Smelting furnace temperature measurement system and method

Abstract

The invention discloses a smelting furnace temperature measurement system which comprises at least one thermodetector handheld end, at least one LoRa base station and an intelligent temperature control center. Wherein the thermodetector handheld terminal and the LoRa base station carry out wireless data transmission through LoRa communication; and the LoRa base station and the intelligent temperature control center carry out wired data transmission through an RS485 interface. According to the system, the precision, the stability and the intelligent level of temperature measurement of the smelting furnace are remarkably improved, the operation difficulty is reduced, the integrity and the safety of data management are enhanced, and a powerful technical guarantee is provided for quality control and production efficiency improvement of the casting industry.

Description

Technical Field

[0001] The present invention relates to the field of furnace temperature measurement, and more particularly to a furnace temperature measurement system and method. Background Art

[0002] As a basic pillar industry in my country's national economy, the foundry industry has increasingly stringent requirements for product quality and cost control. In the casting process, the quality control of the smelting and pouring links is directly related to the performance and reliability of the final casting. However, the existing furnace temperature measurement technology has obvious shortcomings and limitations in practical applications.

[0003] Traditional furnace temperature measurement methods mostly rely on wired temperature measuring guns or simple wireless temperature measuring devices. These devices have many defects in temperature measurement accuracy, data transmission stability, intelligent reminder function and data management. Although wired temperature measuring guns guarantee the stability of data transmission to a certain extent, they are inconvenient to operate and are easily restricted by cable length and layout. The cables are also easily damaged, increasing maintenance costs and safety hazards. Although simple wireless temperature measuring devices solve the problem of cable restraint, wireless communication is susceptible to interference in complex industrial environments, resulting in unstable data transmission and possible errors or loss of temperature measurement data.

[0004] In addition, the existing temperature measurement equipment is relatively simple in function design and lacks the necessary intelligent reminder and data management functions. During the temperature measurement process, if the temperature exceeds the set range, it is often difficult for the operator to detect and handle it in time, increasing the safety risks in the production process. At the same time, since the temperature measurement data cannot be displayed and stored in real time, the temperature measurement process cannot form a traceable record, which is not conducive to subsequent quality analysis and process optimization.

[0005] More importantly, existing temperature measurement equipment also has obvious deficiencies in terms of compatibility, power consumption, and ease of operation. Different foundries may use different types of thermocouples, but existing temperature measurement equipment is often unable to adapt to a variety of thermocouple graduations, limiting the versatility and flexibility of the equipment. At the same time, some temperature measurement equipment still consumes a lot of power when in standby or off mode, which increases the cost of use and reduces the endurance of the equipment. Problems such as the unintuitive operating interface and the lack of voice reminder function also increase the difficulty of use for operators, requiring a lot of time for training and adaptation.

[0006] Therefore, how to design a furnace temperature measurement system to significantly improve the accuracy, stability and intelligence level of furnace temperature measurement and achieve quality control and production efficiency improvement in the foundry industry is an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0007] In view of this, the present invention provides a furnace temperature measurement system to solve the deficiencies of existing temperature measurement technologies in terms of accuracy, stability, intelligence and data management, and to improve the production efficiency and product quality of the foundry industry.

[0008] In order to achieve the above object, the present invention adopts the following technical solution:

[0009] In a first aspect, the present invention provides a furnace temperature measurement system, comprising: at least one thermometer handheld terminal, at least one LoRa base station and an intelligent temperature control center; wherein:

[0010] The thermometer handheld terminal and the LoRa base station perform wireless data transmission via LoRa communication;

[0011] The LoRa base station and the intelligent temperature control center perform wired data transmission via the RS485 interface.

[0012] Preferably, the thermometer handheld terminal includes: a thermometer circuit board, an internal bracket, a selection button, a stainless steel housing, a first wireless communication antenna, a stainless steel gun barrel, a charging port, a confirmation button and a liquid crystal display.

