CN106871632B - Real-time control device for microwave heating and drying of industrial powder materials - Google Patents
Real-time control device for microwave heating and drying of industrial powder materials Download PDFInfo
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- CN106871632B CN106871632B CN201710153170.7A CN201710153170A CN106871632B CN 106871632 B CN106871632 B CN 106871632B CN 201710153170 A CN201710153170 A CN 201710153170A CN 106871632 B CN106871632 B CN 106871632B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
Abstract
The invention relates to a real-time control device for microwave heating and drying of industrial powder materials, and belongs to the technical field of real-time embedded control. The invention mainly comprises a control computer, a ZigBee communication unit, a microwave generator unit, a charging barrel, a dehumidifying device, a rotating base, an antenna cap, a helical antenna, an insulating medium shell, a heating cavity and other components. The heating device heats materials in the cavity uniformly, and the whole device has the advantages of simple structure, low production cost, reasonable design, safety and effectiveness.
Description
Technical Field
The invention relates to a real-time control device for microwave heating and drying of industrial powder materials, in particular to a CPS-based real-time control device for microwave heating and drying of industrial powder materials, and belongs to the technical field of real-time embedded control.
Background
The industrial microwave energy application technology is praised as 'a new generation technology in twenty-first century' in developed countries and is brought into the new energy strategy of the countries, and the microwave heating has the remarkable characteristics of high quality, high efficiency, energy conservation, environmental protection and the like. The industrial powder material is heated and dried, and the field operation of personnel is needed, so that the fault tolerance rate of accidents can be reduced. However, when the powdery material is heated in the large-sized resonant cavity, the moisture extraction opening or the feeding cylinder of the traditional microwave heater has no microwave energy leakage suppressor, which easily causes the leakage of the microwave in the heater to endanger the personal safety.
Disclosure of Invention
The invention provides a CPS-based real-time control device for microwave heating and drying of industrial powder materials, which is used for effectively improving the heating and drying operation efficiency of the industrial powder materials, controlling and monitoring the field conditions in real time and the like.
The technical scheme of the invention is as follows: a real-time control device for microwave heating and drying of industrial powder materials comprises a control computer 1, a ZigBee communication unit 2, a microwave generator unit 22, a feeding barrel 8, a dehumidifying device, a rotary base 14, an antenna cap 15, a spiral antenna 16, an insulating medium shell 17, a heating cavity 20, a fan system 21, an openable material barrel opening 23, a discharging barrel 24, an air compressor 25, a material barrel connecting pipe 26 and a feeding barrel valve 31;
the control computer 1 is connected with a ZigBee communication unit 2 through a network, the ZigBee communication unit 2 is embedded into a microwave generator unit 22, the upper ends of a feeding cylinder 8 and a dehumidifying device are respectively connected with the microwave generator unit 22, the lower ends of the feeding cylinder and the dehumidifying device are respectively connected with a heating cavity 20, a feeding cylinder valve 31 is positioned inside the feeding cylinder 8, the feeding cylinder valve 31 is connected with the microwave generator unit 22 through a feeding cylinder valve control circuit, a rotary base 14 is connected with an antenna cap 15, the antenna cap 15 is connected with a spiral antenna 16, one end of an insulating medium shell 17 is connected with the microwave generator unit 22, the other end of the insulating medium shell is connected with the heating cavity 20, the insulating medium shell 17 wraps the spiral antenna 16, a fan system 21 and an openable cylinder opening 23 are arranged at the bottom of the heating cavity 20, the openable feeding cylinder opening 23 is positioned at the inner ring of the fan system 21, the openable feeding cylinder opening 23 is connected with a discharging cylinder 24, an air compressor 25 is arranged in the discharging cylinder 24, and the discharging cylinder 24 is connected with a feeding cylinder connecting pipe 26;
the microwave generator unit 22 comprises a control unit 3, a power supply unit 4, a power adjusting unit 5, a magnetron overload protection unit 6 and a magnetron 7, wherein the control unit 3 is connected with the power supply unit 4 and the power adjusting unit 5, the power adjusting unit 5 is connected with the magnetron overload protection unit 6, the magnetron overload protection unit 6 is connected with the magnetron 7, and the magnetron overload protection unit 6 and the magnetron 7 are both connected with the power supply unit 4; the control unit 3 is also connected with a charging barrel valve 31 of the charging barrel 8, the rotating base 14, the dehumidifying device, the fan system 21, the opening-closing type charging barrel opening 23 and the air compressor 25.
Preferably, the lower end of the feeding barrel 8 is connected with a microwave energy leakage suppressor II 12, and the microwave energy leakage suppressor II 12 is connected with the heating cavity 20.
