Intelligent temperature control system and control process of intelligent reactor

Abstract

The invention discloses an intelligent temperature control system and a control flow of an intelligent reactor. According to the technical scheme, the intelligent temperature control system comprises a central processing unit; the temperature monitoring module is connected with the central processing unit through an I2C interface and is used for acquiring real-time temperature inside and outside the chemical reaction kettle so as to transmit an external temperature signal and an internal temperature signal to the central processing unit; and the temperature adjusting module is coupled with the central processing unit through a driving circuit. The small-sized high-power alternating-current relay is connected with the semiconductor chilling plate and the heater, so that the disconnection of the semiconductor chilling plate is kept during the heating operation, and the unstable condition caused by simultaneous heating or refrigeration is avoided; in the signal transmission process, a single-channel output transistor coupler is also arranged in the application, and through a coupling mode, electrical isolation and interference resistance can be realized, and the control precision can be improved.

Description

Technical Field

[0001] The invention relates to chemical experiment control technology, and more specifically, to an intelligent reactor intelligent temperature control system and a control process. Background Art

[0002] At present, in the process of industrial processing and experimental testing, chemical substances need to be added into a reactor for mixed reaction, and the degree of reaction needs to be monitored to prepare the required additives, etc. Referring to the Chinese patent with publication number CN207628423U, a reactor is disclosed, which includes a reactor body, a main stirring head arranged in the reactor body and a motor arranged on the top of the reactor body. The main stirring head connected to the motor is driven to stir and mix the chemical materials in the reactor, and the bottom of the reactor body is fully stirred by means of the first auxiliary stirring head and the second auxiliary stirring head.

[0003] The above solution solves the problems of low mixing efficiency and poor mixing uniformity of chemical substances. However, during the chemical reaction process, chemical materials participating in the chemical reaction will produce heat absorption or heat release. For example, in the reaction mechanism of the neutralization reaction of alkali and acid to generate salt, heat will be released, and different temperatures will also cause changes in the reaction efficiency. During the reaction, in order to ensure the reaction rate, the stability of the substance and the purity of the reactants, the temperature during the reaction needs to be precisely controlled during the reaction. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide an intelligent temperature control system and control process for an intelligent reactor.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: an intelligent temperature control system for an intelligent reactor, applied to the reaction process control of a chemical reactor, comprising a central processing unit, and also comprising: The temperature monitoring module is connected to the central processor via an I2C interface and is used to obtain the real-time temperature inside and outside the chemical reactor to transmit the external temperature signal and the internal temperature signal to the central processor; The temperature regulating module is coupled to the central processor through a driving circuit, and in response to the internal temperature signal and the external temperature signal received by the central processor being higher or lower than a set reference temperature, the temperature regulating module is activated to adjust the temperature inside and outside the reactor; The driving circuit includes a cooling driving circuit, a heating driving circuit and a motor driving circuit, and the cooling driving circuit and the heating driving circuit both include a single-channel output transistor coupler and a transistor switch circuit, and the output end of the transistor switch circuit is connected to the temperature adjustment module; The temperature regulation module includes at least two groups of semiconductor refrigerators and heaters. The output ends of the refrigeration drive circuit and the heating drive circuit are coupled to the semiconductor refrigerators and the heaters via small high-power AC relays. When the small high-power AC relay responds to the drive signal output by the refrigeration drive circuit to maintain the connection between the small high-power AC relay and the semiconductor refrigerator, the connection between the small high-power AC relay and the heater is disconnected.

[0006] By adopting the above technical scheme, in this application, the temperature conditions inside and outside the chemical reactor are monitored by the temperature monitoring module. By controlling the external temperature, the reaction conditions of the chemical substances can be controlled, thereby improving the reaction efficiency. At the same time, the internal temperature is monitored to provide feedback on the reaction degree and progress of the chemical substances. By comparing the internal and external temperature conditions, when the temperature inside the chemical reactor is affected by heat generation or heat absorption during the reaction of the chemical substances, the heater or semiconductor refrigerator can be driven by the heating drive circuit and the cooling drive circuit, thereby ensuring the stability of environmental factors during the reaction and improving the reaction efficiency and purity. At the same time, in this application, a small high-power AC relay is used to connect the semiconductor refrigerator and the heater, so as to keep the semiconductor refrigerator open during the heating operation and avoid instability caused by simultaneous heating or cooling. In the process of signal transmission, a single-channel output transistor coupler is also provided in this application, which can achieve electrical isolation and anti-interference through coupling to improve the control accuracy.

[0007] The present invention is further configured as follows: the input end of the single-channel output transistor coupler is connected to a central processing unit, and receives a low-level digital signal output by the central processing unit to couple a coupling unit in the single-channel output transistor coupler; the transistor switch circuit includes a switch transistor, the base of which is electrically connected to the central processing unit, and responds to a high-level signal output by the central processing unit to turn on the switch transistor; the collector of the switch transistor is connected to a power supply, the emitter of the switch transistor is connected in series with a fixed resistor and then grounded, and the emitter of the switch transistor is connected to a small high-power AC relay as an output end.

[0008] By adopting the above technical scheme, the coupling connection of the single-channel output transistor coupler can realize the mirror signal replication in response to the high-level segment and the low-level segment of the heating pulse signal or the cooling pulse signal, and the existing high-frequency or low-frequency noise signals will be filtered during the coupled transmission, thereby ensuring the stability and accuracy of the heating pulse signal or the cooling pulse signal after transmission, and the working efficiency of the heater and the semiconductor refrigerator can be accurately adjusted. At the same time, the output end is coupled to the transistor switching circuit, and the switching transistor is used as a switching element. By turning on and off the switching transistor, a small high-power AC relay can be controlled to realize the conduction and cutoff of a small current controlling a large current.

[0009] The present invention is further configured as follows: the output end of the single-channel output transistor coupler and the transistor switch circuit are commonly connected to a multi-interface terminal, and the multi-interface terminal is electrically connected to a temperature adjustment module for controlling heating and cooling power supply.

[0010] By adopting the above technical solution and setting up the multi-interface terminal blocks, it is convenient to connect multiple modules when realizing circuit layout and assembly, and the multi-interface terminal blocks can ensure the consistency of power supply current, voltage value and pulse signal in multiple modules.

[0011] The present invention is further configured as follows: the temperature regulating module further comprises a low-side switch circuit and a high-side switch circuit, the low-side switch circuit and the high-side switch circuit are based on an NMOS tube and a PMOS tube respectively, the output end of the single-channel output transistor coupler is connected to the gate of the NMOS tube, the source of the NMOS tube is grounded, the drain of the NMOS tube is connected in series with a plurality of resistors and then connected to the gate of the PMOS tube, and the source of the PMOS tube is connected to the output end of a small high-power AC relay; When the central processing unit responds to a cooling or heating instruction, a cooling pulse signal or a heating pulse signal is output to the single-channel output transistor coupler. The single-channel output transistor coupler responds to the low level segment of the cooling pulse signal or the heating pulse signal to conduct and output a low level, and responds to the high level segment of the cooling pulse signal or the heating pulse signal to output a high level. The cooling pulse signal or heating pulse signal output by the central processing unit is output to the low-side switching circuit via a single-channel output transistor coupler, and a symmetrical pulse signal that is a reverse mirror image of the cooling pulse signal or the heating pulse signal is output to the high-side switching circuit via the low-side switching circuit. The high-side switching circuit responds to a high-level pulse segment to be in a conducting state, and the output end of the high-side switching circuit is electrically connected to the heater or the semiconductor refrigeration sheet.

[0012] By adopting the above technical solution, the NMOS tube and the PMOS tube constitute a low-side switch circuit and a high-side switch circuit, and the low-side switch circuit and the high-side switch circuit are connected to each other, so that two symmetrical pulse signals that are mirror images of each other can be obtained through the same pulse signal, ensuring the same frequency of the signal, and being able to control the switch of the heater or semiconductor cooling plate.

[0013] The present invention is further configured as follows: a unidirectional diode is connected between the source and drain of the NMOS tube and the PMOS tube, the unidirectional diode located in the NMOS tube is used to realize unidirectional conduction of current from the source to the drain, and the unidirectional diode located in the PMOS tube is used to realize unidirectional conduction of current from the drain to the source.

[0014] By adopting the above technical solution, the electrical protection of the NMOS tube and the PMOS tube is realized by means of parallel unidirectional diodes, and the voltage of the potential point at the common connection point of the NMOS tube and the PMOS tube can be controlled through the unidirectional conduction performance.

[0015] The present invention is further configured as follows: the temperature monitoring module also includes a self-calibration analog-to-digital converter and a reference source circuit electrically connected to the self-calibration analog-to-digital converter, pins 3 and 4 of the self-calibration analog-to-digital converter are respectively connected to the central processing unit, the input terminal VIN+ and the input terminal VIN- of the self-calibration analog-to-digital converter are respectively electrically connected to the potential point of the reference source circuit, and are used to obtain a reference potential signal provided by the reference source circuit, and an isolation capacitor is connected in series between the input terminal VIN+ and the input terminal VIN- of the same self-calibration analog-to-digital converter.

[0016] By adopting the above technical solution, with the help of a self-calibration analog-to-digital converter, the same analog signal is provided in the reference source circuit, and the precise processing of the signal is achieved through the self-calibration analog-to-digital converter, thereby improving the accuracy of the data signal transmitted by the I2C port.

[0017] The present invention is further configured as follows: the reference source circuit includes a controllable precision voltage-stabilizing source based on a chip TL431, pin 3 of the chip TL431 is grounded, pin 2 of the chip is connected in series with a pull-up resistor to a power supply, and a capacitor is connected between one end of the pull-up resistor connected to the power supply and the ground, a first voltage-dividing resistor and a second voltage-dividing resistor are connected in series in sequence between pins 2 and 3 of the chip TL431, pin 1 of the chip TL431 is electrically connected to a common pin connected to the first voltage-dividing resistor and the second voltage-dividing resistor, pin 2 of the chip TL431 is connected in series with two pull-down resistors, the common pin of the two pull-down resistors is electrically connected to an input terminal VIN+ of a self-calibration analog-to-digital converter, pin 2 of the chip TL431 is electrically connected to a plurality of calibration resistors with the same resistance value as one of the pull-down resistors, and the ends of the two calibration resistors away from the chip TL431 are respectively connected to the input terminals VIN- of two self-calibration analog-to-digital converters.

[0018] The present invention is further configured to include: a transistor coupler, which is connected to a central processing unit, receives a pulse signal output from the central processing unit for driving a stirring motor, and outputs a PWN-adjustable square wave pulse signal through the transistor coupler to a motor terminal for connecting the stirring motor.

[0019] The present invention is further configured as follows: a control process of an intelligent temperature control system for an intelligent reactor, wherein the control process is as follows: after the intelligent reactor is powered on, the temperature condition inside the chemical reactor is obtained through a temperature monitoring module, and when the temperature inside the reactor meets a preset value, the temperature outside the reactor is monitored to determine whether refrigeration or heating needs to be turned on; When the internal or external temperature of the reactor deviates from the preset value, temperature control is performed: The reactor temperature sensor and the reactor external temperature sensor are connected to the central processor via the I2C interface, and the acquired temperature conditions are transmitted to the central processor via the I2C interface. The acquired temperature conditions are transmitted to the central processor via the self-calibration analog-to-digital converter in the temperature monitoring module. The central processor receives the temperature conditions via the SLC port and the SDA port and compares the data with the set temperature preset value. When the actual temperature condition is lower than the set temperature preset value, the central processor outputs a heating pulse signal. The heating pulse signal is output to the low-side switch circuit via the single-channel output transistor coupler. The low-side switch circuit outputs a symmetrical pulse signal that is a reverse mirror image of the heating pulse signal to the high-side switch circuit. The high-side switch circuit responds to the high-level pulse segment to be in a conducting state. The output end of the high-side switch circuit is connected to the heater. The heating efficiency of the heater is controlled by modulating the pulse frequency output by the heating pulse signal. When the actual temperature is higher than the preset temperature value, the central processing unit outputs a cooling pulse signal, which is output to the low-side switch circuit via a single-channel output transistor coupler, and a symmetrical pulse signal that is a reverse mirror image of the cooling pulse signal is output to the high-side switch circuit via the low-side switch circuit. The high-side switch circuit responds to the high-level pulse segment to be in a conducting state, and the output end of the high-side switch circuit is connected to the heater, and the working efficiency of the semiconductor refrigeration plate is controlled by modulating the pulse frequency output by the cooling pulse signal; When the actual temperature is adjusted to the set temperature preset value, the central processing unit outputs a pulse signal for driving the stirring motor. The pulse signal outputs a PWN-adjustable square wave pulse signal to the motor terminal for connecting the stirring motor through the transistor coupler. The stirring motor starts to stir and mix the chemical solvent in the chemical reactor. When the stirring motor is driven, the temperature monitoring module monitors the temperature inside and outside the chemical reactor at the same time. When the actual temperature deviates from the set temperature preset value, the central processing unit is fed back to modulate the heating pulse signal or the cooling pulse signal.

[0020] The present invention is further configured as follows: when the actual temperature situation deviates from the set temperature preset value, the central processing unit outputs a heating pulse signal or a cooling pulse signal to a single-channel output transistor coupler for signal sorting, and then transmits the heating signal or the cooling signal to a small high-power AC relay through a multi-interface terminal. After the small high-power AC relay receives the heating signal or the cooling signal, it keeps the adjacent cooling signal or heating signal open.

[0021] In summary, the present invention has the following beneficial effects: In the present application, the temperature conditions inside and outside the chemical reactor are monitored by a temperature monitoring module. By controlling the external temperature, the reaction conditions of the chemical substances can be controlled, thereby improving the reaction efficiency. At the same time, the internal temperature is monitored to provide feedback on the reaction degree and progress of the chemical substances. By comparing the internal and external temperature conditions, when the temperature inside the chemical reactor is affected by heat generation or heat absorption during the reaction of the chemical substances, the heater or semiconductor refrigerator can be driven by the heating drive circuit and the cooling drive circuit, thereby ensuring the stability of environmental factors during the reaction and improving the reaction efficiency and purity. At the same time, in the present application, a small high-power AC relay is used to connect the semiconductor refrigerator and the heater to keep the semiconductor refrigerator open during the heating operation to avoid instability caused by simultaneous heating or cooling. In the signal transmission process, a single-channel output transistor coupler is also provided in the present application, which can achieve electrical isolation and anti-interference through coupling to improve the control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 is a system block diagram of the present invention; Figure 2 is a circuit schematic diagram of the central processing unit in the present invention; Figure 3 is a circuit schematic diagram of a self-calibrating analog-to-digital converter in the present invention; Figure 4 is a circuit schematic diagram of the motor drive circuit in the present invention; Figure 5 It is a circuit schematic diagram of the cooling drive circuit and the heating drive circuit in the present invention; Figure 6 This is a circuit diagram of the temperature adjustment module in the present invention; Figure 7 The electrical wiring diagram for the small and medium-sized high-power AC relays in the temperature control module; Figure 8 It is the circuit principle diagram of the alarm module in the present invention; Fig. 9 It is a circuit schematic diagram of the power module in the present invention.

[0024] On the picture: 1. Central processing unit; 2. Temperature monitoring module; 3. Temperature adjustment module; 4. Refrigeration drive circuit; 5. Heating drive circuit; 6. Motor drive circuit; 7. Transistor switch circuit; 8. Low-side switch circuit; 9. High-side switch circuit; 10. Self-calibration analog-to-digital converter; 11. Reference source circuit. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings. Embodiment 1

[0028] like Figure 1 and Figure 2 As shown, an intelligent temperature control system for an intelligent reactor is applied to the reaction process control of a chemical reactor, comprising a central processor 1, and also comprising: The temperature monitoring module 2 is connected to the central processor 1 through an I2C interface and is used to obtain the real-time temperature inside and outside the chemical reactor to transmit the external temperature signal and the internal temperature signal to the central processor 1; The temperature regulating module 3 is coupled to the central processor 1 through a driving circuit, and in response to the internal temperature signal and the external temperature signal received by the central processor 1 being higher or lower than a set reference temperature, the temperature regulating module 3 is activated to adjust the temperature inside and outside the reactor; The driving circuit includes a cooling driving circuit 4, a heating driving circuit 5 and a motor driving circuit 6. The cooling driving circuit 4 and the heating driving circuit 5 both include a single-channel output transistor coupler and a transistor switch circuit 7. The output end of the transistor switch circuit 7 is connected to the temperature adjustment module 3. The temperature adjustment module 3 includes at least two groups of semiconductor refrigeration chips and heaters. The output ends of the refrigeration drive circuit 4 and the heating drive circuit 5 are coupled to the semiconductor refrigeration chips and the heater via a small high-power AC relay. When the small high-power AC relay responds to the drive signal output by the refrigeration drive circuit 4 to maintain the connection between the small high-power AC relay and the semiconductor refrigeration chip, and disconnects the connection between the small high-power AC relay and the heater, and in this embodiment, as Figure 8 As shown, the central processor 1 is also electrically connected to the alarm module, which includes a transistor, an indicator light and a buzzer, so that when the central processor 1 outputs a high-level signal to the transistor, the indicator light and the buzzer complete the work of the alarm, and an ultra-low power timer based on the chip TPL5010DDCR is set, which can maintain the μC in low power mode to save current to the maximum extent, and only wake up at certain time intervals to collect data or provide services for interrupts.

[0029] like Fig. 9 As shown, in this embodiment, a power module is also provided, which is connected to 24V DC power through the power management chip EG1192L, and outputs 5V DC power through the filter capacitor, filter inductor and voltage regulator diode D2.

