Multi-functional intelligent water bath oven based on single-chip microcomputer

Abstract

The utility model relates to a kind of multifunctional intelligent water bath based on single-chip microcontroller, including control module, main body water tank, two-way temperature control module, ultrasonic water level sensor, temperature sensor module, relay;Control module is fixedly installed on the side wall of the front of main body water tank by bolt;The components of two-way temperature control module are respectively installed at the bottom center of the outer wall and inner side of main body water tank;Ultrasonic water level sensor is fixedly installed at the water tank mouth of main body water tank;Temperature sensor module is movably installed at the bottom of the inner wall of main body water tank and is used for collecting liquid temperature;Relay is fixedly installed at the outer side of the side wall of main body water tank;Control module is respectively electrically coupled with two-way temperature control module, ultrasonic water level sensor, temperature sensor module, relay signal coupling.The utility model improves water temperature monitoring and regulation precision, while reducing error;Realize dry burning protection and over-limit power-off;Realize that mobile terminal is remotely monitored to equipment, adapt to water, oil and a variety of scenes.

Description

Technical Field

[0001] This utility model relates to the field of laboratory equipment technology, and specifically to a multifunctional intelligent water bath based on a microcontroller. Background Technology

[0002] Water baths are primarily used for heating, distilling, and concentrating samples in a water bath, making them essential equipment in physicochemical laboratories. In laboratories, the demand for precise temperature control continues to rise, especially given the increasingly stringent temperature sensitivity requirements in biomedical research and industrial production. The technological shortcomings of traditional water bath equipment are becoming increasingly apparent in practical applications. For example, in cell culture experiments, human embryonic stem cell culture requires precise temperature control of 37±0.2℃, but traditional water baths, based on mechanical temperature control, often experience fluctuations exceeding ±1℃. One research team reportedly experienced a 30% increase in stem cell differentiation rate due to temperature drift, rendering their experimental data completely invalid. Furthermore, in the enzymatic reaction of insulin synthesis, traditional equipment cannot achieve gradient temperature control between 45℃ and 60℃. One pharmaceutical company was forced to manually adjust the temperature in stages, resulting in a 15% reduction in the yield of the target product. This limitation in functionality is even more pronounced in industrial settings. In a food processing plant, probiotic fermentation requires simultaneous 38°C constant temperature and 50rpm oscillation. Traditional water baths can only operate in a single mode, ultimately leading to a 40% decrease in bacterial activity. In a university chemistry lab, students conducting nitrobenzene reduction reactions encountered a safety hazard when the equipment couldn't be programmed with multiple temperature control stages, causing intermediate products to accumulate and overheat, resulting in a condenser tube rupture. Safety deficiencies are also frequently posing risks: During an overnight DNA denaturation experiment at a research institution, the water bath ran dry due to the water level being below the heating element, burning out the heating element and contaminating the entire batch of samples, resulting in direct economic losses exceeding 20,000 yuan. As cutting-edge fields such as mRNA vaccine preparation and semiconductor material annealing demand temperature control accuracy down to ±0.1°C, the lag of traditional water baths in intelligent monitoring and automatic adjustment is driving the industry to accelerate upgrades to new equipment equipped with PID intelligent algorithms, level sensors, and remote monitoring systems.

[0003] The shortcomings of existing technology are:

[0004] Because traditional water baths, which rely on mechanical temperature control, often experience temperature fluctuations of ±1℃ or more, experimental data may become invalid or the yield of the target product may decrease.

[0005] Because existing equipment cannot be programmed with multiple temperature control stages, the accumulation of reaction intermediates can cause the system to overheat, which can easily lead to a safety accident such as the condenser tube rupture.

[0006] Because existing equipment lacks water level warnings, water baths can dry out due to water levels falling below the heating element, which not only burns out the heating element but also contaminates the entire batch of samples. Utility Model Content

[0007] This invention addresses the aforementioned problems by providing a multifunctional intelligent water bath based on a microcontroller. Its purpose is to improve the accuracy of water temperature monitoring and control while reducing errors; to achieve dry-burn protection and over-limit power-off; to enable remote monitoring of the equipment via mobile devices; and to expand the application range of experimental liquids.

