CN2276643Y - Intellgence temp. fuzzy control instrument - Google Patents
Intellgence temp. fuzzy control instrument Download PDFInfo
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- CN2276643Y CN2276643Y CN 96214260 CN96214260U CN2276643Y CN 2276643 Y CN2276643 Y CN 2276643Y CN 96214260 CN96214260 CN 96214260 CN 96214260 U CN96214260 U CN 96214260U CN 2276643 Y CN2276643 Y CN 2276643Y
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Abstract
The utility model relates to an intelligence type instrument for temperature fuzzy control. A single chip computer of Model MC68HC05C8 of MOTOROLA is adopted as a CPU. An RAM and an ROM are arranged inside the CPU. Functions of sampling, calculation, monitoring, storage, display, and a plurality of outputs and inputs can be realized. Serial EEPROM chips are attached, and technology data which are arranged by users can be conserved when the instrument is shut down or is unexpectedly powered down. A changing and sampling input circuit of a voltage-frequency module and a plurality of different output interface circuits are completed by a special purpose chip. The structure of hardware is simple. An instrument casing can be inserted and pulled with electricity. A fuzzy logic arithmetic is applied by the instrument. The deflection of a heating temperature and the variation can be detected at real time. The output of the temperature control is adjusted at real time reasonably. The precision of the temperature control is high.
Description
The utility model relates to a kind of device that the single chip microcomputer chip is regulated electric variable of using; exactly; relate to a kind of intelligent Temperature Fuzzy Control device of using the nineties fuzzy logic control technology; this device adopts company of Motorola (MOTOROLA) high-performance monolithic computer chip; detected temperatures deviation and variation thereof in real time; by high speed fuzzy logic inference algorithm; can export by trickle adjustment temperature control; the temperature-controlled precision height; can self-adaptation adjust controlled variable, thus the goal of the invention that realizes the optimum control of heating-up temperature and save energy consumption, protection equipment.
By heating, the phase that changes material is to produce new product, be many traditional processing technologies such as processing industries such as plastics, food, chemical industry, metallurgy, here temperature controlled quality will directly influence economic and technical norms such as serviceable life of output, quality, equipment of product and energy consumption, so the control heating-up temperature just becomes the gordian technique and the important technical parameter of these industries.Temperature controller commonly used now mainly contains two big classes: the one, and the moving-coil type humidostat that adopts simulation to amplify, this quasi-instrument can only carry out position model to be regulated, for the equipment that hysteresis is arranged, the heating-up temperature of being controlled is (〉=± 10 ℃) swing in very large range, and control accuracy is low.The 2nd, adopt the PID temperature controller, this device needs to set up the mathematical model of determining, requires the user by adjusting for a long time determining coefficients such as ratio, integration, differential, and when causing the systematic parameter change when job change or production technology, the temperature control effect is with regard to variation.And in fact, any one firing equipment is at running hours, and its systematic parameter (as medium temperature, environment temperature, process conditions or the like) is all in continuous variation, and therefore, this class device also is difficult to satisfy the demand.
Fuzzy logic control is successful, a most practical current artificial intelligence control technology.Since the sixties in this century fuzzy mathematics is born, has received various countries' control expert's concern, and, become one of hot spot technology of automation field from the nineties.Fuzzy logic control can be in the occasion that is difficult to maybe can't set up mathematical model, and simulation manual control thought is carried out directly, rapidly, effectively control controlling object according to experience.When the experience of scientific and technical personnel according to the operator, sum up one group " if ... then ... " conditional statement of form, and the process control software that is compiled into of the arithmetic statement that will utilize this fuzzy logic inference, put in the fuzzy logic controller based on single-chip microcomputer, this controller just can possess whole abilities that the operator operates machines through fuzzy logic inference, and this controller operator's subjective mistake can not occur and make production run control optimization more, effective.
The good characteristic of fuzzy logic control is that also it need not to set up mathematical model (and mathematical model often is difficult to set up or can't set up at all in complication system) and just can realize the closed loop of system or equipment is controlled automatically.And structure of fuzzy controller is simple, and hardware is realized easily, and is with low cost; Be suitable for relying on people's intuition or experience to carry out manual occasion especially, anthropomorphic dummy's operation realizes control automatically.Therefore, fuzzy logic control in recent years obtains flourish: the household appliances of large quantities of fuzzy controls (as air conditioner, electric cooker, refrigerator, video camera etc.) are asked the city in succession and are well received; Industries such as the metallurgy in industrial circle, chemical industry, building materials, the application of fuzzy logic control has also obtained the achievement that attracts people's attention.