[0013] Preferably, the thermometer circuit board includes: a thermometer MCU module, a thermometer storage module, a temperature measurement module, a voice module, a thermometer LoRa communication module, a liquid crystal display module, a button module, a power charging management module, a battery power supply module and a power step-down module;

[0014] The thermometer MCU module is respectively connected to the thermometer storage module, the temperature measurement module, the voice module, the thermometer LoRa communication module, the liquid crystal display module, the button module, the power charging management module, the battery power supply module and the power supply step-down module for corresponding control;

[0015] The temperature measuring instrument storage module is used to store historical temperature measurement data and related configuration files;

[0016] The temperature measurement module is used to measure the furnace temperature in combination with the thermocouple built into the stainless steel gun barrel;

[0017] The voice module is used for voice reminder and user operation prompt;

[0018] The thermometer LoRa communication module is used to combine with the first wireless communication antenna to perform wireless communication with the LoRa base station;

[0019] The LCD display module is used to display temperature measurement data, location number, gun number, furnace number, battery power, and wireless signal strength information in combination with the LCD display;

[0020] The button module is used to adjust the temperature measuring instrument position number and the gun number in combination with the selection button and the confirmation button;

[0021] The power charging management module, the battery power supply module and the power step-down module are connected in sequence and are used to combine with a rechargeable battery and a power adapter to supply power to other modules.

[0022] Preferably, the LoRa base station includes: a base station circuit board, a second wireless communication antenna, an aluminum alloy housing, a switch button, a terminal interface and an indicator light.

[0023] Preferably, the base station circuit board includes: a base station MCU module, a base station LoRa communication module, a base station storage module, an RS485 module, an indicator light module and a power supply module;

[0024] The base station MCU module is respectively connected to the base station LoRa communication module, the base station storage module, the RS485 module and the power module for corresponding control;

[0025] The base station LoRa communication module is used to combine with the second wireless communication antenna to perform wireless communication with the thermometer handheld terminal;

[0026] The base station storage module is used to store corresponding data;

[0027] The RS485 module is used for data communication with the intelligent temperature control center;

[0028] The indicator light module is used to display the working status and communication status of the LoRa base station in combination with the indicator light;

[0029] The power module is used to combine with a rechargeable battery and a power adapter to supply power to other modules.

[0030] Preferably, the intelligent temperature control center includes: a data processing module, a communication interface module, a process parameter sending module, a user interaction interface, a database module and a security management module;

[0031] The data processing module is respectively connected to the communication interface module, the process parameter sending module, the user interaction interface, the database module and the security management module, and is used to parse, store and analyze the furnace temperature data and generate reports or charts;

[0032] The communication interface module is used for data communication with the LoRa base station;

[0033] The process parameter sending module is used to send the process temperature range and other configuration information through the communication interface module according to the unique product code of the thermometer handheld terminal;

[0034] The user interaction interface is used to provide a graphical interface for managers to display the furnace's real-time temperature measurement data, historical records, and abnormal alarm information;

[0035] The database module is used to store furnace temperature data and support data query and statistical analysis;

[0036] The security management module is used for security management of data transmission and access permission control.

[0037] In a second aspect, the present invention provides a furnace temperature measurement method, comprising the following steps:

[0038] The intelligent temperature control center sends the process temperature range and other configuration information to the corresponding LoRa base station;

[0039] The LoRa base station forwards the process temperature range and other configuration information to the corresponding thermometer handheld terminal;

[0040] The handheld terminal of the thermometer performs a self-test when powered on, detects the thermocouple insertion status and ambient temperature, and displays the self-test results with voice reminders;

[0041] The handheld end of the thermometer adjusts the position number and gun number by pressing buttons;

[0042] The handheld end of the temperature measuring instrument inserts the thermocouple into a preset depth below the liquid level of the molten metal in the furnace to collect temperature data;

[0043] The handheld terminal of the thermometer processes the temperature measurement data, calculates the actual temperature measurement results and displays them, and reminds you of the temperature measurement results and whether they exceed the process range through voice;

[0044] The temperature measurement data and time tags are stored in the thermometer handheld terminal and uploaded to the corresponding LoRa base station;

[0045] The LoRa base station receives the temperature measurement data and uploads it to the intelligent temperature control center;

[0046] The intelligent temperature control center processes and analyzes the uploaded data, generates reports or charts, and displays real-time temperature measurement data, historical records, and abnormal alarm information.

