip microcomputer temperature control system.The utility model is based on
Semiconductor refrigerating, heating technology combination with the MCU, realize temperature control.
Technical solution of the present utility model：
Two-component metal phase diagram experimental provision based on Single chip microcomputer temperature control system, including single-chip microcomputer, temperature sensor,
A/D converter, key circuit, heater, the first relay, the second relay and cooler, the temperature sensor lead to
Cross A/D converter to be connected with single-chip microcomputer, the key circuit is connected with single-chip microcomputer, and the single-chip microcomputer is by the first relay with adding
Thermal is connected, and the single-chip microcomputer is connected by the second relay with cooler.
Said temperature sensor is PT100 thermal resistances.
Above-mentioned A/D converter is MAX6675 modulus conversion chips.
Above-mentioned single-chip microcomputer is STC89C52 chips.
Above-mentioned heater is hot plate.
Above-mentioned cooler is semiconductor chilling plate.
Also include warning device, the warning device is connected with single-chip microcomputer.
Also include LCD display, the LCD display is connected with single-chip microcomputer.
Above-mentioned button electric furnace includes four buttons, and the size of two regulation ceiling temperatures, two adjust the big of lower limit temperature
It is small.
Also include 12V power supplys and L7805 voltage stabilizing chips, the 12V power supplys are supplied by L7805 voltage stabilizing chips to single-chip microcomputer
Electricity.
The utility model is advantageously：
1st, experimental provision of the present utility model is mainly made up of two parts one is cooling down, heating, the second is utilizing
Monolithic processor controlled power-supply system, when temperature control system needs refrigeration, single-chip microcomputer controls the second relay adhesive to connect electricity
Source, semiconductor chilling plate is the test tube cooling equipped with alloy, so as to reach refrigeration；When temperature control system needs to heat
When, single-chip microcomputer controls the first relay adhesive to connect heating piece, so as to reach heating effect.Structure is very simple, without machinery
Moving component, without noise, without abrasion, no pollution, long lifespan, reliability height.
2nd, refrigeration of the present utility model realizes that heating is realized by hot plate using semiconductor chilling plate, refrigeration, heating
Speed is fast and controls flexibility and reliability.
3rd, hot plate of the present utility model uses thermoelectric pile, and size, the shape of can arbitrarily arranging can change.
4th, the utility model refrigeration, heating conversion are reversible, as long as changing input current direction, with regard to that semiconductor can be made to exist
Enter line translation between refrigeration and heating mode.
Brief description of the drawings
Fig. 1 is a kind of example structure schematic diagram of the present utility model.
Embodiment
The utility model mainly includes the modules such as temperature acquisition, temperature display, alarm, button, cooling and warming, peripheral circuit
Design.This design has the features such as high-precision, low cost, small volume, is a cost-effective practical two components alloy
Phasor Temperature-controlled appliance.
Embodiment 1：
Two-component metal phase diagram experimental provision based on Single chip microcomputer temperature control system, including single-chip microcomputer, temperature sensor,
A/D converter, key circuit, heater, the first relay, the second relay and cooler, temperature sensor pass through A/D
Converter is connected with single-chip microcomputer, and the key circuit is connected with single-chip microcomputer, and single-chip microcomputer is connected by the first relay and heater
Connect, single-chip microcomputer is connected by the second relay with cooler.According to the height of collecting temperature, single-chip microcomputer control first or second after
Electrical equipment adhesive, heating or refrigeration.
Embodiment 2：
It is PT100 thermal resistances by temperature sensor selection, the resistance using PT100 thermal resistances becomes with the change of temperature
The characteristic of change, corresponding voltage is collected, A/D conversions are carried out by MAX6675 modulus conversion chips.
Embodiment 3：
Two-component metal phase diagram experimental provision also includes warning device, when collecting temperature not in preset temperature range
When, prompted by alarm.Prevent operational error.
Embodiment 4：Two-component metal phase diagram experimental provision also includes LCD display, and LCD display is connected with single-chip microcomputer,
Dynamically current measurement temperature is shown in real time.