The purpose of this utility model provides a kind of intelligent Temperature Fuzzy Control instrument, this device utilizes CPU computer chip anthropomorphic dummy's operating experience, each parameter situation of change of automatic dynamic identification temperature control system, and adjusting adds the thermal output size continuously, realize intelligent temperature control, guarantee temperature control precision.
The utility model is achieved in that and includes casing, control panel and some printed circuit board, be provided with on printed circuit board (PCB) with the single chip microcomputer is control core circuit and output, input interface circuit, it is characterized in that: the single chip microcomputer chip model in the control circuit is the MC68HC05C8 of MOTOLORA company of Motorola, its peripheral interface includes: be made of eeprom chip, realize power down, preserve the memory circuit of technological parameter data when resetting; By a plurality of button inputting circuits of carrying out numerical value increase, numerical value minimizing, setting value ring shift left, setting or modification temperature, parameter circulatory function respectively; Adopt special-purpose voltage-frequency conversion chip and high precision operating amplifier to cooperate the circuit of sampling input that realizes that high-precision voltage (mould)-frequency (number) is changed; By two charactrons show that special driving chip and four seven segment numerical display tubes of two rows constitute, show that the current observed temperature (or alarm code) and the number of two numerical value of design temperature show and driving circuit respectively; Cooperate the V-I conversion output circuit of finishing PWM-V conversion and finishing with voltage stabilizing diode LM336-2.5 by dual operational amplifier CA3140 by dual operational amplifier CA3140, and the duty display circuit that constitutes by a plurality of light emitting diodes; Above-mentioned output/input interface circuit all is provided with inside and outside two cover power supplys and serial connection photoelectric isolating device, to realize inside and outside electrical isolation.
The memory chip model of above-mentioned realization data cut-off protection is NMC93C.
Above-mentioned special-purpose voltage-frequency conversion chip model is LM331A, and the high precision operating amplifier chip model that is mated application is ICL7650.
Above-mentioned charactron shows that the special driving chip model is MC14499.
Above-mentioned output circuit can be to drive relay, solid-state relay, bidirectional triode thyristor, also can provide different voltage and currents.
Power circuit adopts the switching regulator stabilized voltage supply, wherein is provided with the optocoupler that can finish the output level self feed back and the acceleration triode by switching time of acceleration switch pipe.
The both sides up and down of printed board be provided with can be directly and the casing chute in the chimb that is fixed of respective slot.
Casing is provided with a plurality of column barbs that are used to fix the location printed circuit board (PCB).
The utility model is that the MC68HC05C8 type single-chip microcomputer with MOTOLORA company of Motorola is the intelligent fuzzy logic temperature control equipment that CPU constitutes.This CPO inside is provided with EPROM and RMA, strong anti-interference performance, peripheral matched chip kind is many, can realize sampling, calculate, monitor, the temperature control function of storage, keyboard, demonstration and multiple I/O, be aided with the serial EEPROM chip, can under situations such as shutdown, unexpected power down, preserve the various technological parameters that the user sets; This device is furnished with switch power special, can adapt to the AC100V-242V voltage fluctuation and operate as normal.This apparatus structure design is exquisite ingenious, whole three printed circuit board adopt its up and down on both sides chimb and the casing chute respective slot be fixed or directly by the column barb fixing of casing, do not need fastening connection piece, dismantle simple and convenient, can carry out the whole movement of charged plug, be convenient to install, safeguard.This device fuzzy logic control technology detects heating-up temperature deviation and variation thereof in real time, the on-line automatic identification systematic parameter, by high speed fuzzy logic inference algorithm, in good time, rationally adjust temperature control output, accuracy of temperature control height, overshoot are little, and temperature control performance is better than intelligent PID temperature control instrument.In a word, the utility model also is the new application of single chip microcomputer in Industry Control, and hardware configuration is simple, and reliable operation can realize temperature stabilization control in technology, when environmental parameter changes, and need to be specially adapted to all processing industries of high precision temperature control.