[0047] It can be seen from the above technical solution that compared with the prior art, the technical solution of the present invention has the following advantages:

[0048] Beneficial effects:

[0049] The furnace temperature measurement system integrates advanced LoRa wireless communication technology and RS485 wired communication to achieve high-precision, real-time and stable temperature measurement data transmission. The wireless data transmission between the thermometer handheld terminal and the LoRa base station ensures the long-distance transmission and low power consumption of data, which is suitable for complex industrial environments. The RS485 wired communication between the LoRa base station and the intelligent temperature control center ensures the efficiency and reliability of data transmission. It significantly improves the accuracy, stability and intelligence level of furnace temperature measurement, reduces the difficulty of operation, and improves the quality control and production efficiency of the foundry industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] 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 or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0051] Figure 1 A framework diagram of a furnace temperature measurement system provided by an embodiment of the present invention;

[0052] Figure 2 A schematic diagram of the structure of a handheld terminal of a thermometer provided in an embodiment of the present invention;

[0053] Figure 3 A front view of a handheld terminal of a thermometer provided in an embodiment of the present invention;

[0054] Figure 4 A rear view of a handheld terminal of a thermometer provided in an embodiment of the present invention;

[0055] Figure 5 A schematic diagram of a thermometer circuit board provided in an embodiment of the present invention;

[0056] Figure 6 A schematic diagram of the structure of a LoRa base station provided in an embodiment of the present invention;

[0057] Figure 7 A base station circuit board framework diagram provided by an embodiment of the present invention;

[0058] Figure 8 This is a framework diagram of the intelligent temperature control center provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0059] 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.

[0060] Embodiment 1;

[0061] like Figure 1 As shown, this embodiment provides a furnace temperature measurement system, including: at least one thermometer handheld terminal 1, at least one LoRa base station 2 and an intelligent temperature control center 3; wherein,

[0062] The thermometer handheld terminal 1 and the LoRa base station 2 perform wireless data transmission via LoRa communication;

[0063] The LoRa base station 2 and the intelligent temperature control center 3 perform wired data transmission via the RS485 interface.

[0064] The system significantly improves the accuracy, stability and intelligence of furnace temperature measurement, reduces the difficulty of operation, enhances the integrity and security of data management, and provides strong technical support for quality control and production efficiency improvement in the foundry industry.

[0065] The following is a further detailed description of the various components and related technical features of the above-mentioned furnace temperature measurement system:

[0066] like Figure 2 As shown, the thermometer handheld terminal 1 includes: an intelligent temperature control center 11, an internal bracket 12, a selection button 13, a stainless steel shell 14, a first wireless communication antenna 15, and a stainless steel gun rod 16;

[0067] like Figure 3 and Figure 4 As shown, the thermometer handheld terminal 1 also includes: a charging port 17 , a confirmation button 18 and a liquid crystal display screen 19 .

[0068] like Figure 5 As shown, the thermometer circuit board 11 includes a thermometer MCU module 111, a thermometer storage module 112, a temperature measurement module 113, a voice module 114, a thermometer LoRa communication module 115, a liquid crystal display module 116, a button module 117, a power charging management module 118, a battery power supply module 119 and a power buck module 1110;

[0069] The thermometer MCU module 111 is respectively connected to the thermometer storage module 112, the temperature measurement module 113, the voice module 114, the thermometer LoRa communication module 115, the LCD display module 116, the button module 117, the power charging management module 118, the battery power supply module 119 and the power step-down module 1110; it adopts a 32-bit Cortex-M0+ microprocessor to coordinate the work of each module, process the temperature measurement data, and control the color screen display, storage data, button response, voice prompt and LoRa communication, so as to realize the efficient operation and intelligent management of the thermometer.

[0070] The thermometer storage module 112 is used to store historical temperature measurement data and related configuration files; it adopts IIC serial communication mode to electrically connect the EEPROM chip and the MCU module, stably stores historical temperature measurement data and related configuration files, ensures the security and traceability of the data, and provides solid data support for quality analysis and process optimization.

