CN205809738U - Drying box for welding rod temperature control system based on CPLD - Google Patents
Drying box for welding rod temperature control system based on CPLD Download PDFInfo
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- CN205809738U CN205809738U CN201620669279.7U CN201620669279U CN205809738U CN 205809738 U CN205809738 U CN 205809738U CN 201620669279 U CN201620669279 U CN 201620669279U CN 205809738 U CN205809738 U CN 205809738U
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- drying box
- welding rod
- control system
- temperature
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Abstract
This utility model provides a kind of drying box for welding rod temperature control system based on CPLD, it is characterized in that, it is made up of drying box for welding rod, temperature measurement system and sampled-data control system, described sampled-data control system includes the CPLD governor circuit being arranged on drying box for welding rod, controls input equipment and the warning devices that control circuit is connected with CPLD；Described temperature measurement system includes temperature acquisition element and the LCDs being connected with described CPLD governor circuit.This utility model realizes the temperature automatic control of drying box for welding rod by temperature measurement system and sampled-data control system, easy and simple to handle.Using Control System Design based on CPLD, the change of hardware capability is not required to equally change hardware circuit as tradition, but simply revises VHDL program.The reliability of increase system, shortens the construction cycle. reduce development cost.
Description
Technical field
This utility model relates to the temperature control system of a kind of drying box for welding rod based on CPLD.
Background technology
Owing to the requirement of more and more wider, the involved temperature control accuracy of the range of application of temperature control system is also got over
Come the highest, the most existing domestic many temperature detection and the system of control heating, but a lot of system has some limitations.
Obtain the SCM Based temperature control system of high speed development a few years ago, although it has simple in construction, low cost, control spirit
The advantage lived, but under the environment such as some special occasion, such as low temperature, strong jamming, a large amount of flying dust, Single Chip Microcomputer (SCM) system is owing to holding
Easily being disturbed by these external environment conditions, program is easily made mistakes, and its range of application receives the biggest constraint.Realize temperature control system
Parameters self-tuning, combines Linear Control with non-linear, and the needs making temperature can meet user are the final mesh of temperature control system
's.In actual applications, it should according to concrete application scenario, different heating targets and required controlling curve and control
Precision, selects different control methods.
Using the temperature control system of CPLD design, advantage is that controlling interface easily simplifies, the most in the chips " burning "
Controlling software, complete hardware capability, the globality of system will not also can be big by the reliability of too much interference and system
Big raising, has extremely strong interference rejection ability under severe conditions.Literature search shows, the temperature control of existing drying box for welding rod
System processed mainly electric information commercial system meets the demand of versatility, and is used in based on CPLD correspondence
System under special dimension requirement, has no that document is reported.As in other control method field, Wang Qinghai controls to grind at boiler temperature
Study carefully and middle Neural network PID with LabVIEW people and is combined alternately；PID is applied to the temperature of refrigerator and controls by the Hamid of Britain etc.
In；The Komatsu electronics, inc. of the Japan ionizing hot water to controlling to combine with modern control theory based on PID
Device temperature controls to have carried out research.
Summary of the invention
For solving the problems referred to above, the temperature that the utility model discloses a kind of drying box for welding rod based on CPLD controls system
System.
In order to reach object above, this utility model following technical scheme of offer:
A kind of drying box for welding rod temperature control system based on CPLD, by drying box for welding rod, temperature measurement system and
Sampled-data control system forms, and described sampled-data control system includes the CPLD governor circuit being arranged on drying box for welding rod, with
CPLD controls input equipment and the warning devices that control circuit is electrical connected；Described temperature measurement system includes and described CPLD
Temperature acquisition element that governor circuit is electrical connected and LCDs.
As preferably, the casing of described drying box for welding rod is externally provided with the case of shell, described shell and drying box for welding rod
Insulation material it is filled with between body.
As preferably, described drying box for welding rod is furnished with hutch.
