Colloidal gold program control preparation system and method based on single chip microcomputer

Abstract

The invention belongs to the technical field of colloidal gold preparation, and provides a colloidal gold program control preparation system and method based on a single chip microcomputer, and the system comprises a core control module, a plurality of system sample adding modules, a heating and stirring module and a man-machine interaction module; a single-chip microcomputer core board, a serial communication port and single-chip microcomputer pins are embedded in the core control module; the system sample adding module comprises a stepping motor driver, a stepping motor unit, a sliding rail, an objective table, a customized baffle, a sample adding injector and a sample adding pipeline which are connected in sequence; the heating and stirring module comprises a temperature sensing element, a magnetic rotor, a high-power heating plate, an OLED (Organic Light Emitting Diode) display, a magnet, a customized driving fan blade, a direct current motor and a relay; the man-machine interaction module comprises a power supply interface. According to the invention, automation of colloidal gold preparation is realized through the single-chip microcomputer core board; the accurate proportioning of raw materials is realized through the core control module and the plurality of system sample adding modules; and the stable adjustment of the reaction environment is realized through the magnetic rotor and the high-power heating plate.

Description

Technical Field

[0001] The invention relates to the technical field of colloidal gold preparation, and in particular to a colloidal gold program-controlled preparation system and method based on a single-chip microcomputer. Background Art

[0002] As an important nanomaterial, colloidal gold has a wide range of applications in biomedicine, chemical analysis, etc. Its unique physical and chemical properties, such as the surface plasmon resonance effect, make colloidal gold show great potential in biomarkers, drug delivery, sensor construction, etc.

[0003] However, the preparation process of colloidal gold is complicated and requires precise control. Traditional colloidal gold preparation methods mostly rely on manual operations, which have problems such as insufficient automation, low control accuracy, poor repeatability, and large differences in manual preparation batches. In the control of reaction conditions, such as the adjustment of parameters such as temperature, pH value, and stirring speed, it is difficult to achieve ideal stability and consistency, resulting in uneven size distribution of the prepared colloidal gold particles, affecting the subsequent application effect. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a colloidal gold program-controlled preparation system and method based on a single-chip microcomputer, which realizes the automation of colloidal gold preparation through the single-chip microcomputer core board; realizes the precise proportion of raw materials through the core control module and several system sample adding modules; and realizes the stable adjustment of the reaction environment through the magnetic rotor and the high-power heating plate.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A colloidal metal process control preparation system based on a single-chip microcomputer comprises: a core control module, a plurality of system sample loading modules, a heating and stirring module and a human-computer interaction module; the core control module is embedded with a single-chip microcomputer core board, a serial communication port and a single-chip microcomputer pin; the system sample loading module comprises: a stepper motor driver, a stepper motor unit, a slide rail, a stage, a customized baffle, a sample loading syringe and a sample loading pipeline connected in sequence; the heating and stirring module comprises: a temperature sensing element, a magnetic rotor, a high-power heating plate, an OLED display, a magnet, a customized driving fan blade, a DC motor and a relay; the human-computer interaction module comprises: a power supply interface;

[0007] The microcontroller pins are connected to the stepper motor driver, the relay and the OLED display respectively through wires and the microcontroller pins; the temperature sensing element is arranged inside the target reaction container; the magnetic rotor is arranged at the inner bottom of the target reaction container; the high-power heating plate is arranged at the outer bottom of the target reaction container; the magnet is arranged on the blades of the customized drive blades; the customized drive blades are fixedly connected to the DC motor; the high-power heating plate is connected to the relay; the power supply interface is connected to the serial communication port;

[0008] The single-chip microcomputer core board is used to control the stepper motor driver and the relay, and to perform serial communication and human-computer interaction through the serial communication port; the stepper motor driver is used to control the working state of the stepper motor unit; the stepper motor unit is used to change the position of the stage by driving the slide rail; the stage is used to drive the sample injection syringe for injection through the customized baffle; the sample injection pipeline is used to transport the liquid output by the sample injection syringe to the target reaction container; the temperature sensing element is used to detect the temperature of the liquid inside the target reaction container, obtain temperature data, and send the temperature data to the single-chip microcomputer core board; the magnetic rotor is used to stir the liquid inside the target reaction container; the high-power heating plate is used to heat the liquid inside the target reaction container; the customized drive fan blade is used to drive the magnetic rotor to rotate; the relay is used to control the heating power of the high-power heating plate.

[0009] Preferably, the model of the single-chip microcomputer core board is STM32F103C8T6.

[0010] Preferably, the single-chip microcomputer core board is embedded with a preset automation program;

[0011] The automation program is used to control the working state of the stepper motor driver and the DC motor according to preset parameters, and to control the working state of the relay according to the temperature data.

[0012] Preferably, the human-computer interaction module further comprises: an interaction unit; the interaction unit comprises: a touch screen and a keyboard;

[0013] The input unit is used to burn working parameters into the single-chip microcomputer core board and display the operating data of the system sample adding module and the heating and stirring module.

[0014] Preferably, a method for preparing colloidal gold by program control based on a single chip microcomputer comprises:

[0015] Respectively adding a 1% gold chloride solution, a 1% trisodium citrate solution and double distilled water into different sample adding modules of the system;

[0016] Burning the working parameters into the single chip microcomputer core board using the interactive unit;

[0017] According to the working parameters, the system sample adding module is controlled by the single chip core board to inject 1% mass fraction of gold chloride solution and double distilled water into the target reaction container;

[0018] The target reaction container is heated by the high-power heating plate, the solution in the target reaction container is stirred by the magnetic rotor, and the temperature data is collected by the temperature sensing element;

[0019] When the temperature data reaches the preset temperature standard, according to the working parameters, the system sample adding module is controlled by the single chip core board to inject a 1% trisodium citrate solution into the target reaction container;

[0020] According to the preset fusion time, the magnetic rotor is used to stir the solution in the target reaction container to obtain a colloidal gold solution.

[0021] The present invention discloses the following technical effects:

[0022] The invention provides a colloidal gold program-controlled preparation system and method based on a single-chip microcomputer. The single-chip microcomputer core board solves the defect that the existing colloidal gold preparation relies on manual operation, and realizes the automation of colloidal gold preparation; the core control module and a plurality of system sample adding modules solve the defect of poor precision in manual preparation, and realizes the accurate proportioning of raw materials; the magnetic rotor and the high-power heating plate solve the defects of insufficient stirring and poor temperature control in the manual preparation of colloidal gold, and realizes the stable adjustment of the reaction environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 A structural diagram of a colloidal metal process control system based on a single chip microcomputer provided in an embodiment of the present invention;

[0025] Figure 2 A structural diagram of a system sample loading module provided in an embodiment of the present invention;

[0026] Figure 3 A structural diagram of a heating and stirring module provided in an embodiment of the present invention;

[0027] Figure 4A partial structural diagram of a DC motor provided by an embodiment of the present invention;

[0028] Figure 5 A structural diagram of a core control module provided by an embodiment of the present invention;

[0029] Description of reference numerals:

[0030] 1-Core control module; 2-System loading module; 3-Heating and stirring module; 4-Human-computer interaction module; 5-MCU core board; 6-Serial communication port; 7-Stepper motor unit; 8-Stepper motor driver; 9-Slide rail; 10-Loading syringe; 11-Loading pipe; 12-Temperature sensing element; 13-Relay; 14-DC motor; 15-High-power heating plate; 16-Customized drive fan blades; 17-Magnet; 18-Magnetic rotor; 19-Power supply interface; 20-Customized baffle; 21-Stage; 22-OLED display; 23-MCU pin; 24-Display screen; 25-Wire. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0032] The purpose of the present invention is to provide a colloidal gold program-controlled preparation system and method based on a single-chip microcomputer, which realizes the automation of colloidal gold preparation through a single-chip microcomputer core board; realizes the precise proportion of raw materials through a core control module and several system sample adding modules; and realizes the stable adjustment of the reaction environment through a magnetic rotor and a high-power heating plate.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Figure 1 The structure diagram of the colloidal metal process control system based on a single chip microcomputer provided in the embodiment of the present invention is as follows: Figure 2 This is a structural diagram of the system sample loading module 2 provided in an embodiment of the present invention. Figure 3 This is a structural diagram of the heating and stirring module 3 provided in an embodiment of the present invention. Figure 4 A partial structural diagram of a DC motor 14 provided in an embodiment of the present invention, Figure 5 The structure diagram of the core control module 1 provided in the embodiment of the present invention is as follows: Figures 1 to 5As shown, the present invention provides a colloidal metal process control preparation system based on a single-chip microcomputer, comprising: a core control module 1, a plurality of system sample loading modules 2, a heating and stirring module 3 and a human-computer interaction module 4; the core control module 1 is embedded with a single-chip microcomputer core board 5, a serial communication port 6 and a single-chip microcomputer pin 23; the system sample loading module 2 comprises: a stepper motor driver 8, a stepper motor unit 7, a slide rail 9, a stage 21, a customized baffle 20, a sample loading syringe 10 and a sample loading pipeline 11 connected in sequence; the heating and stirring module 3 comprises: a temperature sensing element 12, a magnetic rotor 18, a high-power heating plate 15, an OLED display 22, a magnet 17, a customized drive fan blade 16, a DC motor 14 and a relay 13; the human-computer interaction module 4 comprises: a power supply interface 19;

[0035] The single-chip microcomputer pin 23 is connected to the stepper motor driver 8, the relay 13 and the OLED display 22 respectively through the wire 25 and the single-chip microcomputer pin 23; the temperature sensing element 12 is arranged inside the target reaction container; the magnetic rotor 18 is arranged at the inner bottom of the target reaction container; the high-power heating plate 15 is arranged at the outer bottom of the target reaction container; the magnet 17 is arranged on the blade of the customized drive blade 16; the customized drive blade 16 is fixedly connected to the DC motor 14; the high-power heating plate 15 is connected to the relay 13; the power supply interface 19 is connected to the serial communication port 6;

[0036] The single-chip microcomputer core board 5 is used to control the stepper motor driver 8 and the relay 13, and to perform serial communication and human-computer interaction through the serial communication port 6; the stepper motor driver 8 is used to control the working state of the stepper motor unit 7; the stepper motor unit 7 is used to change the position of the stage 21 by driving the slide rail 9; the stage 21 is used to drive the sample injection syringe 10 for injection through the customized baffle 20; the sample injection pipe 11 is used to transport the liquid output by the sample injection syringe 10 to the target reaction container; the temperature sensing element 12 is used to detect the temperature of the liquid inside the target reaction container, obtain temperature data, and send the temperature data to the single-chip microcomputer core board 5; the magnetic rotor 18 is used to stir the liquid inside the target reaction container; the high-power heating plate 15 is used to heat the liquid inside the target reaction container; the customized drive fan blade 16 is used to drive the magnetic rotor 18 to rotate; the relay 13 is used to control the heating power of the high-power heating plate 15.

[0037] Optionally, the single-chip microcomputer core board 5, the serial communication port 6 and the single-chip microcomputer pin 23 together constitute a main control unit, which is responsible for the overall system logic control and instruction execution coordination operation.

[0038] Specifically, the model of the single chip microcomputer core board 5 is STM32F103C8T6.

[0039] Preferably, the single chip microcomputer core board 5 is embedded with a preset automation program;

[0040] The automation program is used to control the working states of the stepper motor driver 8 and the DC motor 14 according to preset parameters, and to control the working state of the relay 13 according to the temperature data.

[0041] Specifically, the human-computer interaction module 4 further includes: an interaction unit; the interaction unit includes: a touch screen and a keyboard;

[0042] The input unit is used to burn working parameters into the single chip microcomputer core board 5 and display the operating data of the system sample adding module 2 and the heating and stirring module 3 .

[0043] Furthermore, a method for preparing colloidal gold by program control based on a single chip microcomputer comprises:

[0044] Adding a 1% gold chloride solution, a 1% trisodium citrate solution and double distilled water into different sample adding modules 2 of the system respectively;

[0045] Using the interactive unit to burn the working parameters into the single chip microcomputer core board 5;

[0046] According to the working parameters, the single chip core board 5 is used to control the system sample adding module 2 to inject 1% mass fraction of gold chloride solution and double distilled water into the target reaction container;

[0047] The target reaction container is heated by the high-power heating plate 15, the solution in the target reaction container is stirred by the magnetic rotor 18, and the temperature data is collected by the temperature sensing element 12;

[0048] When the temperature data reaches the preset temperature standard, according to the working parameters, the single chip core board 5 controls the system sample adding module 2 to inject a 1% trisodium citrate solution into the target reaction container;

[0049] According to the preset fusion time, the magnetic rotor 18 is used to stir the solution in the target reaction container to obtain a colloidal gold solution.