[0071] The temperature measurement module 113 is used to measure the furnace temperature in combination with the thermocouple built into the stainless steel gun barrel; it integrates a professional industrial-grade temperature measurement chip (such as MAX31855) and combines a dual cold-end compensation design (using a four-wire RTD and a diode ideal factor balanced ambient temperature measurement algorithm) to accurately measure the furnace temperature, effectively suppress ambient temperature interference, and achieve full-scale high-precision temperature measurement (±2°C error range) to ensure stable casting quality.

[0072] The voice module 114 is used for voice reminders and user operation prompts; it adopts an industrial-grade voice driver chip (such as WTN6) to provide voice prompts according to the temperature measurement process nodes, guide the operator to standardize operations, and issue an alarm when the temperature is abnormal, thereby improving production safety and efficiency.

[0073] The thermometer LoRa communication module 115 is used to combine with the first wireless communication antenna to perform wireless communication with the LoRa base station; it adopts the LoRa wireless communication technology based on Semtech SX1276 / 77 / 78 to achieve long-distance, low-power data transmission between the thermometer and the LoRa base station, supports multiple handheld terminals to upload data at the same time, and ensures the reliability and real-time performance of data transmission.

[0074] The LCD display module 116 is used to display temperature measurement data, position number, gun number, furnace number, battery power, and wireless signal strength information in combination with the LCD display; it adopts the ST7789V display driver chip, combined with a high-resolution color display, to intuitively display temperature measurement data, position number, gun number, furnace number, battery power, and wireless signal strength information, thereby improving operational convenience and data readability, and at the same time warning of over-temperature conditions through color changes.

[0075] The button module 117 is used to adjust the thermometer position number and the gun number in combination with the selection button and the confirmation button; it electrically connects the contact button to the MCU module through the I / O port line to achieve convenient adjustment of the thermometer position number and the gun number, and supports temperature calibration operations, thereby enhancing the user interaction experience and ensuring the flexibility and accuracy of the temperature measurement operation.

[0076] The power charging management module 118, the battery power supply module 119 and the power supply step-down module 1110 are connected in sequence, and are used to combine a rechargeable battery and a power adapter to power other modules. Specifically, the power charging management module adopts a high-performance lithium battery charging chip TP4056, intelligently manages the battery charging process, and adopts a safe and efficient charging strategy to protect the battery from damage, extend the battery life, and ensure the continuous and stable operation of the thermometer. The battery power supply module implements a one-button power on and off function through discrete devices (such as MOS tubes, resistors, capacitors, etc.), optimizes power management, improves energy utilization efficiency, achieves zero power consumption when the device is turned off, and reduces energy consumption and environmental pollution. The power supply step-down module uses an ldo chip to stably step down the battery voltage to DC3.3V, providing a stable and reliable power supply for the MCU module, storage module, temperature measurement module, color screen module, etc., to ensure that the thermometer can still operate normally in a complex environment.

[0077] The handheld terminal of the thermometer integrates multifunctional modules such as intelligent temperature control center, communication, display, storage, voice prompt and power management. It uses a high-performance microprocessor to coordinate the work of each module, realizing high-precision temperature measurement, long-distance low-power communication, data visualization and intelligent management. It uses professional industrial-grade temperature measurement chips and dual cold-end compensation design to ensure high-precision temperature measurement over the entire range; combined with LoRa wireless communication technology, it realizes long-distance, low-power data transmission; uses a high-resolution color display and an industrial-grade voice driver chip to improve operational convenience and data readability; at the same time, the high-performance battery charging management and power step-down module provide the system with a stable and reliable power supply, ensuring that the thermometer continues to operate stably in complex environments.

[0078] like Figure 6 As shown, the LoRa base station 2 includes a base station circuit board 21, a second wireless communication antenna 22, an aluminum alloy housing 23, a switch button 24, a terminal interface 25 and an indicator light 26.

[0079] like Figure 7 As shown, the base station circuit board 21 includes: a base station MCU module 211, a base station LoRa communication module 212, a base station storage module 213, an RS485 module 214, an indicator light module 215 and a power supply module 216;

[0080] The base station MCU module 211 is respectively connected to the base station LoRa communication module 212, the base station storage module 213, the RS485 module 214 and the power module 216; it adopts a 32-bit Cortex-M0+ microprocessor as the core control unit of the LoRa base station, which is responsible for coordinating the work of each module, including processing the temperature measurement data received from the thermometer handheld terminal, controlling data storage, communication and indicator light status display, and ensuring efficient and stable operation of the base station.

