CN106352994A - Digital type fast temperature measuring system - Google Patents

Digital type fast temperature measuring system Download PDF

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Publication number
CN106352994A
CN106352994A CN201510422276.3A CN201510422276A CN106352994A CN 106352994 A CN106352994 A CN 106352994A CN 201510422276 A CN201510422276 A CN 201510422276A CN 106352994 A CN106352994 A CN 106352994A
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China
Prior art keywords
circuit
chip microcomputer
liquid crystal
crystal display
measurement system
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Pending
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CN201510422276.3A
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Chinese (zh)
Inventor
许亚夫
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许亚夫
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Priority to CN201510422276.3A priority Critical patent/CN106352994A/en
Publication of CN106352994A publication Critical patent/CN106352994A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a digital type fast temperature measuring system. The digital type fast temperature measuring system comprises a single-chip microcomputer control circuit, a temperature conversion circuit, a K type thermocouple temperature collecting circuit, a liquid crystal display circuit, an outrange alarm circuit and a key control circuit and is structurally characterized in that the single-chip microcomputer control circuit is connected with the temperature conversion circuit, and the signal input end of the temperature conversion circuit is connected with the output end of the K type thermocouple temperature collecting circuit; the signal output end of the single-chip microcomputer control circuit is respectively connected with the signal input ends of the liquid crystal display circuit, the outrange alarm circuit and the key control circuit. The digital type fast temperature measuring system which is successfully applied to an aerospace temperature testing system is fast in temperature measuring response, high in precision, low in cost and high in practicality.

