CN201259640Y - Intelligent temperature control instrument for electric coke tar paving device - Google Patents
Intelligent temperature control instrument for electric coke tar paving device Download PDFInfo
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- CN201259640Y CN201259640Y CNU2008201902328U CN200820190232U CN201259640Y CN 201259640 Y CN201259640 Y CN 201259640Y CN U2008201902328 U CNU2008201902328 U CN U2008201902328U CN 200820190232 U CN200820190232 U CN 200820190232U CN 201259640 Y CN201259640 Y CN 201259640Y
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- tar precipitator
- temperature controller
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Abstract
Disclosed is an electric tar precipitator intelligent temperature controller; wherein, a temperature measurement bridge circuit for cold-junction automatic compensation and an A/D conversion circuit for analog-digital conversion are arranged between a single-chip computer and an externally connected temperature sensor; the single-chip computer converts the A/D converted digital signal into temperature value after BCD coding and then displays and outputs the value; at the same time, the single-chip computer precisely controls the temperature of the controlled object; the single-chip computer issues a command to control the on-off of a relay, so that the temperature of the porcelain bottle of the electric tar precipitator can be controlled within a preset range; and the functional parameters of the temperature controller are set through a keyboard input circuit and stored in the EEPROM. The utility model meets the requirement of precisely control the temperature of the porcelain bottle of the electric tar precipitator and can automatically turn on the high-voltage power supply only when the temperature reaches a preset value and is kept for two hours; in the case of temperature anomaly, the utility model can automatically cut off the high-voltage power supply and give a sound and light alarm, and can convert the temperature of the porcelain bottle into the standard analog signal and then timely upload the signal to the user host computer system to facilitate real-time monitoring for the user.
Description
Affiliated technical field
The utility model relates to a kind of intelligent temperature control instrument that is used for electrical tar precipitator, is the Special Automaticization temperature control instrument that is exclusively used in the temperature control system of the chemical industry environmental protection equipment electrical tar precipitator critical piece porcelain vase in the chemical field.
Background technology
At present, known temperature control instrument is the general purpose instrument that is applied to the every profession and trade domain of control temperature, by temperature sensor temperature signal is converted into electric signal and delivers to temperature controller inside and carry out after the signal Processing output control signal temperature of controlled device is controlled.In the prior art, the normal temperature control instrument that uses this general temperature control instrument as electrical tar precipitator critical piece porcelain vase, because it does not possess above last, lower limit set value cuts off the controlled device power supply automatically and the porcelain vase preheating just allows to connect functions such as electrical tar precipitator high-voltage power supply after 2 hours, easily cause the fault extension in the electrical tar precipitator actual motion, specific (special) requirements that must the cutoff high power supply in the time of can not satisfying the porcelain vase of electrical tar precipitator and could connect the high-voltage power supply of electrical tar precipitator and temperature anomaly after must preheating insulation is unfavorable for keeping the safety in production and the long-term stability operation of equipment.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of electrical tar precipitator intelligent temperature controller, this temperature controller not only has the function of demonstration, control controlled device temperature, also have cutoff high power supply and sound and light alarm when controlled device temperature anomaly, the function of ability opening device power supply behind the controlled device preheating setting-up time.
The technical scheme that its technical matters that solves the utility model adopts: comprise a single-chip microcomputer, have between described single-chip microcomputer and the external temperature sensor carry out cold junction automatically compensation the bridge for measuring temperature circuit, carry out analog-to-digital A/D change-over circuit, single-chip microcomputer will transfer temperature data output to through the digital signal after the A/D conversion is carried out the BCD coding by software program after, temperature to controlled device is accurately controlled, realized artificial intelligence, comprised that controlled device needs just to connect electrical tar precipitator power supply, bound temperature alarming cutoff high power supply function behind the preheating setting-up time;
Thereby the break-make of the instruction control relay that reception single-chip microcomputer sends drives external contactor action makes the temperature of electrical tar precipitator porcelain vase be controlled at relay output control circuit in the setting range;
Described single-chip microcomputer is connected with the functional parameter that is used for being provided with temperature controller, comprises the keyboard input circuit of the temperature of required control and upper and lower limit alarming value etc.
Be useful on the operational amplification circuit of amplification filtering between described bridge for measuring temperature circuit, the A/D change-over circuit.
The utility model comprises that also one is connected with the single-chip microcomputer output terminal, the control signal of single-chip microcomputer P0 mouth output is latched and is used for displays temperature and drives the address latch of relay output.
Described address latch output terminal is connected with and carries out the LED display circuit that Temperature numerical shows.
