A system for realizing over-temperature power-off protection of oil temperature detection of a large electromagnetic range

Abstract

This invention provides a system for overheat protection and power-off protection of oil temperature detection in large induction cookers, relating to the field of induction cooker technology. It includes a hardware system and a software system. The hardware system includes a resistance temperature detector (RTD) probe and an AC contactor. The RTD probe is armored against the concave wall of the induction cooker and connected to a temperature controller. The AC contactor is located at the lower end of a circuit breaker, forming a self-locking control circuit. When the pot wall temperature exceeds the set temperature, the AC contactor is disconnected, and the self-locking control circuit is tripped. This invention adds an armored RTD probe to the concave pot wall of the induction cooker connected to the temperature controller, and adds an AC contactor at the lower end of the circuit breaker to achieve the function of disconnecting the AC contactor when the pot wall temperature exceeds the set temperature. When the pot wall temperature exceeds the set temperature, the contactor's self-locking control circuit is tripped. When the temperature returns to normal, the heating function of the induction cooker is restarted via a reset button, ensuring the inherent safety of the induction cooker.

Description

Technical Field

[0001] This invention relates to the field of induction cooker technology, and in particular to a system for realizing over-temperature detection and power-off protection for oil temperature in large induction cookers. Background Technology

[0002] The principle of an induction cooker is electromagnetic induction. It uses alternating current passing through a coil to generate an alternating magnetic field with a constantly changing direction. Eddy currents will appear inside a conductor in the alternating magnetic field (Faraday's law of electromagnetic induction). This is caused by the eddy electric field driving the charge carriers in the conductor (electrons, not iron atoms in the pot) to move. The Joule heating effect of the eddy currents raises the temperature of the conductor, thus achieving heating. Fires caused by human error frequently occur in canteens using large induction cookers. These cookers also pose a fire hazard if personnel leave the area unattended while frying. Currently, industry standard overheat protection for induction cookers typically detects the IGBT core temperature. However, in actual use, the IGBT core temperature does not match the oil temperature, making it difficult for existing overheat protection functions to adapt to the actual oil temperature. This poses a fire hazard, such as oil ignition. Furthermore, existing overheat protection systems lack effective analysis and tracing capabilities, failing to effectively eliminate the cause of overheating and only addressing the symptoms, not the root cause. Therefore, this invention proposes a system for overheat protection of large induction cookers based on oil temperature detection to solve the problems existing in the prior art. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes a system for detecting oil temperature and providing over-temperature power-off protection for large induction cookers. This system accurately detects the temperature of the pot wall in the induction cooker and promptly disconnects the heating circuit, thus achieving the over-temperature protection function of the induction cooker.

[0004] To achieve the objectives of this invention, the following technical solution is provided: A system for overheat protection of oil temperature detection in large induction cookers, comprising a hardware system and a software system. The hardware system includes a resistance temperature detector (RTD) probe and an AC contactor. The RTD probe is armored on the concave wall of the induction cooker and connected to a temperature controller. The lower end of the temperature controller is connected to a circuit breaker. The AC contactor is located at the lower end of the circuit breaker, forming a self-locking control circuit. When the pot wall temperature exceeds the set temperature, the AC contactor is disconnected, and the self-locking control circuit is tripped. When the temperature returns to normal, the AC contactor is reconnected via a reset start button to start the heating function of the induction cooker. The software system includes an analysis system, an authentication system, and a traceability system. The analysis system displays the canteen's cooking space and the location of all induction cookers in a 3D model on the computer, and connects to the temperature controller and AC contactor of each induction cooker to collect real-time temperature and disconnection records, converting them into statistical charts. The authentication system is used to authenticate the operator's identity and record their task before each induction cooker is used, and binds the data collected in the analysis system. The traceability system is used to assess the cause and trace the person in charge when the number of overheat disconnections of a certain induction cooker exceeds a set standard within a specified time period, based on the operator's identity and task during the problematic time period.

[0005] A further improvement is that the hardware system also includes an alarm, which is connected to the temperature controller. When the temperature of the pot wall exceeds the set temperature, the alarm will sound a buzzer.

[0006] A further improvement is that the induction cooker has a built-in detection module, which is used to detect the temperature of the IGBT core. When either the temperature of the IGBT core or the temperature of the pot wall detected by the temperature controller exceeds the set temperature, the self-locking control circuit is disconnected.

[0007] Further improvements are made in the following aspects: The analysis system includes a modeling module, a data acquisition module, and a data aggregation module. The modeling module uses Revit software for modeling, based on the CAD drawings of the canteen space structure, and uses each induction cooker as a partition standard to perform regional modeling. Then, the overall model is generated from the models of each region and displayed on the computer. The actual usable information of the space and the location information of each induction cooker are input into the model, realizing arbitrary scaling, multi-angle viewing, and internal roaming functions to display all information of the canteen space. Each induction cooker partition has a built-in data packet storage cell to store all data and timestamps belonging to that induction cooker.

[0008] Further improvements include: the acquisition module is used to connect to the temperature controller and AC contactor of each induction cooker, acquire the real-time temperature of each induction cooker and record the disconnection, and distribute the data to the data packet storage cell of each induction cooker. The acquisition module provides a manual setting function to the computer for manually adjusting the acquisition time interval.

[0009] Further improvements are made in that: the aggregation module includes a statistics module and an output module. The statistics module is connected to the data packet storage cell of each induction cooker, converts the collected induction cooker temperature data into a line graph, and marks the disconnection records on the time column of the line graph. Simultaneously, when the number of overheat disconnections of a certain induction cooker exceeds the set number standard within a specified time period, the induction cooker is marked as an important one.

[0010] A further improvement is that the output module is connected to the computer's monitor, and the output module is used to output the line graph generated by the statistics module to the monitor for display. When an induction cooker marked with a key feature appears, the output module will flash a warning on the monitor. The output module also has a mobile phone communication module, and the mobile phone communication module is wirelessly connected to the manager's mobile phone APP via a 5G network. When an induction cooker marked with a key feature appears, the alarm information will be sent to the supervisor's mobile phone APP.

[0011] Further improvements include: the authentication system includes an authentication module and a work order module. The authentication module includes an operator database and an identification system. The operator database stores the identity information of all operators. The identification system is a face recognition camera located at the front of the workbench of each induction cooker. During operation, the system identifies the operator's face, compares it with the data in the operator database, determines the corresponding identity, and binds the operator's identity with the corresponding induction cooker during that time period, recording it in the data packet storage cell of that induction cooker, providing a data query function in the model.

[0012] A further improvement is that the work order module is used to generate a work order based on the canteen's cooking needs for the day, after the operator's identity is confirmed by the identification system, according to the operator's identity or job category. This work order cooking task is bound to the operator and the current time period, recorded in the data packet storage cell of the induction cooker, and the work order cooking task is sent to the operator's mobile APP.

[0013] Further improvements are made in the following aspects: The traceability system includes an evaluation module and a suggestion module. The evaluation module is used to analyze the time of each overheating power outage when a key marked induction cooker is found, trace the operator and work order cooking task for each overheating power outage period, and combine this with an internet search to determine if the current work order cooking task is the cause of the overheating power outage. It then sends an operation survey for the corresponding time period to the operator's mobile APP, evaluates the impact of the task and operation, and generates an evaluation log. The suggestion module is used to collect the number of overheating power outages under each operator's identity data, and when the number of overheating power outages for an operator exceeds a set standard, it provides operation rectification suggestions to the operator's recovery APP and the manager's recovery APP.

[0014] The beneficial effects of this invention are as follows: 1. This invention adds an armored thermal resistor temperature detection probe to the concave pot wall of the induction cooker and connects it to a temperature controller. An AC contactor is added to the lower end of the circuit breaker to realize the function of disconnecting the AC contactor when the pot wall temperature exceeds the set temperature. When the pot wall temperature exceeds the set temperature, the contactor self-locking control circuit is tripped. When the temperature returns to normal, the heating function of the induction cooker is restarted by the reset start button, ensuring the inherent safety of the induction cooker. In summary, the invention accurately detects the pot wall temperature of the induction cooker and disconnects the heating circuit in time, realizing the over-temperature protection function of the induction cooker.

[0015] 2. Before each induction cooker is used, the present invention verifies the identity of the operator and records the task. If the number of times an induction cooker disconnects due to overheating exceeds the set standard within a specified time period, the cause is assessed by combining the operator's identity and task during the problematic time period. The source is traced back to the operator and the cooking task of each overheating power outage period. It is assessed whether the current cooking task of the work order is the cause of the overheating power outage. The operation of the operator in the corresponding time period is investigated, and the impact of the task and operation is assessed to minimize the occurrence of overheating power outages.

[0016] 3. This invention displays the canteen cooking space and the location of all induction cookers in a three-dimensional model on a computer, and connects the temperature controller and AC contactor of each induction cooker to collect real-time temperature and disconnection records to form a statistical chart. This allows for a clear view of the operation of each induction cooker in the model, and also allows for the judgment of parameter changes of the induction cookers based on the statistical chart, providing convenience for subsequent maintenance and improving protection performance. Attached Figure Description

[0017] Figure 1 This is a diagram illustrating the composition of the present invention; Figure 2 This is a schematic diagram of the over-temperature power-off protection control circuit of the present invention. Detailed Implementation

[0018] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0019] Example 1 according to Figure 1 , 2As shown, this embodiment proposes a system for overheat protection of oil temperature detection in large induction cookers, including a hardware system and a software system. The hardware system includes a resistance temperature detector (RTD) probe and an AC contactor. The RTD probe is armored onto the concave wall of the induction cooker and connected to a temperature controller. The lower end of the temperature controller is connected to a circuit breaker. The AC contactor is located at the lower end of the circuit breaker, forming a self-locking control circuit. When the pot wall temperature exceeds the set temperature, the AC contactor is disconnected, tripping the self-locking control circuit. When the temperature returns to normal, the AC contactor is reconnected via a reset start button, activating the induction cooker's heating function. During use, the system... An armored thermal resistor temperature detection probe is added to the concave pot wall of the induction cooker and connected to a temperature controller. An AC contactor is added to the lower end of the circuit breaker to enable the AC contactor to disconnect when the pot wall temperature exceeds the set temperature. When the pot wall temperature exceeds the set temperature, the contactor self-locking control circuit is tripped. When the temperature returns to normal, the heating function of the induction cooker is restarted by the reset start button, ensuring the inherent safety of the induction cooker. In summary, the induction cooker accurately detects the pot wall temperature and disconnects the heating circuit in time, realizing the over-temperature protection function of the induction cooker. After verification, the field use effect is good, accurately measuring the pot wall temperature and realizing the over-temperature power-off function, thus ensuring the inherent safety of the induction cooker. The software system includes an analysis system, an authentication system, and a traceability system. The analysis system displays the canteen's cooking space and the location of all induction cookers in a 3D model on the computer, connecting to the temperature controller and AC contactor of each cooker to collect real-time temperature and disconnection records, which are then converted into statistical charts. The authentication system verifies the operator's identity and records their tasks before each cooker is used, linking this data to the analysis system. The traceability system, when a cooker's overheating disconnection frequency exceeds a set standard within a specified time period, assesses the cause and identifies the responsible party based on the operator's identity and tasks during that period. It evaluates the impact of tasks and operations to minimize overheating disconnections.

[0020] The analysis system includes a modeling module, a data acquisition module, and a data aggregation module. The modeling module uses Revit software for modeling, based on the CAD drawings of the canteen space. Each induction cooker serves as a partition standard, and modeling is performed in separate areas. The overall model is then generated from the models of each area and displayed on the computer. Actual spatial information and the location information of each induction cooker are input into the model, enabling arbitrary scaling, multi-angle viewing, and internal navigation functions to display all information about the canteen space. Each induction cooker partition has a built-in data packet storage cell to store all data and timestamps belonging to that cooker. Revit generally refers to a suite of software from Autodesk. The Revit suite is built for Building Information Modeling (BIM) and is used to design, build, and maintain higher-quality, more energy-efficient spatial models. The data acquisition module connects to the temperature controller and AC contactor of each induction cooker, acquiring real-time temperature and disconnection records for each cooker. The data is then distributed and transmitted to the data packet storage cell of each cooker. The acquisition module provides a manual setting function in the computer for manually adjusting the data acquisition time interval. The aggregation module includes a statistics module and an output module. The statistics module is connected to the data packet storage cell of each induction cooker, converting the collected induction cooker temperature data into a line graph, and marking disconnection records on the time column of the line graph. Simultaneously, when the number of overheat disconnections of a certain induction cooker exceeds a set standard within a specified time period, that induction cooker is highlighted. In use, the canteen cooking space and the location of all induction cookers are displayed in a 3D model on the computer, and the temperature controller and AC contactor of each induction cooker are connected to collect real-time temperature and disconnection records to form a statistical graph. This allows for a clear view of the operation of each induction cooker in the model, and also allows for the judgment of parameter changes of the induction cookers based on the statistical graph, providing convenience for subsequent maintenance.

[0021] The output module connects to the computer's monitor and outputs the line graph generated by the statistics module to the monitor for display. When a highlighted induction cooker appears, a flashing warning appears on the monitor. The output module also includes a mobile communication module, which wirelessly connects to the manager's mobile app via a 5G network. When a highlighted induction cooker appears, an alarm message is sent to the supervisor's mobile app. The mobile communication module (Communication Module) is a connector specifically designed for transmitting different signals to mobile phones in the field of industrial automation control. It includes conversion between RS-232, RS-422 / 485 signals and other communication networks to ensure compatibility of serial messages between drive, control, and actuation components in the system architecture.

[0022] The authentication system includes an authentication module and a work order module. The authentication module comprises an operator database and a recognition system. The operator database stores the identity information of all operators. The recognition system uses facial recognition cameras located at the front of each induction cooker's workbench. During operation, the system recognizes the operator's face, compares it with the data in the operator database to determine their identity, and binds the operator's identity to the corresponding induction cooker for that time period, recording it in the induction cooker's data packet storage, providing data query functionality within the model. The work order module generates a work order based on the day's canteen cooking needs, after the operator's identity is confirmed by the recognition system, according to the operator's identity or job category. This work order cooking task is bound to the operator and the current time period, recorded in the induction cooker's data packet storage, and then sent to the operator's mobile app. By authenticating and recording the identities of operators and binding each operator to the induction cooker they use, down to the cooking task, it becomes easier to analyze the problem type and trace the responsible operator when an induction cooker experiences an overheating and power-off issue. This allows for clear and precise problem handling and improves problem-solving efficiency.

[0023] The traceability system includes an evaluation module and a suggestion module. The evaluation module analyzes the time of each overheating power outage when a marked induction cooker is detected, tracing the operator and cooking task of each overheating power outage period. It also searches the internet to determine if the current cooking task is the cause of the overheating power outage, sends an operation survey for the corresponding time period to the operator's mobile app, evaluates the impact of the task and operation, and generates an evaluation log. The suggestion module collects the number of overheating power outages under each operator's identity data, and when the number of overheating power outages for an operator exceeds a set standard, it provides operational rectification suggestions to the operator's and manager's recovery apps. Before each induction cooker is used, the operator's identity is verified and their task is recorded. If the number of times an induction cooker disconnects due to overheating exceeds the set standard within a specified time period, the cause is assessed by combining the operator's identity and task during the problematic time period. The source is traced back to the operator and the cooking task of each overheating power outage period. It is assessed whether the current cooking task of the work order is the cause of the overheating power outage. The operation of the operator during the corresponding time period is investigated, and the impact of the task and operation is assessed to minimize the occurrence of overheating power outages.