Description

A kind of digital quick temperature measurement system
Technical field
The invention belongs to the quick temperature measurement technical field in industrial and agricultural production and scientific experiment, more particularly to a kind of digital quick temperature measurement system.
Background technology
Temperature is the physical parameter of reflection object cold-hot condition.There is very high requirement in some special occasions to the detection speed of temperature, for example: complete in thermometry requirements 0.4 s of the sustainer of space shuttle.The quick measurement of temperature is particularly important.
Content of the invention
The present invention is aiming at extensive application demand in industrial and agricultural production and scientific experiment for the quick temperature measurement, provides a kind of digital quick temperature measurement system;Temperature survey response of the present invention is fast, high precision, cost are relatively low, has very high practicality;It has been successfully applied to certain space flight Research on Automatic Measuring System of Temperature.
For realizing the above-mentioned purpose of the present invention, the present invention adopts the following technical scheme that.
A kind of digital quick temperature measurement system of the present invention, including single chip machine controlling circuit, temperature conversion circuit, K-type Thermocouple Temperature Acquisition circuit, liquid crystal display circuit, outranges warning circuit, key control circuit;Its structural feature is: described single chip machine controlling circuit and temperature conversion circuit are connected with each other, and the signal input part of described temperature conversion circuit connects the outfan of K-type Thermocouple Temperature Acquisition circuit;The signal output part of described single chip machine controlling circuit respectively with liquid crystal display circuit, outrange warning circuit, the signal input part of key control circuit is connected.
As a preferred embodiment of the present invention, described single chip machine controlling circuit adopts at89c52 type single-chip microcomputer.
As another kind of preferred version of the present invention, described temperature conversion circuit adopts max6675 chip to constitute.
As another kind of preferred version of the present invention, described liquid crystal display circuit adopts lcdl062 liquid crystal display screen.
Further, described lcdl062 liquid crystal display screen includes 1~16 port;Wherein, 1,2 ports connect power supply, and 15,16 ports connect backlight electric power, and 3 ports are connected to the ground by a potentiometer r3, and 4,6,7~14 ports of described lcdl062 liquid crystal display screen are connected with p20, p22, p00 of single-chip microcomputer at89c52~p07 respectively.
As another kind of preferred version of the present invention, described key control circuit adopts independent keyboard, and described independent keyboard includes s2 function key, s3 button increases key, s4 button subtracts key;Wherein, described button s2 is connected with the p30 port of single-chip microcomputer at89c52, and described button s3 is connected with the p31 port of single-chip microcomputer at89c52, and described button s4 is connected with the p32 port of single-chip microcomputer at89c52.
Further, described button s2, button s3, button s4 are connected with power supply vcc end by connecting 10k resistance respectively.
As another kind of preferred version of the present invention, described outrange warning circuit and include resistance r4, r5, light emitting diode d2, audion q1, speaker ls1;Described one end of resistance r4 is connected with the anode of light emitting diode, and is jointly connected with the p23 port of single-chip microcomputer at89c52;The other end of described resistance r4 is connected with the base stage of audion q1, and the negative electrode of light emitting diode is connected with one end of resistance r5, and the other end of resistance r5 is connected with the colelctor electrode of audion q1, and the emitter stage of described audion is connected with speaker ls1.
The invention has the beneficial effects as follows.
A kind of digital quick temperature measurement system of the present invention, employ K-type thermocouple as temperature sensor, and the components and parts such as combination temperature conversion chip max6675, at89c52 single-chip microcomputer, lcd liquid crystal display, consider the thermal inertia time constant problem of thermocouple, using fast algorithm control program it is achieved that the function of the quick measurement of temperature;The digital quick temperature measurement system temperature measurement response based on at89c52 single-chip microcomputer for the present invention is fast, high precision, cost are relatively low, has very high practicality, has been successfully applied to certain space flight Research on Automatic Measuring System of Temperature;The present invention is capable of the high-precision rapid survey function to the surface of solids, liquids and gases temperature using quick temperature measurement algorithm, and temperature measurement accuracy is up to 0.250C, has very high practical value, has been successfully applied to certain space flight Research on Automatic Measuring System of Temperature.
Brief description
Fig. 1 is a kind of hardware block diagram of digital quick temperature measurement system of the present invention.
Fig. 2 is a kind of SCM peripheral circuit interface schematic diagram of digital quick temperature measurement system of the present invention.
Fig. 3 is a kind of digital quick temperature measurement system of the present invention by key control (a), liquid crystal display (b), warning circuit (c) connection figure.
Specific embodiment
As shown in figure 1, being a kind of structured flowchart of digital quick temperature measurement system of the present invention.In figure, including single chip machine controlling circuit, temperature conversion circuit, K-type Thermocouple Temperature Acquisition circuit, liquid crystal display circuit, outranges warning circuit, key control circuit;Its structural feature is: described single chip machine controlling circuit and temperature conversion circuit are connected with each other, and the signal input part of described temperature conversion circuit connects the outfan of K-type Thermocouple Temperature Acquisition circuit;The signal output part of described single chip machine controlling circuit respectively with liquid crystal display circuit, outrange warning circuit, the signal input part of key control circuit is connected.
Described single chip machine controlling circuit adopts at89c52 type single-chip microcomputer.Described temperature conversion circuit adopts max6675 chip to constitute.Described liquid crystal display circuit adopts lcdl062 liquid crystal display screen.
Illustrate the principle of the invention in conjunction with accompanying drawing and technical scheme: described K-type Thermocouple Temperature Acquisition circuit gathers external temperature, and by the Double-strand transmission of outer signals interference can be reduced to the temperature transition chip max6675 with cold junction compensation, realize temperature transition;Described single-chip microcomputer at89c52 is as core controller, control to max6675 temperature conversion circuit is realized by spi universal serial bus, and show the temperature of measurement in real time by controlling lcdl062 liquid crystal display screen, thermometric range passes through to control independent keyboard to realize flexibly transferring;Real-time monitoring measured temperature simultaneously, outranges temperature by controlling buzzer warning to show.
As shown in Fig. 2 being a kind of SCM peripheral circuit interface schematic diagram of digital quick temperature measurement system of the present invention.Wherein, the data input pin of p1.0 simulation spi is connected with so, and the serial clock signal that p1.1 simulates spi is connected with sck, and the slave that p1.2 simulates spi selects end to be connected with cs;In circuit, main frame is at89c52, slave is max6675, the p1.7 of single-chip microcomputer outranges warning for control system, p2.1, p2.2 and d0 of single-chip microcomputer~d7 mouth controls lcd LCD MODULE by corresponding circuit respectively, p3.0, p3.1, p3.2 are connected with 3 keystroke interface of key circuit respectively, and single-chip microcomputer is realized the reading of temperature data, shows and outranged warning by related control program.
As shown in figure 3, for a kind of digital quick temperature measurement system of the present invention by key control (a), liquid crystal display (b), warning circuit (c) connection figure.Referring to shown in figure (a), described key control circuit adopts independent keyboard, and described independent keyboard includes s2 function key, s3 button increases key, s4 button subtracts key;Wherein, described button s2 is connected with the p30 port of single-chip microcomputer at89c52, and described button s3 is connected with the p31 port of single-chip microcomputer at89c52, and described button s4 is connected with the p32 port of single-chip microcomputer at89c52.Further, described button s2, button s3, button s4 are connected with power supply vcc end by connecting 10k resistance respectively.
Referring to shown in figure (b), described lcdl062 liquid crystal display screen includes 1~16 port;Wherein, 1,2 ports connect power supply, and 15,16 ports connect backlight electric power, and 3 ports are connected to the ground by a potentiometer r3, and 4,6,7~14 ports of described lcdl062 liquid crystal display screen are connected with p20, p22, p00 of single-chip microcomputer at89c52~p07 respectively.
Referring to shown in figure (c), described outrange warning circuit and include resistance r4, r5, light emitting diode d2, audion q1, speaker ls1;Described one end of resistance r4 is connected with the anode of light emitting diode, and is jointly connected with the p23 port of single-chip microcomputer at89c52;The other end of described resistance r4 is connected with the base stage of audion q1, and the negative electrode of light emitting diode is connected with one end of resistance r5, and the other end of resistance r5 is connected with the colelctor electrode of audion q1, and the emitter stage of described audion is connected with speaker ls1.
It is understandable that, above with respect to the specific descriptions of the present invention, it is merely to illustrate the present invention and is not limited to the technical scheme described by the embodiment of the present invention, it will be understood by those within the art that, still the present invention can be modified or equivalent, to reach identical technique effect;As long as meeting and using needs, all within protection scope of the present invention.