Embodiment 5：
Two-component metal phase diagram experimental provision based on Single chip microcomputer temperature control system is mainly using STC89C52 chips as core
The size control system of the heart, powered by 12V power supplys by L7805 voltage stabilizing chips generation+5V voltages to single-chip microcomputer.Utilize button electricity
Road sets a temperature range, and shows the section on a display screen, and key circuit includes four buttons, two regulation upper limits
The size of temperature, the size of two regulation lower limit temperatures.Resistance using PT100 thermal resistances changes with the change of temperature
Characteristic, corresponding voltage is collected, converting analog signals into data signal by MAX6675 modulus conversion chips is sent to list
Piece machine, then show screen display Current Temperatures in LCD1602.Current Temperatures are judged whether in the temperature range of setting, if
In section, then system does not work.If not existing, buzzer sends alarm signal, and judges to open according to the size of Current Temperatures
Dynamic refrigeration or heating combined equipment, finally make temperature stabilization in the section of setting.
Claims (10)
1. the two-component metal phase diagram experimental provision based on Single chip microcomputer temperature control system, including single-chip microcomputer, temperature sensor, A/
D converters, key circuit, heater, the first relay, the second relay and cooler, the temperature sensor pass through
A/D converter is connected with single-chip microcomputer, and the key circuit is connected with single-chip microcomputer, and the single-chip microcomputer passes through the first relay and heating
Device is connected, and the single-chip microcomputer is connected by the second relay with cooler.
2. the two-component metal phase diagram experimental provision according to claim 1 based on Single chip microcomputer temperature control system, it is special
Sign is：The temperature sensor is PT100 thermal resistances.
3. two-component metal phase diagram experimental provision based on Single chip microcomputer temperature control system of the basis described in claim 2, its
It is characterised by：The A/D converter is MAX6675 modulus conversion chips.
4. the two-component metal phase diagram experimental provision according to claim 3 based on Single chip microcomputer temperature control system, it is special
Sign is：The single-chip microcomputer is STC89C52 chips.
5. the two-component metal phase diagram experimental provision according to claim 4 based on Single chip microcomputer temperature control system, it is special
Sign is：The heater is hot plate.
6. the two-component metal phase diagram experimental provision according to claim 5 based on Single chip microcomputer temperature control system, it is special
Sign is：The cooler is semiconductor chilling plate.
7. dress is tested according to claim 1-6 any described two-component metal phase diagram based on Single chip microcomputer temperature control system
Put, it is characterised in that：Also include warning device, the warning device is connected with single-chip microcomputer.
8. the two-component metal phase diagram experimental provision according to claim 7 based on Single chip microcomputer temperature control system, it is special
Sign is：Also include LCD display, the LCD display is connected with single-chip microcomputer.
9. the two-component metal phase diagram experimental provision according to claim 8 based on Single chip microcomputer temperature control system, it is special
Sign is：The button electric furnace includes four buttons, and the size of two regulation ceiling temperatures, two adjust the big of lower limit temperature
It is small.
10. the two-component metal phase diagram experimental provision according to claim 9 based on Single chip microcomputer temperature control system, it is special
Sign is：Also include 12V power supplys and L7805 voltage stabilizing chips, the 12V power supplys are powered by L7805 voltage stabilizing chips to single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720853059.4U CN206975459U (en) | 2017-07-14 | 2017-07-14 | Two-component metal phase diagram experimental provision based on Single chip microcomputer temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720853059.4U CN206975459U (en) | 2017-07-14 | 2017-07-14 | Two-component metal phase diagram experimental provision based on Single chip microcomputer temperature control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206975459U true CN206975459U (en) | 2018-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720853059.4U Expired - Fee Related CN206975459U (en) | 2017-07-14 | 2017-07-14 | Two-component metal phase diagram experimental provision based on Single chip microcomputer temperature control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109144135A (en) * | 2018-08-01 | 2019-01-04 | 昆明理工大学 | A kind of SCM Based rare earth fluorination furnace temperature control system |
| CN109521043A (en) * | 2018-12-17 | 2019-03-26 | 邯郸学院 | A kind of electromagnetic heating metal phase diagram experimental method and test tube |
-
2017
- 2017-07-14 CN CN201720853059.4U patent/CN206975459U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109144135A (en) * | 2018-08-01 | 2019-01-04 | 昆明理工大学 | A kind of SCM Based rare earth fluorination furnace temperature control system |
| CN109521043A (en) * | 2018-12-17 | 2019-03-26 | 邯郸学院 | A kind of electromagnetic heating metal phase diagram experimental method and test tube |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180206 Termination date: 20180714 |