[0081] The base station LoRa communication module 212 is used to combine with the second wireless communication antenna to communicate wirelessly with the thermometer handheld terminal; it adopts the LoRa wireless communication technology based on Semtech SX1276 / 77 / 78, and is responsible for long-distance, low-power data communication with the thermometer handheld terminal, realizing real-time reception and forwarding of temperature measurement data, and supporting stable connection and data transmission of multiple handheld devices.

[0082] The base station storage module 213 is used to store corresponding data; it adopts IIC serial communication mode to electrically connect the EEPROM chip with the MCU module, and is used to store the temperature measurement data and related configuration files uploaded from the thermometer handheld terminal, ensuring the safe storage and traceability of the data, and supporting large-capacity data storage requirements.

[0083] The RS485 module 214 is used for data communication with the intelligent temperature control center; it adopts an isolated RS485 chip with self-protection, and realizes stable data transmission between the LoRa base station and the intelligent temperature control center through preset communication protocols and baud rates, supports long-distance and high-speed communication requirements, and ensures real-time upload and monitoring of temperature measurement data.

[0084] The indicator light module 215 is used to display the working status and communication status of the LoRa base station in combination with indicator lights; it uses multiple LED indicator lights to display the working status and communication status of the LoRa base station, such as power status, data receiving status, data sending status, etc., and provides operators with intuitive status indications through a combination of lights of different colors, which is convenient for quickly judging the operation status of the base station.

[0085] The power module 216 is used to combine a rechargeable battery and a power adapter to power other modules. It uses a wide voltage input chip LM2596, supports a wide voltage input range of DC5V-DC60V, and steadily reduces the input voltage to DC3.3V through an internal step-down circuit, providing a stable and reliable power supply for the MCU module, LoRa communication module, storage module, RS485 module and indicator light module on the base station circuit board, ensuring that the base station can work normally under various voltage environments.

[0086] The LoRa base station integrates functional modules such as LoRa communication, data storage, RS485 communication, status indication and wide voltage input power management, and uses a 32-bit Cortex-M0+ microprocessor as the core control unit. It uses LoRa wireless communication technology to achieve long-distance, low-power data communication with the thermometer handheld terminal; uses a large-capacity EEPROM chip to ensure the safe storage and traceability of data; uses an isolated 485 chip to achieve stable data transmission with the intelligent temperature control center; provides intuitive working status and communication status indication through LED indicators; at the same time, the wide voltage input power module ensures that the base station can work normally under various voltage environments, thereby improving the stability, reliability and flexibility of the entire temperature measurement system.

[0087] like Figure 8 As shown, the intelligent temperature control center 3 includes: a data processing module 31, a communication interface module 32, a process parameter sending module 33, a user interaction interface 34, a database module 35 and a security management module 36;

[0088] The data processing module 31 is respectively connected to the communication interface module 32, the process parameter sending module 33, the user interaction interface 34, the database module 35 and the security management module 36, and is used to parse, store and analyze the furnace temperature data and generate reports or charts; it adopts a high-performance Intel Xeon E-2276G processor, has powerful data processing and analysis capabilities, can parse, store and analyze the furnace temperature data in real time, generate detailed reports and charts, and provide managers with accurate temperature change trends and abnormal warnings.

[0089] The communication interface module 32 is used to communicate with the LoRa base station 2 through the RS485 transceiver to receive and send data; it integrates a high-performance RS485 transceiver to ensure stable and high-speed data transmission between the LoRa base station and the ModbusRTU communication protocol is adopted to support data reception and transmission to ensure the integrity and accuracy of the data.

[0090] The process parameter sending module 33 is used to send the process temperature range and other configuration information through the communication interface module 32 according to the product unique code of the thermometer handheld terminal 1; it accurately sends the process temperature range and other related configuration information through the communication interface module according to the product unique code of the thermometer handheld terminal. This module supports batch sending and single sending to ensure that each thermometer can receive the correct process parameters.

