A calibration method and calibration device for a fully automatic dry thermostat

Abstract

The present invention provides a calibration method and calibration device for a fully automatic dry thermostat, and relates to the technical field of dry thermostats. The calibration method includes the following steps: receiving a heating instruction and controlling the heating of the dry thermostat; setting a cycle duration and a collection interval; obtaining multiple real-time temperature sequences within the cycle duration, and the real-time temperature sequence includes multiple real-time temperatures collected according to the collection interval; the dry thermostat has at least one inspected hole; the real-time temperature is obtained by real-time collection by a telescopic sensor arranged in the inspected hole, and the telescopic sensor abuts against the inner wall of the inspected hole; judging whether the dry thermostat has reached a temperature stable state according to each real-time temperature sequence and a steady-state strategy; if so, starting to record and store the temperature; if not, repeating until the dry thermostat reaches a temperature stable state. This scheme combines accurate measurement of metal wall temperature with clear steady-state judgment basis, greatly improving the calibration accuracy of the dry thermostat.

Description

Technical Field

[0001] The invention relates to the technical field of dry-type thermostats, and in particular to a calibration method and a calibration device for a full-automatic dry-type thermostat. Background Art

[0002] Dry thermostats are widely used in experiments and tests in the fields of biology, chemistry, etc. At present, when measuring and calibrating the temperature of a dry thermostat, the sensor is usually placed in the hole to be tested of the dry thermostat for sealed measurement. If the temperature is similar after several measurements, it is determined that a steady state has been reached. However, this method has disadvantages: first, there is a lack of a unified basis for steady-state judgment; second, the sealed measurement method actually measures the air temperature in the hole to be tested. However, the thermal conductivity of air is very different from that of metal, and the air temperature cannot accurately reflect the actual working temperature of the metal bath. Therefore, these will reduce the accuracy of judging whether the metal bath dry thermostat has reached a temperature steady state. Summary of the invention

[0003] In view of the above defects or deficiencies in the prior art, the present invention aims to provide a calibration method and a calibration device for a fully automatic dry thermostat to improve the accuracy of judging whether the metal bath dry thermostat reaches a temperature steady state.

[0004] In a first aspect, the present invention provides a calibration method for a fully automatic dry thermostat, comprising the following steps:

[0005] S1. Receive heating instructions and control the dry thermostat to heat;

[0006] S2. Set the cycle duration and collection interval;

[0007] S3. Acquire multiple real-time temperature sequences within the cycle time, the real-time temperature sequences comprising multiple real-time temperatures collected according to the collection interval; the dry thermostat has at least one inspected hole; the real-time temperature is collected in real time by a telescopic sensor disposed in the inspected hole, the telescopic sensor abutting against the inner wall of the inspected hole;

[0008] S4. According to each of the real-time temperature sequences according to the steady-state strategy, it is determined whether the dry thermostat reaches a temperature stable state;

[0009] S5. If yes, start recording and storing the temperature; if no, repeat steps S3-S4 until the dry thermostat reaches a temperature stable state.

[0010] According to the technical solution provided by the present invention, the plurality of real-time temperature sequences are composed of the real-time temperature collected in real time by a first telescopic sensor;

[0011] Step S4 includes the following steps:

[0012] S41. Obtaining the average value of each of the real-time temperature sequences of the first telescopic sensor, recorded as a first temperature average value, to obtain a first temperature average value set;

[0013] S42. Traverse the first temperature average value set, and if any two adjacent first temperature average values ​​meet a steady-state condition, determine that the dry thermostat has reached a stable state.

[0014] According to the technical solution provided by the present invention, the steady-state condition is that the absolute value of the difference between two adjacent first temperature average values ​​is less than the first preset fluctuation temperature.

[0015] According to the technical solution provided by the present invention, the dry thermostat has a plurality of inspection holes distributed at different positions of the dry thermostat, and a second telescopic sensor is respectively arranged in each of the inspection holes;

[0016] Step S3 includes the following steps:

[0017] S31, obtaining a real-time temperature set corresponding to each of the second telescopic sensors within the period, wherein the real-time temperature set includes a plurality of the real-time temperature sequences;

[0018] Step S4 includes the following steps:

[0019] S43: judging whether the dry thermostat reaches a temperature stable state according to the real-time temperature sequence in the real-time temperature set corresponding to each second telescopic sensor and in accordance with a steady-state strategy.