Specifically, the ZigBee communication unit 2 includes an ARM controller 27, a UART conversion chip 28, an RS interface 29, a ZigBee module 30, a capacitor C1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, and a crystal oscillator X1; the UART conversion chip 28 adopts MAX232A, and the PIO2_0 pin of the ARM controller 27 is connected with the UART conversion chip 28
A pin, wherein the pin PIO2_1 of the ARM controller 27 is connected to the SI pin of the UART conversion chip 28, the pin PIO2_3 of the ARM controller 27 is connected to the SCLK pin of the UART conversion chip 28, the pin PIO2_2 of the ARM controller 27 is connected to the SO pin of the UART conversion chip 28 and one end of the resistor R1, and the other end of the resistor R1 is grounded; UART conversion chip 28->
The pin is grounded, the VSS pin of the UART conversion chip 28 is grounded and connected with one end of the capacitor C1, and the VDD pin of the UART conversion chip 28 is connected with Vcc and the other end of the capacitor C1; the XTAL1 pin of the UART conversion chip 28 is connected with one end of a capacitor C2 and one end of a crystal oscillator X1, the other end of the capacitor C2 is grounded, the other end of the crystal oscillator X1 is connected with the XTAL2 pin of the UART conversion chip 28 and one end of a capacitor C3, and the other end of the capacitor C3 is grounded; a T1IN pin of the UART conversion chip 28 is connected with a TXD pin of the RS interface 29, and an R1OUT pin of the UART conversion chip 28 is connected with an RXD pin of the RS interface 29; the T2IN pin of the UART conversion chip 28 is connected to one end of the resistor R3, the other end of the resistor R3 is connected to one end of the resistor R2 and the TXD pin of the ZigBee module 30, the other end of the resistor R2 is grounded, the R2OUT pin of the UART conversion chip 28 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to one end of the resistor R5 and the RXD pin of the ZigBee module 30, and the other end of the resistor R5 is grounded.
Specifically, the material inlet cylinder valve control circuit comprises a relay KA1, a diode D1, an NPN type triode Q1, a resistor R6, a resistor R7, a resistor R8 and a rheostat R9; the upper end of the charging barrel valve 31 is connected with one end of a resistor R6 and the lower end of a rheostat R9, the lower end of the charging barrel valve 31 is grounded, and the other end of the resistor R6 is grounded; one end of the relay KA1 is connected with the cathode of the diode D1 and the rheostat R9, and on the rheostat R9, the relay KA1 can be connected with any position between the upper end and the lower end of the rheostat R9; the other end of the relay KA1 is connected with the anode of the diode D1 and the pole electrode of the NPN-type triode Q1, the emitter of the NPN-type triode Q1 is grounded, the base of the NPN-type triode Q1 is connected with one end of the resistor R7 and one end of the resistor R8, the other end of the resistor R7 is connected with the control unit 3, and the other end of the resistor R8 is grounded.
Specifically, the dehumidifying device comprises a dehumidifying system I9, a dehumidifying system II 10, a microwave energy leakage suppressor I11, a microwave energy leakage suppressor III 13, a dehumidifying rotating wheel I32, a dehumidifying rotating wheel II 33, a rotating wheel control chip I56, a rotating wheel control chip II 57, a bus CAN1, a bus CAN2, a bus CAN3, a switch K1, a switch K2, a switch K3, a switch K4, a switch K5, a switch K6, a switch K7, a switch K8, a switch K9, a relay KA2, a relay KA3, a relay KA4, a relay KA5, a relay KA6 and a relay KA7; the rotating wheel control chip I56 and the rotating wheel control chip II 57 both adopt 8XC196MC chips, a dehumidifying system I9 and a dehumidifying system II 10 are respectively connected with the control unit 3, a dehumidifying rotating wheel I32 is positioned in the dehumidifying system I9, the bottom of the dehumidifying system I9 is connected with a microwave energy leakage suppressor I11, a dehumidifying rotating wheel II 33 is positioned in the dehumidifying system II 10, the bottom of the dehumidifying system II 10 is connected with a microwave energy leakage suppressor III 13, and the microwave energy leakage suppressor I11 and the microwave energy leakage suppressor III 13 are respectively connected with the heating cavity 20; the switch K1 is positioned on the bus CAN1, the bus CAN1 is connected with one end of the switch K6, the other end of the switch K6 is connected with one end of the relay KA4, and the other end of the relay KA4 is connected with a pin P3 of the rotating wheel control chip I56; the switch K2 is positioned on the bus CAN2, the bus CAN2 is connected with one end of the switch K5, the other end of the switch K5 is connected with one end of the relay KA3, and the other end of the relay KA3 is connected with the P2 pin of the runner control chip I56; the switch K3 is positioned on the bus CAN3, the bus CAN3 is connected with one end of the switch K4, the other end of the switch K4 is connected with one end of the relay KA2, and the other end of the relay KA2 is connected with the P1 pin of the rotating wheel control chip I56; the O1 pin of the rotating wheel control chip I56 is connected with the dehumidifying rotating wheel I32; meanwhile, one end of a switch K7 is connected with the bus CAN3, the other end of the switch K7 is connected with one end of a relay KA5, and the other end of the relay KA5 is connected with a pin P1 of a rotating wheel control chip II 57; one end of the switch K8 is connected with the bus CAN2, the other end of the switch K8 is connected with one end of the relay KA6, and the other end of the relay KA6 is connected with the P2 pin of the rotating wheel control chip II 57; one end of the switch K9 is connected with the bus CAN1, the other end of the switch K9 is connected with one end of the relay KA7, and the other end of the relay KA7 is connected with a pin P3 of the rotating wheel control chip II 57; and the O1 pin of the rotating wheel control chip II 57 is connected with the dehumidifying rotating wheel II 33.