As preferably, installing far-infrared radiation element in described drying box for welding rod thorax, every layer is provided with rustless steel drawer.
As preferably, in described hutch, it is provided with far-infrared radiation element.
As preferably, described temperature acquisition element is for using K-type thermoelectricity corner, and described temperature acquisition element is arranged on welding rod
In drying baker thorax, described temperature acquisition element is connected with the input of described CPLD governor circuit, and described temperature acquisition element is also
Connect and have A/D change-over circuit, cold junction compensation circuit and SPI mouth circuit.
As preferably, described LCDs connects the real time temperature display outfan of described CPLD governor circuit.
As preferably, described input equipment is used for controlling design temperature input, and connects with described CPLD governor circuit,
Described input equipment is input keyboard.
As preferably, described input keyboard is respectively equipped with ascending, descending key and the open and close of system controlling temperature preset value
Key.
As preferably, described warning devices buzzer and " end " display lamp, be used for pointing out described drying box for welding rod thorax
Interior temperature reaches preset value.
What this utility model obtained has the beneficial effect that
The temperature that this utility model realizes drying box for welding rod by temperature measurement system and sampled-data control system is automatic
Control, easy and simple to handle.Using Control System Design based on CPLD, the change of hardware capability is not required to as tradition the most more
Change hardware circuit, but simply revise VHDL program.The reliability of increase system, shortens the construction cycle. and reduce and develop
Cost.
Accompanying drawing explanation
The structural representation of temperature control system in Fig. 1, this utility model；
The workflow diagram of temperature control system in Fig. 2, this utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, it is further elucidated with this utility model, it should be understood that following specific embodiment party
Formula is merely to illustrate this utility model rather than limits scope of the present utility model.
As it is shown in figure 1, drying box for welding rod based on CPLD by the CPLD governor circuit being located on drying baker and with
Input equipment that CPLD governor circuit is electrical connected, warning devices, temperature acquisition element, LCDs composition.CPLD master control
Circuit is made up of EPM240TC100C5 chip controls；Drying baker CPLD governor circuit is provided with the data of connection drying baker and connects
Mouthful；Temperature acquisition element uses K-type (nickel chromium triangle nisiloy) thermoelectricity corner, directly contacts, not by intermediate medium with in drying baker thorax
Impact, interval 0 DEG C to 1000 DEG C of operating temperature, need to connect the circuit such as A/D conversion, cold junction compensation, SPI mouth；Temperature acquisition unit
Part is connected with the input of CPLD governor circuit；Input equipment uses the matrix keyboard of 2*2；Control it is respectively equipped with on input keyboard
The ascending, descending key of temperature preset value and the open and close key of system；LCDs employing LCD12864 liquid crystal display screen, built-in 8192
Chinese character (16X16 dot matrix), 128 characters (8X16 dot matrix) and 64X256 lattice display RAM(GDRAM)；LCDs
Connect the real time temperature display outfan of CPLD governor circuit；Warning devices be buzzer and " end " display lamp；Buzzer and "
Terminating " display lamp connects functional module as the outer of CPLD governor circuit, and in being used for pointing out thorax, temperature reaches preset value.
Drying box for welding rod in the present embodiment, running voltage 220V, it is equipped with storage box, outside the casing of drying box for welding rod
It is provided with shell, between shell and the casing of drying box for welding rod, is filled with insulation material, install the reddest in drying box for welding rod thorax
External radiation element, convenient in order to access welding rod, every layer is provided with rustless steel drawer.The storage that drying box for welding rod panel is equipped with
Case, dries stand-by welding rod in order to deposit, heats with far-infrared element equally.It is controlled by independent electric part, automatically
Constant temperature.