Fig. 1 is the utility model control circuit block diagram;
Fig. 2 is the electrical schematic diagram of single-chip microcomputer and storer, keyboard input circuit, digital demonstration, driving and light emitting diode duty output circuit in the utility model control circuit;
Fig. 3 is the electrical schematic diagram of pressing a conversion input frequently and control gating interface circuit in the utility model control circuit;
Fig. 4 is the electrical schematic diagram of various output interface circuits in the utility model control circuit;
Fig. 5 is the electrical schematic diagram of power circuit in the utility model control circuit;
Fig. 6 is a casing external form schematic perspective view of the present utility model;
Fig. 7 is casing of the present utility model and mounting structure of printed circuit board synoptic diagram;
Referring to Fig. 1, Fig. 2, the utility model is that 8 bit CPU single chip microcomputers with Motorola Inc. are that core is formed control circuit, and its model is MC68HC05C8.This chip does not have external bus, antijamming capability is strong, the particularly suitable industrial environment is used, and power consumption is than the approximately little order of magnitude of the serial cpu chip of intel, himself be provided with the RAM of 8KEPROM and 176～300 bytes, can simplify the peripheral circuit structure, and available supporting peripheral chip is more, is particularly useful for serial control signal.It is that the structure of control core circuit and output, input interface circuit is formed that Fig. 1 has showed with 68HC05C8 model C PU.Its peripheral interface circuit includes by eeprom chip and constitutes, and realizes power down, preserves the memory circuit (its model is NMC93C46) of process data when resetting; By carrying out a plurality of button inputting circuits that numerical value increases UP, numerical value minimizing DOUN, setting value ring shift left LEFT, setting or revises temperature SET, parameter cycle P AR function respectively; Adopt special-purpose voltage-frequency conversion chip and high-operational amplifier to cooperate the analog-to-digital circuit of sampling input of voltage one frequency that realizes.
This unit temp sampling input can connect joins multiple temperature sensor, as thermopair PC, thermistor Pt100 or multiple standards voltage, current input signal, the keyboard input is except that being used to be provided with the heating-up temperature, also dissimilar warnings can be set, for example the super bound of temperature, disconnected thermopair, disconnected well heater etc.Its output circuit includes the number that is made of two digital special driving chip MC14499 of demonstration and four seven segment numerical display tubes of two rows and shows and driving circuit, can show current observed temperature (alarm code) and two numerical value of design temperature respectively.The duty display circuit that constitutes by a plurality of light emitting diodes, the alarm relay output circuit, drive the output circuit that cools fast of water pump, blower fan etc. by relay, and have multiple way of output circuit such as relay, solid-state relay, bidirectional triode thyristor, voltage, electric current.
Control circuit electrical schematic diagram of the present utility model can see Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5 for details, and in order to guarantee on industrial environment normally steady operation, the utility model has been taked some special measures on anti-interference.At first be that the output/input interface circuit all adopts inside and outside two cover insulating power supplies and uses photoelectricity coupling isolating device, make the inside and outside electrical isolation fully of the utility model control circuit, to get rid of outside electromagnetic interference.In addition, adopt custom-designed Switching Power Supply, can bear mains fluctuations on a large scale (AC100～242V) and operate as normal.
In order to improve the degree of accuracy of control temperature, the utility model adopts the voltage-frequency switch technology to carry out temperature sampling (referring to Fig. 3), the MV level signal of thermopair enters analog switch U24 through the low-pass filter of R22 and C5 composition, digital quantity output signal (CH0 by CPU control, CH1, CH2) control gating, through U25 emitter following and U26 amplification becoming 0～10V signal, the anti-phase integration input unit that constitutes through C13 and U27 again, the voltage of output passes through to change with voltage-frequency the interaction of the 6 pin threshold voltages of special chip U28 (LM331), change timing cycle, 3 pin of LM331 form the frequency signal of 0～10K through pull-up resistor R36, finish the voltage/frequency conversion, isolate the TCAP end of importing CPU with this schmitt trigger U22 shaping through optocoupler U23 again.This voltage-frequency conversion is equivalent to 14 moulds/number conversion precision, and the linearity can reach 0.05%, and for K type thermocouple (1～400 ℃), sampling sensitivity can reach 0.025 ℃.Fig. 3 has also showed and has adopted thermistor R-A, R-B, R-C and various various criterion voltage, the electric current input circuit as input signal.For example, during the input of 0～5V voltage signal, switch J2 should be disconnected, form voltage translation/companding circuitry through the low-pass filter circuit of R49 and C19 composition with by R50, R51, R47, R46, multi-form voltage signal can be converted to unified standard signal, anti-phase through U31, U33 amplification again, just be transformed into the required voltage signal of voltage-frequency change-over circuit, thereby finish the V/F conversion.When current signal is imported in this way, then switch J2 is closed, make it to be converted into voltage signal, still carry out the V/F conversion by above-mentioned voltage signal flow process.