Described address latch output terminal is connected with keeps apart the I/O mouth and the relay of single-chip microcomputer, realizes the isolation of strong and weak signals, prevents that photoelectric coupler output end is succeeded the electrical equipment output control circuit by the photoelectrical coupler of the interference of outside introducing.
Described single-chip microcomputer is connected with to be monitored in real time to temperature controller, has the multifunctional monitoring chip of the EEPROM function of electrification reset, electric voltage dropping detection, WatchDog Timer, 512 bytes.
Described single-chip microcomputer is reserved the DCS interface and is connected D/A change-over circuit and operational amplification circuit, to the standard analog amount signal of host computer transmission porcelain vase Temperature numerical, control D/A change-over circuit and operational amplification circuit are converted into the temperature digital signal simulating signal output of 0-5V.
The utility model also comprises a power circuit of working power being provided for each control section.
The required intelligent requirements of the utility model system realizes by one chip microcomputer, comprises that porcelain vase needs preheating just to connect electrical tar precipitator power supply, bound temperature alarming cutoff high power supply function after two hours.
The beneficial effects of the utility model are: satisfied chemical field to the temperature controlled requirement of electrical tar precipitator porcelain vase under the observing and controlling of one chip microcomputer, after reaching setting value and be incubated 2 hours, temperature could connect high-voltage power supply, cutoff high power supply and sound and light alarm during temperature anomaly automatically.And be that standard analog amount signal and instrument mode are uploaded to user's master system in real time with the porcelain vase temperature transition, be convenient to the user and monitor in real time.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a circuit block diagram of the present utility model.Fig. 2 is the utility model computer control board circuit theory diagrams.Fig. 3 is the temperature display panel circuit theory diagrams.Fig. 4 is the power panel circuit theory diagrams.Fig. 5 divides synoptic diagram for the utility model operation display part.
Among Fig. 1: 1. power circuit 2. single-chip microcomputers 3. address latch 4. external temperature sensors 5. bridge for measuring temperature circuit 6. operational amplification circuit 7.A/D change-over circuit 8.LED display circuits 9. photoelectrical couplers 10. relay output control circuits 11. keyboard input circuits 12. multifunctional monitoring chip 13.D/A change-over circuits 14. operational amplification circuit 15.0-5V standard analog amounts output.
Embodiment
Among Fig. 1, the temperature signal of porcelain vase is converted into the external temperature sensor 4 of electric signal, through bridge for measuring temperature circuit 5, be used for amplification filtering operational amplification circuit 6 with carry out analog-to-digital A/D change-over circuit 7 and be connected with single-chip microcomputer 2, single-chip microcomputer 2 will transfer Temperature numerical to and export address latch 3 to and latch and be used for displays temperature and pilot relay output through the digital signal after the A/D conversion is carried out the BCD coding by software program after.An output terminal of address latch 3 is connected with and carries out the LED display circuit 8 that Temperature numerical shows.Address latch 3 another output terminals be connected with the I/O mouth and the relay of single-chip microcomputer keep apart, realize strong and weak signals isolation, prevent the photoelectrical coupler 9 of the interference introduced by the outside, photoelectrical coupler 9 output relay termination output control circuits 10.Single-chip microcomputer 2 is connected with keyboard input circuit 11, is used for being provided with the functional parameter of temperature controller, comprises the temperature of required control and upper and lower limit alarming value etc.Single-chip microcomputer 2 is connected with to be monitored in real time to temperature controller, has the multifunctional monitoring chip 12 of the EEPROM function of electrification reset, electric voltage dropping detection, WatchDog Timer, 512 bytes.Single-chip microcomputer 2 is by SPI serial line interface control D/A change-over circuit 13 and operational amplification circuit 14, the temperature digital signal is converted into 0-5V standard analog amount output 15,0-5V standard analog amount signal to host computer transmission porcelain vase Temperature numerical also comprises a power circuit 1 of working power being provided for each control section.
