CN205384527U - Multichannel heater based on control of computer virtual instrument - Google Patents
Multichannel heater based on control of computer virtual instrument Download PDFInfo
- Publication number
- CN205384527U CN205384527U CN201620112521.0U CN201620112521U CN205384527U CN 205384527 U CN205384527 U CN 205384527U CN 201620112521 U CN201620112521 U CN 201620112521U CN 205384527 U CN205384527 U CN 205384527U
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- temperature
- heater
- multichannel
- virtual instrument
- control
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Abstract
Multichannel heater based on control of computer virtual instrument is including the heater that links to each other with temperature control system, the heater links to each other with 6 heating rods, temperature restraining device and manual controller respectively, temperature restraining device injects the display with current temperature display, maximum temperature and the maximum temperature setting device links to each other, manual controller links to each other with manual automatic switch, and the switch of manual automatic switch and 6 heating rods links to each other, the temperature data collection ware will use temperature transmitter output voltage, current signal in the internal temperature of gathering of controller case, through filtering, enlarge, after the AD conversion, the data transmission who obtains the computer handles the analysis to the terminal, when the environment changed and influences the temperature -controlled precision, the adjustment of carrying out temperature parameters through computer virtual instrument was in order to reach the required precision, utilize the control of computer virtual instrument, have the temperature -controlled precision height, easy to maintain, the lower and strong characteristics of expansibility of cost.
Description
Technical field
This utility model relates to the multichannel heater being applied in domain of control temperature, particularly to the multichannel heater based on computer virtual instrument controlling.
Background technology
In metallurgical industry, Chemical Manufacture, power engineering, machine-building and food processing, many fields such as agricultural greenhouse production, temperature is one of extremely widespread parameter particularly important again, and people need the temperature in various environment to be detected and controls.Current most widely used temperature-controlled process is that definite value switch temperature controls, the operation principle of this control method is to differentiate the relation between current temperature value and the target temperature of setting by hardware circuit or computed in software, and then system heating source (or chiller) is carried out break-make control.If current temperature value is higher than set temperature value, then turns off heater or open refrigerating plant；If current temperature value is lower than set temperature value, then heater simultaneously closes off refrigerating plant.This method of controlling switch is fairly simple, can realize with analog circuit when not having computer to participate in.But owing to this control mode is the power cutoff when system temperature rises to set point, power supply is opened when system temperature drops to set point, thus the hysteresis quality of temperature changing process cannot be overcome, cause system temperature fluctuation bigger, control accuracy is low, is completely unsuitable for high-precision temperature and controls.In the domain of control temperature of today, this mode cannot meet the more users requirement to temperature accuracy.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is in that to provide based on the multichannel heater of computer virtual instrument controlling, has temperature-controlled precision height, is easily maintained, the feature that less costly and autgmentability is strong.
To achieve these goals, the technical solution adopted in the utility model is: based on the multichannel heater of computer virtual instrument controlling, include the heater being connected with temperature control system；Heater is connected with 6 heating rods, temperature limit device and manual controller respectively；Temperature limit device limits display with current temperature display, maximum temperature and maximum temperature arranges device and is connected；Manual controller is connected with manual-automatic switch, and the switch of manual-automatic switch and 6 heating rods is connected.
Described heater is multichannel heater, and multichannel heater includes multichannel heater hardware, drive circuit and interface interchange circuit；Multichannel heater hardware is connected with heating rod one by relay one, is connected with heating rod two by relay two, is connected with heating rod three by relay three, is connected with heating rod four by relay four, is connected with heating rod five by relay five, is connected with heating rod six by relay six；Drive circuit is connected with starting GPIO interface, call GPIO interface and cutting out GPIO interface respectively.
Described multichannel heater includes Temperature sampler, heater, refrigerating plant and PID controller four part.