[0020] According to the technical solution provided by the present invention, step S43 includes the following steps:

[0021] S4301. Obtain a second temperature average value set corresponding to each second telescopic sensor according to the real-time temperature set corresponding to each second telescopic sensor;

[0022] S4302, traversing all the second telescopic sensors and all the sets of the temperature average values ​​corresponding to each of the second telescopic sensors, marking any two adjacent second telescopic sensors whose temperature average values ​​meet a steady-state condition as steady-state telescopic sensors;

[0023] S4303: If the ratio of the number of the steady-state telescopic sensors to the number of all second telescopic sensors is greater than or equal to a first preset ratio, it is determined that the dry thermostat has reached a temperature stable state.

[0024] According to the technical solution provided by the present invention, the cycle duration includes a plurality of acquisition time periods formed in a time sequence corresponding to the acquisition interval, each acquisition time period corresponds to one of the real-time temperature sequences, and the number of the acquisition time periods is the same as the number of the second telescopic sensors provided in the dry thermostat;

[0025] Step S43 includes the following steps:

[0026] S4311, acquiring a sensor temperature set corresponding to each acquisition period, wherein the sensor temperature set includes a plurality of the second telescopic sensors and a period temperature sequence of each of the second telescopic sensors, wherein the period temperature sequence is a real-time temperature sequence corresponding to the acquisition period;

[0027] S4312, selecting one of the time period temperature sequences from each of the sensor temperature sets to obtain a target real-time temperature sequence for each of the sensor temperature sets; wherein the acquisition time periods corresponding to all the target real-time temperature sequences are different from each other;

[0028] S4313. According to all the target real-time temperature sequences and in accordance with the steady-state strategy, determine whether the dry thermostat has reached a temperature stable state.

[0029] According to the technical solution provided by the present invention, step S4313 includes the following steps:

[0030] S43131, obtaining an average value of each target real-time temperature sequence, recording it as a target temperature average value, and obtaining a target temperature average value set;

[0031] S43132. Traverse the target temperature average value set, and if any two adjacent target temperature average values ​​satisfy a steady-state condition, determine that the dry-type thermostat has reached a stable state.

[0032] According to the technical solution provided by the present invention, step S42 includes the following steps:

[0033] Traversing the set of temperature average values, if any two adjacent temperature average values ​​satisfy the steady-state condition, obtaining a reference temperature average value of at least one other telescopic sensor; the reference temperature average value is a temperature average value corresponding to a real-time temperature sequence corresponding to the last acquisition period within the cycle duration; the other telescopic sensor is any telescopic sensor except the first telescopic sensor;

[0034] If the absolute value of the difference between the temperature average value corresponding to the last real-time temperature sequence of the first telescopic sensor and at least one of the reference temperature average values ​​is less than a first preset threshold, it is determined that the dry thermostat reaches a stable state.

[0035] In a second aspect, the present invention provides a calibration device for a fully automatic dry thermostat, which is used to implement the calibration method for the fully automatic dry thermostat as described above; the dry thermostat has a thermostat, a metal substrate is provided in the thermostat, and a plurality of heating holes arranged in sequence are provided on the metal substrate, and the axial direction of each of the metal holes is the height direction of the thermostat; wherein at least one of the heating holes is used as the inspected hole; the calibration device comprises:

[0036] A calibration module, the calibration module is configured to set a cycle duration and a collection interval, obtain a plurality of real-time temperature sequences within the cycle duration, and determine whether the dry thermostat reaches a temperature stable state according to a steady-state strategy based on each of the real-time temperature sequences;

[0037] A collection module, the collection module is electrically connected to the calibration module, and is used to transmit the collected real-time temperature to the calibration module; the collection module includes at least one telescopic sensor that can be placed in the inspected hole, and the telescopic sensor includes:

[0038] A hollow bolt, one end of which is tightly in contact with the bottom of the inspected hole, and a platinum resistor for obtaining the real-time temperature of the metal substrate is inserted into the hollow bolt; a plurality of elastic springs are arranged outside the hollow bolt, and the two ends of each of the elastic springs are respectively sleeved on the two ends of the hollow bolt, including a free end and a fixed end;

[0039] A driving assembly is used to drive the free end to move along the hollow bolt toward the fixed end so that the elastic spring sheet abuts against the inner wall of the inspected hole.