Technology of the present utility model realizes principle: the utility model is to be the microcomputer control system of core formation with single-chip microcomputer 2, it has adopted the AT89S52 single-chip microcomputer that is most widely used at home of American ATMEL release as the control core, but has on-line system programming ISP function, adopt spi bus mode and peripheral communication, realized hardware optimizations.By external temperature sensor 4 temperature signal of porcelain vase is converted into electric signal and delivers to temperature controller inside, after integrated operational amplifier circuit 6 amplification filtering, deliver to A/D change-over circuit 7, under the control of single-chip microcomputer 2, realize the conversion of simulating signal to digital signal, and after by software program digital signal being carried out transferring to behind the BCD coding Temperature numerical and is exported to address latch 3 and latched by single-chip microcomputer P0 mouth, 4 charactrons (LED) of delivering in the LED display circuit 8 show the porcelain vase Temperature numerical, the break-make that while single-chip microcomputer 2 sends steering order little relay (SRD-12VDC-SL-C) in the pilot relay output circuit after address latch 3 latchs according to the porcelain vase temperature drives external contactor action, the adhesive of contactor provides working power to make its heating to electric heating tube again, electric heating tube is assemblied in around the porcelain vase, to realize to the porcelain vase accuracy control over temperature, temperature is controlled in 2 ℃ of scopes of setting value, the initial value of setting when dispatching from the factory is 100 ℃, and promptly the porcelain vase temperature is controlled between 98 ℃-100 ℃.Wherein the required intelligent requirements of system realizes by software programming, comprises that porcelain vase needs preheating just to connect functions such as electrical tar precipitator power supply, bound temperature alarming cutoff high power supply after two hours.Supervisory system has adopted multifunctional monitoring chip 12 (X5045), guarantees the long-term stability operation of system.It has the EEPROM of electrification reset, electric voltage dropping detection, WatchDog Timer, 512 bytes.This chip adopts three-wire system SPI interface mode to link to each other with single-chip microcomputer 2, the utility model is also reserved the DCS interface, transmit the standard analog amount signal of porcelain vase Temperature numerical to host computer, D/A change-over circuit 13 is converted into the temperature digital signal simulating signal output of 0-5V under the control of single-chip microcomputer 2, use for the user.Real-time displays temperature and intelligent temperature controller duty on host computer.The working power of temperature controller is directly to introduce alternating current 220V, is converted to the required various operating voltage of system by interior power supply circuit.
The utility model is made of shell body, front panel, terminal strip and circuit board.Shell body is the general purpose instrument casing of 80 x, 160 x 166mm, adorns 1. temperature display panel, 2. computer control board, 3. power panel in the casing.1, temperature display panel is used to show 4 road porcelain vase temperature signal and duties of measurement, selects 1 decoder circuit to constitute by LED display circuit 8,8.2, computer control board is made of single-chip microcomputer 2 circuit, bridge for measuring temperature circuit 5, operational amplification circuit 6 (14), A/D change-over circuit 7, D/A change-over circuit 13, address latch circuit 3 and relay output control circuit 10.3, power panel adds peripheral EMI circuit by the AC/DC module and constitutes.
Among Fig. 2, single-chip microcomputer 2 is IC10 (AT89S52), 8 single-chip microcomputers that American ATMEL is released, and it is a control core of the present utility model.Adopting IC2 (TLV1504) in the A/D change-over circuit 7 is A/D converter, 10 analog to digital converters of CMOS type of the band SPI interface that company of Texas Instruments (TI) releases, and chip has 4 tunnel simulating signal input channels, just in time is complementary with 4 road porcelain vase temperature signals.Adopting IC8, IC9 (TLV5617) in the D/A change-over circuit 13 is D/A converter, be the two-way able to programme 10 figure place weighted-voltage D/A converters of the band SPI interface of company of Texas Instruments (TI) release, two TLV5617 add up the output of 4 tunnel analog quantitys can be provided, and 4 road porcelain vase temperature signals are offered user's host computer.Multifunctional monitoring chip 12 is IC1 (X5045), and it has the EEPROM of electrification reset, electric voltage dropping detection, WatchDog Timer, 512 bytes.Function is fairly perfect, and the default value of default all leaves in this chip, and is most important to the stable operation of intelligent temperature controller.Address latch 3 is IC11, IC12, IC13 (74HC373), and the control signal that AT89S52 single-chip microcomputer P0 mouth is exported latchs.With exporting with displays temperature and driving relay.Photoelectrical coupler 9 is IC14-IC23 (TIL113), and the I/O mouth and the relay of single-chip microcomputer 2 are kept apart, and realizes the isolation of strong and weak signals, prevents the interference of being introduced by the outside.Relay output control circuit 10 adopts K01-K010 (SRD-12VDC-SL-C) relay, sends its break-make of instruction control by single-chip microcomputer, and the adhesive that drives external contactor disconnects, to reach the purpose of control porcelain vase temperature.