Preferably, the device also comprises an infrared temperature measuring unit which is arranged on the inner wall of the heating cavity 20 and is connected with the control unit 3, wherein the infrared temperature measuring unit comprises an infrared temperature measuring sensing head I18, an infrared temperature measuring sensing head II 19, an optical system I34, an infrared detector I35, a modulation panel I36, a temperature sensor I37, a pre-amplification circuit I38, a pre-amplification circuit I39, a push-stage amplifier I40, a final-stage amplifier I41, a programmable gain adjusting amplifier I42, a waveform adjusting circuit I43, an A/D conversion circuit I44, an optical system II 45, an infrared detector II 46, a modulation panel II 47, a temperature sensor II 48, a pre-amplification circuit II 49, a pre-amplification circuit II 50, a push-stage amplifier II 51, a final-stage amplifier II 52, a programmable gain adjusting amplifier II 53, a waveform adjusting circuit II 54 and an A/D conversion circuit II 55; the infrared temperature measuring sensing head I18 is connected with an optical system I34, the optical system I34 is connected with an infrared detector I35 and a modulation panel I36, the modulation panel I36 is connected with a temperature sensor I37, the infrared detector I35 is connected with a pre-amplification circuit I38, the pre-amplification circuit I38 is connected with a pre-amplification circuit I39, the pre-amplification circuit I39 is connected with a push stage amplifier I40, the push stage amplifier I40 is connected with a final stage amplifier I41, the final stage amplifier I41 is connected with a programmable gain adjusting amplifier I42, the programmable gain adjusting amplifier I42 is connected with a waveform adjusting circuit I43 and an A/D conversion circuit I44, the temperature sensor I37, the waveform adjusting circuit I43 and the A/D conversion circuit I44 are respectively connected with the control unit 3 of the microwave generator unit 22, and the control unit 3 is connected with the programmable gain adjusting amplifier I42; the infrared temperature measurement sensing head II 19 is connected with an optical system II 45, the optical system II 45 is connected with an infrared detector II 46 and a modulation panel II 47, the modulation panel II 47 is connected with a temperature sensor II 48, the infrared detector II 46 is connected with a pre-amplification circuit II 49, the pre-amplification circuit II 49 is connected with a pre-amplification circuit II 50, the pre-amplification circuit II 50 is connected with a push-stage amplifier II 51, the push-stage amplifier II 51 is connected with a final-stage amplifier II 52, the final-stage amplifier II 52 is connected with a programmable gain adjustment amplifier II 53, the programmable gain adjustment amplifier II 53 is connected with a waveform adjustment circuit II 54 and an A/D conversion circuit II 55, the temperature sensor II 48, the waveform adjustment circuit II 54 and the A/D conversion circuit II 55 are respectively connected with the control unit 3 of the microwave generator unit 22, and the control unit 3 is connected with the programmable gain adjustment amplifier II 53.
The working principle of the invention is as follows:
the working personnel can carry out remote monitoring and control on the device through the control computer 1, signals are connected with the ZigBee communication unit 2 through a local area network, and the ZigBee communication unit 2 is embedded into the microwave generator unit 22 and is connected with the control unit 3. When industrial powder materials are ready to enter the heating cavity 20, a worker controls the feeding barrel valve 31 of the feeding barrel 8 to be opened through the ZigBee communication unit 2 and the control unit 3 by the control computer 1, so that the materials enter the heating cavity 20. When preparing the drying operation, the staff is started by the control computer 1, and the alternating current commercial power is transformed into the direct current high voltage required by the work and the alternating current voltage required by other equipment for the magnetron 7 after transformation, rectification and voltage stabilization filtering through the power supply unit 4. The power regulating unit 5 regulates the power needed by the magnetron 7 to provide a power supply for the magnetron 7 to be intensively regulated and controlled, and the magnetron overload protection unit 6 is used for protecting the magnetron 7 from equipment damage caused by overhigh direct-current high voltage. At this time, the rotating base 14 starts to be started, the microwave energy generated by the magnetron 7 transmits heat radiation to the helical antenna 16 through the antenna cap 15, the rotating base 14 enables the helical antenna 16 to rotate at high speed in a radial direction of 360 degrees, and the insulating medium shell 17 ensures that no energy leakage exists between the helical antenna 16 and the microwave generator unit 22 and the heating cavity 20. The fan system 21 at the bottom of the heating cavity 20 is started to blow up the powder material, so that the material dust is suspended in the heating cavity 20, the maximum area is guaranteed to receive heat radiation, the moisture on the surface of the material molecule is continuously evaporated, the moisture in the heating cavity 20 is directionally pumped away through the dehumidifying system I9 and the dehumidifying system II 10, the steam pressure migration direction in the heating cavity 20 is consistent with the heat migration direction, and the material is deeply dried. The microwave energy leakage suppressor I11, the microwave energy leakage suppressor III 13 and the microwave energy leakage suppressor II 12 are arranged at the joints of the dehumidifying system I9, the dehumidifying system II 10 and the charging barrel 8 with the heating cavity 20 respectively, so that the microwaves are prevented from leaking at the ports. The infrared temperature measurement sensing head I18 and the infrared temperature measurement sensing head II 19 monitor the temperature change in the heating cavity 20 in real time, and when the temperature deviates from a preset value, the control unit 3 can regulate the rotary base 14, the magnetron 7 and other devices to regulate the radiation amount or power, so that the temperature change returns to a preset track. In the infrared temperature measurement unit, an optical system I34 and an optical system II 45 are respectively used for enhancing the infrared rays detected by the infrared temperature measurement sensing head I18 and the infrared temperature measurement sensing head II 19 through optical effects such as refraction and the like, and sending the processed light rays into an infrared detector and a modulation panel. When the drying operation is finished, the dehumidifying system I9, the dehumidifying system II 10, the magnetron 7, the rotary base 14 and the fan system 21 stop working, after waiting for a certain time, the control unit 3 controls the openable material barrel opening 23 to be opened, and starts the air compressor 25 to suck the material into the material discharging barrel 24 from the heating cavity 20 and enter the next operation link from the material barrel connecting pipe 26.