[0040] According to the technical solution provided by the present invention, the driving assembly includes an adjustable nut sleeved outside the hollow bolt and threadedly connected thereto, and the adjustable nut is arranged at the free end away from the fixed end side.

[0041] Compared with the prior art, the beneficial effects of the present invention are as follows: the telescopic sensor used in the present invention abuts against the inner wall of the hole to be tested, and can directly measure the metal wall temperature of the metal bath. The metal wall temperature can more accurately reflect the actual working temperature of the dry thermostat, providing a more reliable data basis for experiments and tests. By setting the cycle duration, collection interval and steady-state strategy, it is possible to accurately determine whether the dry thermostat has reached a temperature stable state, which provides a clear operating basis for the experimenter, ensuring that the test is carried out after the dry thermostat reaches a stable state, thereby improving the accuracy and reliability of the experimental results. The combination of accurate measurement of the metal wall temperature and clear steady-state judgment basis can greatly improve the calibration accuracy of the dry thermostat. This is crucial for experiments and tests that require precise temperature control, and helps to improve the repeatability and comparability of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A flow chart of the steps of the calibration method of the fully automatic dry thermostat provided by the present invention;

[0043] Figure 2 A schematic structural diagram of a telescopic sensor in a calibration device for a fully automatic dry-type thermostat provided by the present invention.

[0044] The text annotations in the figure represent:

[0045] 1. Adjustable nut; 2. First fixed nut; 3. Hollow bolt; 4. Elastic spring. DETAILED DESCRIPTION

[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0047] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0048] Example 1

[0049] As mentioned in the background technology, in view of the problems in the prior art, the present invention proposes a calibration device for a fully automatic dry thermostat; the dry thermostat has a thermostat, a metal substrate is provided in the thermostat, and a plurality of heating holes arranged in sequence are provided on the metal substrate, and the axial direction of each heating hole is the height direction of the thermostat; wherein at least one of the heating holes is used as the inspected hole;

[0050] Specifically, the thermostatic bath is generally a rectangular or cubic bath, the metal substrate is a metal block adapted to the size of the thermostatic bath, and can be made of aluminum metal. The number and spacing of the heating holes can be designed according to the size of the thermostat, heating power and temperature uniformity requirements.

[0051] The calibration device comprises:

[0052] A calibration module, the calibration module is configured to set a cycle duration and a collection interval, obtain a plurality of real-time temperature sequences within the cycle duration, and determine whether the dry thermostat reaches a temperature stable state according to a steady-state strategy based on each of the real-time temperature sequences;

[0053] A collection module, the collection module is electrically connected to the calibration module, and is used to transmit the collected real-time temperature to the calibration module; the collection module includes at least one telescopic sensor that can be placed in the inspected hole, such as Figure 2 As shown, the telescopic sensor comprises:

[0054] A hollow bolt 3, one end of which is in close contact with the bottom of the inspected hole, and a platinum resistor for obtaining the real-time temperature of the metal substrate is inserted in the hollow bolt 3; a plurality of elastic springs 4 are provided outside the hollow bolt 3, and the two ends of each of the elastic springs 4 are respectively sleeved on the two ends of the hollow bolt 3, including a free end and a fixed end;

[0055] Specifically, the platinum resistor is inserted into the hollow bolt 3, in direct contact with the metal substrate (the end of the platinum resistor can directly contact the surface of the metal substrate through the opening at the bottom of the hollow bolt 3, thereby realizing direct heat conduction, or selecting a material with good thermal conductivity to make the hollow bolt 3, such as copper, aluminum, etc. When the temperature of the metal substrate changes, the heat will be quickly conducted to the internal platinum resistor through the hollow bolt 3) or indirectly contacted through the elastic spring 4 (the elastic spring 4 usually has a certain elasticity and thermal conductivity. When one end of the elastic spring 4 is in close contact with the metal substrate and the other end is in contact with the hollow bolt 3 or the platinum resistor, the heat of the metal substrate will be transferred to the platinum resistor in the hollow bolt 3 through the elastic spring 4, thereby indirectly measuring the temperature of the metal substrate), which can quickly and accurately sense the temperature change of the metal substrate. The acquisition module also includes a temperature detection device, and the platinum resistor converts the temperature signal into a resistance signal, which is transmitted to the temperature detection device through a connected circuit for processing and display. When the metal substrate is heated, the heat is transferred to the platinum resistor through heat conduction, causing its resistance value to change. The temperature detection equipment calculates the real-time temperature of the metal substrate based on the change in the resistance value of the platinum resistor.