[0024] Example 2 according to Figure 1 , 2As shown, this embodiment proposes a system for overheat protection of oil temperature detection in large induction cookers, including a hardware system and a software system. The hardware system includes a resistance temperature detector (RTD) probe and an AC contactor. The RTD probe is armored onto the concave wall of the induction cooker and connected to a temperature controller. The AC contactor is located at the lower end of a circuit breaker, forming a self-locking control circuit. When the pot wall temperature exceeds the set temperature, the AC contactor is disconnected, tripping the self-locking control circuit. When the temperature returns to normal, the AC contactor is reconnected via a reset button, activating the induction cooker's heating function. During use, the oil temperature is detected on the concave wall of the induction cooker... An armored resistance temperature detector is added and connected to a temperature controller. An AC contactor is added to the lower terminal of the circuit breaker to enable the AC contactor to trip when the pot wall temperature exceeds the set temperature. When the pot wall temperature exceeds the set temperature, the contactor's self-locking control circuit is tripped. When the temperature returns to normal, the induction cooker's heating function is restarted via the reset start button, ensuring the inherent safety of the induction cooker. In summary, the accurate detection of the induction cooker's pot wall temperature and timely disconnection of the heating circuit enable the induction cooker's over-temperature protection function. Verification has shown that the field use effect is good, accurately measuring the pot wall temperature and enabling the over-temperature power-off function, thus ensuring the inherent safety of the induction cooker. The software system includes an analysis system, an authentication system, and a traceability system. The analysis system displays the canteen's cooking space and the location of all induction cookers in a 3D model on the computer, connecting to the temperature controller and AC contactor of each cooker to collect real-time temperature and disconnection records, which are then converted into statistical charts. The authentication system verifies the operator's identity and records their tasks before each cooker is used, linking this data to the analysis system. The traceability system, when a cooker's overheating disconnection frequency exceeds a set standard within a specified time period, assesses the cause and identifies the responsible party based on the operator's identity and tasks during that period. It evaluates the impact of tasks and operations to minimize overheating disconnections.

[0025] The hardware system also includes an alarm connected to the temperature controller. When the pot wall temperature exceeds the set temperature, the alarm sounds. In use, the system can detect the pot wall temperature, output an over-temperature alarm, disconnect the AC contactor's self-locking control circuit, and ultimately achieve the safety function of power-off in case of over-temperature.

[0026] The induction cooker has a built-in detection module that detects the temperature of the IGBT core. If either the IGBT core temperature or the pot wall temperature detected by the temperature controller exceeds a set temperature, the self-locking control circuit is disconnected. This combination of two over-temperature detection methods effectively disconnects the self-locking control circuit if either exceeds the set temperature, thus improving protection performance.

[0027] The analysis system includes a modeling module, a data acquisition module, and a data aggregation module. The modeling module uses Revit software for modeling, based on the CAD drawings of the canteen space. Each induction cooker serves as a partition standard, and modeling is performed in separate areas. The overall model is then generated from the models of each area and displayed on the computer. Actual spatial information and the location information of each induction cooker are input into the model, enabling arbitrary scaling, multi-angle viewing, and internal navigation functions to display all information about the canteen space. Each induction cooker partition has a built-in data packet storage cell to store all data and timestamps belonging to that cooker. Revit generally refers to a suite of software from Autodesk. The Revit suite is built for Building Information Modeling (BIM) and is used to design, build, and maintain higher-quality, more energy-efficient spatial models. The data acquisition module connects to the temperature controller and AC contactor of each induction cooker, acquiring real-time temperature and disconnection records for each cooker. The data is then distributed and transmitted to the data packet storage cell of each cooker. The acquisition module provides a manual setting function in the computer for manually adjusting the data acquisition time interval. The aggregation module includes a statistics module and an output module. The statistics module is connected to the data packet storage cell of each induction cooker, converting the collected induction cooker temperature data into a line graph, and marking disconnection records on the time column of the line graph. Simultaneously, when the number of overheat disconnections of a certain induction cooker exceeds a set standard within a specified time period, that induction cooker is highlighted. In use, the canteen cooking space and the location of all induction cookers are displayed in a 3D model on the computer, and the temperature controller and AC contactor of each induction cooker are connected to collect real-time temperature and disconnection records to form a statistical graph. This allows for a clear view of the operation of each induction cooker in the model, and also allows for the judgment of parameter changes of the induction cookers based on the statistical graph, providing convenience for subsequent maintenance.

[0028] The output module connects to the computer's monitor and outputs the line graph generated by the statistics module to the monitor for display. When a highlighted induction cooker appears, a flashing warning appears on the monitor. The output module also includes a mobile communication module, which wirelessly connects to the manager's mobile app via a 5G network. When a highlighted induction cooker appears, an alarm message is sent to the supervisor's mobile app. The mobile communication module (Communication Module) is a connector specifically designed for transmitting different signals to mobile phones in the field of industrial automation control. It includes conversion between RS-232, RS-422 / 485 signals and other communication networks to ensure compatibility of serial messages between drive, control, and actuation components in the system architecture.

[0029] This system for detecting oil temperature and providing over-temperature protection for large induction cookers involves adding a sheathed thermal resistor temperature detection probe to the concave pot wall of the induction cooker and connecting it to a temperature controller. An AC contactor is added to the lower end of the circuit breaker to disconnect the contactor when the pot wall temperature exceeds the set temperature. When the pot wall temperature exceeds the set temperature, the contactor's self-locking control circuit trips. Once the temperature returns to normal, the induction cooker's heating function is restarted via a reset button, ensuring inherent safety during use. In summary, the system accurately detects the pot wall temperature and promptly disconnects the heating circuit, achieving over-temperature protection. Verification in the field has shown good performance, accurately measuring the pot wall temperature and providing over-temperature power-off functionality, ensuring inherent safety during use and preventing the ignition of cooking oil (the flash point of cooking oil is around 257℃, and the over-temperature alarm temperature is set to 180℃). Furthermore, this invention verifies the operator's identity and records their tasks before each induction cooker is used. If, within a specified time period, the number of overheat disconnections of a particular induction cooker exceeds a set standard, the cause is assessed by combining the operator's identity and tasks during the problematic time period. This traces the operator and work order cooking tasks for each overheat disconnection period, evaluating whether the current work order cooking task is the cause of the overheat disconnection. The operation of the operator during the corresponding time period is investigated, and the impact of the task and operation is assessed to minimize the occurrence of overheat disconnections. Simultaneously, this invention displays the canteen cooking space and the location of all induction cookers in a 3D model on a computer, connecting each induction cooker's temperature controller and AC contactor to collect real-time temperature and disconnection records, forming statistical charts. This allows for a clear view of the operating status of each induction cooker in the model, and the statistical charts can be used to determine parameter changes, facilitating subsequent maintenance and improving protection performance.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A system for realizing over-temperature detection and power-off protection for oil temperature in large induction cookers, comprising a hardware system and a software system, characterized in that: The hardware system includes a resistance temperature detector (RTD) probe and an AC contactor. The RTD probe is armored on the concave pot wall of the induction cooker and connected to a temperature controller. The lower end of the temperature controller is connected to a circuit breaker. The AC contactor is located at the lower end of the circuit breaker, forming a self-locking control circuit. When the pot wall temperature exceeds the set temperature, the AC contactor is disconnected, and the self-locking control circuit is tripped. When the temperature returns to normal, the AC contactor is reconnected via the reset start button to start the heating function of the induction cooker. The software system includes an analysis system, an authentication system, and a traceability system. The analysis system displays the canteen's cooking space and the location of all induction cookers in a 3D model on the computer, and connects to the temperature controller and AC contactor of each induction cooker to collect real-time temperature and disconnection records, converting them into statistical charts. The authentication system is used to authenticate the operator's identity and record their task before each induction cooker is used, and binds the data collected in the analysis system. The traceability system is used to assess the cause and trace the person in charge when the number of overheat disconnections of a certain induction cooker exceeds a set standard within a specified time period, based on the operator's identity and task during the problematic time period.

2. The system for realizing over-temperature detection and power-off protection of oil temperature in a large induction cooker according to claim 1, characterized in that: The hardware system also includes an alarm connected to the temperature controller. When the temperature of the pot wall exceeds the set temperature, the alarm will sound a buzzer.

3. The system for realizing over-temperature detection and power-off protection of oil temperature in a large induction cooker according to claim 2, characterized in that: The induction cooker has a built-in detection module, which is used to detect the temperature of the IGBT core. When either the temperature of the IGBT core or the temperature of the pot wall detected by the temperature controller exceeds the set temperature, the self-locking control circuit is disconnected.

4. The system for realizing over-temperature detection and power-off protection of oil temperature in large induction cookers according to claim 1, characterized in that: The analysis system includes a modeling module, a data acquisition module, and a data aggregation module. The modeling module uses Revit software for modeling, based on the CAD drawings of the canteen space, and uses each induction cooker as a partition standard to perform regional modeling. Then, the models of each region generate an overall model and display it on the computer. The actual usable information of the space and the location information of each induction cooker are input into the model, enabling arbitrary scaling, multi-angle viewing, and internal roaming functions to display all information of the canteen space. Each induction cooker partition has a built-in data packet storage cell to store all data and timestamps belonging to that induction cooker.

5. A system for realizing over-temperature detection and power-off protection of oil temperature in large induction cookers according to claim 4, characterized in that: The acquisition module is used to connect to the temperature controller and AC contactor of each induction cooker, acquire the real-time temperature of each induction cooker and record the disconnection, and distribute the data to the data packet storage cell of each induction cooker. The acquisition module provides a manual setting function to the computer for manually adjusting the acquisition time interval.

6. A system for realizing over-temperature detection and power-off protection for oil temperature in large induction cookers according to claim 5, characterized in that: The aggregation module includes a statistics module and an output module. The statistics module is connected to the data packet storage cell of each induction cooker, converts the collected induction cooker temperature data into a line graph, and marks the disconnection records on the time column of the line graph. Simultaneously, when the number of overheat disconnections of a certain induction cooker exceeds the set number standard within a specified time period, the induction cooker is marked as an important one.

7. A system for realizing over-temperature detection and power-off protection for oil temperature in large induction cookers according to claim 6, characterized in that: The output module is connected to the computer's monitor and is used to output the line graph generated by the statistics module to the monitor for display. When an induction cooker marked with a special feature appears, the output module will flash a warning on the monitor. The output module also has a mobile communication module, which is wirelessly connected to the manager's mobile APP via a 5G network. When an induction cooker marked with a special feature appears, the alarm information will be sent to the supervisor's mobile APP.

8. A system for realizing over-temperature detection and power-off protection for oil temperature in large induction cookers according to claim 7, characterized in that: The authentication system includes an authentication module and a work order module. The authentication module includes an operator database and an identification system. The operator database stores the identity information of all operators. The identification system is a face recognition camera located at the front of the workbench of each induction cooker. During operation, the system identifies the operator's face, compares it with the data in the operator database, determines the corresponding identity, and binds the operator's identity with the corresponding induction cooker during that time period, recording it in the data packet storage cell of that induction cooker, providing a data query function in the model.

9. A system for realizing over-temperature detection and power-off protection of oil temperature in a large induction cooker according to claim 8, characterized in that: The work order module is used to generate a work order based on the canteen's cooking needs for the day, after the operator's identity is confirmed by the identification system, according to the operator's identity or job category. The work order cooking task is then bound to the operator and the current time period, recorded in the data packet storage cell of the induction cooker, and sent to the operator's mobile APP.

10. A system for realizing over-temperature detection and power-off protection for oil temperature in large induction cookers according to claim 9, characterized in that: The traceability system includes an evaluation module and a suggestion module. The evaluation module analyzes the time of each overheating power outage when a marked induction cooker is detected, tracing the operator and cooking task of each overheating power outage period. It also searches the internet to determine if the current cooking task is the cause of the overheating power outage, sends an operation survey for the corresponding time period to the operator's mobile app, evaluates the impact of the task and operation, and generates an evaluation log. The suggestion module collects the number of overheating power outages under each operator's identity data, and when the number of overheating power outages for an operator exceeds a set standard, it provides operational rectification suggestions to the operator's and manager's recovery apps.

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