The beneficial effects of the invention are: the microwave heating technology used by the invention has the remarkable characteristics of high quality, high efficiency, energy conservation, environmental protection and the like. According to the invention, the spiral antenna 16 is connected with the antenna cap 15, the antenna cap 15 is connected with the rotary base 14, the rotary base 14 is connected with the magnetron 7, so that heat radiation generated by the magnetron 7 uniformly heats and dries industrial powder materials through the spiral antenna 16, microwave energy is absorbed by the materials to form a temperature gradient integral heating mode from inside to outside, and a functional system formed by the dehumidifying system I9, the dehumidifying system II 10 and the fan system 21 is utilized to effectively accelerate the heating speed and uniformly heat the materials, so that the vapor pressure migration direction in the heating cavity 20 is consistent with the heat migration direction along with the continuous evaporation of water on the molecular surface of the materials, thereby deeply drying the materials; industrial powder materials enter the heating cavity 20 through the charging barrel 8, after being heated and dried, the industrial powder materials leave the heating cavity 20 through the openable charging barrel opening 23, and the charging barrel valve 31, the openable charging barrel opening 23 and the microwave generator unit 22 of the charging barrel 8 are controlled by the control unit 3 through the ZigBee communication unit 2 and the control computer 1in a network connection mode, so that the field operation of personnel can be reduced. The microwave heating device can effectively accelerate the heating speed, can control and monitor the material inlet and outlet, the output power of microwave energy and the working condition of the heating cavity in real time, uniformly heats the material in the heating cavity 20, and has the advantages of simple structure, low production cost, reasonable design, safety and effectiveness.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic circuit diagram of a ZigBee communication unit 2 of the present invention;
FIG. 3 is a schematic circuit diagram of a valve control circuit of the feeding barrel according to the present invention;
FIG. 4 is a schematic view of the construction of the dehumidifying apparatus of the present invention;
FIG. 5 is a block diagram of the structural connection of the infrared temperature measurement unit of the present invention.
The reference numbers in the figures: 1-a control computer; 2-a ZigBee communication unit; 3-a control unit; 4-a power supply unit; 5-a power regulating unit; 6-magnetron overload protection unit; 7-a magnetron; 8-feeding the materials into a material cylinder; 9-dehumidifying system I; 10-dehumidifying system II; 11-microwave energy leakage suppressor I; 12-microwave energy leakage suppressor II; 13-microwave energy leakage suppressor III; 14-a rotating base; 15-an antenna cap; 16-a helical antenna; 17-an insulating dielectric housing; 18-infrared temperature measurement sensing head I; 19-infrared temperature measurement sensing head II; 20-heating the cavity; 21-a fan system; 22-a microwave generator unit; 23-an openable material barrel opening; 24-a discharge barrel; 25-an air compressor; 26-a cartridge connecting tube; 27-ARM controller; 28-UART conversion chip; a 29-RS interface; 30-a ZigBee module; 31-a feed cylinder valve; 32-dehumidifying wheel I; 33-a dehumidifying rotating wheel II; 34-an optical system I; 35-infrared detector I; 36-chopper wheel I; 37-temperature sensor I; 38-preamplification circuit I; 39-a pre-amplifying circuit I; 40-push stage amplifier I; 41-final amplifier I; a 42-range gain adjusting amplifier I; 43-waveform adjusting circuit I; 44-A/D conversion circuit I; 45-optical system II; 46-infrared detector II; 47-chopper wheel II; 48-temperature sensor II; 49-a pre-amplifying circuit II; 50-a pre-amplifying circuit II; 51-push stage amplifier II; 52-final amplifier II; a 53-range gain adjusting amplifier II; 54-waveform adjusting circuit II; 55-A/D converting circuit II; 56-rotating wheel control chip I; 57-rotating wheel control chip II.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Example 1: as shown in fig. 1-5, a real-time control device for microwave heating and drying of industrial powder materials comprises a control computer 1, a ZigBee communication unit 2, a microwave generator unit 22, a feeding barrel 8, a dehumidifying device, a rotary base 14, an antenna cap 15, a helical antenna 16, an insulating medium shell 17, a heating cavity 20, a fan system 21, an openable material barrel opening 23, a discharging barrel 24, an air compressor 25, a material barrel connecting pipe 26, and a feeding barrel valve 31;
the control computer 1 is connected with a ZigBee communication unit 2 through a network, the ZigBee communication unit 2 is embedded into a microwave generator unit 22, the upper ends of a feeding cylinder 8 and a dehumidifying device are respectively connected with the microwave generator unit 22, the lower ends of the feeding cylinder and the dehumidifying device are respectively connected with a heating cavity 20, a feeding cylinder valve 31 is positioned inside the feeding cylinder 8, the feeding cylinder valve 31 is connected with the microwave generator unit 22 through a feeding cylinder valve control circuit, a rotary base 14 is connected with an antenna cap 15, the antenna cap 15 is connected with a spiral antenna 16, one end of an insulating medium shell 17 is connected with the microwave generator unit 22, the other end of the insulating medium shell is connected with the heating cavity 20, the insulating medium shell 17 wraps the spiral antenna 16, a fan system 21 and an openable cylinder opening 23 are arranged at the bottom of the heating cavity 20, the openable feeding cylinder opening 23 is positioned at the inner ring of the fan system 21, the openable feeding cylinder opening 23 is connected with a discharging cylinder 24, an air compressor 25 is arranged in the discharging cylinder 24, and the discharging cylinder 24 is connected with a feeding cylinder connecting pipe 26;
the microwave generator unit 22 comprises a control unit 3, a power supply unit 4, a power adjusting unit 5, a magnetron overload protection unit 6 and a magnetron 7, wherein the control unit 3 is connected with the power supply unit 4 and the power adjusting unit 5, the power adjusting unit 5 is connected with the magnetron overload protection unit 6, the magnetron overload protection unit 6 is connected with the magnetron 7, and the magnetron overload protection unit 6 and the magnetron 7 are both connected with the power supply unit 4; the control unit 3 is also connected with a feeding barrel valve 31 of the feeding barrel 8, the rotating base 14, the dehumidifying device, the fan system 21, the openable barrel opening 23 and the air compressor 25.
Furthermore, the lower end of the feeding barrel 8 is connected with a microwave energy leakage suppressor II 12, the microwave energy leakage suppressor II 12 is connected with the heating cavity 20, and the microwave can be prevented from leaking out of the connecting port of the lower end of the feeding barrel 8 and the heating cavity 20 by connecting the microwave energy leakage suppressor II 12.
Further, as shown in fig. 2, the ZigBee communication unit 2 includes an ARM controller 27, a UART conversion chip 28, an RS interface 29, a ZigBee module 30, a capacitor C1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, and a crystal oscillator X1; the UART conversion chip 28 adopts MAX232A, and the PIO2_0 pin of the ARM controller 27 is connected with the UART conversion chip 28
A pin, wherein a pin PIO2_1 of the ARM controller 27 is connected to a pin SI of the UART conversion chip 28, a pin PIO2_3 of the ARM controller 27 is connected to a pin SCLK of the UART conversion chip 28, a pin PIO2_2 of the ARM controller 27 is connected to a pin SO of the UART conversion chip 28 and one end of a resistor R1, and the other end of the resistor R1 is grounded; UART conversion chip 28->
The pin is grounded, the VSS pin of the UART conversion chip 28 is grounded and is connected with one end of the capacitor C1, and the VDD pin of the UART conversion chip 28 is connected with Vcc and the other end of the capacitor C1; the XTAL1 pin of the UART conversion chip 28 is connected with one end of a capacitor C2 and one end of a crystal oscillator X1, the other end of the capacitor C2 is grounded, the other end of the crystal oscillator X1 is connected with the XTAL2 pin of the UART conversion chip 28 and one end of a capacitor C3, and the other end of the capacitor C3 is grounded; a T1IN pin of the UART conversion chip 28 is connected with a TXD pin of the RS interface 29, and an R1OUT pin of the UART conversion chip 28 is connected with an RXD pin of the RS interface 29; one end of a T2IN pin connecting resistor R3 of the UART conversion chip 28, one end of a resistor R2 connected with the other end of the resistor R3 and a TXD pin of the ZigBee module 30, the other end of the resistor R2 is grounded, one end of a R2OUT pin connecting resistor R4 of the UART conversion chip 28 and the other end of the resistor R4 are connected with one end of a resistor R4The end is connected with one end of the resistor R5 and the RXD pin of the ZigBee module 30, and the other end of the resistor R5 is grounded. The ARM controller 27 has a variety of configurations depending on the ARM chip used, but the structure is the same, and thus the present invention is not specifically shown.
Further, as shown in fig. 3, the inlet cylinder valve control circuit includes a relay KA1, a diode D1, an NPN type triode Q1, a resistor R6, a resistor R7, a resistor R8, and a varistor R9; the upper end (i.e. end a in fig. 3) of the charging barrel valve 31 is connected with one end of a resistor R6 and the lower end (i.e. end (2) in fig. 3) of a rheostat R9, the lower end (i.e. end b in fig. 3) of the charging barrel valve 31 is grounded, and the other end of the resistor R6 is grounded; one end of the relay KA1 is connected with the cathode of the diode D1 and the rheostat R9, and on the rheostat R9, the relay KA1 can be connected with any position between the upper end and the lower end (namely, the (1) end and the (2) end in fig. 3) of the rheostat R9; the other end of the relay KA1 is connected with the anode of the diode D1 and the pole electrode of the NPN-type triode Q1, the emitter of the NPN-type triode Q1 is grounded, the base of the NPN-type triode Q1 is connected with one end of the resistor R7 and one end of the resistor R8, the other end of the resistor R7 is connected with the control unit 3, and the other end of the resistor R8 is grounded.
Further, as shown in fig. 4, the dehumidifying device includes a dehumidifying system i 9, a dehumidifying system ii 10, a microwave energy leakage suppressor i 11, a microwave energy leakage suppressor iii 13, a dehumidifying rotor i 32, a dehumidifying rotor ii 33, a rotor control chip i 56, a rotor control chip ii 57, a bus CAN1, a bus CAN2, a bus CAN3, a switch K1, a switch K2, a switch K3, a switch K4, a switch K5, a switch K6, a switch K7, a switch K8, a switch K9, a relay KA2, a relay KA3, a relay KA4, a relay KA5, a relay KA6, and a relay KA7; the rotating wheel control chip I56 and the rotating wheel control chip II 57 both adopt 8XC196MC chips, a dehumidifying system I9 and a dehumidifying system II 10 are respectively connected with the control unit 3, the dehumidifying system I9 and the dehumidifying system II 10 are respectively dehumidifying pipes, the dehumidifying rotating wheel I32 is positioned in the dehumidifying system I9, the bottom of the dehumidifying system I9 is connected with a microwave energy leakage suppressor I11, the dehumidifying rotating wheel II 33 is positioned in the dehumidifying system II 10, the bottom of the dehumidifying system II 10 is connected with a microwave energy leakage suppressor III 13, and the microwave energy leakage suppressor I11 and the microwave energy leakage suppressor III 13 are respectively connected with the heating cavity 20; the switch K1 is positioned on the bus CAN1, the bus CAN1 is connected with one end of the switch K6, the other end of the switch K6 is connected with one end of the relay KA4, and the other end of the relay KA4 is connected with a P3 pin of the runner control chip I56; the switch K2 is positioned on the bus CAN2, the bus CAN2 is connected with one end of the switch K5, the other end of the switch K5 is connected with one end of the relay KA3, and the other end of the relay KA3 is connected with the P2 pin of the runner control chip I56; the switch K3 is positioned on the bus CAN3, the bus CAN3 is connected with one end of the switch K4, the other end of the switch K4 is connected with one end of the relay KA2, and the other end of the relay KA2 is connected with the P1 pin of the rotating wheel control chip I56; an O1 pin of the rotating wheel control chip I56 represents an output signal pin, and the O1 pin of the rotating wheel control chip I56 is connected with a dehumidifying rotating wheel I32; meanwhile, one end of the switch K7 is connected with the bus CAN3, the other end of the switch K7 is connected with one end of the relay KA5, and the other end of the relay KA5 is connected with the P1 pin of the rotating wheel control chip II 57; one end of the switch K8 is connected with the bus CAN2, the other end of the switch K8 is connected with one end of the relay KA6, and the other end of the relay KA6 is connected with the P2 pin of the rotating wheel control chip II 57; one end of the switch K9 is connected with the bus CAN1, the other end of the switch K9 is connected with one end of the relay KA7, and the other end of the relay KA7 is connected with a pin P3 of the rotating wheel control chip II 57; the O1 pin of the rotating wheel control chip II 57 represents an output signal pin, and the O1 pin of the rotating wheel control chip II 57 is connected with the dehumidifying rotating wheel II 33. The rotating wheel control chip I56 and the rotating wheel control chip II 57 are used for controlling the dehumidifying rotating wheel I32 and the dehumidifying rotating wheel II 33 to rotate through the buses CAN1-CAN 3.
Further, as shown in fig. 1 and 5, the infrared temperature measuring device further includes an infrared temperature measuring unit installed on the inner wall of the heating cavity 20 and connected to the control unit 3, wherein the infrared temperature measuring unit includes an infrared temperature measuring sensor head i 18, an infrared temperature measuring sensor head ii 19, an optical system i 34, an infrared detector i 35, a modulator panel i 36, a temperature sensor i 37, a pre-amplifier circuit i 38, a pre-amplifier circuit i 39, a push-stage amplifier i 40, a final-stage amplifier i 41, a programmable gain adjusting amplifier i 42, a waveform adjusting circuit i 43, an a/D conversion circuit i 44, an optical system ii 45, an infrared detector ii 46, a modulator panel ii 47, a temperature sensor ii 48, a pre-amplifier circuit ii 49, a pre-amplifier circuit ii 50, a push-stage amplifier ii 51, a final-stage amplifier ii 52, a programmable gain adjusting amplifier ii 53, a waveform adjusting circuit ii 54, and an a/D conversion circuit ii 55; the infrared temperature measurement sensing head I18 is connected with an optical system I34, the optical system I34 is connected with an infrared detector I35 and a modulation disc I36, the modulation disc I36 is connected with a temperature sensor I37, the infrared detector I35 is connected with a pre-amplification circuit I38, the pre-amplification circuit I38 is connected with a pre-amplification circuit I39, the pre-amplification circuit I39 is connected with a push stage amplifier I40, the push stage amplifier I40 is a final stage amplifier I41, the final stage amplifier I41 is connected with a programmed gain adjustment amplifier I42, the programmed gain adjustment amplifier I42 is connected with a waveform adjustment circuit I43 and an A/D conversion circuit I44, the temperature sensor I37, the waveform adjustment circuit I43 and the A/D conversion circuit I44 are respectively connected with the control unit 3 of the microwave generator unit 22, and the control unit 3 is connected with the programmed gain adjustment amplifier I42; the infrared temperature measurement sensing head II 19 is connected with an optical system II 45, the optical system II 45 is connected with an infrared detector II 46 and a modulation disk II 47, the modulation disk II 47 is connected with a temperature sensor II 48, the infrared detector II 46 is connected with a pre-amplifying circuit II 49, the pre-amplifying circuit II 49 is connected with a pre-amplifying circuit II 50, the pre-amplifying circuit II 50 is connected with a push stage amplifier II 51, the push stage amplifier II 51 is connected with a final stage amplifier II 52, the final stage amplifier II 52 is connected with a programmed gain adjusting amplifier II 53, the programmed gain adjusting amplifier II 53 is connected with a waveform adjusting circuit II 54 and an A/D conversion circuit II 55, the temperature sensor II 48, the waveform adjusting circuit II 54 and the A/D conversion circuit II 55 are respectively connected with the control unit 3 of the microwave generator unit 22, and the control unit 3 is connected with the programmed gain adjusting amplifier II 53.
Through infrared temperature measurement unit, can real-time supervision heating cavity 20 in the temperature change, when the temperature skew predetermined value, other equipment can be adjusted to the control unit 3, and then make the temperature value in the heating cavity 20 keep near the predetermined value for the effect of heating drying reaches the best.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes and modifications can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (1)
1. The utility model provides a dry real time control device of industry powder material microwave heating which characterized in that: the device comprises a control computer (1), a ZigBee communication unit (2), a microwave generator unit (22), a feeding barrel (8), a dehumidifying device, a rotating base (14), an antenna cap (15), a spiral antenna (16), an insulating medium shell (17), a heating cavity (20), a fan system (21), an openable material barrel opening (23), a discharging barrel (24), an air compressor (25), a material barrel connecting pipe (26) and a feeding barrel valve (31);
the control computer (1) is connected with the ZigBee communication unit (2) through a network, the ZigBee communication unit (2) is embedded into a microwave generator unit (22), the upper ends of a feeding cylinder (8) and a dehumidifying device are respectively connected with the microwave generator unit (22), the lower ends of the feeding cylinder and the dehumidifying device are respectively connected with a heating cavity (20), a feeding cylinder valve (31) is positioned inside the feeding cylinder (8), the feeding cylinder valve (31) is connected with the microwave generator unit (22) through a feeding cylinder valve control circuit, a rotating base (14) is connected with an antenna cap (15), the antenna cap (15) is connected with a spiral antenna (16), one end of an insulating medium shell (17) is connected with the microwave generator unit (22), the other end of the insulating medium shell is connected with the heating cavity (20), the insulating medium shell (17) wraps the spiral antenna (16), a fan system (21) is arranged at the bottom of the heating cavity (20), an openable cylinder opening (23) is formed, the openable cylinder opening (23) is positioned at the inner ring of the fan system (21), the openable cylinder opening (23) is connected with a discharge cylinder (24), an air pressure (25) in the discharge cylinder (24) is connected with a compressor (26);
the microwave generator unit (22) comprises a control unit (3), a power supply unit (4), a power adjusting unit (5), a magnetron overload protection unit (6) and a magnetron (7), wherein the control unit (3) is connected with the power supply unit (4) and the power adjusting unit (5), the power adjusting unit (5) is connected with the magnetron overload protection unit (6), the magnetron overload protection unit (6) is connected with the magnetron (7), and the magnetron overload protection unit (6) and the magnetron (7) are both connected with the power supply unit (4); the control unit (3) is also connected with a feed cylinder valve (31) of the feed cylinder (8), a rotating base (14), a dehumidifying device, a fan system (21), an openable feed cylinder opening (23) and an air compressor (25);
the lower end of the feeding barrel (8) is connected with a microwave energy leakage suppressor II (12), and the microwave energy leakage suppressor II (12) is connected with a heating cavity (20);
the ZigBee communication unit (2) comprises an ARM controller (27), a UART conversion chip (28), an RS interface (29), a ZigBee module (30), a capacitor C1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5 and a crystal oscillator X1; the UART conversion chip (28) adopts MAX232A, a PIO2_0 pin of the ARM controller (27) is connected with a pin of the UART conversion chip (28), wherein a PIO2_1 pin of the ARM controller (27) is connected with an SI pin of the UART conversion chip (28), a PIO2_3 pin of the ARM controller (27) is connected with an SCLK pin of the UART conversion chip (28), a PIO2_2 pin of the ARM controller (27) is connected with an SO pin of the UART conversion chip (28) and one end of a resistor R1, and the other end of the resistor R1 is grounded; the pin of the UART conversion chip (28) is grounded, the VSS pin of the UART conversion chip (28) is grounded and is connected with one end of the capacitor C1, and the VDD pin of the UART conversion chip (28) is connected with Vcc and the other end of the capacitor C1; the XTAL1 pin of the UART conversion chip (28) is connected with one end of a capacitor C2 and one end of a crystal oscillator X1, the other end of the capacitor C2 is grounded, the other end of the crystal oscillator X1 is connected with the XTAL2 pin of the UART conversion chip (28) and one end of a capacitor C3, and the other end of the capacitor C3 is grounded; a T1IN pin of the UART conversion chip (28) is connected with a TXD pin of the RS interface (29), and an R1OUT pin of the UART conversion chip (28) is connected with an RXD pin of the RS interface (29); a T2IN pin of the UART conversion chip (28) is connected with one end of a resistor R3, the other end of the resistor R3 is connected with one end of a resistor R2 and a TXD pin of the ZigBee module (30), the other end of the resistor R2 is grounded, an R2OUT pin of the UART conversion chip (28) is connected with one end of a resistor R4, the other end of the resistor R4 is connected with one end of a resistor R5 and an RXD pin of the ZigBee module (30), and the other end of the resistor R5 is grounded;
the feeding cylinder valve control circuit comprises a relay KA1, a diode D1, an NPN type triode Q1, a resistor R6, a resistor R7, a resistor R8 and a rheostat R9; the upper end of the charging barrel valve (31) is connected with one end of a resistor R6 and the lower end of a rheostat R9, the lower end of the charging barrel valve (31) is grounded, and the other end of the resistor R6 is grounded; one end of the relay KA1 is connected with the cathode of the diode D1 and the rheostat R9, and on the rheostat R9, the relay KA1 can be connected with any part between the upper end and the lower end of the rheostat R9; the other end of the relay KA1 is connected with the anode of the diode D1 and the pole electrode of the NPN type triode Q1, the emitting electrode of the NPN type triode Q1 is grounded, the base electrode of the NPN type triode Q1 is connected with one end of a resistor R7 and one end of a resistor R8, the other end of the resistor R7 is connected with the control unit (3), and the other end of the resistor R8 is grounded;
the dehumidifying device comprises a dehumidifying system I (9), a dehumidifying system II (10), a microwave energy leakage suppressor I (11), a microwave energy leakage suppressor III (13), a dehumidifying rotating wheel I (32), a dehumidifying rotating wheel II (33), a rotating wheel control chip I (56), a rotating wheel control chip II (57), a bus CAN1, a bus CAN2, a bus CAN3, a switch K1, a switch K2, a switch K3, a switch K4, a switch K5, a switch K6, a switch K7, a switch K8, a switch K9, a relay KA2, a relay KA3, a relay KA4, a relay KA5, a relay KA6 and a relay KA7; the rotating wheel control chip I (56) and the rotating wheel control chip II (57) both adopt 8XC196MC chips, a dehumidifying system I (9) and a dehumidifying system II (10) are respectively connected with the control unit (3), the dehumidifying rotating wheel I (32) is positioned inside the dehumidifying system I (9), the bottom of the dehumidifying system I (9) is connected with a microwave energy leakage suppressor I (11), the dehumidifying rotating wheel II (33) is positioned inside the dehumidifying system II (10), the bottom of the dehumidifying system II (10) is connected with a microwave energy leakage suppressor III (13), and the microwave energy leakage suppressor I (11) and the microwave energy leakage suppressor III (13) are respectively connected with the heating cavity (20); the switch K1 is positioned on the bus CAN1, the bus CAN1 is connected with one end of the switch K6, the other end of the switch K6 is connected with one end of the relay KA4, and the other end of the relay KA4 is connected with a P3 pin of the runner control chip I (56); the switch K2 is positioned on the bus CAN2, the bus CAN2 is connected with one end of the switch K5, the other end of the switch K5 is connected with one end of the relay KA3, and the other end of the relay KA3 is connected with a P2 pin of the rotating wheel control chip I (56); the switch K3 is positioned on the bus CAN3, the bus CAN3 is connected with one end of the switch K4, the other end of the switch K4 is connected with one end of the relay KA2, and the other end of the relay KA2 is connected with a P1 pin of the runner control chip I (56); the O1 pin of the rotating wheel control chip I (56) is connected with the dehumidifying rotating wheel I (32); meanwhile, one end of the switch K7 is connected with the bus CAN3, the other end of the switch K7 is connected with one end of the relay KA5, and the other end of the relay KA5 is connected with a pin P1 of the rotating wheel control chip II (57); one end of the switch K8 is connected with the bus CAN2, the other end of the switch K8 is connected with one end of the relay KA6, and the other end of the relay KA6 is connected with a pin P2 of the rotating wheel control chip II (57); one end of a switch K9 is connected with the bus CAN1, the other end of the switch K9 is connected with one end of a relay KA7, and the other end of the relay KA7 is connected with a pin P3 of a rotating wheel control chip II (57); the O1 pin of the rotating wheel control chip II (57) is connected with the dehumidifying rotating wheel II (33);
the temperature control device is characterized by further comprising an infrared temperature measurement unit which is arranged on the inner wall of the heating cavity (20) and connected with the control unit (3), wherein the infrared temperature measurement unit comprises an infrared temperature measurement sensing head I (18), an infrared temperature measurement sensing head II (19), an optical system I (34), an infrared detector I (35), a modulation panel I (36), a temperature sensor I (37), a pre-amplification circuit I (38), a pre-amplification circuit I (39), a push-stage amplifier I (40), a final-stage amplifier I (41), a program gain adjustment amplifier I (42), a waveform adjustment circuit I (43), an A/D conversion circuit I (44), an optical system II (45), an infrared detector II (46), a modulation panel II (47), a temperature sensor II (48), a pre-amplification circuit II (49), a pre-amplification circuit II (50), a push-stage amplifier II (51), an amplifier II (52), a program gain adjustment amplifier II (53), a waveform adjustment circuit II (54) and an A/D conversion circuit II (55); the infrared temperature measurement sensing head I (18) is connected with an optical system I (34), the optical system I (34) is connected with an infrared detector I (35) and a modulation panel I (36), the modulation panel I (36) is connected with a temperature sensor I (37), the infrared detector I (35) is connected with a pre-amplification circuit I (38), the pre-amplification circuit I (38) is connected with a pre-amplification circuit I (39), the pre-amplification circuit I (39) is connected with a push-stage amplifier I (40), the push-stage amplifier I (40) is connected with a final-stage amplifier I (41), the final-stage amplifier I (41) is connected with a stroke-modulation gain adjustment amplifier I (42), the stroke-modulation gain adjustment amplifier I (42) is connected with a waveform adjustment circuit I (43) and an A/D conversion circuit I (44), the temperature sensor I (37), the waveform adjustment circuit I (43) and the A/D conversion circuit I (44) are respectively connected with a control unit (3) of the microwave generator unit (22), and the control unit (3) is connected with the stroke-modulation gain adjustment amplifier I (42); the infrared temperature measurement sensing head II (19) is connected with an optical system II (45), the optical system II (45) is connected with an infrared detector II (46) and a modulation disc II (47), the modulation disc II (47) is connected with a temperature sensor II (48), the infrared detector II (46) is connected with a pre-amplification circuit II (49), the pre-amplification circuit II (49) is connected with a pre-amplification circuit II (50), the pre-amplification circuit II (50) is connected with a push-stage amplifier II (51), the push-stage amplifier II (51) is connected with a final-stage amplifier II (52), the final-stage amplifier II (52) is connected with a stroke gain adjustment amplifier II (53), the stroke gain adjustment amplifier II (53) is connected with a waveform adjustment circuit II (54) and an A/D conversion circuit II (55), the temperature sensor II (48), the waveform adjustment circuit II (54) and the A/D conversion circuit II (55) are respectively connected with a control unit (3) of the microwave generator unit (22), and the control unit (3) is connected with the stroke gain adjustment amplifier II (53).
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| CN201710153170.7A CN106871632B (en) | 2017-03-15 | 2017-03-15 | Real-time control device for microwave heating and drying of industrial powder materials |
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