In order to satisfy the on-the-spot needs of Industry Control, the utility model provides multiple multi-form input/output interface signal, and conditioning is convenient and circuit structure is simple.Wherein the input interface signal can also be the normal voltage signal of 0～100MV, 0～5V, 1～5V and 0～10V except being from the signal that thermopair, thermistor are gathered, and also can be the normalized current signal of 0～100mA, 4～20mA and 0～20mA.Same output interface circuit also can provide multiple mode to allow the user select for use, and physical circuit is referring to Fig. 4.The CPU output interface has one the tunnel can the adjustable pwm signal (TCMP) of output pulse width, this pwm signal earlier in optocoupler U37 external circuit isolate, again through transistor N16 and stabilivolt Z
1(LM336-2.5) form the pwm signal of 0V～2.5V, the active secondary filtering circuit of forming via U38, U39 again, make the PWN signal through level and smooth, become 0～5V voltage signal after amplifying and export.Feedback resistance R75, R81 and the potentiometer W2 of two amplifiers can adjust enlargement factor, can realize the difference output of multiple level range.The R78 here, R79, R80 and potentiometer W3 realize voltage translation/companding.
Above-mentioned voltage output signal Vout can form current signal for output through U40, U41 two stage amplifer and R87 feedback.Other output form (as solid-state relay SSR, bidirectional triode thyristor and relay etc.) circuit is given unnecessary details as shown in the figure no longer one by one.
Referring to Fig. 5, the utility model specialized designs Switching Power Supply give the control circuit feed, this circuit can be at AC100～242V scope normal power supply.When its output voltage changes, led current on the optocoupler 4N25 that is connected in series on the output circuit also changes luminosity thereupon, the inner phototriode impedance of optocoupler 4N25 is also changed thereupon, dynamic adjustments triode C1815 base voltage, change the Switching Power Supply switch periods, thus regulated output voltage.Another effect of triode C1815 is when the switching tube D1575 of Switching Power Supply occurs by trend; rapidly conducting of C1815 makes that voltage ends this switching tube acceleration less than 0.7 volt between the Base-Emitter of D1575; reduce useless power consumption, also protected this switching tube.
Referring to Fig. 6, Fig. 7, the utility model is made up of casing 1, control panel 2 and three printed circuit board 3.Wherein the casing 1 size integral molded plastic of adopting international standards is made.For making things convenient for installing/dismounting, have two printed circuit board 3 to descend both sides to be provided with chimb 31 thereon, can be directly and the chute 11,12 of casing 1 in corresponding groove 110,120 be fixed; 30 of the P.e.c. that another piece is installed in control panel 2 rear sides are by a plurality of column barbs 13 that are provided with on the casing 1 be fixed (referring to Fig. 7).Control panel 2 is provided with four seven segment digital tubes 21,22 of two rows, and wherein the row's of going up charactron 21 is used for display setting temperature or alarm code; Under arrange 22 display setting temperature of charactron; Row is in conjunction with showing various systematic parameters up and down.Middle five luminotrons 23 are respectively applied for and show various duties.The lower right downside is provided with outside four explicit buttons: numerical value increases key, numerical value reduces key, setting value ring shift left key, SET setting or revises the technological temperature operating key; The lower-left side also is provided with an implicit expression button 25, is used for the initialization system loop parameter.Structural design exquisiteness of the present utility model can the warm swap operation, and the printed panel loading and unloading are easy, do not need instrument and securing member, are convenient to install and use.
It is some that the utility model has been developed model machine, implements through test on single screw rod and twin-screw plastic extruder, utilizes fuzzy logic control multichannel heating-up temperature, can make the temperature control deviation less than ± 1 ℃, realized goal of the invention.
Claims (8)
1, a kind of intelligent Temperature Fuzzy Control instrument, include casing, control panel and some printed circuit board, be provided with on printed circuit board (PCB) with the single chip microcomputer is control core circuit and output, input interface circuit, it is characterized in that: the single chip microcomputer chip model in the control circuit is the MC68HC05C8 of MOTOLORA company of Motorola, its peripheral interface includes: be made of eeprom chip, realize power down, preserve the memory circuit of technological parameter data when resetting; By a plurality of button inputting circuits of carrying out numerical value increase, numerical value minimizing, setting value ring shift left, setting or modification temperature, parameter circulatory function respectively; Adopt special-purpose voltage-frequency conversion chip and high precision operating amplifier to cooperate the circuit of sampling input that realizes high-precision voltage (mould)-frequently (rate) number conversion; By two charactrons show that special driving chip and four seven segment numerical display tubes of two rows constitute, show the number demonstration and the driving circuit of current example temperature or alarm code and two numerical value of design temperature respectively; Cooperate the V-I conversion output circuit of finishing PWM-V conversion and finishing with voltage stabilizing diode LM336-2.5 by dual operational amplifier CA3140 by dual operational amplifier CA3140, and the duty display circuit that constitutes by a plurality of light emitting diodes; Above-mentioned output/input interface circuit all is provided with inside and outside two cover power supplys and serial connection photoelectric isolating device, to realize inside and outside electrical isolation.