It is illustrated in figure 2 temperature control system flow chart, after open system, input through keyboard preset temperature value, start to measure
Thorax temperature also shows, whether system detection thorax temperature reaches the upper limit, if reaching, stops Far-infrared Heating, if not up to, continues far infrared
Heating；Whether detection furnace temperature reaches lower limit temperature, if reaching, continuing Far-infrared Heating, and looping back a link and detect whether
Reaching the furnace temperature upper limit, if not up to, system controls far infrared and continues heating；Finally judge whether equal to target temperature, if etc.
In then stopping Far-infrared Heating, buzzer warning, " end " display lamp lights, be not equal to, and continues Far-infrared Heating.
Technological means disclosed in this utility model scheme is not limited only to the technological means disclosed in above-mentioned embodiment, also
Including the technical scheme being made up of above technical characteristic combination in any.It should be pointed out that, the ordinary skill for the art
For personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improve and profit
Decorations are also considered as protection domain of the present utility model.
Claims (10)
1. a drying box for welding rod temperature control system based on CPLD, it is characterised in that surveyed by drying box for welding rod, temperature
Amount system and sampled-data control system composition, described sampled-data control system includes the CPLD master control being arranged on drying box for welding rod
Circuit, the input equipment being connected with CPLD governor circuit and warning devices；Described temperature measurement system includes and described CPLD
Governor circuit be connected temperature acquisition element and LCDs.
2. drying box for welding rod temperature control system based on CPLD as claimed in claim 1, it is characterised in that described electric welding
The casing of bar drying baker is externally provided with shell, is filled with insulation material between described shell and the casing of drying box for welding rod.
3. drying box for welding rod temperature control system based on CPLD as claimed in claim 1, it is characterised in that described electric welding
Bar drying baker is furnished with hutch.
4. drying box for welding rod temperature control system based on CPLD as claimed in claim 1, it is characterised in that described electric welding
Installing far-infrared radiation element in bar drying baker thorax, every layer is provided with rustless steel drawer.
5. drying box for welding rod temperature control system based on CPLD as claimed in claim 3, it is characterised in that described storage
Far-infrared radiation element it is provided with in case.
6. drying box for welding rod temperature control system based on CPLD as claimed in claim 1, it is characterised in that described temperature
Acquisition elements is for using K-type thermoelectricity corner, and described temperature acquisition element is arranged in drying box for welding rod thorax, described temperature acquisition
Element is connected with the input of described CPLD governor circuit, and described temperature acquisition element is also associated with A/D change-over circuit, cold end is mended
Repay circuit and SPI mouth circuit.
7. drying box for welding rod temperature control system based on CPLD as claimed in claim 1, it is characterised in that described liquid crystal
Display screen connects the real time temperature display outfan of described CPLD governor circuit.
8. drying box for welding rod temperature control system based on CPLD as claimed in claim 1, it is characterised in that described input
Device is used for controlling design temperature input, and connects with described CPLD governor circuit, and described input equipment is input keyboard.
9. drying box for welding rod temperature control system based on CPLD as claimed in claim 8, it is characterised in that described input
Ascending, descending key and the open and close key of system controlling temperature preset value it is respectively equipped with on keyboard.
10. drying box for welding rod temperature control system based on CPLD as claimed in claim 1, it is characterised in that described police
Apply to install be set to buzzer and " end " display lamp, in being used for pointing out described drying box for welding rod thorax, temperature reaches preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620669279.7U CN205809738U (en) | 2016-06-30 | 2016-06-30 | Drying box for welding rod temperature control system based on CPLD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620669279.7U CN205809738U (en) | 2016-06-30 | 2016-06-30 | Drying box for welding rod temperature control system based on CPLD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205809738U true CN205809738U (en) | 2016-12-14 |
Family
ID=57512712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620669279.7U Active CN205809738U (en) | 2016-06-30 | 2016-06-30 | Drying box for welding rod temperature control system based on CPLD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205809738U (en) |
-
2016
- 2016-06-30 CN CN201620669279.7U patent/CN205809738U/en active Active
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| GR01 | Patent grant |