[0008] To solve the above problems, the technical solution provided by this utility model is as follows:

[0009] A multi-functional intelligent water bath based on a microcontroller includes a control module, a main water tank, a two-way temperature control module, an ultrasonic water level sensor, a temperature sensor module, and a relay, wherein:

[0010] The main water tank is a rectangular barrel-shaped structure with an open upper surface; the control module is fixedly installed on the front side wall of the main water tank by bolts; the components of the bidirectional temperature control module are respectively installed on the outer wall and the bottom center of the inner side of the main water tank, and are used to bidirectionally control the liquid temperature in the main water tank; the ultrasonic water level sensor is fixedly installed at the water inlet of the main water tank, with its installation direction so that its ultrasonic transmitter is perpendicular to the bottom of the water tank; the temperature sensor module is movably installed on the bottom of the inner wall of the main water tank and is used to collect the liquid temperature; the relay is fixedly installed on the outer side of the side wall of the main water tank; the control module is electrically coupled to the bidirectional temperature control module, the ultrasonic water level sensor, the temperature sensor module, and the relay; the relay is electrically coupled to each component of the bidirectional temperature control module.

[0011] Preferably, the control module includes a circuit board, an OLED display module, a main control chip, a touch button module, a Bluetooth wireless communication module, and a buzzer alarm module, wherein:

[0012] The OLED display module, the main control chip, the touch button module, the Bluetooth wireless communication module, and the buzzer alarm module are respectively installed at preset positions on the circuit board and are electrically coupled to the circuit board. The OLED display module is used to display the current temperature and water level of the liquid in the main water tank. The touch button module is used to set the temperature threshold and high / low water level threshold for the smart water bath, and to control the switching of each component of the bidirectional temperature control module. The Bluetooth wireless communication module is used to connect to a mobile client and to send real-time monitoring data to the mobile client and receive control commands from the mobile client. The buzzer alarm module is used to trigger an alarm to remind the operator when the temperature or water level of the liquid in the main water tank does not meet the set threshold.

[0013] Preferably, the main control chip is an STM32F103CBT6.

[0014] Preferably, the control module includes a manual mode and an automatic mode; in the manual mode, the water bath status is adjusted via a mobile client, and in the automatic mode, the mobile client locks the last operation and automatically controls it.

[0015] Preferably, the Bluetooth wireless communication module is a JDY31 module based on the Bluetooth 4.0 standard.

[0016] Preferably, the bidirectional temperature control module includes a semiconductor cooling chip and a heating chip; the semiconductor cooling chip is installed on the outer wall of the main water tank; and the heating chip is installed at the bottom center of the main water tank.

[0017] Preferably, the main water tank is made of transparent acrylic sheet.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] 1. Because this utility model can accurately monitor and regulate the liquid temperature in the water bath tank and display the water temperature in real time through OLED, the water temperature monitoring accuracy reaches 0.1℃ with an error of ≤0.77%, the temperature regulation reaches 0.1℃ with a steady-state error of ≤0.2℃.

[0020] 2. Because this utility model supports setting high and low water level thresholds and temperature thresholds through the main control board, a buzzer alarm is triggered when the water level exceeds or falls below the threshold, and the relay is automatically disconnected when the temperature exceeds the temperature threshold, thereby realizing dry burning protection and over-limit power cut-off.

[0021] 3. Because this utility model uses the JDY31 module based on the Bluetooth 4.0 standard to display information such as water temperature, water level, and working status of the device in real time on the Bluetooth end, and sets and switches the parameters of heating / cooling, it realizes remote monitoring of the device by the mobile terminal.

[0022] 4. Because the sensor and bidirectional temperature control module used in this invention have a wide operating range, they can be applied to liquids with properties not much different from water, such as oil. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a specific embodiment of the present utility model;

[0024] Figure 2 This is a front view structural diagram of a specific embodiment of the present utility model;

[0025] Figure 3 This is a rear view structural diagram of a specific embodiment of the present utility model;

[0026] Figure 4 This is a side view of a specific embodiment of the present utility model.

[0027] Figure 5 This is a schematic diagram of the front view of the components and circuit board assembly of a specific embodiment of this utility model;

[0028] Figure 6 This is a schematic diagram illustrating a specific embodiment of the present invention, showing a Bluetooth wireless communication module connected to a mobile client page to achieve human-computer intelligent interaction.

[0029] Figure 7a This is a schematic diagram showing the normal operation of the bidirectional temperature control module according to a specific embodiment of this utility model.

[0030] Figure 7b This is a schematic diagram showing the normal operation of the bidirectional temperature control module according to a specific embodiment of this utility model.

[0031] Figure 7c This is a schematic diagram showing the normal operation of the bidirectional temperature control module according to a specific embodiment of this utility model.

[0032] Figure 7d This is a schematic diagram showing the normal operation of the bidirectional temperature control module according to a specific embodiment of this utility model.

[0033] Figure 8a This is a schematic diagram of the over-limit protection function and dry-burn protection function of a specific embodiment of this utility model;

[0034] Figure 8b This is a schematic diagram of the over-limit protection function and dry-burn protection function of a specific embodiment of this utility model;

[0035] Figure 8c This is a schematic diagram of the over-limit protection function and dry-burn protection function of a specific embodiment of this utility model;

[0036] Figure 9a This is a schematic diagram showing the ultrasonic sensor and temperature sensing module working normally according to a specific embodiment of the present invention.

[0037] Figure 9b This is a schematic diagram showing the ultrasonic sensor and temperature sensing module working normally according to a specific embodiment of the present invention.

[0038] Figure 9c This is a schematic diagram showing the ultrasonic sensor and temperature sensing module operating normally in a specific embodiment of this utility model.

[0039] The components include: 100. Control module, 110. Circuit board, 120. OLED display module, 130. Main control chip, 140. Touch button module, 150. Bluetooth wireless communication module, 160. Buzzer alarm module, 200. Main water tank, 300. Two-way temperature control module, 310. Semiconductor cooling chip, 320. Heating element, 400. Ultrasonic water level sensor, 500. Temperature sensor module, and 600. Relay. Detailed Implementation

[0040] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0041] This utility model application claims protection for a multifunctional intelligent water bath based on a microcontroller, comprising a control module 100, a main water tank 200, a two-way temperature control module 300, an ultrasonic water level sensor 400, a temperature sensor module 500, and a relay 600, wherein:

[0042] The main water tank 200 is a rectangular barrel-shaped structure with an open upper surface; the control module 100 is fixedly installed on the front side wall of the main water tank 200 by bolts; the components of the bidirectional temperature control module 300 are respectively installed on the outer wall and the bottom center of the inner side of the main water tank 200, and are used for bidirectional control of the liquid temperature in the main water tank 200; the ultrasonic water level sensor 400 is fixedly installed at the water inlet of the main water tank 200, with its installation direction such that its ultrasonic transmitter is perpendicular to the bottom of the water tank, and is used to monitor the main water tank 200. The liquid level in the tank is monitored; a temperature sensor module 500 is movably installed at the bottom of the inner wall of the main water tank 200 and is used to collect the liquid temperature; a relay 600 is fixedly installed on the outer side of the side wall of the main water tank 200; the control module 100 is electrically coupled to the bidirectional temperature control module 300, the ultrasonic water level sensor 400, the temperature sensor module 500, and the relay 600; the relay 600 is electrically coupled to each component of the bidirectional temperature control module 300, and the relay 600 is an important component for driving the bidirectional temperature control module 300.

[0043] It should be noted that the control module 100 includes a circuit board 110, an OLED display module 120, a main control chip 130, a touch button module 140, a Bluetooth wireless communication module 150, and a buzzer alarm module 160. The OLED display module 120, main control chip 130, touch button module 140, Bluetooth wireless communication module 150, and buzzer alarm module 160 are respectively installed at preset positions on the circuit board 110 and are electrically coupled to the circuit board 110. The OLED display module 120 is used to display the current position in the main water tank 2. The main control chip 130 is the control hub of the entire water bath; the touch button module 140 is used to set the temperature threshold and high and low water level thresholds for the operation of the intelligent water bath, and to control the switching of various components of the bidirectional temperature control module 300; the Bluetooth wireless communication module 150 is used to connect to the mobile client, and to send real-time monitoring data to the mobile client and receive control commands issued by the mobile client; the buzzer alarm module 160 is used to trigger an alarm to remind the operator when the temperature or water level of the liquid in the main water tank 200 does not meet the set threshold.

[0044] It should be further explained that the client can control the switching of the semiconductor cooling chip 310 and the heating element 320 to manage the working status of the water bath. The main circuit board 110 is the common carrier of the components, ensuring the continuity between the components and enabling the water bath to fully realize its functions.

[0045] In this specific embodiment, the main control chip 130 is an STM32F103CBT6.

[0046] In this specific embodiment, the Bluetooth wireless communication module 150 is a JDY31 module based on the Bluetooth 4.0 standard.

[0047] It should be further explained that the control module 100 includes manual mode and automatic mode; in manual mode, the water bath status is adjusted through a mobile client, and in automatic mode, the mobile client locks the last operation and automatically controls it.

[0048] It needs to be further explained that, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, when the main control chip 130 is powered on and liquid is added to the main water tank 200, the OLED display module 120 can display the current water temperature and water level in the main water tank 200 in real time. The specific operation functions of the touch button module 140 are as follows: the second and third buttons of the touch button module 140, from left to right, can control the switching of the heating element 320 and the semiconductor cooling element 310; the fourth button of the touch button module 140 (from left to right) can switch between the manual and automatic modes of the water bath; the first button of the touch button module 140 (from left to right) can open the threshold setting interface; after opening the threshold setting interface, the fourth button of the touch button module 140 (from left to right) can adjust the target water temperature threshold or high and low water level threshold; at this time, the second and third buttons of the touch button module 140 can change the threshold value.

[0049] It needs to be further explained that, such as Figure 6 As shown, after the Bluetooth wireless communication module 150 is connected to the mobile client, it can display in real time the water temperature, water level height from the bottle opening, preset water temperature threshold, preset high and low water level thresholds, and the on / off status of the semiconductor cooling chip 310 and heating element 320 in the main water tank. When switched to manual mode A via the touch button module 140, the mobile client can not only control the on / off of the semiconductor cooling chip 310 and heating element 320 of the water bath, but also set the temperature threshold.

[0050] It should be noted that the bidirectional temperature control module 300 includes a semiconductor cooling chip 310 and a heating element 320. The semiconductor cooling chip 310 is installed on the outer wall of the main water tank 200 to reduce the impact of its own heat radiation on the cooling operation. The heating element 320 is installed at the bottom center of the main water tank 200 to maximize the uniform heating of the liquid.

[0051] It should be noted that, as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the main water tank 200 is made of transparent acrylic sheet, which makes it easy to observe the liquid state when the water bath is working.

[0052] In this specific embodiment, the ultrasonic water level sensor 400 has a monitoring accuracy of 1 cm. The temperature sensor module 500 has a temperature monitoring accuracy of 0.1℃. The bidirectional temperature control module 300 has a temperature regulation accuracy of 0.1℃.

[0053] It should be further explained that the ultrasonic water level sensor 400, temperature sensor module 500, semiconductor cooling chip 310 and heating element 320 have a wide operating range. Therefore, the water bath can be used with water or other liquids with similar properties, such as oil.

[0054] It should be noted that, as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, after the water bath's operating parameters are set via the touch button module 140, the water bath will operate normally within the set threshold. When the liquid temperature in the main water tank 200 reaches the preset temperature threshold, the temperature sensor module 500 will transmit the temperature signal to the main control chip 130. After receiving the signal, the main control chip 130 compares it with the preset threshold. If the preset temperature threshold is reached, the relay 600 will be disconnected to turn off the heating element 320, thus completing the over-limit protection function. Similarly, when the ultrasonic water level sensor 400 detects that the water level is lower or higher than the preset low or high water level threshold, it will transmit the signal to the main control chip 130. The main control chip 130 will immediately trigger the buzzer alarm module 160 to remind the experimenter that the water bath may be dry-burning or overflowing, thus realizing the dry-burning protection function. During the above process, the OLED display module 120 can display the changes in the liquid in the main water tank in real time.

[0055] It should be noted that, as Figure 7a , 7b As shown in 7c, 7d, 8a, 8b, 8c, 9a, 9b, and 9c, this utility model can achieve the following technical effects: It accurately monitors and regulates the liquid temperature in the water bath, displays the water temperature in real time via an OLED, achieves a water temperature monitoring accuracy of 0.1℃ with an error of ≤0.77%, and a temperature regulation accuracy of 0.1℃ with a steady-state error of ≤0.2℃; it supports setting high and low water level thresholds and temperature thresholds via the main control board, triggering a buzzer alarm when the water level exceeds or falls below the threshold, and automatically disconnecting the relay when the temperature exceeds the temperature threshold, thus achieving dry-burning protection and over-limit power-off; through the JDY31 module based on the Bluetooth 4.0 standard, it displays the device's water temperature, water level, and working status in real time via Bluetooth, sets and switches heating / cooling parameters, and realizes remote monitoring of the device via a mobile device; the sensor and bidirectional temperature control module used in this utility model have a wide working range and can be applied to liquids with properties similar to water, such as oil.

[0056] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the present invention is in a state with fewer features than all of the disclosed individual embodiments. Therefore, the appended claims are hereby clearly incorporated into the detailed description, wherein each claim stands alone as a preferred embodiment of the present invention.

[0057] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use this invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the widest scope of the principles and novel features disclosed in this application.

[0058] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is interpreted in a manner similar to the term "including," as interpreted when used as a conjunction in the claims. Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."

[0059] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A multifunctional intelligent water bath based on a microcontroller, characterized in that: It includes a control module (100), a main water tank (200), a two-way temperature control module (300), an ultrasonic water level sensor (400), a temperature sensor module (500), and a relay (600), wherein: The main water tank (200) is a rectangular barrel-shaped structure with an open upper surface; the control module (100) is fixedly installed on the side wall directly in front of the main water tank (200) by bolts; the components of the bidirectional temperature control module (300) are respectively installed on the outer wall and the bottom center of the inner side of the main water tank (200), and are used to bidirectionally control the liquid temperature in the main water tank (200); the ultrasonic water level sensor (400) is fixedly installed at the water inlet of the main water tank (200), and its installation direction is such that its ultrasonic transmitter is perpendicular to the water tank. Bottom; the temperature sensor module (500) is movably installed on the bottom of the inner wall of the main water tank (200) and used to collect liquid temperature; the relay (600) is fixedly installed on the outer side of the side wall of the main water tank (200); the control module (100) is electrically coupled to the bidirectional temperature control module (300), the ultrasonic water level sensor (400), the temperature sensor module (500), and the relay (600); the relay (600) is electrically coupled to each component of the bidirectional temperature control module (300).

2. The multifunctional intelligent water bath based on a single-chip microcomputer according to claim 1, characterized in that: The control module (100) includes a circuit board (110), an OLED display module (120), a main control chip (130), a touch button module (140), a Bluetooth wireless communication module (150), and a buzzer alarm module (160), wherein: The OLED display module (120), the main control chip (130), the touch button module (140), the Bluetooth wireless communication module (150), and the buzzer alarm module (160) are respectively installed at preset positions on the circuit board (110) and are electrically coupled to the circuit board (110); the OLED display module (120) is used to display the temperature and water level of the liquid in the main water tank (200); the touch button module (140) is used to set the temperature threshold and high and low water level thresholds for the operation of the smart water bath, and to control the switching of each component of the bidirectional temperature control module (300); the Bluetooth wireless communication module (150) is used to connect to the mobile client, and to send real-time monitoring data to the mobile client and receive control commands issued by the mobile client; the buzzer alarm module (160) is used to trigger an alarm to remind the operator when the temperature or water level of the liquid in the main water tank (200) does not meet the set threshold.

3. The multifunctional intelligent water bath based on a single-chip microcomputer according to claim 2, characterized in that: The main control chip (130) is an STM32F103CBT6.

4. The multifunctional intelligent water bath based on a single-chip microcomputer according to claim 3, characterized in that: The control module (100) includes a manual mode and an automatic mode; in the manual mode, the water bath status is adjusted through a mobile client, and in the automatic mode, the mobile client locks the last operation and automatically controls it.

5. The multifunctional intelligent water bath based on a single-chip microcomputer according to claim 4, characterized in that: The Bluetooth wireless communication module (150) is a JDY31 module based on the Bluetooth 4.0 standard.

6. The multifunctional intelligent water bath based on a single-chip microcomputer according to claim 1, characterized in that: The bidirectional temperature control module (300) includes a semiconductor cooling chip (310) and a heating chip (320); the semiconductor cooling chip (310) is installed on the outer wall of the main water tank (200); the heating chip (320) is installed at the bottom center of the main water tank (200).

7. The multifunctional intelligent water bath based on a single-chip microcomputer according to claim 1, characterized in that: The main water tank (200) is made of transparent acrylic sheet.

Images