2, intelligent Temperature Fuzzy Control instrument as claimed in claim 1, it is characterized in that: the memory chip model of above-mentioned realization data cut-off protection is NMC93C.
3, intelligent Temperature Fuzzy Control instrument as claimed in claim 1 is characterized in that: above-mentioned special-purpose voltage-frequency conversion chip model is LM331A, and the high precision operating amplifier chip model that is mated application is ICL7650.
4, intelligent Temperature Fuzzy Control instrument as claimed in claim 1 is characterized in that: above-mentioned charactron shows that the special driving chip model is MC14499.
5, intelligent Temperature Fuzzy Control instrument as claimed in claim 1 is characterized in that: above-mentioned output circuit can be to drive relay, solid-state relay, bidirectional triode thyristor, also can provide different voltage and currents.
6, intelligent Temperature Fuzzy Control instrument as claimed in claim 1 is characterized in that: power circuit adopts the switching regulator stabilized voltage supply, wherein is provided with the optocoupler that can finish the output level self feed back and the acceleration triode by switching time of acceleration switch pipe.
7, intelligent Temperature Fuzzy Control instrument as claimed in claim 1 is characterized in that: the both sides up and down of printed board be provided with can be directly and the casing chute in the chimb that is fixed of respective slot.
8, intelligent Temperature Fuzzy Control instrument as claimed in claim 1 is characterized in that: casing is provided with a plurality of column barbs that are used to fix the location printed circuit board (PCB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96214260 CN2276643Y (en) | 1996-07-08 | 1996-07-08 | Intellgence temp. fuzzy control instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96214260 CN2276643Y (en) | 1996-07-08 | 1996-07-08 | Intellgence temp. fuzzy control instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2276643Y true CN2276643Y (en) | 1998-03-18 |
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ID=33896414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96214260 Expired - Fee Related CN2276643Y (en) | 1996-07-08 | 1996-07-08 | Intellgence temp. fuzzy control instrument |
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| Country | Link |
|---|---|
| CN (1) | CN2276643Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100594745C (en) * | 2006-02-21 | 2010-03-17 | 常州市英杰工具有限公司 | Hot air gun circuit device |
| CN101943923A (en) * | 2010-09-06 | 2011-01-12 | 宁波艾骊科微控技术有限公司 | Embedded type intelligent multi-core multi-module temperature controller |
| CN101587335B (en) * | 2009-06-18 | 2011-04-20 | 上海华铭智能终端设备有限公司 | Three-rod brake movement controller and parameter setting method thereof |
| CN103760807A (en) * | 2014-01-16 | 2014-04-30 | 浙江江南制药机械有限公司 | Temperature protection device |
| CN106643119A (en) * | 2016-11-24 | 2017-05-10 | 安徽皖拓自动化有限公司 | Grain drying control system |
| CN108227481A (en) * | 2018-01-27 | 2018-06-29 | 石家庄德堃电子科技有限公司 | A kind of multi-functional process procedures controllers of PID and its control flow of band feed |
| CN109960297A (en) * | 2017-12-26 | 2019-07-02 | 北京迪文科技有限公司 | A kind of the human-computer interaction temperature control device and method of achievable parameter regulation |
-
1996
- 1996-07-08 CN CN 96214260 patent/CN2276643Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100594745C (en) * | 2006-02-21 | 2010-03-17 | 常州市英杰工具有限公司 | Hot air gun circuit device |
| CN101587335B (en) * | 2009-06-18 | 2011-04-20 | 上海华铭智能终端设备有限公司 | Three-rod brake movement controller and parameter setting method thereof |
| CN101943923A (en) * | 2010-09-06 | 2011-01-12 | 宁波艾骊科微控技术有限公司 | Embedded type intelligent multi-core multi-module temperature controller |
| CN103760807A (en) * | 2014-01-16 | 2014-04-30 | 浙江江南制药机械有限公司 | Temperature protection device |
| CN106643119A (en) * | 2016-11-24 | 2017-05-10 | 安徽皖拓自动化有限公司 | Grain drying control system |
| CN109960297A (en) * | 2017-12-26 | 2019-07-02 | 北京迪文科技有限公司 | A kind of the human-computer interaction temperature control device and method of achievable parameter regulation |
| CN108227481A (en) * | 2018-01-27 | 2018-06-29 | 石家庄德堃电子科技有限公司 | A kind of multi-functional process procedures controllers of PID and its control flow of band feed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |