An intelligent thermostat control system

Abstract

The utility model discloses a kind of intelligent constant temperature control systems, including microcontroller U1, temperature collector P2, heating module and refrigeration module, microcontroller U1 is respectively connected with temperature collector P2, heating module and refrigeration module electricity, microcontroller U1 is built-in incremental PID algorithm.Real-time temperature is collected by temperature collector P2, and the incremental PID algorithm of microcontroller U1 is according to real-time temperature and set temperature calculation control quantity, and according to control quantity production PWM signal is sent to heating module or refrigeration module, and heating module or refrigeration module is according to PWM signal switching operating state, until real-time temperature and preset temperature value are equal.By using incremental PID algorithm, control quantity is accurately calculated, to realize the high-precision regulation of temperature.By setting refrigeration module, the intelligent constant temperature control system is suitable for refrigeration scene, effectively widen the use scene of intelligent constant temperature control system.

Description

Technical Field

[0001] This utility model relates to the field of constant temperature control system technology, specifically to an intelligent constant temperature control system. Background Technology

[0002] Intelligent temperature control systems are widely used in devices requiring precise temperature control in homes, industries, and medical settings, such as electric kettles, incubators, and greenhouses. Existing intelligent temperature control systems typically fall into two categories: one uses a potentiometer to set a temperature threshold and employs analog circuitry to control the heater; the other uses a traditional PID (Proportional-Integral-Derivative) algorithm to adjust the heater's output power, thereby achieving temperature control.

[0003] However, these two control methods are difficult to achieve high-precision control in nonlinear systems, resulting in large temperature errors. Furthermore, traditional PID control algorithms are complex and highly sensitive to external disturbances, leading to poor stability of the intelligent temperature control system. In addition, existing intelligent temperature control systems can only heat and not cool, limiting their applicability. Utility Model Content

[0004] To address the shortcomings of existing technologies, an intelligent constant temperature control system is provided.

[0005] To achieve the above objectives, this utility model provides an intelligent constant temperature control system, including a microcontroller U1, a temperature acquisition device P2, a heating module, and a cooling module. The microcontroller U1 is electrically connected to the temperature acquisition device P2, the heating module, and the cooling module, respectively. The microcontroller U1 has a built-in incremental PID algorithm.

[0006] According to one embodiment of the present invention, microcontroller U1 has a first pin to a fortieth pin, temperature acquisition device P2 has a first pin to a third pin, the first pin of temperature acquisition device P2 is connected to the nineteenth pin of microcontroller U1, the second pin of temperature acquisition device P2 is connected to the seventeenth pin of microcontroller U1, and the third pin of temperature acquisition device P2 is connected to the twentieth pin of microcontroller U1; heating module has a first pin and a second pin, the first pin of heating module is connected to the thirty-ninth pin of microcontroller U1, and the second pin of heating module is connected to the thirty-sixth pin of microcontroller U1; cooling module has a first pin and a second pin, the first pin of cooling module is connected to the thirty-ninth pin of microcontroller U1, and the second pin of cooling module is connected to the thirty-fifth pin of microcontroller U1.

[0007] According to one embodiment of the present invention, a manual control module is also included. The manual control module includes a first control switch, a second control switch, and a third control switch. The second pin of the first control switch is connected to the first pin of the microcontroller U1. The third pin of the first control switch is connected to the third pin of the second control switch, the third pin of the third control switch, and the nineteenth pin of the microcontroller U1, respectively. The second pin of the second control switch is connected to the second pin of the microcontroller U1, and the third pin of the third control switch is connected to the third pin of the microcontroller U1.

