CN106774522A - A kind of vacuum dryer control system of nano phase change energy storage material - Google Patents
A kind of vacuum dryer control system of nano phase change energy storage material Download PDFInfo
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- CN106774522A CN106774522A CN201710200206.2A CN201710200206A CN106774522A CN 106774522 A CN106774522 A CN 106774522A CN 201710200206 A CN201710200206 A CN 201710200206A CN 106774522 A CN106774522 A CN 106774522A
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- 230000008859 change Effects 0.000 title claims abstract description 33
- 238000004146 energy storage Methods 0.000 title claims abstract description 27
- 239000011232 storage material Substances 0.000 title claims abstract description 27
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims description 32
- 238000009966 trimming Methods 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 8
- 238000001035 drying Methods 0.000 abstract description 28
- 239000012071 phase Substances 0.000 description 20
- 238000010438 heat treatment Methods 0.000 description 7
- 230000008054 signal transmission Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000001291 vacuum drying Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000012782 phase change material Substances 0.000 description 1
- 229910052615 phyllosilicate Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/22—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element being a thermocouple
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of vacuum dryer control system of nano phase change energy storage material, it is characterized in that, mainly by microprocessor, power supply, the first relay, memory module, signal processing system and the display screen being connected with microprocessor, the thermocouple being connected with power supply, the second relay being connected with thermocouple, the alarm being connected with the second relay, the temperature sensor being connected with signal processing system, and the data inserter composition being connected with memory module.Temperature sensor of the invention can be monitored to the temperature in drying chamber, and the signal of temperature sensor output can be processed by signal processing system, make signal more accurate, more stable, microprocessor is set to receive accurate temperature information, accuracy of the present invention to the drying temperature control of vacuum dryer is ensured that, the quality of nano phase change energy storage material is effectively raised.
Description
Technical field
It is a kind of vacuum dryer of nano phase change energy storage material specifically the present invention relates to a kind of control system
Control system.
Background technology
Phase-changing energy storage material (PCM-Phase Change Material) refers to vary with temperature and change state of matter simultaneously
The material of latent heat can be provided, wherein nano phase change energy storage material is optimal environmental protection carrier in phase-changing energy storage material.Nanometer
Phase-changing energy storage material is phyllosilicate is modified using quaternary ammonium salt, concentrated hydrochloric acid, the dissolving of water Hybrid Heating, then in stratiform
Add after soluble quaternary ammonium salt and water mixing and carry out suction filtration after heating stirring is reacted 10~14 hours in silicate, and with hot
After water washing air-dry and be vacuum dried；Finally organic phase change material, NaHCO3, water Hybrid Heating, make solid formation entirely molten,
The organic phase change material of dissolving, modified sheet silicate, water mixing, the high-speed stirred at a temperature of 80~90 DEG C, reaction 14~18
Hour suction filtration, with hot wash to without quaternary ammonium salt, vacuum drying again is obtained the nano combined phase transformation storage of organic-inorganic
Can material.And whether the quality of nano phase change energy storage material is then stablized depending on the drying temperature of vacuum dryer.
However, temperature control of the vacuum dryer control system of existing nano phase change energy storage material to firing equipment
Accuracy it is poor, cause the difference of the stability of the indoor temperature of vacuum drying, cause the of poor quality of nano phase change energy storage material,
So as to the serious life that have impact on people.
The content of the invention
Vacuum dryer control system pair it is an object of the invention to overcome existing nano phase change energy storage material adds
The poor defect of the temperature controlled accuracy of hot equipment, there is provided a kind of nano phase change energy storage material vacuum dryer control
System processed.
The present invention is achieved through the following technical solutions：A kind of vacuum dryer control system of nano phase change energy storage material
System, mainly by microprocessor, the power supply that is connected with microprocessor, the first relay, memory module, signal processing system and
Display screen, the thermocouple being connected with power supply, the second relay being connected with thermocouple, the report being connected with the second relay
Alert device, the temperature sensor being connected with signal processing system, and the data inserter composition being connected with memory module；Institute
Power supply is stated to be connected with temperature sensor；The memory module is connected with display screen；The signal processing system is by AD conversion
Device, the digital signal processor being connected with converter, the step low-pass active power filtering being connected with digital signal processor
Circuit, the signal amplifier being connected with step low-pass active filter circuit, and program control declining of being connected with signal amplifier
Subtract device composition；The step low-pass active filter circuit is by second-order filter circuit, the RC low passes being connected with second-order filter circuit
Filter circuit, and it is serially connected in the signal trimming circuit composition between second-order filter circuit and RC low-pass filter circuits；Described two
The output end of rank filter circuit is connected with temperature sensor；The output end of the RC low-pass filter circuits is connected with microprocessor
Connect.
By amplifier P1, one end is connected the second-order filter circuit with the positive pole of amplifier P1, the other end and temperature are passed
The resistance R1 that sensor is connected, one end is connected with the positive pole of amplifier P1, the other end is connected with the output end of amplifier P1
Resistance R3, the polar capacitor C1 that positive pole is connected with the positive pole of amplifier P1, negative pole is connected with the output end of amplifier P1,
And negative pole be connected with the negative pole of amplifier P1 after ground connection, positive pole is connected after resistance R4 with the output end of amplifier P1
Polar capacitor C2 is constituted；The output end of the amplifier P1 is connected with RC low-pass filter circuits；The polar capacitor C1 is just
Pole is also connected with signal trimming circuit.
The RC low-pass filter circuits by amplifier P3, one end is connected with the output end of amplifier P1, the other end with put
The resistance R5 that the positive pole of big device P3 is connected, positive pole is connected with the positive pole of amplifier P3, the polar capacitor C5 of negative pole ground connection, just
Pole is connected with the negative pole of amplifier P3, the polar capacitor C4 of negative pole ground connection, and one end is connected with the negative pole of polar capacitor C4
Connect, the resistance R8 that the other end is connected with the output end of amplifier P3 is constituted；The output end of the amplifier P3 is finely tuned with signal
Circuit is connected, the output end of amplifier P3 also as RC low-pass filter circuits output end and be connected with microprocessor.
By amplifier P2, one end is connected the signal trimming circuit with the positive pole of polar capacitor C1, the other end and amplification
The resistance R2 that the output end of device P2 is connected, negative pole is connected with the output end of amplifier P2, positive pole after adjustable resistance R6 with
The polar capacitor C3 that the negative pole of amplifier P2 is connected, and one end be connected with the output end of amplifier P3, the other end with put
The resistance R7 compositions that the negative pole of big device P2 is connected；The plus earth of the amplifier P2.
For practical effect of the invention, the microprocessor is AT89C51 single-chip microcomputers.
The present invention compared with prior art, with advantages below and beneficial effect：
(1) simple structure of the invention, practical, and temperature sensor of the invention can be carried out to the temperature in drying chamber
Monitor, and the signal of temperature sensor output can be processed by signal processing system, make signal more accurate, more stable,
Microprocessor is received accurate temperature information, ensure that drying temperature control of the present invention to vacuum dryer
Accuracy, effectively raise the quality of nano phase change energy storage material.
(2) second-order filter circuit and RC low-pass filter circuits are provided with signal processing system of the invention and signal is micro-
Adjusting circuit, the second-order filter circuit can be suppressed or be eliminated to the garbage signal frequency in signal；RC low-pass filter circuit energy
High-frequency reduction of speed in effectively accelerating to signal；Signal trimming circuit can be adjusted to the frequency of signal, make signal
Frequency is more stable, so as to improve accuracy of the present invention to the drying temperature control of vacuum dryer.
(3) carried out come the temperature in the drying chamber to vacuum dryer with thermocouple present invention employs temperature sensor
Monitoring, can effectively prevent the temperature in the drying chamber of vacuum dryer from too high or too low situation occur, ensure that
The stability of the temperature in the drying chamber of vacuum dryer, improves the dry mass of nano phase change energy storage material.
Brief description of the drawings
Fig. 1 is entire block diagram of the invention.
Fig. 2 is the entire block diagram of signal processing system of the invention.
Fig. 3 is the electrical block diagram of step low-pass active filter circuit of the invention.
Specific embodiment
The present invention is described in further detail with reference to embodiment and its accompanying drawing, but embodiments of the present invention are not
It is limited to this.
Embodiment
As shown in figure 1, the present invention is main by microprocessor, the power supply being connected with microprocessor, the first relay, deposit
Storage module, signal processing system and display screen, the thermocouple being connected with power supply, the second relay being connected with thermocouple,
The alarm being connected with the second relay, the temperature sensor being connected with signal processing system, and with memory module phase
The data inserter composition of connection.The power supply is connected with temperature sensor.The memory module is connected with display screen.
As shown in Fig. 2 it is by converter, digital signal processor, step low-pass has wherein described signal processing system
Power filter, signal amplifier, and programmable attenuator composition.The step low-pass active filter circuit as shown in figure 3, its
By second-order filter circuit, RC low-pass filter circuits, and signal trimming circuit composition.
During implementation, microprocessor of the invention employs AT89C51 single-chip microcomputers to realize, the P1 pins and number of the single-chip microcomputer
It is connected according to memory module, P3 pins are connected with display screen, P1.4 pins are connected with alarm, P0 pins and signal transacting
System is connected, and P1.5 pins are connected with the first relay, and P1.6 pins are connected with the second relay, VCC pins with electricity
Source is connected.Power supply of the invention is 12V DC voltages, and the 12V DC voltages are powered to whole system.Wherein, the first relay
Device and the second relay employ the MGR-1D4860 type single-phase solid relays of your production of MAG, the environment temperature of the relay
It is -30 DEG C~+75 DEG C to spend, and its service life is more long.The heating of described the first relay and the heater of vacuum dryer
The electrode tip electrical connection of pipe, and electrode tip of second relay then with the motor of the air exhauster of vacuum dryer is electrically connected.
The KM37V-10-05 types temperature that temperature sensor of the invention employs the production of Shanghai Qin Dou wisdom scientific ＆ technical corporation is passed
Sensor, the temperature sensor is arranged on the drying on cavity wall of vacuum dryer, for being supervised to the temperature in drying chamber
Survey, the resistance of the thermocouple in temperature sensor can change with the change for drying cavity temperature, i.e. temperature sensor output
Signal can change with the change for drying cavity temperature, the signal transmission that temperature sensor will be monitored gives signal transacting system
System.The signal processing system transmits a signal to microprocessor after processing the signal that temperature sensor is transmitted, effectively
Ensure that monolithic function receives accurate information.The signal of reception is converted to data-signal, microprocessor by the microprocessor
Interior data identifier obtains a temperature value after processing data-signal, the temperature that the comparator in microprocessor will be obtained
Angle value is compared with the temperature value of data memory module memory storage.Memory module of the invention employs the life of Ze Yao scientific ＆ technical corporation
The AS01-ML01DP3 memory modules of product, prestore the temperature value needed for nano phase change energy storage material is dried in the memory module.
Temperature value needed for nano phase change energy storage material is dried is stored in memory module by after data inputting device, the data
Input device is Shanghai Cadence research institute and Super--R companies of U.S. cooperation research and development HT-1 type electronic data input devices, the number
It is fast, accurate according to the data decomposition rate of input device.
During operation, when switching on power, microprocessor obtains electric, and the microprocessor output control electric current gives the first relay, the
The normally-closed contact of one relay is closure state, and the heater of vacuum dryer obtains electric, and heater is vacuum dryer
Air heating in drying chamber.When the temperature value that microprocessor is obtained is identical with the temperature value prestored in memory module, micro- place
Reason device then stops output control electric current to the first relay, and the first relay electric-loss release, the normally-closed contact of the first relay breaks
Open, the heating tube dead electricity of the heater dead electricity of vacuum dryer, i.e. heater, heater stops heating, sets vacuum drying
The temperature of the hot-air in standby drying chamber is no longer raised.Now, the temperature of the hot-air in the drying chamber of vacuum dryer
It is consistent with the temperature value prestored in memory module.Thermocouple is now big resistance, and it is low-voltage to be loaded on the second relay,
Second relay is not turned on, and air exhauster does not work.So that the temperature in the drying chamber of vacuum dryer can be protected well
Hold in the temperature value needed for nano phase change energy storage material is dried.
Thermocouple of the invention employs the WRET-01 type thermocouples of Shanghai Wo Lan finite instruments company production, the thermoelectricity
Occasionally it is arranged on drying on cavity wall for vacuum dryer, for being monitored to the temperature in drying chamber, the resistance of thermocouple
Can change with the change for drying cavity temperature.
When temperature sensor is damaged, the temperature in the drying chamber of vacuum dryer can be then innovated higher than in memory module
Temperature value situation, now, the resistance of thermocouple can then reduce therewith, and it is electricity high to be loaded into voltage on the second relay
Pressure, the normally opened contact closure of the second relay, air exhauster obtains electric, and air exhauster is started working, in the drying chamber of vacuum dryer
Hot-air be discharged, reduce the hot air temperature in drying chamber, enable the temperature in temperature in drying chamber and memory module
Angle value is consistent.Meanwhile, ensure that the dry quality of nano phase change energy storage material.
Temperature sensor of the invention forms the dual of the temperature in the drying chamber to vacuum dryer with thermocouple
Monitoring, can effectively prevent the temperature in the drying chamber of vacuum dryer from too high or too low situation occur, ensure that
The stability of the temperature in the drying chamber of vacuum dryer, improves the dry mass of nano phase change energy storage material.
As shown in Fig. 2 the signal processing system is by converter, digital signal processor, step low-pass active power filtering
Circuit, signal amplifier, and programmable attenuator composition.Converter of the invention preferentially employs Shenzhen section victory moral electronic section
The AD9280ARS type converters of skill company production, at the current signal that the converter is transmitted to temperature sensor
Be converted into data-signal after reason, converter and by the data signal transmission after conversion to digital signal processor.The number
Word signal processor selects the preferential AT89S52-24AU type Digital Signal Processing for employing the production of ATMEL (Ai Temeier) company in ground
Device, digital signal processor can be measured and filtered to data signal, make the frequency of data signal more stable, at data signal
Digital data transmission after treatment is given step low-pass active filter circuit by reason device.The step low-pass active filter circuit is to signal
In garbage signal frequency suppressed or eliminated, and the high-frequency reduction of speed in effectively accelerating to signal, while to letter
Number frequency be adjusted, make the frequency of signal more stable, step low-pass active filter circuit gives the signal transmission after treatment
Signal amplifier, the signal amplifier is adjusted to the bandwidth and frequency of signal, makes the signal bandwidth of output and frequency and adopts
The bandwidth of sample signal is identical with frequency, signal amplifier then by the signal transmission after adjustment to programmable attenuator, the program control decay
Device is the GVAS2-6-60-2.5-D-C type programmable attenuators of Shanghai Ting Jiang Electronic Science and Technology Co., Ltd.s, and programmable attenuator can be to defeated
The microwave power level and power output for going out signal are controlled, when the mixing of signal that exports it is more stable, programmable attenuator will
Signal transmission after treatment ensures that the accuracy of the signal that microprocessor of the invention is received to microprocessor.
Described step low-pass active filter circuit as shown in figure 3, it is by second-order filter circuit, RC low-pass filter circuits,
And signal trimming circuit composition.Wherein, the second-order filter circuit by model OP364 amplifier P1, resistance be 82K Ω
Resistance R1, resistance for 15K Ω resistance R3, resistance R4, capacitance is the polar capacitor C1 of 0.1 μ F, and capacitance is 100 μ F
Polar capacitor C2 is constituted.
During connection, one end of resistance R1 is connected with the positive pole of amplifier P1, and the other end is connected with temperature sensor.Electricity
The one end for hindering R3 is connected with the positive pole of amplifier P1, and the other end is connected with the output end of amplifier P1.Polar capacitor C1's
Positive pole is connected with the positive pole of amplifier P1, and negative pole is connected with the output end of amplifier P1.The negative pole of polar capacitor C2 with put
The negative pole of big device P1 is grounded after being connected, and output end of the positive pole with amplifier P1 after resistance R4 is connected.The amplifier P1
Output end be connected with RC low-pass filter circuits；The positive pole of the polar capacitor C1 is also connected with signal trimming circuit.
Further, the RC low-pass filter circuits as shown in figure 3, its by model OP364 amplifier P3, resistance is
The resistance R5 of 10K Ω, resistance is the resistance R8 of 15K Ω, and capacitance is the polar capacitor C4 of 0.1 μ F, and the pole that capacitance is 100 μ F
Property electric capacity C5 composition.
During connection, one end of resistance R5 is connected with the output end of amplifier P1, the positive pole phase of the other end and amplifier P3
Connection.The positive pole of polar capacitor C5 is connected with the positive pole of amplifier P3, negative pole ground connection.The positive pole and amplifier of polar capacitor C4
The negative pole of P3 is connected, negative pole ground connection.One end of resistance R8 is connected with the negative pole of polar capacitor C4, the other end and amplifier P3
Output end be connected.The output end of the amplifier P3 is connected with signal trimming circuit, and the output end of amplifier P3 is also
As RC low-pass filter circuits output end and be connected with the P0 pins of AT89C51 single-chip microcomputers.
Yet further, the signal trimming circuit as shown in figure 3, its by model OP364 amplifier P2, resistance is
The resistance R2 of 100K Ω, resistance is the adjustable resistance R6 of 0~100K Ω, and resistance is the resistance R7 of 10K Ω, and capacitance is 0.1 μ
The polar capacitor C3 compositions of F.
During connection, one end of resistance R2 is connected with the positive pole of polar capacitor C1, the output end of the other end and amplifier P2
It is connected.The negative pole of polar capacitor C3 is connected with the output end of amplifier P2, positive pole after adjustable resistance R6 with amplifier P2
Negative pole be connected.One end of resistance R7 is connected with the output end of amplifier P3, and the other end is connected with the negative pole of amplifier P2
Connect.The plus earth of the amplifier P2.
During operation, the power frequency of the current signal that the resistance R1 of second-order filter circuit is exported to digital signal processor enters
Row limitation, makes the power frequency of signal more stable, signal then amplified device P1, polar capacitor C1 and electricity after power frequency limitation
The first wave filter that resistance R3 is formed is filtered, and the wave filter effectively can disappear to the garbage signal frequency in input signal
Remove, the second wave filter that polar capacitor C2 and resistance R4 is formed is filtered again to the signal after the first filter filtering, is made
The electric current of signal remains ± 4A, it is ensured that the stability of signal frequency.Then, the signal transmission after second-order filter circuit treatment
RC low-pass filter circuits are given, the resistance R5 and polar capacitor C5 of the RC low-pass filter circuits suppress to the high-frequency of signal,
The high-frequency in signal is set quickly to reduce, the signal transmission after high-frequency suppression is to amplifier P3, polar capacitor C4 and electricity
The filter amplifier that resistance R8 is formed enters line frequency adjustment, makes the frequency of signal close with the frequency of sampled signal.Wherein, it is serially connected in
The signal trimming circuit of RC low-pass filter circuits and second-order filter circuit then can by the regulation of the resistance to adjustable resistance R6 come
Frequency to signal is further adjusted, and the wave filter that the polar capacitor C3 and amplifier P2 in the circuit are formed is to signal
The garbage signal of middle residual is transferred to microprocessor after being filtered again by amplifier P3.
Therefore, the step low-pass active filter circuit in the signal processing system of invention is to the garbage signal frequency in signal
Suppress or eliminated, and can to signal in high-frequency reduction of speed, the also frequency to signal adjusted, and makes signal
Frequency is more stable, so as to improve accuracy of the present invention to the drying temperature control of vacuum dryer.
According to above-described embodiment, you can realize the present invention well.
Claims (5)
1. a kind of vacuum dryer control system of nano phase change energy storage material, it is characterised in that main by microprocessor,
Power supply, the first relay, memory module, signal processing system and the display screen being connected with microprocessor, are connected with power supply
Thermocouple, the second relay being connected with thermocouple, the alarm being connected with the second relay, with signal processing system
The temperature sensor being connected, and the data inserter composition being connected with memory module；The power supply and temperature sensor
It is connected；The memory module is connected with display screen；The signal processing system is connected by converter with converter
Digital signal processor, the step low-pass active filter circuit being connected with digital signal processor is active with step low-pass
The signal amplifier that filter circuit is connected, and the programmable attenuator composition being connected with signal amplifier；The second order is low
Power filter is connected with by second-order filter circuit, the RC low-pass filter circuits being connected with second-order filter circuit, and is serially connected in
Signal trimming circuit composition between second-order filter circuit and RC low-pass filter circuits；The output end of the second-order filter circuit with
Temperature sensor is connected；The output end of the RC low-pass filter circuits is connected with microprocessor.
2. a kind of vacuum dryer control system of nano phase change energy storage material according to claim 1, its feature exists
In, the second-order filter circuit by amplifier P1, one end is connected with the positive pole of amplifier P1, the other end and temperature sensor phase
The resistance R1 of connection, the resistance that one end is connected with the positive pole of amplifier P1, the other end is connected with the output end of amplifier P1
R3, the polar capacitor C1 that positive pole is connected with the positive pole of amplifier P1, negative pole is connected with the output end of amplifier P1, and it is negative
The polarity electricity that pole is grounded after being connected with the negative pole of amplifier P1, positive pole is connected after resistance R4 with the output end of amplifier P1
Hold C2 compositions；The output end of the amplifier P1 is connected with RC low-pass filter circuits；The positive pole of the polar capacitor C1 also with
Signal trimming circuit is connected.
3. a kind of vacuum dryer control system of nano phase change energy storage material according to claim 2, its feature exists
In, RC low-pass filter circuits by amplifier P3, one end is connected with the output end of amplifier P1, the other end and amplifier P3
The resistance R5 that is connected of positive pole, positive pole is connected with the positive pole of amplifier P3, the polar capacitor C5 of negative pole ground connection, positive pole with put
The negative pole of big device P3 is connected, the polar capacitor C4 of negative pole ground connection, and one end be connected with the negative pole of polar capacitor C4, it is another
The resistance R8 compositions that end is connected with the output end of amplifier P3；The output end of the amplifier P3 is connected with signal trimming circuit
Connect, the output end of amplifier P3 also as RC low-pass filter circuits output end and be connected with microprocessor.
4. a kind of vacuum dryer control system of nano phase change energy storage material according to claim 3, its feature exists
In, the signal trimming circuit by amplifier P2, one end is connected with the positive pole of polar capacitor C1, the other end and amplifier P2
The resistance R2 that output end is connected, negative pole is connected with the output end of amplifier P2, positive pole after adjustable resistance R6 with amplifier
The polar capacitor C3 that the negative pole of P2 is connected, and one end be connected with the output end of amplifier P3, the other end and amplifier P2
Negative pole be connected resistance R7 composition；The plus earth of the amplifier P2.
5. a kind of vacuum dryer control system of nano phase change energy storage material according to claim 4, its feature exists
In the microprocessor is AT89C51 single-chip microcomputers.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803708A (en) * | 2018-02-23 | 2018-11-13 | 深圳市物联微电子有限公司 | A kind of Single chip microcomputer temperature control system |
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| CN206639068U (en) * | 2017-03-30 | 2017-11-14 | 成都优创复材科技有限公司 | A kind of vacuum dryer control system of nano phase change energy storage material |
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| CN203605671U (en) * | 2013-09-02 | 2014-05-21 | 重庆跃腾电器有限公司 | Drying control system |
| CN203518535U (en) * | 2013-10-14 | 2014-04-02 | 叶文明 | Monitoring system for drying cistanche |
| CN205725665U (en) * | 2016-04-22 | 2016-11-23 | 金陵科技学院 | A kind of RF broadband amplifier of gain controllable |
| CN206639068U (en) * | 2017-03-30 | 2017-11-14 | 成都优创复材科技有限公司 | A kind of vacuum dryer control system of nano phase change energy storage material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108803708A (en) * | 2018-02-23 | 2018-11-13 | 深圳市物联微电子有限公司 | A kind of Single chip microcomputer temperature control system |
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| CN106774522B (en) | 2019-01-25 |
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