Described Temperature sampler is located in controller case body；Temperature sampler will arrange temperature transducer by 8 points in controller case body, to complete the temperature acquisition to each point, be outside equipped with an outer sensor, emphasis monitoring of environmental temperature at control chamber.The temperature that collects uses temperature transmitter output voltage, current signal, filtered, amplify, after AD conversion, the data obtained by computer are transferred to terminal and carry out Treatment Analysis.The content of its output includes: the parameters such as position, temperature, precision, temperature variable Rate.In this process, Temperature sampler will use thermal resistance sensor, incoming for data STC89C51 single-chip microcomputer will carry out preliminary treatment after collecting temperature, produce relevant parameter, and use USB serial converter by incoming for output parameter terminal, the controller being core with pid algorithm receive.PID controller is responsible for receiving data, controls heating module after treatment and experimental box body temperature is controlled by refrigeration module.Controller is to the process of data and the control to heating and cooling module.The temperature value of thermal resistance sensor Real-time Collection is compared by temperature control system with setting value, and difference is as the input of pid function block.Pid algorithm calculates suitable output control parameter according to ratio, integration, differential coefficient, utilizes the method for amendment control variable error to realize closed loop control, makes control process continuous.The control parameter of output will pass to heating and cooling module in real time.Multichannel heater is made up of heating rod, control circuit, driving.Heating rod is mainly used to heat, and realizes with virtual software in design, it is possible to achieve the thermal output of different capacity.Control circuit is responsible for controlling multichannel heating function, has connection system end and fire end, controls the function of heating rod.Whether heating rod works is all controlled this circuit by system end, circuit determine that whether each heating rod works.Multichannel heater will be controlled by the development board equipped with linux operating system, so needing design to realize corresponding control drive the purpose reaching to drive control circuit, by rational interface interchange, makes complete temperature control system be achieved.
This utility model has the advantage that
This utility model is owing to using six heating rods at heater body, controlling to arrange by optocoupler relay module, two of which terminal controls end for input, and two other terminal is output control terminal, middle employing Phototube Coupling, as electrical isolation between input and output (floating).When signal end has low level triggering signal, relay adhesive, common port leads to normally opened termination, and equipment has electricity work, and such setting has the feature of the security control to multichannel heater.Owing to relay uses RaspberryPi to control, one piece of BroadcomBCM2835 chip based on ARM framework that RaspberryPi uses, dominant frequency reaches 700MHz, inside save as 512M, use SD card as storing media, have an Ethernet, two USB interface, HDMI delivery outlet (support voice output), except the interface on these bases, also has the 8xGPIO for developing, UART, I2C, spi bus.Except rich interface, the operating system Linux increased income that this development board also uses, with operating system, it is suitable for exploitation graph of a correspondence interface, there is the feature of the network information transfer being correlated with.
Temperature in many fields such as this utility model can be applicable to metallurgical industry, Chemical Manufacture, power engineering, machine-building and food processing, agricultural greenhouse production controls.Temperature-controlled precision is high；When environment changes and has influence on temperature-controlled precision, carry out the adjustment of temperature parameter to reach required precision by computer virtual instrument；Utilizing computer virtual instrument controlling to be not only easy to safeguard and less costly, autgmentability is strong simultaneously.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is the theory diagram of this utility model heater.
Detailed description of the invention
Below in conjunction with accompanying drawing, structural principle of the present utility model and operation principle are described in further detail.
Referring to Fig. 1, based on the multichannel heater of computer virtual instrument controlling, include the heater being connected with temperature control system；Heater is connected with 6 heating rods, temperature limit device and manual controller respectively；Temperature limit device limits display with current temperature display, maximum temperature and maximum temperature arranges device and is connected；Manual controller is connected with manual-automatic switch, and the switch of manual-automatic switch and 6 heating rods is connected.
Referring to Fig. 2, described heater is multichannel heater, and multichannel heater includes multichannel heater hardware, drive circuit and interface interchange circuit；Multichannel heater hardware is connected with heating rod one by relay one, is connected with heating rod two by relay two, is connected with heating rod three by relay three, is connected with heating rod four by relay four, is connected with heating rod five by relay five, is connected with heating rod six by relay six；Drive circuit is connected with starting GPIO interface, call GPIO interface and cutting out GPIO interface respectively.
By the hardware circuit of heater in drivers design control system, carry out the duty of dynamic representation hardware by the change of the relational graph of display on computer virtual instrument.And the design of virtual software can see the changing condition of hardware more intuitively, and debugging is convenient, with low cost.Virtual heater is in order to reach design effect better, by the interface of reserved collecting temperature information, pid algorithm control station and refrigeration module reserved area.Have two interfaces, one of them is spare interface interface, release the button with heater panel, another interface is the main body of this utility model design, it it is the interface in order to express heater duty, comprehensive in order to what design, will there is manual controller above, the overall design drawing of virtual heater is referring to accompanying drawing.