[0091] The user interaction interface 34 is used to provide a graphical interface for managers to display the real-time temperature measurement data, historical records, and abnormal alarm information of the furnace; it uses a high-resolution touch screen to provide an intuitive and easy-to-use graphical interface. It supports real-time display of the real-time temperature measurement data, historical records, and abnormal alarm information of the furnace, and supports functions such as data query and export, which greatly improves the operation convenience and work efficiency of managers.

[0092] The database module 35 is used to store furnace temperature data and supports data query and statistical analysis. It uses a high-performance MySQL database to support the storage, query and statistical analysis of large amounts of data. The module has data backup and recovery functions to ensure data security and integrity. At the same time, it supports custom query and report generation to meet the diverse needs of managers.

[0093] The security management module 36 is used for security management of data transmission and access control. It uses advanced encryption technology and access control strategies to ensure the security of data transmission and strict control of access rights. The module supports functions such as user identity authentication, authority allocation and data encryption, effectively preventing data leakage and illegal access.

[0094] The intelligent temperature control center integrates modules such as data processing, communication interface, process parameter distribution, user interaction interface, database and security management. It uses high-performance processors and advanced database technology to achieve real-time parsing, storage, analysis and secure transmission of furnace temperature data. It provides an intuitive and easy-to-use operation experience through a graphical interface, supports real-time data display, historical record query and abnormal alarm; uses MySQL database to achieve large-capacity data storage and efficient query and statistical analysis; communicates stably with the LoRa base station through RS485 transceiver and Modbus RTU protocol to ensure data integrity; supports accurate process parameter distribution and strict security management, effectively preventing data leakage and illegal access, thereby improving the intelligence level and data security of furnace temperature monitoring.

[0095] The furnace temperature measurement system in this embodiment realizes efficient data transmission between the thermometer handheld terminal and the LoRa base station and the intelligent temperature control center through LoRa wireless communication technology and RS485 wired communication technology. The system adopts professional industrial-grade temperature measurement chip and dual cold end compensation design to ensure high-precision temperature measurement over the entire range (±2°C error range), which significantly improves the accuracy and stability of temperature measurement. At the same time, the system has innovative functions such as intelligent voice prompts, color LCD display, local and cloud data backup, and zero power consumption when shut down, which reduces the difficulty of operation and enhances the integrity and security of data management. The intelligent temperature control center realizes real-time data processing, analysis and management through high-performance processors and database modules, providing strong technical support for quality control and production efficiency improvement in the foundry industry.

[0096] Embodiment 2;

[0097] This embodiment provides a furnace temperature measurement method, comprising the following steps:

[0098] 1) The intelligent temperature control center sends the process temperature range and other configuration information to the corresponding LoRa base station; the intelligent temperature control center communicates with the LoRa base station through the RS485 transceiver, and accurately sends the process temperature range, product name, product process standard temperature, product composition and other configuration information according to the unique product code of each thermometer handheld terminal. At the same time, the intelligent temperature control center also supports batch and single sending to ensure that each thermometer can receive the correct process parameters.

[0099] 2) The LoRa base station forwards the process temperature range and other configuration information to the corresponding thermometer handheld terminal; after receiving the configuration information sent by the intelligent temperature control center, the LoRa base station forwards this information to the corresponding thermometer handheld terminal through the LoRa wireless communication technology. The LoRa base station supports a multi-slave one-master communication connection mode to ensure that multiple thermometer handheld terminals can receive configuration information at the same time.

[0100] 3) The handheld thermometer performs a self-test after it is turned on, detects the thermocouple insertion status and ambient temperature, and displays the self-test results, with voice prompts. After the handheld thermometer is turned on, it performs a self-test operation to detect the thermocouple insertion status and ambient temperature. The self-test results are displayed on the LCD screen, and a voice prompt is issued through the voice module to inform the operator of the self-test results. The self-test content includes whether the thermocouple is correctly inserted and whether the ambient temperature is within the normal range.