[0050] Specifically, the core control module 1 uses a high-performance single-chip microcomputer as the main control unit, which is responsible for the coordinated operation of the entire system logic control, data processing and instruction execution. This module uses a preset program algorithm to accurately control the action timing and parameter settings of each actuator, including key parameters such as sample addition amount, heating temperature, stirring speed, etc., to ensure that the colloidal gold preparation process is strictly carried out according to the preset process curve.

[0051] Furthermore, the system sample addition module 2 adopts a precision liquid handling unit, and realizes accurate measurement and automatic sample addition of various reactants (such as gold chloride solution, reducing agent, etc.) through the stepper motor drive principle. The module can be equipped with syringes of various specifications, which can be quickly replaced according to different preparation requirements to meet the sample addition requirements of different volumes and concentrations. The whole process of sample addition is monitored by the core control module 1 to ensure the accuracy of the sample addition amount and effectively avoid human operation errors.

[0052] Preferably, the heating and stirring module 3 integrates an intelligent temperature control system and an efficient stirring device to provide a stable temperature environment and uniform mixing conditions for colloidal gold preparation. The temperature control system uses a precise control heating element to ensure that the temperature of the reaction liquid quickly reaches and stabilizes at the set value, while avoiding the influence of overheating or temperature fluctuations on the preparation effect. The stirring device uses a magnetic stirring method to ensure that the reactants are fully mixed and promote the uniform generation of colloidal gold particles.

[0053] Optionally, the human-computer interaction module 4 provides an intuitive and easy-to-use operation interface and rich information display functions. Users can use this module to set preparation parameters (such as temperature, time, stirring speed, etc.), view real-time status (such as current temperature, remaining time, etc.), and receive system prompts. In addition, this module also supports data recording and export functions, which facilitates users to trace and analyze the preparation process and provide data support for subsequent process optimization.

[0054] Specifically, the system designed in this embodiment is mainly composed of a single-chip microcomputer as a core control unit, connecting and controlling the system sample addition module 2, the heating and stirring module 3, and the human-computer interaction module 4. The single-chip microcomputer selects the STM32 model with high performance, low power consumption and rich peripheral interfaces to ensure the stability and scalability of the system. Pin control is realized by single-chip microcomputer programming, and the single-chip microcomputer pin 23 is reasonably allocated and matched with peripheral hardware, thereby realizing the programmed preparation of colloidal gold. First, in terms of sample addition, the principle of single-chip microcomputer driving stepper motor is used, and the moving distance and moving speed of the stepper motor are controlled by controlling the number and frequency of input pulses. The sample addition syringe 10 is placed at the front end of the stepper motor and fixed, and the single-chip microcomputer is used to control the quantitative liquid addition. Secondly, in terms of heating, the single-chip microcomputer is used to control the relay 13 components to realize the task of low-power electrical appliances controlling high-power electrical appliances, and the DS18B20 temperature sensing element 12 is matched to realize real-time temperature data feedback, and finally complete the constant temperature heating task. In terms of magnetic stirring, the working principle of the repulsion characteristics of magnetic materials is used to drive the base with opposite polarities at both ends to rotate through the DC motor 14, and the polarity change at both ends drives the magnetic rotor to rotate to complete the stirring work. Finally, in terms of human-computer interaction, parameter instructions are input on the front-end interface, and the instructions control the microcontroller through serial communication to complete the corresponding preparation work.

[0055] Preferably, the core control module 1 uses an advanced STM32F103C8T6 single-chip microcomputer as the main control chip; the chip has a sufficient number of pins and has powerful data processing and command sending capabilities. It uses a pre-written program and software developed by Keil uVision5 to achieve automated and precise control of the entire colloidal gold preparation process. The module is closely connected with other modules, receives and analyzes data information from the system sample addition module 2, the heating and stirring module 3, and the human-computer interaction module 4 in real time, and issues corresponding control instructions in a timely and accurate manner according to preset rules and user-set parameters.

[0056] Furthermore, the system loading module 2 is composed of a slide, a stage 21, a custom baffle 20, a loading syringe 10, and a loading pipe 11. The single-chip microcomputer controls the advancement distance of the stepper motor and the required injection volume to achieve accurate loading. The loading pipe 11 ensures that the reagents can be accurately delivered to the reaction container. The system loading module 2 can realize the sequential and quantitative addition of different reagents, ensuring the accurate supply of raw materials in the colloidal gold preparation process.

[0057] Specifically, the heating and stirring module 3 is composed of an efficient heating element, a magnetic rotor 18 and a temperature element. The heating element can heat the reaction system to a set temperature quickly and stably according to the instructions of the core control module 1, and maintain precise temperature control. The magnetic rotor 18 adjusts the stirring speed through the single-chip microcomputer. The temperature element monitors the temperature of the reaction solution in real time, and at the same time, the temperature element feeds back the real-time temperature to the single-chip microcomputer to form a closed-loop control. The magnetic rotor 18 can stir the reaction system at a suitable speed and strength to promote uniform reaction. The heating and stirring module 3 works in conjunction with the core control module 1 to provide an ideal reaction environment for the generation of colloidal gold.

[0058] Optionally, the human-computer interaction module 4 is equipped with an input device such as an easy-to-operate touch screen or button, and a clear and intuitive display screen 24. The user can conveniently input various parameters of colloidal gold preparation, such as sample addition amount, heating temperature range, stirring speed, etc. through the human-computer interaction module 4. At the same time, the display screen 24 displays the system's operating status, parameter values, preparation progress and other information in real time, which is convenient for the user to understand and grasp the preparation situation at any time. The human-computer interaction module 4 greatly improves the ease of use and operability of the system.

[0059] Further, the system is integrated and tested. The system sample adding module 2, heating and stirring module 3 and human-computer interaction module 4 are connected to the wire 25 of the single-chip computer through the wire 25 to form a complete colloidal gold process control preparation system. After the integration is completed, the system is tested to verify the functions of each module and the stability of the entire system. The test content includes sample adding accuracy test, temperature control accuracy test, stirring effect evaluation and human-computer interaction experience test, etc.

[0060] Specifically, the system designed in this embodiment uses the trisodium citrate reduction method to prepare colloidal gold as follows:

[0061] Before the preparation system is run, a 1% gold chloride solution and a 1% trisodium citrate solution are configured to prepare the system for sample addition. First, the system is initialized, and the single-chip microcomputer performs a system self-check to confirm that each module is connected normally and there is no fault alarm. The user sets the preparation parameters through the human-computer interaction module 4, including the amount of 1% gold tetrachloride solution, double distilled water and 1% trisodium citrate solution, heating temperature and stirring speed. Secondly, after entering the preset value, press the start button to start the motor one or two. After receiving these parameters, the core control module 1 sends instructions to the sample addition module and adds liquid, accurately adding a certain amount of 1% gold tetrachloride solution and a certain amount of double distilled water to the reaction vessel through the sample addition pipe 11, and the preset temperature is 50°C and the speed is 30rpm. When the motor 2 is started, the single chip microcomputer receives the signal and heats through the heating module. The temperature is detected by the DS18B20 temperature sensor to determine whether the temperature reaches the preset value. If not, heating continues. If it reaches, the motor 3 is turned on for injection, and the heating time timing is turned on at this moment to ensure that the temperature remains unchanged within the fixed time of the chemical reaction of the reagent. After the heating and stirring module 3 is started, the magnetic rotor 18 is turned on for stirring. The heating element quickly brings the sample solution temperature to the preset temperature and keeps it stable. After the solution is stable, an appropriate amount of trisodium citrate solution is added again according to the instructions. According to the experimental requirements, heating and stirring are continued at the set speed for a period of time to ensure that the reaction is fully carried out. The single chip microcomputer controls the heating power and stirring speed to ensure that the reaction liquid temperature is stable and evenly mixed.

[0062] Further, after the program is turned on, it can be intuitively seen that the OLED display screen 24 lights up and displays relevant parameters, and the temperature data display of the OLED display screen 24 and the front-end rotation parameter settings of the same solution are recorded at the same time, providing users with more accurate real-time data as a reference. Observe the color change of the reaction solution, which gradually changes from light yellow to gray-black, and finally turns to orange-red. Continue heating for a period of time, usually 7 to 15 minutes, to ensure that the reduction reaction is fully carried out. After the reaction is completed, turn off the heating and stirring module 3, and the reaction solution is naturally cooled to room temperature. After cooling, adjust the solution volume to the original set value as needed, and perform subsequent treatment (such as adjusting the pH value, centrifugal removal of impurities, etc.). After the above process, gold atoms gather into gold particles of a certain size, and become a stable colloidal state due to electrostatic action, i.e. colloidal gold. Use tools such as spectrophotometers to detect the absorption peaks and other parameters of the prepared colloidal gold solution for result detection and recording to verify its quality. The key parameters and results in the preparation process are recorded in the storage unit of the human-computer interaction module 4 for subsequent analysis.

[0063] The beneficial effects of the present invention are as follows:

[0064] The present invention realizes the automation of colloidal gold preparation through the single-chip core board; realizes the precise proportion of raw materials through the core control module and several system sample adding modules; realizes the stable regulation of the reaction environment through the magnetic rotor and high-power heating plate

[0065] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0066] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A colloidal gold process control preparation system based on a single chip microcomputer, characterized in that: include: Core control module, several system sample adding modules, heating and stirring modules and human-computer interaction module; The core control module has an embedded single-chip core board, a serial communication port and a single-chip pin; the system loading module includes: a stepper motor driver, a stepper motor unit, a slide rail, a stage, a customized baffle, a loading syringe and a loading pipe connected in sequence; the heating and stirring module includes: a temperature sensing element, a magnetic rotor, a high-power heating plate, an OLED display, a magnet, a customized drive fan blade, a DC motor and a relay; the human-computer interaction module includes: a power supply interface; The microcontroller pins are connected to the stepper motor driver, the relay and the OLED display respectively through wires and the microcontroller pins; the temperature sensing element is arranged inside the target reaction container; the magnetic rotor is arranged at the inner bottom of the target reaction container; the high-power heating plate is arranged at the outer bottom of the target reaction container; the magnet is arranged on the blades of the customized drive blades; the customized drive blades are fixedly connected to the DC motor; the high-power heating plate is connected to the relay; the power supply interface is connected to the serial communication port; The single-chip microcomputer core board is used to control the stepper motor driver and the relay, and to perform serial communication and human-computer interaction through the serial communication port; the stepper motor driver is used to control the working state of the stepper motor unit; the stepper motor unit is used to change the position of the stage by driving the slide rail; the stage is used to drive the sample injection syringe for injection through the customized baffle; the sample injection pipeline is used to transport the liquid output by the sample injection syringe to the target reaction container; the temperature sensing element is used to detect the temperature of the liquid inside the target reaction container, obtain temperature data, and send the temperature data to the single-chip microcomputer core board; the magnetic rotor is used to stir the liquid inside the target reaction container; the high-power heating plate is used to heat the liquid inside the target reaction container; the customized drive fan blade is used to drive the magnetic rotor to rotate; the relay is used to control the heating power of the high-power heating plate.

2. According to the single chip microcomputer-based colloidal metal process control preparation system of claim 1, characterized in that: The model of the single chip microcomputer core board is STM32F103C8T6.

3. According to the single chip microcomputer-based colloidal metal process control preparation system of claim 1, characterized in that: The single-chip microcomputer core board is embedded with a preset automation program; The automation program is used to control the working state of the stepper motor driver and the DC motor according to preset parameters, and to control the working state of the relay according to the temperature data.

4. The colloidal metal process control preparation system based on a single chip microcomputer according to claim 1 is characterized in that: The human-computer interaction module further includes: an interaction unit; the interaction unit includes: a touch screen and a keyboard; The input unit is used to burn working parameters into the single-chip microcomputer core board and display the operating data of the system sample adding module and the heating and stirring module.

5. A method for preparing colloidal gold by program control based on a single chip microcomputer, characterized in that: The method for the colloidal metal process control preparation system based on a single chip microcomputer as claimed in claim 4 comprises: Respectively adding a 1% gold chloride solution, a 1% trisodium citrate solution and double distilled water into different sample adding modules of the system; Burning the working parameters into the single chip microcomputer core board using the interactive unit; According to the working parameters, the system sample adding module is controlled by the single chip core board to inject 1% mass fraction of gold chloride solution and double distilled water into the target reaction container; The target reaction container is heated by the high-power heating plate, the solution in the target reaction container is stirred by the magnetic rotor, and the temperature data is collected by the temperature sensing element; When the temperature data reaches the preset temperature standard, according to the working parameters, the system sample adding module is controlled by the single chip core board to inject a 1% trisodium citrate solution into the target reaction container; According to the preset fusion time, the magnetic rotor is used to stir the solution in the target reaction container to obtain a colloidal gold solution.

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