Operation principle of the present utility model is:
Multichannel heater also includes Temperature sampler, heating module, refrigeration module and PID controller；Temperature sampler will arrange temperature transducer by 8 points in controller case body, and temperature transducer gathers the temperature of each point, and control chamber is outside equipped with an outer sensor, emphasis monitoring of environmental temperature.The temperature that collects uses temperature transmitter output voltage, current signal, filtered, amplify, after AD conversion, the data obtained by computer are transferred to terminal and carry out Treatment Analysis.The content of its output includes: the parameters such as position, temperature, precision, temperature variable Rate.In this process, Temperature sampler will use thermal resistance sensor, incoming for data STC89C51 single-chip microcomputer will carry out preliminary treatment after collecting temperature, produce relevant parameter, and use USB serial converter by incoming for output parameter terminal, the controller being core with pid algorithm receive.PID controller is responsible for receiving data, controls heating module after treatment and experimental box body temperature is controlled by refrigeration module.Controller is to the process of data and the control to heating and cooling module.The temperature value of thermal resistance sensor Real-time Collection is compared by temperature control system with setting value, and difference is as the input of pid function block.Pid algorithm calculates suitable output control parameter according to ratio, integration, differential coefficient, utilizes the method for amendment control variable error to realize closed loop control, makes control process continuous.The control parameter of output will pass to heating and cooling module in real time.Multichannel heater is made up of heating rod, control circuit, driving.Heating rod is used for heating, and realizes with virtual software, it is possible to achieve the thermal output of different capacity；Control circuit is responsible for controlling multichannel heating function, has connection system end and fire end, controls the heating of heating rod.Whether heating rod works by multichannel heater circuit, multichannel heater circuit determine that whether 6 heating rods work.Multichannel heater will be controlled by the development board equipped with linux operating system, so needing design to realize corresponding control drive the purpose reaching to drive control circuit, by rational interface interchange, makes complete temperature control system be achieved.
Temperature control system needs display current box temperature, ambient temperature, and has the module of temperature that input requires heat to, and equipment is started working the control module with power cut-off.What this utility model mainly completed is heater therein, casing is heated by heater, for considering the safety factors that heater uses, six respective duties of heating rod of main display in heater INTERFACE DESIGN, current box temperature, for security consideration, will safe temperature be set automatically, for the 120% of heating-up temperature.Equipment also has corresponding Non-follow control option simultaneously, tests the working condition of LED, is also applied in practical operation, has certain promotion value.
Claims (4)
1. based on the multichannel heater of computer virtual instrument controlling, it is characterised in that include the heater being connected with temperature control system；Heater is connected with 6 heating rods, temperature limit device and manual controller respectively；Temperature limit device limits display with current temperature display, maximum temperature and maximum temperature arranges device and is connected；Manual controller is connected with manual-automatic switch, and the switch of manual-automatic switch and 6 heating rods is connected.
2. the multichannel heater based on computer virtual instrument controlling according to claim 1, it is characterised in that described heater is multichannel heater, and multichannel heater includes multichannel heater hardware, drive circuit and interface interchange circuit；Multichannel heater hardware is connected with heating rod one by relay one, is connected with heating rod two by relay two, is connected with heating rod three by relay three, is connected with heating rod four by relay four, is connected with heating rod five by relay five, is connected with heating rod six by relay six；Drive circuit is connected with starting GPIO interface, call GPIO interface and cutting out GPIO interface respectively.
3. the multichannel heater based on computer virtual instrument controlling according to claim 2, it is characterised in that described multichannel heater includes Temperature sampler, heater, refrigerating plant and PID controller four part.
4. the multichannel heater based on computer virtual instrument controlling according to claim 3, it is characterised in that described Temperature sampler is located in controller case body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620112521.0U CN205384527U (en) | 2016-01-28 | 2016-01-28 | Multichannel heater based on control of computer virtual instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620112521.0U CN205384527U (en) | 2016-01-28 | 2016-01-28 | Multichannel heater based on control of computer virtual instrument |
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| Publication Number | Publication Date |
|---|---|
| CN205384527U true CN205384527U (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620112521.0U Expired - Fee Related CN205384527U (en) | 2016-01-28 | 2016-01-28 | Multichannel heater based on control of computer virtual instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110262586A (en) * | 2019-07-17 | 2019-09-20 | 莆田学院 | A kind of Remote temperature control system based on virtual emulation platform |
| CN110663288A (en) * | 2017-05-07 | 2020-01-07 | 高知有限公司 | System and method for centralized remote control of heaters |
-
2016
- 2016-01-28 CN CN201620112521.0U patent/CN205384527U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110663288A (en) * | 2017-05-07 | 2020-01-07 | 高知有限公司 | System and method for centralized remote control of heaters |
| CN110262586A (en) * | 2019-07-17 | 2019-09-20 | 莆田学院 | A kind of Remote temperature control system based on virtual emulation platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160713 Termination date: 20170128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |