Multifunctional thermoluminescence heating plate

Abstract

The invention discloses a multifunctional thermoluminescence heating plate. Reliable positioning and thermal contact can be provided for samples in various shapes on the same heating plate. Comprising a heating base, a heating plate body groove is formed in the heating base, and the heating plate body groove comprises a wafer fixing part used for limiting a wafer-shaped sample, a square fixing part used for limiting a square-shaped sample and a cylindrical fixing part used for limiting a glass cylindrical sample; the wafer fixing part comprises a circular base groove, an upper arc positioning part and a lower arc positioning part, wherein the upper arc positioning part and the lower arc positioning part are arranged on the two sides of the circular base groove respectively and symmetrically distributed relative to the two vertical diameters of the circular base groove. The end points of the two sides of the upper arc positioning part are each provided with a set of upper right-angle positioning part. A group of lower right-angle positioning parts is arranged on each of the two sides of the lower arc positioning part; the square fixing part comprises an upper right-angle positioning part and a lower right-angle positioning part; a left limiting clamping part and a right limiting clamping part are arranged between the upper arc positioning part and the lower arc positioning part; the cylindrical fixing part comprises a left limiting clamping part and a right limiting clamping part.

Description

Technical Field

[0001] This invention relates to the field of thermoluminescence measurement systems, and more specifically to a multifunctional thermoluminescence heating plate. Background Technology

[0002] Thermoluminescence (TL) readout devices are widely used in environmental monitoring, occupational health, nuclear power plants, military and personal environmental dose monitoring, and other fields. The core of the thermoluminescence detection process lies in the controlled heating of an irradiated sample, causing the stored radiation energy to be released as photons of specific wavelengths. This energy is then collected by photoelectric detection units such as photomultiplier tubes and converted into electrical signals, which are then converted into radiation dose after metrological calibration. Typical thermoluminescence readout temperatures range from approximately 240°C to 300°C, requiring high standards for heating uniformity, temperature control accuracy, thermal contact between the sample and the heated surface, and sample positioning stability.

[0003] In existing technologies, the heating plate, as a key component that directly contacts the sample and transfers heat, is typically designed and specially manufactured according to the shape of the thermoluminescence sample. Common types of heating plates on the market include square grooved plates for flat samples, circular grooved plates for round flat samples, and long strip or cylindrical grooved plates for cylindrical glass samples. Each type of heating plate can generally only be adapted to one sample shape or one range of sample sizes, thus presenting several common and serious problems in actual testing work: First, existing heating plates require frequent replacement, resulting in low testing efficiency and complex management. Different shapes or sizes of samples require corresponding dedicated heating plates, necessitating the preparation of multiple sets of different models of heating plates for different tasks in the field or laboratory. Each heating plate replacement not only consumes operation time but also significantly reduces throughput and work efficiency during batch testing or rapid on-site testing. Furthermore, maintaining an inventory of multiple heating plates to cover all sample sizes increases the burden of equipment management and quality control, impacting on-site emergency response and continuous monitoring capabilities.

[0004] Secondly, the current methods of fixing thermocouples or temperature sensors are fragile and have high maintenance costs. Existing heating plates and temperature sensors (such as thermocouples) are often fixed using spot welding to achieve temperature acquisition and control. Practical experience and production statistics show that such spot-welded connections are significantly vulnerable during the production assembly stage and subsequent on-site maintenance / replacement: on the one hand, the assembly and welding process itself generates a certain percentage of assembly defects, resulting in scrap on the production line; on the other hand, repeated disassembly and reassembly or improper operation on-site can lead to weld fatigue or detachment, causing the heating plate or sensor to fail. Based on actual production and usage experience, traditionally spot-welded heating plates are often scrapped during the production stage due to welding defects or contact failures; during use, especially with frequent replacements or maintenance, factors such as differences in operator proficiency can also increase the probability of weld detachment or scrapping.

[0005] In summary, traditional heating plates are designed to fit a single shape. If samples of different sizes or shapes are forcibly placed in mismatched grooves, problems such as poor contact, edge lifting, or sample shifting / rolling during heating often occur.

[0006] Poor contact between the sample and the heating surface can lead to reduced heat transfer efficiency, uneven heating, and increased reading fluctuations, affecting the accuracy and reproducibility of thermoluminescence readings. This is particularly true for powdered samples or tiny samples with dimensions close to the critical value, where positioning and thermal contact issues are more pronounced.

[0007] Traditional methods rely on the constant disassembly and replacement of various dedicated heating plates, and the solder joints of temperature sensors are prone to damage. In actual use, this often leads to a vicious cycle of "frequent replacement - damage - needing to replace again." This cycle not only reduces the overall lifespan of the equipment but also places higher demands on the reliability and durability of the heating plates. However, existing structures struggle to balance compatibility with ease of maintenance and long-term reliability.

[0008] Therefore, how to reliably position and thermally contact samples of various shapes (circular, square, glass cylinders, and even powders) on the same heating plate; how to reduce damage and scrap caused by heating plate replacement or temperature sensor fixing method while maintaining or improving heating uniformity and measurement reproducibility; how to reduce the reliance on high-skill requirements for on-site maintenance and improve the maintainability and service life of equipment; and how to improve work efficiency and reduce inventory and management costs in batch testing or rapid on-site testing scenarios. Summary of the Invention

[0009] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multifunctional thermoluminescence heating plate that can reliably position and thermally contact samples of various shapes on the same heating plate.

[0010] To solve the above technical problems, the technical method adopted by the present invention is as follows: The present invention discloses a multifunctional thermoluminescent heating plate, including a heating base, wherein a heating plate body groove is formed on the heating base, and the heating plate body groove includes a circular plate fixing part for defining a circular plate-shaped sample, a square fixing part for defining a square plate-shaped sample, and a cylindrical fixing part for defining a glass cylindrical sample. The circular piece fixing part includes a circular base groove and an upper circular arc positioning part and a lower circular arc positioning part, which are respectively disposed on both sides of the circular base groove and symmetrically distributed with respect to the two vertical diameters of the circular base groove. A set of upper right-angle positioning parts is provided at both ends of the upper arc positioning part; a set of lower right-angle positioning parts is provided at both ends of the lower arc positioning part; the square fixing part includes the upper right-angle positioning part and the lower right-angle positioning part; Between the upper and lower arc positioning parts, a left limiting clamping part and a right limiting clamping part are provided; the cylindrical fixing part includes a left limiting clamping part and a right limiting clamping part.

[0011] Furthermore, at the junction of the square fixing part and the cylindrical fixing part, a transition arc auxiliary positioning part is provided; the transition arc auxiliary positioning part is on the same circumferential path as the upper arc positioning part and the lower arc positioning part.

[0012] Furthermore, both the left limiting clamping part and the right limiting clamping part are provided with arc-shaped auxiliary positioning parts.

[0013] Furthermore, the heating base has fixing holes on both sides. The heating plate is fastened to the conductive stud by screws, and current flows through the stud and through the groove of the heating plate body, causing the groove of the heating plate body to heat up and heat the sample placed in the central area.

[0014] Furthermore, the heating base is an integral conductive component.

[0015] Furthermore, the heating plate body groove is made of a high resistivity metal.

[0016] Furthermore, the dimensions of the circular fixing part, the square fixing part, and the cylindrical fixing part respectively satisfy the following ranges: The diameter of the circular plate fixing part is less than 5.5mm, and the thickness is 0.1mm–1.0mm; The square-shaped fixing part has a side length of less than 4.5 mm and a thickness of 0.1 mm–1.0 mm; The outer diameter of the cylindrical fixing part is less than 2 mm, and the length is 7.5 mm–12 mm. Furthermore, the high resistivity metal material is selected from one or more materials such as nickel-chromium alloy, iron-chromium-aluminum alloy, or stainless steel.

[0017] Furthermore, a thermocouple sensor is provided on the lower surface of the heating base; the thermocouple sensor is located below the groove of the heating plate body.

[0018] Furthermore, the heating plate body groove forms a recessed groove structure relative to the upper surface of the heating base.

[0019] Beneficial effects: 1. Compared to existing technologies, this invention constructs a concentric composite positioning structure in the central region of the heating plate body groove on the heating base. This structure includes a circular base groove, symmetrical upper and lower circular arc positioning parts, upper and lower right-angle positioning parts for positioning square samples, and left and right limiting clamping parts located between the upper and lower arcs. This composite positioning structure, through clear geometric limiting and symmetrical arrangement, achieves direct compatibility and relatively fixed positioning for circular, square, cylindrical, and powdered samples. Technically, by organically integrating multiple positioning units within the same central region (rather than separating multiple dedicated heating plates), it achieves consistency in sample placement and repeatability in positioning, thereby reducing the operational procedures and time losses caused by changing different models of heating plates, and improving the speed of sample placement and the consistency of measurement.

[0020] 2. The heating base has fixing holes on both sides. The heating plate is fastened to the conductive stud by screws. Current flows through the stud and the groove of the heating plate body, causing the integrally formed metal body of the heating plate to generate Joule heat to heat the sample. At the same time, the heating base is an integral conductive component and the groove of the heating plate body is made of a high resistivity metal (such as nickel-chromium alloy, iron-chromium-aluminum alloy or stainless steel). These measures technically achieve stable and controllable heating power output through the electrical contact path of "stud-screw-plate body" and the material resistance characteristics.

[0021] Compared with traditional spot welding for conductivity, this solution forms electrical contact through mechanical fastening and uses the entire conductive disc as the heating element. Technically, it can significantly reduce scrap and repair caused by solder joint fatigue or welding failure, improve production and replacement reliability, and facilitate overall disassembly and maintenance.

[0022] 3. A thermocouple sensor is arranged on the lower surface of the heating base and located below the groove of the heating plate body. This technically ensures real-time measurement of the temperature of the heating surface or near the sample, thereby supporting closed-loop or preset temperature control strategies to achieve stable and controllable heating process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the multifunctional thermoluminescent heating disk in this invention; Figure 2 This is a schematic diagram of the overall structure of the heating plate body groove in this invention; Figure 3This is a schematic diagram of the clamping state of the circular sample in this invention; Figure 4 This is a schematic diagram of the clamping state of the square sample in this invention; Figure 5 This is a schematic diagram of the clamping state of the cylindrical sample in this invention; Figure 6 This is a schematic diagram of the clamping state of the powder sample in this invention. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Example 1 This embodiment is used to illustrate the basic structure and working principle of the present invention, aiming to clearly reveal the core technical solution of the present invention and ensure its feasibility.

[0026] like Figure 1-2 As shown, this embodiment discloses a structural layout of a multifunctional thermoluminescent heating plate. A heating plate body groove 4 and its central composite positioning structure are formed on the heating base 5 to achieve universal placement and relative fixation of circular, square, glass columnar, and powdered dosing elements. The heating base 5 has a heating plate body groove 4, and the heating plate body groove 4 forms a concentric composite positioning structure in its central region, including: a circular base groove 40, and an upper arc positioning part 11 and a lower arc positioning part 12 located symmetrically arranged on both sides of the circular base groove 40 along its vertical diameter. The upper arc positioning part 11 has an upper right angle positioning part 21 at each of its two ends, and the lower arc positioning part 12 has a lower right angle positioning part 22 at each of its two ends.

[0027] The upper right-angle positioning part 21 and the lower right-angle positioning part 22 cooperate to form a square fixing part, which is used to define the position of the square sheet-shaped sample. The upper arc positioning part 11, the lower arc positioning part 12, and the circular base groove 40 work together to form a circular sheet fixing part, which is used to define the position of the circular sheet-shaped sample.

[0028] The left limiting clamping part 31 and the right limiting clamping part 32, located between the upper and lower arcs, constitute a cylindrical fixing part, which is used to limit the position of the glass cylindrical sample.

[0029] The radial position of the circular base groove 40 is arranged on the same center line as the upper / lower circular arc positioning parts 11 and 12, forming a symmetrical positioning surface, so that when the circular sample is placed into the circular base groove 40, the upper / lower circular arcs 11 and 12 provide radial limitation and lateral support. More preferably, the radii of curvature of the upper arc positioning portion 11 and the lower arc positioning portion 12 range from 2.0 to 2.8 mm. When the upper limit of the diameter of the circular base groove 40 is 5.5 mm, this curvature can achieve a balance between radial constraint force and sample placement ease. The depth of the circular base groove 40 is typically in the range of 0.2 to 1.2 mm, preferably 0.3 to 0.8 mm. The setting of the base groove depth ensures that the upper surface of the sample forms a tight contact with the heating surface after placement, while also leaving space for a buffer pad.

[0030] The upper right-angle positioning part 21 and the lower right-angle positioning part 22 form two axial limits through two opposite right-angle grooves, ensuring that the square sample is constrained in the X and Y directions to achieve stable placement; preferably, the upper limit of the side length of the square fixing part formed by the upper right-angle positioning part 21 and the lower right-angle positioning part 22 is less than 4.5 mm, and the thickness can be accommodated in the example range of 0.1 to 1.0 mm.

[0031] The left limiting clamping part 31 and the right limiting clamping part 32 are arranged symmetrically to form a linear clamping unit, which, together with the arc-shaped auxiliary positioning part 33, restricts the radial movement of the cylindrical sample and assists in axial positioning. The radius of curvature of the arc-shaped auxiliary positioning part 33 is in the range of 0.8 to 1.2 mm to match the case where the outer diameter of the cylindrical sample is less than 2.0 mm, thereby effectively suppressing rolling in the axial and radial directions and ensuring stable thermal contact.

[0032] The circular base groove is designed with a depth of 40mm to match the thickness of the circular sample, ensuring that the sample can maintain close contact with the heating surface without lifting after placement.

[0033] Instructions for use: (e.g.) Figure 3 As shown, the circular sample 10 to be tested is placed in the circular base groove 40, and the sample is naturally positioned in the radial direction by the upper arc positioning part 11 and the lower arc positioning part 12. like Figure 4 As shown, the square sample 20 is inserted along its edge into the right-angle limiting gap formed by the upper right-angle positioning part 21 and the lower right-angle positioning part 22 to achieve bidirectional constraint in X and Y directions; like Figure 5 As shown, the glass cylindrical sample 30 is placed between the left limiting clamping part 31 and the right limiting clamping part 32. The arc-shaped auxiliary positioning part 33 matches the circumference of the cylindrical sample with the arc-shaped part to suppress the rolling or radial sliding of the sample during the heating process.

[0034] When using powdered samples, such as Figure 6 As shown, it can be placed directly into the heating plate body slot 4.

[0035] Example 2 Based on the structure of Example 1, this embodiment further implements the heating power supply scheme and material selection to achieve the function of overall conductive heating of the heating plate.

[0036] The heating plate body groove 4 and the heating base 5 of Example 1 are regarded as an integral conductive heating plate. The heating plate is installed by using the fixing holes 51 on both sides of the heating base 5 to cooperate with the conductive studs on the equipment. The heating plate is fastened to the studs by screws. In the fastened state, the stud → screw → heating plate form a current conduction path, so that the current generates Joule heat through the metal body of the heating plate and heats the sample in the central area.

[0037] Preferably, the heating base 5 serves as an integral conductive component, and the heating plate body groove 4 is made of a high-resistivity metal material such as nickel-chromium alloy, iron-chromium-aluminum alloy, or stainless steel to ensure the required resistance and heating power. The thickness ranges from 0.5 to 1.5 mm. The overall equivalent resistance R of the heating plate must satisfy the heating power PP = U^2 / R, where U is the supply voltage. The required R can be calculated based on the supply voltage and the target heating time, and the thickness and cross-sectional area can be determined based on the material resistivity and geometric dimensions.

[0038] After the stud mates with the fixing hole 51, the heating plate is secured with screws. To ensure long-term stable electrical contact and reduce local contact resistance, preferably, the contact surface is coated with a metal layer such as silver or nickel, or a thin conductive pad such as metal foil or hard graphite conductive pad is provided.

[0039] More preferably, in order to achieve controlled heating and ensure sample safety, the heating plate is electrically connected to the equipment control unit. The control unit controls the power supply current intensity or on / off sequence based on real-time feedback from the thermocouple sensor to achieve the preset heating curve and holding time.

[0040] Preferably, the contact surfaces of the stud and screw are metal-plated, such as silver or nickel-plated, to reduce contact resistance and inhibit contact degradation caused by oxidation. Alternatively or supplementarily, a thin conductive pad, such as a metal foil or hard graphite sheet, can be placed between the contact surfaces to increase the effective contact area and improve contact stability after assembly and disassembly cycles.

[0041] Example 3 Based on the structure of Example 1, this embodiment further optimizes the dimensions of the fixing part as follows: The dimensions of the circular plate fixing part, i.e., the circular base groove 40 and its matching positioning structure: the diameter of the circular base groove 40 or the circular plate fixing part is less than 5.5 mm, and the thickness is 0.1 mm–1.0 mm; The square fixing part, which is composed of the upper right-angle positioning part 21 and the lower right-angle positioning part 22, has the following dimensions: the side length of the square fixing part is limited to less than 4.5 mm, and the thickness ranges from 0.1 mm to 1.0 mm. The cylindrical fixing part is composed of a left limiting clamping part 31, a right limiting clamping part 32 and an arc-shaped auxiliary positioning part 33. The outer diameter corresponding to the opening or clamping distance of the cylindrical fixing part is less than 2.0 mm, and the axial accommodating length range is 7.5 mm–12 mm.

[0042] Preferably, the heating plate body groove 4 is recessed downward from the upper surface of the heating base 5 to form a groove-shaped structure, which forms a positioning edge on the plane and a curved or flat surface close to the sample on the cross section to ensure that the sample is positioned and in good contact with the heating surface.

[0043] Preferably, a thermocouple sensor is provided on the lower surface of the heating base 5. The thermocouple sensor is located in the near-central region below the heating plate body groove 4 so as to collect the temperature signal of the heating surface or near the sample surface through the thermal contact seat or thin thermal pad.

[0044] For thermocouples, it is recommended to use detachable plug-in or threaded sensor mounts to avoid solder joint fatigue caused by spot welding and to facilitate maintenance and replacement. During installation, place a thermal pad or thermal paste between the sensor mount and the heating plate body groove 4 to improve thermal contact efficiency. The sensor signal is acquired by the temperature control unit of the readout device for closed-loop control, thereby controlling the heating power supply curve.

[0045] Preferably, in order to fully translate the structural advantages of the present invention into the consistency and reproducibility of thermoluminescence readings, this embodiment takes temperature acquisition and control as a key point of synergistic performance in structural design, as detailed below.

[0046] 1. The sensing and control structure includes thermocouple sensors arranged on the lower surface of the heating base 5, which are electrically connected to the temperature control unit of the readout device. The temperature control unit employs closed-loop control logic, such as PID control, or implements program control based on a preset temperature rise curve, dynamically adjusting the heating power supply current or the on / off duty cycle based on temperature feedback.

[0047] 2. Control Performance Objectives To achieve the actual readout requirements, the following control objectives are adopted: the sampling frequency is at least once per second, preferably 2 to 10 times per second; the steady-state temperature control accuracy is within the range of 240 to 300 degrees Celsius, preferably ±2 degrees Celsius; the adjustable heating rate is 10 to 50 degrees Celsius per minute; when the temperature exceeds the safety threshold, the control unit should immediately cut off the power and issue an alarm.

[0048] 3. Control and Structure Synergy: Closed-loop control can compensate for the temperature response differences caused by different sample placement positions and thermal contact differences, making the sample surface temperature closer to the preset curve. Combined with the geometric positioning in Implementation 1 above, it can significantly reduce the systematic deviation of readings under different sample types.

[0049] Preferably, in order to avoid the fatigue problem of weld points caused by spot welding and to facilitate on-site maintenance, this embodiment adds a structure for removing the sensor holder and heat conduction improvement measures, as follows.

[0050] 1. Detachable sensor base structure: A pluggable or threaded sensor base is provided on the lower surface of the heating base 5. The sensor can be installed and locked by insertion or tightening. The sensor base should have a heat-conducting seat surface and a sealing structure to ensure long-term stable thermal contact and electrical safety.

[0051] 2. Use of thermal pads and thermal paste: Place a thin thermal pad or apply thermal paste between the sensor mount and the lower surface of the heating plate body slot 4 to reduce contact thermal resistance. The exemplary thermal pad thickness is 0.05 to 0.5 mm. The thermally conductive material must possess good thermal conductivity and high-temperature resistance.

[0052] 3. The maintenance and life verification manual should list the sensor replacement process, the maximum number of replacements recommended, and the test items after each replacement, such as measuring the thermal contact temperature difference or contact resistance between the sensor mount and the disk.

[0053] More preferably, a high-temperature resistant elastic buffer layer or buffer pad, such as a graphite sheet, ceramic fiber pad, or high-temperature resistant silicone pad, can be provided at each positioning location to increase the contact area between the sample and the metal heating surface, absorb the difference in thermal expansion, and reduce the impact of vibration.

[0054] Finally, to demonstrate that this embodiment includes repeatable test methods and judgment criteria.

[0055] 1. Contact Resistance Cyclic Test: Sample size is demonstrated to be at least 50 pieces. Measure the initial contact resistance using the four-terminal measurement method. Perform 100 assembly / disassembly cycles according to assembly specifications, recording the contact resistance every 10 cycles. The judgment criterion is that the initial contact resistance is less than or equal to 50 milliohms, and after 100 cycles, the increase in contact resistance does not exceed 10% or remains less than or equal to 100 milliohms.

[0056] 2. Comparison Test of Production and On-Site Replacement Scrap Rates: The control group used a heating plate fixed by traditional spot welding, while the implementation group used the structure of this invention. Each group had a sample size of at least 200 pieces. The number of scrapped pieces during production and on-site replacement was recorded, and the scrap rate was statistically analyzed and subjected to a statistical significance test. If the scrap rate of the implementation group was significantly lower than that of the control group, it would serve as strong evidence of reliability improvement.

[0057] 3. Temperature field uniformity and reading reproducibility test: Under the same power supply and control conditions, the same type of sample was placed on both the conventional heating plate and the heating plate of the present invention, and repeated data of sample surface temperature and thermoluminescence readings were collected. Each sample was repeated at least thirty times. The maximum temperature difference and the standard deviation of the readings were recorded to demonstrate the advantages of the present invention in terms of thermal field uniformity and reading stability.

[0058] 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 multifunctional thermoluminescent heating plate, comprising a heating base (5), characterized in that, The heating base (5) is provided with a heating plate body groove (4), which includes a circular plate fixing part for defining a circular plate sample, a square fixing part for defining a square plate sample, and a columnar fixing part for defining a glass columnar sample. The circular piece fixing part includes a circular base groove (40) and an upper arc positioning part (11) and a lower arc positioning part (12) respectively disposed on both sides of the circular base groove (40) and symmetrically distributed with two vertical diameters relative to the circular base groove (40). The upper arc positioning part (11) has a set of upper right angle positioning parts (21) at both ends; the lower arc positioning part (12) has a set of lower right angle positioning parts (22) at both ends; the square fixing part includes the upper right angle positioning part (21) and the lower right angle positioning part (22). Between the upper arc positioning part (11) and the lower arc positioning part (12), there is a left limiting clamping part (31) and a right limiting clamping part (32); the cylindrical fixing part includes the left limiting clamping part (31) and the right limiting clamping part (32).

2. The multifunctional thermoluminescent heating plate according to claim 1, characterized in that, At the junction of the square fixing part and the column fixing part, a transition arc auxiliary positioning part (13) is provided; the transition arc auxiliary positioning part (13) is on the same circumferential path as the upper arc positioning part (11) and the lower arc positioning part (12).

3. The multifunctional thermoluminescent heating plate according to claim 1, characterized in that, Both the left limiting clamping part (31) and the right limiting clamping part (32) are provided with arc-shaped auxiliary positioning parts (33).

4. The multifunctional thermoluminescent heating plate according to claim 1, characterized in that, The heating base (5) has fixing holes (51) on both sides.

5. The multifunctional thermoluminescent heating plate according to claim 1, characterized in that, The heating base (5) is an integral conductive component.

6. The multifunctional thermoluminescent heating plate according to claim 5, characterized in that, The heating plate body groove (4) is made of a high resistivity metal.

7. The multifunctional thermoluminescent heating plate according to any one of claims 1-5, characterized in that, The dimensions of the circular plate fixing part, the square plate fixing part, and the cylindrical fixing part respectively meet the following ranges: The diameter of the circular plate fixing part is less than 5.5mm, and the thickness is 0.1mm–1.0mm; The square-shaped fixing part has a side length of less than 4.5 mm and a thickness of 0.1 mm–1.0 mm; The outer diameter of the cylindrical fixing part is less than 2mm, and the length is 7.5mm–12mm.

8. The multifunctional thermoluminescent heating plate according to claim 7, characterized in that, The high resistivity metal material is selected from one or more of the following: nickel-chromium alloy, iron-chromium-aluminum alloy, or stainless steel.

9. The multifunctional thermoluminescent heating plate according to any one of claims 1-5, characterized in that, A thermocouple sensor is provided on the lower surface of the heating base (5); the thermocouple sensor is located below the heating plate body groove (4).

10. The multifunctional thermoluminescent heating plate according to any one of claims 1-9, characterized in that, The heating plate body groove (4) forms a recessed groove structure relative to the upper surface of the heating base (5).

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