[0008] According to one embodiment of the present invention, a display is also included. The display has a first pin to a sixteenth pin. The first pin and the sixteenth pin of the display are connected to the nineteenth pin of the microcontroller U1. The second pin of the display is connected to the eighteenth pin of the microcontroller U1. The fourth pin of the display is connected to the fifth pin of the microcontroller U1. The sixth pin of the display is connected to the ninth pin of the microcontroller U1. The eleventh pin of the display is connected to the sixteenth pin of the microcontroller U1. The twelfth pin of the display is connected to the thirteenth pin of the microcontroller U1. The thirteenth pin of the display is connected to the fourteenth pin of the microcontroller U1. The fourteenth pin of the display is connected to the fifteenth pin of the microcontroller U1. The fifteenth pin of the display is connected to the eighteenth pin of the microcontroller U1.

[0009] According to one embodiment of the present invention, it further includes a WIFI module, which has a GND terminal, a D7 terminal and a D6 terminal. The GND terminal of the WIFI module is connected to the 40th pin of the microcontroller U1, the D7 terminal of the WIFI module is connected to the 28th pin of the microcontroller U1, and the D6 terminal of the WIFI module is connected to the 27th pin of the microcontroller U1.

[0010] According to one embodiment of the present invention, it further includes a voice module, which includes a connector J1 and a voice chip. The connector J1 has a first pin to a fourth pin. The first pin of the connector J1 is connected to the twentieth pin of the microcontroller U1, the second pin of the connector J1 is connected to the sixth pin of the microcontroller U1, the third pin of the connector J1 is connected to the seventh pin of the microcontroller U1, the fourth pin of the connector J1 is connected to the nineteenth pin of the microcontroller U1, and the voice chip is electrically connected to the connector J1.

[0011] According to one embodiment of the present invention, the heating module includes a first connector and a heating rod. The first connector has a first pin and a second pin. The first pin of the first connector is connected to the thirty-ninth pin of the microcontroller U1, and the second pin of the first connector is connected to the thirty-sixth pin of the microcontroller U1. The heating rod is electrically connected to the first connector.

[0012] According to one embodiment of the present invention, the refrigeration module includes a second connector and a cooler. The second connector has a first pin and a second pin. The first pin of the second connector is connected to the thirty-ninth pin of the microcontroller U1, and the second pin of the second connector is connected to the thirty-fifth pin of the microcontroller U1. The cooler is electrically connected to the second connector.

[0013] According to one embodiment of the present invention, it further includes a storage module, which is electrically connected to the microcontroller U1.

[0014] The beneficial effects of this invention are as follows: the microcontroller U1 is electrically connected to the temperature acquisition unit P2, the heating module, and the cooling module. The microcontroller U1 is equipped with an incremental PID algorithm. Real-time temperature is acquired through the temperature acquisition unit P2, and the incremental PID algorithm of the microcontroller U1 calculates the control quantity based on the real-time temperature and the set temperature. It then generates a PWM signal based on the control quantity and sends it to the heating module or cooling module. The heating module or cooling module switches its operating state according to the PWM signal until the real-time temperature equals the preset temperature value. By employing the incremental PID algorithm, the control quantity is accurately calculated to achieve high-precision temperature regulation. The inclusion of a cooling module makes the intelligent constant temperature control system suitable for refrigeration scenarios, effectively broadening the application scenarios of the intelligent constant temperature control system. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 This is a schematic diagram of the intelligent constant temperature control system in the embodiment.

[0017] Explanation of reference numerals in the attached figures

[0018] 1. Heating module; 11. First connector; 2. Cooling module; 21. Second connector; 3. Manual control module; 31. First control switch; 32. Second control switch; 33. Third control switch; 4. Display; 5. WIFI module; 6. Voice module. Detailed Implementation

[0019] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0020] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] Please refer to Figure 1 , Figure 1 This is a schematic diagram of an intelligent constant temperature control system. This embodiment provides an intelligent constant temperature control system, which includes a microcontroller U1, a temperature acquisition device P2, a heating module 1, and a cooling module 2. The microcontroller U1 is electrically connected to the temperature acquisition device P2, the heating module 1, and the cooling module 2, and the microcontroller U1 has a built-in incremental PID algorithm. In this example, the microcontroller U1 is an STM32 microcontroller, and the temperature acquisition device P2 is a DS18820 temperature sensor.