Carrying out cold junction by outside 4 temperature sensors (Pt100 thermal resistance), 4 electric signal of sending here in 4 passage bridge for measuring temperature 5 sends into after the compensation automatically and gives 4 road A/D change-over circuits 7 after operational amplification circuit 6 carries out amplification filtering and carry out analog to digital conversion, undertaken delivering to address latch 3 (74HC373) by single-chip microcomputer 2 P0 mouths after BCD encodes by software program after converting and carry out signal latch, 4 LED charactrons delivering to intelligent temperature controller then show.Single-chip microcomputer P0 mouth is a time-sharing multiplex, simultaneously also as the delivery outlet of controlling the indication of output and duty, single-chip microcomputer is according to the difference of actual temperature and design temperature, and the output control signal is latched by IC12, IC13 after the break-make of pilot relay (SRD-12VDC-SL-C) after the photoelectric coupler isolation.Relay can directly be controlled the adhesive or the disconnection of external contactor, has also just controlled the starting or stoping of heating of electric heating tube, thereby the temperature of electrical tar precipitator porcelain vase is controlled in the setting range.All control procedures are finished by setting software program automatically by single-chip microcomputer, functions such as automatic cutoff high power supply and sound and light alarm when comprising preheating ability being connected electrical tar precipitator high-voltage power supply and temperature anomaly in 2 hours.
IC24 (MC1403): the reference voltage conversion chip offers A/D and D/A chip as its required outside reference voltage with the DC+5V voltage transitions for accurate DC+2.5V.
Fig. 3 is the temperature display panel circuit theory diagrams, is mainly used to show the temperature value and the duty of equipment under test (porcelain vase), comprises 4 road porcelain vase heated conditions, and pilot lamp was bright when heated on certain road, otherwise extinguished, and also has the pre-thermal light of porcelain vase.
Main components and parts are as follows: LED display circuit 8 comprises: 1. IC1 (74HC138): 8 select 1 code translator, are controlled the output of IC1 by the I/O mouth output gating signal of single-chip microcomputer.2. Q1-Q5 (S8550): triode provides a gating signal to charactron.3. 2J1 (26 core terminal): this terminal and computer control board are electrically connected, and transmit signal.4. L4-L12 (light emitting diode):, be convenient to user's facilities for observation state as the temperature controller working station indicator.5. U2 (charactron): 4 charactrons are used to show the porcelain vase Temperature numerical, between 0-200 ℃.6. U3 (charactron): 1 charactron, being used to circulate shows the label of 4 road porcelain vases of surveying, demonstration circulates between the 1-4.Keyboard input circuit 11 is S1-S4: adopt and touch button, the user can finish function and parameter setting to intelligent temperature controller by these 4 buttons.
Shown in Figure 4 is power circuit 1 of the present utility model, after the AC220V input through the EMI anti-jamming circuit after the AC/DC module becomes DC12V voltage, and then through secondary isolation DC12V is become DC ± 5V and uses for system.
Its main components and parts are as follows: power circuit 1 comprises: 1. IC1 (YAS25-12-N): the AC/DC power module becomes the DC12V power supply for internal relay and photoelectrical coupler work with the AC220V of temperature control instrument input.2. IC2 (NR12D05): the DC/DC power module, with DC12V isolate once more become single-chip microcomputer and system required ± the 5V direct supply.3. L1 (UF9.8-3): 20mH common mode inductance, the common mode interference in the filtering electrical network.4. R1 (681KD14): adopt voltage dependent resistor (VDR), anti-thunder and lightning superpotential and operation instantaneous overvoltage absorb surge current, the protection temperature control instrument.5. C1-C3:X, Y electric capacity suppress electrical network string, common mode interference.
It among Fig. 5 the operation display part branch.Intelligent temperature controller is packed in the electrical control cubicles front panel, and air switch in the cabinet that closes is pressed start button, and temperature controller is promptly started working, and its operation display part is divided as shown in the figure, and each button and explicit declaration are as follows:
A is that functional parameter is provided with key (SET), presses the functional parameter that this key need to select setting.
B is an INC (▲), presses the upwards increase of functional parameter numerical value that this key is then selected.
C is a DEC
, press the functional parameter numerical value that this key then selects and reduce downwards.
D is acknowledgement key (ENT), and the parameter values of adjusting is pressed this key and can be preserved, otherwise abandons not in preservation.Avoid user misoperation.
E is the heated condition LED light, indicates 4 porcelain vases whether to be in heated condition respectively for totally 4, lights this porcelain vase of expression and heats, and stops heated condition otherwise be in.
F is a master control power LED pilot lamp, and this lamp is lighted expression master control power supply and opened, and the on high-voltage power supply is closed otherwise the master control power supply is in, and disconnects high-voltage power supply.