[0101] 4) The thermometer handheld terminal adjusts the position number and gun number through buttons; the operator adjusts the position number and gun number of the thermometer through the external buttons on the thermometer handheld terminal. The position number and gun number are used to identify different temperature measurement positions and temperature measurement guns to ensure the accuracy and traceability of the data.

[0102] 5) The handheld end of the thermometer inserts the thermocouple into the preset depth below the liquid level of the molten metal in the furnace to collect temperature data; the operator inserts the thermocouple of the handheld end of the thermometer into the preset depth of 15cm below the liquid level of the molten metal in the furnace to start the temperature measurement operation. The thermometer uses a professional industrial-grade temperature measurement chip and a dual cold end compensation design to collect temperature data of the molten metal in real time.

[0103] 6) The handheld terminal of the thermometer processes the temperature measurement data, calculates the actual temperature measurement results and displays them, and uses voice to remind the temperature measurement results and whether they exceed the process range; the MCU module of the handheld terminal of the thermometer processes the collected temperature data and calculates the actual temperature measurement results. The temperature measurement results are displayed on the LCD screen, and a voice reminder is issued through the voice module to inform the operator of the temperature measurement results and whether they exceed the process range. If the temperature exceeds the process range, the display will show a red font warning, accompanied by a voice alarm.

[0104] 7) The temperature measurement data and time tags are stored in the thermometer handheld terminal and uploaded to the corresponding LoRa base station; the thermometer handheld terminal stores the temperature measurement data and time tags in the EEPROM chip to ensure the security and traceability of the data. At the same time, the temperature measurement data is uploaded to the corresponding LoRa base station through the built-in LoRa communication module, supporting local backup and remote transmission of data.

[0105] 8) The LoRa base station receives the temperature measurement data and uploads it to the intelligent temperature control center; the LoRa base station receives the temperature measurement data uploaded by the thermometer handheld terminal through the LoRa communication module, and uploads the data to the intelligent temperature control center through the RS485 transceiver. The LoRa base station supports stable connection and data transmission of multiple handheld devices to ensure the real-time and accuracy of the data.

[0106] 9) The intelligent temperature control center processes and analyzes the uploaded data, generates reports or charts, and displays real-time temperature measurement data, historical records, and abnormal alarm information. The intelligent temperature control center processes and analyzes the uploaded temperature measurement data in real time through a high-performance processor, and generates detailed reports and charts. The intelligent temperature control center supports real-time display of the furnace's temperature measurement data, historical records, and abnormal alarm information, and provides data query, export and other functions. At the same time, the intelligent temperature control center also has data backup and recovery functions to ensure data security and integrity.

[0107] This embodiment provides a high-precision furnace temperature measurement method. Through the collaborative work of the intelligent temperature control center, the LoRa base station and the thermometer handheld terminal, the full-process automated management from the issuance of process parameters to data collection, processing, storage and analysis is realized. The intelligent temperature control center accurately sends the process parameters, and the LoRa base station ensures the stable connection and data transmission of multiple thermometer handheld terminals. The thermometer handheld terminal has the functions of power-on self-test, voice reminder, high-precision temperature measurement and local data storage to ensure the accuracy and reliability of temperature measurement. The intelligent temperature control center processes and analyzes data in real time, generates reports and charts, provides real-time temperature measurement data, historical records and abnormal alarm information, and supports data query and export. This method significantly improves the temperature measurement accuracy and stability, reduces the difficulty of operation, enhances the integrity and security of data management, and provides a strong technical guarantee for quality control and production efficiency improvement in the foundry industry.

[0108] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0109] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A furnace temperature measurement system, characterized in that: include: At least one thermometer handheld terminal, at least one LoRa base station and an intelligent temperature control center; wherein, The thermometer handheld terminal and the LoRa base station perform wireless data transmission via LoRa communication; The LoRa base station and the intelligent temperature control center perform wired data transmission via the RS485 interface.

2. A furnace temperature measurement system according to claim 1, characterized in that: The thermometer handheld terminal includes: a thermometer circuit board, an internal bracket, a selection button, a stainless steel shell, a first wireless communication antenna, a stainless steel gun barrel, a charging port, a confirmation button and a liquid crystal display.

3. A furnace temperature measurement system according to claim 2, characterized in that: The thermometer circuit board includes: a thermometer MCU module, a thermometer storage module, a temperature measurement module, a voice module, a thermometer LoRa communication module, a liquid crystal display module, a button module, a power charging management module, a battery power supply module and a power step-down module; The thermometer MCU module is respectively connected to the thermometer storage module, the temperature measurement module, the voice module, the thermometer LoRa communication module, the liquid crystal display module, the button module, the power charging management module, the battery power supply module and the power supply step-down module for corresponding control; The temperature measuring instrument storage module is used to store historical temperature measurement data and related configuration files; The temperature measurement module is used to measure the furnace temperature in combination with the thermocouple built into the stainless steel gun barrel; The voice module is used for voice reminder and user operation prompt; The thermometer LoRa communication module is used to combine with the first wireless communication antenna to perform wireless communication with the LoRa base station; The LCD display module is used to display temperature measurement data, location number, gun number, furnace number, battery power, and wireless signal strength information in combination with the LCD display; The button module is used to adjust the temperature measuring instrument position number and the gun number in combination with the selection button and the confirmation button; The power charging management module, the battery power supply module and the power step-down module are connected in sequence and are used to combine with a rechargeable battery and a power adapter to supply power to other modules.

4. A furnace temperature measurement system according to claim 1, characterized in that: The LoRa base station includes: a base station circuit board, a second wireless communication antenna, an aluminum alloy shell, a switch button, a terminal interface and an indicator light.

5. A furnace temperature measurement system according to claim 4, characterized in that: The base station circuit board includes: a base station MCU module, a base station LoRa communication module, a base station storage module, an RS485 module, an indicator light module and a power supply module; The base station MCU module is respectively connected to the base station LoRa communication module, the base station storage module, the RS485 module and the power module for corresponding control; The base station LoRa communication module is used to combine with the second wireless communication antenna to perform wireless communication with the thermometer handheld terminal; The base station storage module is used to store corresponding data; The RS485 module is used for data communication with the intelligent temperature control center; The indicator light module is used to display the working status and communication status of the LoRa base station in combination with the indicator light; The power module is used to combine with a rechargeable battery and a power adapter to supply power to other modules.

6. A furnace temperature measurement system according to claim 1, characterized in that: The intelligent temperature control center includes: a data processing module, a communication interface module, a process parameter sending module, a user interaction interface, a database module and a security management module; The data processing module is respectively connected to the communication interface module, the process parameter sending module, the user interaction interface, the database module and the security management module, and is used to parse, store and analyze the furnace temperature data and generate reports or charts; The communication interface module is used for data communication with the LoRa base station; The process parameter sending module is used to send the process temperature range and other configuration information through the communication interface module according to the unique product code of the thermometer handheld terminal; The user interaction interface is used to provide a graphical interface for managers to display the furnace's real-time temperature measurement data, historical records, and abnormal alarm information; The database module is used to store furnace temperature data and support data query and statistical analysis; The security management module is used for security management of data transmission and access permission control.

7. A method for measuring temperature of a furnace, characterized in that: The following steps are involved: The intelligent temperature control center sends the process temperature range and other configuration information to the corresponding LoRa base station; The LoRa base station forwards the process temperature range and other configuration information to the corresponding thermometer handheld terminal; The handheld terminal of the thermometer performs a self-test when powered on, detects the thermocouple insertion status and ambient temperature, and displays the self-test results with voice reminders; The handheld end of the thermometer adjusts the position number and gun number by pressing buttons; The handheld end of the temperature measuring instrument inserts the thermocouple into a preset depth below the liquid level of the molten metal in the furnace to collect temperature data; The handheld terminal of the thermometer processes the temperature measurement data, calculates the actual temperature measurement results and displays them, and reminds you of the temperature measurement results and whether they exceed the process range through voice; The temperature measurement data and time tags are stored in the thermometer handheld terminal and uploaded to the corresponding LoRa base station; The LoRa base station receives the temperature measurement data and uploads it to the intelligent temperature control center; The intelligent temperature control center processes and analyzes the uploaded data, generates reports or charts, and displays real-time temperature measurement data, historical records, and abnormal alarm information.

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