[0022] In actual use, the user inputs a set temperature into the microcontroller U1. The temperature acquisition unit P2 collects ambient temperature data in real time and sends the collected data back to the microcontroller U1. The microcontroller U1 has a built-in incremental PID algorithm. After receiving the ambient temperature data from the temperature acquisition unit P2, the microcontroller U1's built-in incremental PID algorithm calculates the temperature control value based on the current ambient temperature data and the set temperature. Then, the microcontroller U1 generates a PWM signal based on the temperature control value and sends the PWM signal to either the heating module 1 or the cooling module 2. When the heating module 1 receives the PWM signal, it switches its operating state according to the PWM signal to heat the environment until the ambient temperature data collected by the temperature acquisition unit P2 equals the user-set temperature value. When the cooling module 2 receives the PWM signal, the heating module 1 switches its operating state according to the PWM signal to cool the environment until the ambient temperature data collected by the temperature acquisition unit P2 equals the user-set temperature value.

[0023] It should be noted that the incremental PID algorithm is an existing algorithm, an improved method based on the proportional-integral-derivative (PID) control algorithm, designed to improve the system's response speed, stability, and anti-interference capability. The incremental PID algorithm is characterized by processing the accumulated error signal to achieve more precise adjustment of the system output, thus enabling high-precision temperature control. Furthermore, compared to traditional PID control, the incremental PID control algorithm requires significantly less computation, effectively improving the stability of the intelligent temperature control circuit. Additionally, this embodiment, by including the refrigeration module 2, makes the intelligent temperature control system applicable to refrigeration scenarios, effectively broadening the application scenarios of the intelligent temperature control circuit.

[0024] Furthermore, microcontroller U1 has pins 1 through 40, and temperature sensor P2 has pins 1 through 3. Heating module 1 has pins 1 and 2. During connection, pin 1 of temperature sensor P2 is connected to pin 19 of microcontroller U1, pin 2 of temperature sensor P2 is connected to pin 17 of microcontroller U1, and pin 3 of temperature sensor P2 is connected to pin 20 of microcontroller U1. Pin 1 of heating module 1 is connected to pin 39 of microcontroller U1, and pin 2 of heating module 1 is connected to pin 36 of microcontroller U1. Cooling module 2 has pins 1 and 2; pin 1 of cooling module 2 is connected to pin 39 of microcontroller U1, and pin 2 of cooling module 2 is connected to pin 35 of microcontroller U1.

[0025] In this example, pin 19 of microcontroller U1 is the GND pin, and pin 17 is pin PB9, which is a general-purpose GPIO port used for data transmission. Pin 20 of microcontroller U1 is the 3V3 pin, which is used to output a 3.3V voltage. Pin 39 of microcontroller U1 is the GND pin, and pin 36 is pin PB11, which is a general-purpose GPIO port used for data transmission.

[0026] Furthermore, the heating module 1 includes a first connector 11 and a heating rod (not shown in the figure). The first connector 11 has a first pin and a second pin. The first pin of the first connector 11 is connected to the thirty-ninth pin of the microcontroller U1, and the second pin of the first connector 11 is connected to the thirty-sixth pin of the microcontroller U1. The heating rod is connected to the first connector 11, so that the heating rod is electrically connected to the microcontroller U1.

[0027] The cooling module 2 includes a second connector 21 and a cooler. The second connector 21 has a first pin and a second pin. The first pin of the second connector 21 is connected to the thirty-ninth pin of the microcontroller U1, and the second pin of the second connector 21 is connected to the thirty-fifth pin of the microcontroller U1. The cooler is electrically connected to the microcontroller U1 through the second connector 21.

[0028] The intelligent constant temperature control system also includes a manual control module 3, which comprises a first control switch 31, a second control switch 32, and a third control switch 33. Each of these switches has a first to a fourth pin. The second pin of the first control switch 31 is connected to the first pin of the microcontroller U1, and the third pin of the first control switch 31 is connected to the third pins of the second control switch 32, the third control switch 33, and the nineteenth pin of the microcontroller U1. The second pin of the second control switch 32 is connected to the second pin of the microcontroller U1, and the third pin of the third control switch 33 is connected to the third pin of the microcontroller U1.

[0029] In this example, the first control switch 31 is set as the "Adjust Temperature +" control key, the second control switch 32 is set as the "Adjust Temperature -" control key, and the third control switch 33 is set as the "Heating / Cooling Switch" control key. When the first control switch 31 is pressed, the set temperature is increased; when the second control switch 32 is pressed, the set temperature is decreased; when the third control switch 33 is pressed and closed, the intelligent constant temperature control system switches to cooling mode; when the third control switch 33 is opened, the intelligent constant temperature control system switches to heating mode. It should be noted that in another embodiment, the third control switch 33 can also be set to cooling mode when closed and heating mode when open. By setting manual control switches, users can easily input the set temperature into the microcontroller U1 according to actual usage needs, and switch between cooling and heating modes.

[0030] Furthermore, the intelligent constant temperature control system also includes a display 4, which is electrically connected to the microcontroller U1. The display 4 is used to display the current temperature data and set data. In this example, the display 4 uses an LCD1602 display screen. The display 4 has pins 1 through 16. Pins 1 and 16 of the display 4 are connected to pin 19 of the microcontroller U1. Pin 2 of the display 4 is connected to pin 18 of the microcontroller U1. Pin 4 of the display 4 is connected to pin 5 of the microcontroller U1, and pin 6 of the display 4 is connected to pin 9 of the microcontroller U1. Pin 11 of the display 4 is connected to pin 16 of the microcontroller U1, pin 12 of the display 4 is connected to pin 13 of the microcontroller U1, pin 13 of the display 4 is connected to pin 14 of the microcontroller U1, pin 14 of the display 4 is connected to pin 15 of the microcontroller U1, and pin 15 of the display 4 is connected to pin 18 of the microcontroller U1. Pin 19 of the microcontroller U1 is a GND interface, and pin 18 is a 5V interface, providing a 5V power supply voltage to the display 4. Pins 5, 9, 16, 13, 14, and 15 of the microcontroller U1 are all general-purpose GPIP interfaces used for data transmission.

[0031] Furthermore, the intelligent constant temperature control system also includes a WIFI module 5, which has a GND terminal, a D7 terminal, and a D6 terminal. The GND terminal of the WIFI module 5 is connected to pin 40 of the microcontroller U1, the D7 terminal is connected to pin 28 of the microcontroller U1, and the D6 terminal is connected to pin 27 of the microcontroller U1. Pin 40 of the microcontroller U1 is the GND interface, while pins 28 and 27 are general-purpose GPIO interfaces used to enable data transmission between the WIFI module 5 and the microcontroller U1.

[0032] The WIFI module 5 is used to enable wireless communication between the intelligent temperature control system and the user's mobile phone. In this example, the WIFI module 5 is an ESP8266 WIFI module. In practical applications, the WIFI module 5 communicates with the user's mobile phone to allow the user to control the intelligent temperature control system via an app. Furthermore, the microcontroller U1 sends temperature data to the user's mobile app in real time via the WIFI module 5, allowing the user to view the temperature data in real time.

[0033] The intelligent constant temperature control system also includes a voice module 6, which comprises a connector J1 and a voice chip (not shown in the figure). Connector J1 has pins one through four. Pin one of connector J1 is connected to pin twentieth of microcontroller U1, pin two of connector J1 is connected to pin six of microcontroller U1, pin three of connector J1 is connected to pin seven of microcontroller U1, and pin four of connector J1 is connected to pin nineteen of microcontroller U1. The voice chip is electrically connected to connector J1 and, through connector J1, to microcontroller U1. Pins six and seven of microcontroller U1 are general-purpose GPIO interfaces for data transmission. Pin nineteen of microcontroller U1 is a GND interface for grounding. Pin twentieth of microcontroller U1 is a 3.3V interface for outputting 3.3V to power the voice module 6. In this example, the voice chip is a SYN6288 voice module. In actual use, when the temperature reaches the preset temperature value, the microcontroller U1 controls the voice module 6 to announce the current temperature to remind the user.

[0034] Furthermore, the intelligent constant temperature control system also includes a storage module 7, which is electrically connected to the microcontroller U1. The storage module is used to store data. Since the microcontroller U1 itself has limited memory, the storage module is added to increase the memory capacity. In this embodiment, the storage module 7 uses an AT24C6 memory chip, which has pins one through four. During connection, the first pin of the storage module 7 is connected to pin thirty-eight of the microcontroller U1, the second pin of the storage module 7 is connected to pin thirty-nine of the microcontroller U1, the third pin of the storage module 7 is connected to pin twenty-three of the microcontroller U1, and the fourth pin of the storage module 7 is connected to pin twenty-two of the microcontroller U1. Pin thirty-nine of the microcontroller U1 is a GND interface, and its thirty-eighth pin is a 3V3 interface. Pins twenty-two and twenty-three of the microcontroller U1 are both general-purpose GPIO interfaces.

[0035] In summary, the microcontroller U1 is electrically connected to the temperature acquisition unit P2, the heating module 1, and the cooling module 2. The microcontroller U1 incorporates an incremental PID algorithm. It acquires real-time temperature data via the temperature acquisition unit P2, and its incremental PID algorithm calculates the control input based on the real-time temperature and the set temperature. It then generates a PWM signal based on this control input and sends it to either the heating module 1 or the cooling module 2. The heating module 1 or cooling module 2 switches its operating state according to the PWM signal until the real-time temperature equals the set temperature value. By employing the incremental PID algorithm, the control input is precisely calculated, achieving high-precision temperature regulation. The inclusion of the cooling module 2 makes the intelligent constant temperature control system suitable for refrigeration scenarios, effectively broadening its application scope.

[0036] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An intelligent constant temperature control system, characterized in that, include: The microcontroller U1, temperature acquisition device P2, heating module (1) and cooling module (2) are respectively electrically connected to the temperature acquisition device P2, the heating module (1) and the cooling module (2); The microcontroller U1 has an built-in incremental PID algorithm, which is used to calculate the temperature control quantity based on the difference between the current ambient temperature and the set temperature, and generate PWM signals to control the switching state of the heating module (1) or the cooling module (2) respectively. The microcontroller U1 has a first pin to a fortieth pin, and the temperature sensor P2 has a first pin to a third pin. The first pin of the temperature sensor P2 is connected to the nineteenth pin of the microcontroller U1, the second pin of the temperature sensor P2 is connected to the seventeenth pin of the microcontroller U1, and the third pin of the temperature sensor P2 is connected to the twentieth pin of the microcontroller U1. The heating module (1) includes a first connector (11) and a heating rod. The heating module (1) has a first pin and a second pin. The first pin of the heating module (1) is connected to the thirty-ninth pin of the microcontroller U1 through the first connector (11), and the second pin of the heating module (1) is connected to the thirty-sixth pin of the microcontroller U1. The refrigeration module (2) includes a second connector (21) and a cooler. The refrigeration module (2) has a first pin and a second pin. The first pin of the refrigeration module (2) is connected to the thirty-ninth pin of the microcontroller U1 through the second connector (21), and the second pin of the refrigeration module (2) is connected to the thirty-fifth pin of the microcontroller U1. The heating module (1) and the cooling module (2) switch working states under the control of the incremental PID algorithm, and the PWM signal output by the incremental PID algorithm drives the heating module (1) or the cooling module (2) to heat up or cool down until the current ambient temperature is equal to the set temperature.

2. The intelligent constant temperature control system according to claim 1, characterized in that, The first pin of the heating module (1) is connected to the thirty-ninth pin of the microcontroller U1, and the second pin of the heating module (1) is connected to the thirty-sixth pin of the microcontroller U1; the first pin of the cooling module (2) is connected to the thirty-ninth pin of the microcontroller U1, and the second pin of the cooling module (2) is connected to the thirty-fifth pin of the microcontroller U1.

3. The intelligent constant temperature control system according to claim 2, characterized in that, It also includes a manual control module (3), which includes a first control switch (31), a second control switch (32) and a third control switch (33). The second pin of the first control switch (31) is connected to the first pin of the microcontroller U1, and the third pin of the first control switch (31) is connected to the third pin of the second control switch (32), the third pin of the third control switch (33) and the nineteenth pin of the microcontroller U1, respectively. The second pin of the second control switch (32) is connected to the second pin of the microcontroller U1, and the third pin of the third control switch (33) is connected to the third pin of the microcontroller U1.

4. The intelligent constant temperature control system according to claim 2, characterized in that, It also includes a display (4) having a first pin to a sixteenth pin. The first pin and the sixteenth pin of the display (4) are connected to the nineteenth pin of the microcontroller U1. The second pin of the display (4) is connected to the eighteenth pin of the microcontroller U1. The fourth pin of the display (4) is connected to the fifth pin of the microcontroller U1. The sixth pin of the display (4) is connected to the ninth pin of the microcontroller U1. The eleventh pin of the display (4) is connected to the sixteenth pin of the microcontroller U1. The twelfth pin of the display (4) is connected to the thirteenth pin of the microcontroller U1. The thirteenth pin of the display (4) is connected to the fourteenth pin of the microcontroller U1. The fourteenth pin of the display (4) is connected to the fifteenth pin of the microcontroller U1. The fifteenth pin of the display (4) is connected to the eighteenth pin of the microcontroller U1.

5. The intelligent constant temperature control system according to claim 2, characterized in that, It also includes a WIFI module (5), which has a GND terminal, a D7 terminal and a D6 terminal. The GND terminal of the WIFI module (5) is connected to the 40th pin of the microcontroller U1, the D7 terminal of the WIFI module (5) is connected to the 28th pin of the microcontroller U1, and the D6 terminal of the WIFI module (5) is connected to the 27th pin of the microcontroller U1.

6. The intelligent constant temperature control system according to claim 2, characterized in that, It also includes a voice module (6), which includes a connector J1 and a voice chip. The connector J1 has a first pin to a fourth pin. The first pin of the connector J1 is connected to the twentieth pin of the microcontroller U1. The second pin of the connector J1 is connected to the sixth pin of the microcontroller U1. The third pin of the connector J1 is connected to the seventh pin of the microcontroller U1. The fourth pin of the connector J1 is connected to the nineteenth pin of the microcontroller U1. The voice chip is electrically connected to the connector J1.

7. The intelligent constant temperature control system according to claim 2, characterized in that, The first connector (11) has a first pin and a second pin. The first pin of the first connector (11) is connected to the thirty-ninth pin of the microcontroller U1, and the second pin of the first connector (11) is connected to the thirty-sixth pin of the microcontroller U1. The heating rod is electrically connected to the first connector (11).

8. The intelligent constant temperature control system according to claim 2, characterized in that, The second connector (21) has a first pin and a second pin. The first pin of the second connector (21) is connected to the thirty-ninth pin of the microcontroller U1, and the second pin of the second connector (21) is connected to the thirty-fifth pin of the microcontroller U1. The cooler is electrically connected to the second connector (21).

9. The intelligent constant temperature control system according to claim 1, characterized in that, It also includes a storage module (7), which is electrically connected to the microcontroller U1.

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