Claims (8)

1. a kind of digital quick temperature measurement system, including single chip machine controlling circuit, temperature conversion circuit, K-type Thermocouple Temperature Acquisition circuit, liquid crystal display circuit, outranges warning circuit, key control circuit;It is characterized in that: described single chip machine controlling circuit and temperature conversion circuit are connected with each other, and the signal input part of described temperature conversion circuit connects the outfan of K-type Thermocouple Temperature Acquisition circuit;The signal output part of described single chip machine controlling circuit respectively with liquid crystal display circuit, outrange warning circuit, the signal input part of key control circuit is connected.
2. a kind of digital quick temperature measurement system according to claim 1 it is characterised in that: described single chip machine controlling circuit adopt at89c52 type single-chip microcomputer.
3. a kind of digital quick temperature measurement system according to claim 1 it is characterised in that: described temperature conversion circuit adopt max6675 chip constitute.
4. a kind of digital quick temperature measurement system according to claim 1 it is characterised in that: described liquid crystal display circuit adopt lcdl062 liquid crystal display screen.
5. a kind of digital quick temperature measurement system according to claim 4 it is characterised in that: described lcdl062 liquid crystal display screen includes 1~16 port;Wherein, 1,2 ports connect power supply, and 15,16 ports connect backlight electric power, and 3 ports are connected to the ground by a potentiometer r3, and 4,6,7~14 ports of described lcdl062 liquid crystal display screen are connected with p20, p22, p00 of single-chip microcomputer at89c52~p07 respectively.
6. a kind of digital quick temperature measurement system according to claim 1 it is characterised in that: described key control circuit adopts independent keyboard, and described independent keyboard includes s2 function key, s3 button increases key, s4 button and subtracts key;Wherein, described button s2 is connected with the p30 port of single-chip microcomputer at89c52, and described button s3 is connected with the p31 port of single-chip microcomputer at89c52, and described button s4 is connected with the p32 port of single-chip microcomputer at89c52.
7. a kind of digital quick temperature measurement system according to claim 6 it is characterised in that: described button s2, button s3, button s4 respectively pass through connect 10k resistance be connected with power supply vcc end.
8. a kind of digital quick temperature measurement system according to claim 1 it is characterised in that: described outrange warning circuit and include resistance r4, r5, light emitting diode d2, audion q1, speaker ls1;Described one end of resistance r4 is connected with the anode of light emitting diode, and is jointly connected with the p23 port of single-chip microcomputer at89c52;The other end of described resistance r4 is connected with the base stage of audion q1, and the negative electrode of light emitting diode is connected with one end of resistance r5, and the other end of resistance r5 is connected with the colelctor electrode of audion q1, and the emitter stage of described audion is connected with speaker ls1.
CN201510422276.3A 2015-07-18 2015-07-18 Digital type fast temperature measuring system Pending CN106352994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510422276.3A CN106352994A (en) 2015-07-18 2015-07-18 Digital type fast temperature measuring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510422276.3A CN106352994A (en) 2015-07-18 2015-07-18 Digital type fast temperature measuring system

Publications (1)

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CN106352994A true CN106352994A (en) 2017-01-25

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Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

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