G is a upper and lower limit warning LED light, flicker warning reminding customer inspection heating system when the porcelain vase temperature surpasses the upper and lower limit alarming value of setting.
H is porcelain vase preheating and the normal LED light of temperature, and when porcelain vase was in 2 hours preheat modes, this lamp was lighted, otherwise extinguishes.Light when the porcelain vase temperature is normal, extinguish when having upper and lower limit to report to the police.
J is 1 high red charactron, and circulation shows tested porcelain vase number, totally 4 porcelain vases.
K is 4 high red charactrons, and circulation shows tested porcelain vase temperature indicating value.
Claims (8)
1, a kind of electrical tar precipitator intelligent temperature controller, it is characterized in that: comprise a single-chip microcomputer (2), have between described single-chip microcomputer (2) and the external temperature sensor carry out cold junction automatically compensation bridge for measuring temperature circuit (5), carry out analog-to-digital A/D change-over circuit (7), single-chip microcomputer (2) will transfer temperature data output to through the digital signal after the A/D conversion be carried out the BCD coding by software program after;
A reception single-chip microcomputer (2) thus the break-make of the instruction control relay that sends drives the action of external contactor makes the temperature of electrical tar precipitator porcelain vase be controlled at relay output control circuit (10) in the setting range;
Described single-chip microcomputer (2) is connected with the functional parameter that is used for being provided with temperature controller, comprises the keyboard input circuit (11) of the temperature of required control and upper and lower limit alarming value etc.
2, a kind of electrical tar precipitator intelligent temperature controller according to claim 1 is characterized in that: the operational amplification circuit (6) that is useful on amplification filtering between bridge for measuring temperature circuit (5), the A/D change-over circuit (7).
3, a kind of electrical tar precipitator intelligent temperature controller according to claim 1, it is characterized in that: one is connected with single-chip microcomputer (2) delivery outlet, the control signal of single-chip microcomputer (2) P0 mouth output is latched and is used for displays temperature and drives the address latch (3) of relay output.
4, a kind of electrical tar precipitator intelligent temperature controller according to claim 3 is characterized in that: described address latch (3) output terminal is connected with and carries out the LED display circuit (8) that Temperature numerical shows.
5, a kind of electrical tar precipitator intelligent temperature controller according to claim 3, it is characterized in that: described address latch (3) output terminal is connected with keeps apart the I/O mouth and the relay of single-chip microcomputer, realize the isolation of strong and weak signals, prevent photoelectrical coupler (9), photoelectrical coupler (9) output relay termination output control circuit (10) by the interference of outside introducing.
6, a kind of electrical tar precipitator intelligent temperature controller according to claim 1, it is characterized in that: described single-chip microcomputer (2) is connected with to be monitored in real time to temperature controller, has the multifunctional monitoring chip (12) of the EEPROM function of electrification reset, electric voltage dropping detection, WatchDog Timer, 512 bytes.
7, a kind of electrical tar precipitator intelligent temperature controller according to claim 1, it is characterized in that: single-chip microcomputer (2) is reserved the DCS interface and is connected D/A change-over circuit (13) and operational amplification circuit (14), to the standard analog amount signal of host computer transmission porcelain vase Temperature numerical, control D/A change-over circuit (13) and operational amplification circuit (14) are converted into the temperature digital signal simulating signal output of 0-5V.
8, a kind of electrical tar precipitator intelligent temperature controller according to claim 1 is characterized in that: also comprise a power circuit (1) of working power being provided for each control section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201902328U CN201259640Y (en) | 2008-08-12 | 2008-08-12 | Intelligent temperature control instrument for electric coke tar paving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201902328U CN201259640Y (en) | 2008-08-12 | 2008-08-12 | Intelligent temperature control instrument for electric coke tar paving device |
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| Publication Number | Publication Date |
|---|---|
| CN201259640Y true CN201259640Y (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201902328U Expired - Fee Related CN201259640Y (en) | 2008-08-12 | 2008-08-12 | Intelligent temperature control instrument for electric coke tar paving device |
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| CN (1) | CN201259640Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963726A (en) * | 2015-07-09 | 2015-10-07 | 天地（常州）自动化股份有限公司 | Mining wireless proximity inductive switch |
-
2008
- 2008-08-12 CN CNU2008201902328U patent/CN201259640Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963726A (en) * | 2015-07-09 | 2015-10-07 | 天地（常州）自动化股份有限公司 | Mining wireless proximity inductive switch |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20160812 |