[0030] like Figure 5 As shown, the input end of the single-channel output transistor coupler is connected to the central processor 1, and the low-level digital signal output by the central processor 1 is received to couple the coupling unit in the single-channel output transistor coupler. The transistor switch circuit 7 includes a switch transistor, the base of the switch transistor is electrically connected to the central processor 1, and responds to the high-level signal output by the central processor 1 to turn on the switch transistor. The collector of the switch transistor is connected to the power supply, the emitter of the switch transistor is connected in series with a fixed resistor and then grounded, and the emitter of the switch transistor is connected to a small high-power AC relay as an output end. The output end of the single-channel output transistor coupler and the transistor switch circuit 7 are commonly connected to a multi-interface terminal, and the multi-interface terminal is electrically connected to the temperature adjustment module 3 for heating and cooling power control.

[0031] like Figure 2As shown, in this embodiment, the central processing unit 1 is based on the STM32 series of single-chip microcomputers, and specifically selects the STM32F103 chip. The PB port of the STM32F103 chip is connected in series with the temperature sensor as a serial interface of the I2C structure, and in this embodiment, at least two groups of temperature sensors are arranged, which are respectively arranged inside the chemical reactor and outside the chemical reactor; and the PD port of the STM32F103 chip is defined as the control port of the stirring motor, and the start and stop control of the stirring motor is realized by electrically connecting the motor drive circuit 6. The PC port of the STM32F103 chip is used as the control port for temperature control, and is connected to the heater and the semiconductor refrigeration sheet through the heating drive circuit 5 and the cooling drive circuit 4, respectively.

[0032] like Figure 6 , Figure 7 As shown, the temperature adjustment module 3 also includes a low-side switch circuit 8 and a high-side switch circuit 9, the low-side switch circuit 8 and the high-side switch circuit 9 are based on an NMOS tube and a PMOS tube respectively, the output end of the single-channel output transistor coupler is connected to the gate of the NMOS tube, the source of the NMOS tube is grounded, the drain of the NMOS tube is connected in series with a number of resistors and then connected to the gate of the PMOS tube, the source of the PMOS tube is connected to the output end of a small high-power AC relay, wherein a unidirectional diode is connected between the source and drain of the NMOS tube and the PMOS tube, the unidirectional diode located in the NMOS tube is used to realize unidirectional conduction of current from the source to the drain, and the unidirectional diode located in the PMOS tube is used to realize unidirectional conduction of current from the drain to the source; When the central processor 1 responds to a cooling or heating instruction, it outputs a cooling pulse signal or a heating pulse signal to the single-channel output transistor coupler, and the single-channel output transistor coupler responds to the low level segment of the cooling pulse signal or the heating pulse signal to conduct and output a low level, and responds to the high level segment of the cooling pulse signal or the heating pulse signal to output a high level; The cooling pulse signal or heating pulse signal output by the central processing unit 1 is output to the low-side switch circuit 8 through a single-channel output transistor coupler, and a symmetrical pulse signal that is a reverse mirror image of the cooling pulse signal or the heating pulse signal is output to the high-side switch circuit 9 through the low-side switch circuit 8. The high-side switch circuit 9 responds to the high-level pulse segment to be in a conductive state, and the output end of the high-side switch circuit 9 is electrically connected to the heater or the semiconductor refrigeration sheet.

[0033] like Figure 3As shown, the temperature monitoring module 2 also includes a self-calibration analog-to-digital converter 10 and a reference source circuit 11 electrically connected to the self-calibration analog-to-digital converter 10. Pins 3 and 4 of the self-calibration analog-to-digital converter 10 are respectively connected to the central processing unit 1. The input terminal VIN+ and the input terminal VIN- of the self-calibration analog-to-digital converter 10 are respectively electrically connected to the potential point of the reference source circuit 11 for obtaining the reference potential signal provided by the reference source circuit 11. An isolation capacitor is connected in series between the input terminal VIN+ and the input terminal VIN- of the same self-calibration analog-to-digital converter 10.

[0034] like Figure 3 As shown, the reference source circuit 11 includes a controllable precision voltage-stabilizing source based on the chip TL431, the 3rd pin of the chip TL431 is grounded, the 2nd pin of the chip is connected in series with a pull-up resistor to the power supply, and a capacitor is connected between one end of the pull-up resistor connected to the power supply and the ground, the first voltage-dividing resistor and the second voltage-dividing resistor are connected in series between the 2nd and 3rd pins of the chip TL431 in sequence, the 1st pin of the chip TL431 is electrically connected to the common pin connected to the first voltage-dividing resistor and the second voltage-dividing resistor, the 2nd pin of the chip TL431 is connected in series with two pull-down resistors, the common pin of the two pull-down resistors is electrically connected to the input terminal VIN+ of the self-calibration analog-to-digital converter 10, the 2nd pin of the chip TL431 is electrically connected to a plurality of calibration resistors with the same resistance as one of the pull-down resistors, and the ends of the two calibration resistors away from the chip TL431 are respectively connected to the input terminals VIN- of the two self-calibration analog-to-digital converters 10.

[0035] like Figure 4 As shown, it also includes a transistor coupler, which is connected to the central processing unit 1 and receives a pulse signal output from the central processing unit 1 for driving the stirring motor. The pulse signal outputs a PWN-adjustable square wave pulse signal through the transistor coupler to the motor terminal for connecting the stirring motor. Embodiment 2

[0036] The control process of the intelligent temperature control system of the intelligent reactor is applied to the operation process control of the intelligent temperature control system of the intelligent reactor. The control process is as follows: after the intelligent reactor is powered on, the temperature condition inside the chemical reactor is obtained through the temperature monitoring module 2. When the temperature inside the reactor meets the preset value, the temperature outside the reactor is monitored to determine whether refrigeration or heating needs to be turned on; When the internal or external temperature of the reactor deviates from the preset value, temperature control is performed: The reactor temperature sensor and the reactor external temperature sensor are connected to the central processor 1 via the I2C interface, and the acquired temperature conditions are transmitted to the central processor 1 via the I2C interface. The acquired temperature conditions are transmitted to the central processor 1 via the self-calibration analog-to-digital converter 10 in the temperature monitoring module 2. The central processor 1 receives the temperature conditions via the SLC port and the SDA port and compares the data with the set temperature preset value. When the actual temperature condition is lower than the set temperature preset value, the central processor 1 outputs a heating pulse signal, and the heating pulse signal is output to the low-side switch circuit 8 via the single-channel output transistor coupler. A symmetrical pulse signal with a reverse mirror image of the heating pulse signal is output to the high-side switch circuit 9 via the low-side switch circuit 8. The high-side switch circuit 9 responds to the high-level pulse segment to be in a conducting state. The output end of the high-side switch circuit 9 is connected to the heater, and the heating efficiency of the heater is controlled by modulating the pulse frequency output by the heating pulse signal. When the actual temperature is higher than the preset temperature value, the central processor 1 outputs a cooling pulse signal, and the cooling pulse signal is output to the low-side switch circuit 8 through the single-channel output transistor coupler, and a symmetrical pulse signal that is a reverse mirror image of the cooling pulse signal is output to the high-side switch circuit 9 through the low-side switch circuit 8. The high-side switch circuit 9 responds to the high-level pulse segment to be in a conducting state, and the output end of the high-side switch circuit 9 is connected to the heater, and the working efficiency of the semiconductor refrigeration plate is controlled by modulating the pulse frequency output by the cooling pulse signal; When the actual temperature is adjusted to the set temperature preset value, the central processing unit 1 outputs a pulse signal for driving the stirring motor. The pulse signal outputs a PWN-adjustable square wave pulse signal to the motor terminal for connecting the stirring motor through the transistor coupler. The stirring motor starts to stir and mix the chemical solvent in the chemical reactor. When the stirring motor is driven, the temperature monitoring module 2 monitors the temperature inside and outside the chemical reactor at the same time. When the actual temperature deviates from the set temperature preset value, the central processing unit 1 is fed back to modulate the heating pulse signal or the cooling pulse signal.

[0037] When the actual temperature deviates from the set temperature preset value, the central processor 1 outputs a heating pulse signal or a cooling pulse signal to the single-channel output transistor coupler for signal sorting, and then transmits the heating signal or the cooling signal to the small high-power AC relay through the multi-interface terminal. After the small high-power AC relay receives the heating signal or the cooling signal, it keeps the adjacent cooling signal or heating signal open.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent temperature control system for an intelligent reactor, applied to the reaction process control of a chemical reactor, characterized in that: The invention comprises a central processing unit (1), and further comprises: The temperature monitoring module (2) is connected to the central processor (1) via an I2C interface and is used to obtain the real-time temperature inside and outside the chemical reactor to transmit the external temperature signal and the internal temperature signal to the central processor (1); A temperature regulating module (3) is coupled to the central processor (1) via a driving circuit, and in response to the internal temperature signal and the external temperature signal received by the central processor (1) being higher or lower than a set reference temperature, the temperature regulating module (3) is activated to adjust the temperature inside and outside the reactor; The drive circuit comprises a cooling drive circuit (4), a heating drive circuit (5) and a motor drive circuit (6); the cooling drive circuit (4) and the heating drive circuit (5) both comprise a single-channel output transistor coupler and a transistor switch circuit (7); the output end of the transistor switch circuit (7) is connected to the temperature adjustment module (3); The temperature regulating module (3) comprises at least two groups of semiconductor cooling sheets and heaters. The output ends of the cooling drive circuit (4) and the heating drive circuit (5) are coupled to the semiconductor cooling sheets and the heater via a small high-power AC relay. When the small high-power AC relay responds to the drive signal output by the cooling drive circuit (4) to maintain the connection between the small high-power AC relay and the semiconductor cooling sheet, the connection between the small high-power AC relay and the heater is disconnected.

2. The intelligent temperature control system for an intelligent reactor according to claim 1, characterized in that: The input end of the single-channel output transistor coupler is connected to the central processor (1), and receives a low-level digital signal output by the central processor (1) to couple a coupling unit in the single-channel output transistor coupler. The transistor switch circuit (7) comprises a switch transistor, the base of which is electrically connected to the central processor (1), and responds to a high-level signal output by the central processor (1) to turn on the switch transistor. The collector of the switch transistor is connected to a power supply, the emitter of the switch transistor is connected in series with a fixed resistor and then grounded, and the emitter of the switch transistor is connected to a small high-power AC relay as an output end.

3. The intelligent temperature control system for an intelligent reactor according to claim 2, characterized in that: The output ends of the single-channel output transistor coupler and the transistor switch circuit (7) are commonly connected to a multi-interface wiring terminal, and the multi-interface wiring terminal is electrically connected to the temperature adjustment module (3) for controlling the heating and cooling power supply.

4. The intelligent temperature control system for an intelligent reactor according to claim 2, characterized in that: The temperature regulating module (3) further comprises a low-side switch circuit (8) and a high-side switch circuit (9), wherein the low-side switch circuit (8) and the high-side switch circuit (9) are based on an NMOS tube and a PMOS tube respectively, the output end of the single-channel output transistor coupler is connected to the gate of the NMOS tube, the source of the NMOS tube is grounded, the drain of the NMOS tube is connected in series with a plurality of resistors and then connected to the gate of the PMOS tube, and the source of the PMOS tube is connected to the output end of a small high-power AC relay; When the central processor (1) responds to a cooling or heating instruction, it outputs a cooling pulse signal or a heating pulse signal to the single-channel output transistor coupler, and the single-channel output transistor coupler responds to the low level segment of the cooling pulse signal or the heating pulse signal to conduct and output a low level, and responds to the high level segment of the cooling pulse signal or the heating pulse signal to output a high level; The cooling pulse signal or heating pulse signal output by the central processing unit (1) is output to a low-side switch circuit (8) via a single-channel output transistor coupler, and a symmetrical pulse signal that is a reverse mirror image of the cooling pulse signal or the heating pulse signal is output to a high-side switch circuit (9) via the low-side switch circuit (8). The high-side switch circuit (9) responds to a high-level pulse segment to be in a conducting state, and the output end of the high-side switch circuit (9) is electrically connected to a heater or a semiconductor cooling plate.

5. The intelligent temperature control system for an intelligent reactor according to claim 4, characterized in that: A unidirectional diode is connected between the source and drain of the NMOS tube and the PMOS tube. The unidirectional diode located in the NMOS tube is used to realize unidirectional conduction of current from the source to the drain, and the unidirectional diode located in the PMOS tube is used to realize unidirectional conduction of current from the drain to the source.

6. The intelligent temperature control system for an intelligent reactor according to claim 1, characterized in that: The temperature monitoring module (2) further comprises a self-calibration analog-to-digital converter (10) and a reference source circuit (11) electrically connected to the self-calibration analog-to-digital converter (10); pins 3 and 4 of the self-calibration analog-to-digital converter (10) are respectively connected to the central processing unit (1); an input terminal VIN+ and an input terminal VIN- of the self-calibration analog-to-digital converter (10) are respectively electrically connected to a potential point of the reference source circuit (11) for obtaining a reference potential signal provided by the reference source circuit (11); and an isolation capacitor is connected in series between the input terminal VIN+ and the input terminal VIN- of the same self-calibration analog-to-digital converter (10).

7. The intelligent temperature control system for an intelligent reactor according to claim 6, characterized in that: The reference source circuit (11) comprises a controllable precision voltage stabilizing source based on a chip TL431, wherein the 3rd pin of the chip TL431 is grounded, the 2nd pin of the chip is connected in series with a pull-up resistor to a power source, and a capacitor is connected between one end of the pull-up resistor connected to the power source and the ground, a first voltage-dividing resistor and a second voltage-dividing resistor are connected in series in sequence between the 2nd and 3rd pins of the chip TL431, the 1st pin of the chip TL431 is electrically connected to a common pin connecting the first voltage-dividing resistor and the second voltage-dividing resistor, the 2nd pin of the chip TL431 is connected in series with two pull-down resistors, the common pins of the two pull-down resistors are electrically connected to an input terminal VIN+ of a self-calibration analog-to-digital converter (10), the 2nd pin of the chip TL431 is electrically connected to a plurality of calibration resistors having the same resistance value as one of the pull-down resistors, and the ends of the two calibration resistors away from the chip TL431 are respectively connected to the input terminals VIN- of two self-calibration analog-to-digital converters (10).

8. The intelligent temperature control system for an intelligent reactor according to claim 1, characterized in that: It also includes a transistor coupler, which is connected to the central processor (1) and receives a pulse signal output from the central processor (1) for driving the stirring motor. The pulse signal is output as a square wave pulse signal with adjustable PWN via the transistor coupler to a motor terminal for connecting the stirring motor.

9. The control process of the intelligent temperature control system of the intelligent reactor is applied to the operation process control of the intelligent temperature control system of the intelligent reactor according to any one of claims 1 to 8, characterized in that: The control process is as follows: after the intelligent reactor is powered on, the temperature condition inside the chemical reactor is obtained through the temperature monitoring module (2). When the temperature inside the reactor meets the preset value, the temperature outside the reactor is monitored to determine whether refrigeration or heating needs to be turned on; When the internal or external temperature of the reactor deviates from the preset value, temperature control is performed: The reactor temperature sensor and the reactor external temperature sensor are connected to the central processor (1) via an I2C interface, and the acquired temperature conditions are transmitted to the central processor (1) via the I2C interface. The acquired temperature conditions are transmitted to the central processor (1) via a self-calibration analog-to-digital converter (10) in a temperature monitoring module (2). The central processor (1) receives the temperature conditions via an SLC port and an SDA port and compares the data with a set temperature preset value. When the actual temperature condition is lower than the set temperature preset value, the central processor (1) outputs a heating pulse signal. The heating pulse signal is output to a low-side switch circuit (8) via a single-channel output transistor coupler. A symmetrical pulse signal that is a reverse mirror image of the heating pulse signal is output to a high-side switch circuit (9) via the low-side switch circuit (8). The high-side switch circuit (9) responds to a high-level pulse segment to be in a conducting state. The output end of the high-side switch circuit (9) is connected to a heater. The heating efficiency of the heater is controlled by modulating the pulse frequency output by the heating pulse signal. When the actual temperature is higher than the preset temperature value, the central processor (1) outputs a cooling pulse signal, which is output to the low-side switch circuit (8) via a single-channel output transistor coupler, and outputs a symmetrical pulse signal which is a reverse mirror image of the cooling pulse signal to the high-side switch circuit (9) via the low-side switch circuit (8). The high-side switch circuit (9) responds to the high-level pulse segment to be in a conducting state, and the output end of the high-side switch circuit (9) is connected to the heater, and the working efficiency of the semiconductor refrigeration plate is controlled by modulating the pulse frequency output by the cooling pulse signal; When the actual temperature is adjusted to the set temperature preset value, the central processor (1) outputs a pulse signal for driving the stirring motor. The pulse signal outputs a PWN adjustable square wave pulse signal to the motor terminal for connecting the stirring motor through the transistor coupler. The stirring motor starts to stir and mix the chemical solvent in the chemical reactor. When the stirring motor is driven, the temperature monitoring module (2) monitors the temperature inside and outside the chemical reactor at the same time. When the actual temperature deviates from the set temperature preset value, the central processor (1) is fed back to modulate the heating pulse signal or the cooling pulse signal.

10. The control process of the intelligent temperature control system for an intelligent reactor according to claim 9 is characterized in that: When the actual temperature situation deviates from the set temperature preset value, the central processing unit (1) outputs a heating pulse signal or a cooling pulse signal to a single-channel output transistor coupler for signal sorting, and then transmits the heating signal or the cooling signal to a small high-power AC relay via a multi-interface terminal. After the small high-power AC relay receives the heating signal or the cooling signal, it keeps the adjacent cooling signal or heating signal open.

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