[0056] A driving assembly is used to drive the free end to move along the hollow bolt 3 toward the fixed end, so that the elastic spring sheet 4 abuts against the inner wall of the inspected hole.

[0057] Specifically, under the adjustment of the driving component, the elastic spring piece 4 can abut against the inner wall of the inspected hole, stably placing the hollow bolt in the inspected hole (when stably placed in the inspected hole, the hollow bolt 3 is coaxially arranged with the inspected hole, and the bottom end is tightly abutted against the bottom of the inspected hole). When the inspected hole needs to be replaced or the telescopic sensor needs to be removed from the inspected hole, the driving component is adjusted to make the elastic spring piece 4 detach from the inner wall of the inspected hole, and the telescopic sensor can be removed from the inspected hole.

[0058] Specifically, for the following detection method, any one or more heating holes can be selected as the holes to be tested for temperature detection and calibration. For example, a heating hole located at the center of the metal substrate can be selected to better represent the temperature of the entire metal substrate; a heating hole close to the edge of the thermostatic bath can also be selected to detect the uniformity of the edge temperature.

[0059] In a preferred embodiment, the driving assembly includes an adjustable nut 1 which is sleeved outside the hollow bolt 3 and threadedly connected thereto, and the adjustable nut 1 is arranged at the free end away from the fixed end side.

[0060] Furthermore, the outer wall of the hollow bolt 3 is threadedly connected with two first fixing nuts 2. This embodiment has two groups of elastic spring sheets 4, and each group of elastic spring sheets 4 is fixed at the lower end by a first fixing screw to maintain firmness.

[0061] Specifically, the adjustable nut 1 in the driving assembly is threadedly connected to the hollow bolt 3, and by rotating the adjustable nut 1, the free end of the elastic spring 4 can be driven to move along the hollow bolt 3 toward the fixed end. The elastic spring 4 will produce elastic deformation during the movement, so that the telescopic sensor can adapt to heating holes of different apertures (by adjusting the degree of outward bending of the elastic spring 4 to make it stuck in heating holes of different apertures), and can also make the contact between the platinum resistor and the metal substrate tighter or looser.

[0062] Specifically, when the temperature of the metal substrate needs to be measured, the elastic spring sheet 4 can be tightened by rotating the adjustable nut 1, so that the platinum resistor is in close contact with the metal substrate to improve the accuracy of temperature detection. When the temperature does not need to be measured or the sensor needs to be replaced, the elastic spring sheet 4 can be loosened by rotating the adjustable nut 1 to facilitate the removal of the telescopic sensor from the hole to be inspected.

[0063] Example 2

[0064] Based on Example 1, this example proposes a calibration method for a fully automatic dry thermostat, such as Figure 1 As shown, the following steps are included:

[0065] S1. Receive heating instructions and control the dry thermostat to heat;

[0066] S2. Set the cycle duration and collection interval;

[0067] Optionally, the cycle duration is set to 30 minutes and the collection interval is set to 1 minute, which means that every 30 minutes is a collection cycle, during which temperature data is collected and analyzed to determine whether the thermostat is in a temperature steady-state stage.

[0068] S3. Acquire multiple real-time temperature sequences within the cycle time, the real-time temperature sequences comprising multiple real-time temperatures collected according to the collection interval; the dry thermostat has at least one inspected hole; the real-time temperature is collected in real time by a telescopic sensor disposed in the inspected hole, the telescopic sensor abutting against the inner wall of the inspected hole;

[0069] Specifically, 5 real-time temperature sequences can be obtained within the cycle time, each of which includes 6 real-time temperatures. For example, there are three detection holes, and the real-time temperature sequence of the telescopic sensor of the first detection hole is: sequence A1: 25.5°C, 25.8°C, 26.1°C, 26.3°C, 26.5°C, 26.7°C; sequence A2: 27.2°C, 27.5°C, 27.8°C, 2 8.0℃, 28.2℃, 28.4℃; Sequence A3: 28.8℃, 29.1℃, 29.4℃, 29.6℃, 29.8℃, 30.0℃; Sequence A4: 30.3℃, 30.6℃, 30.9℃, 31.1℃, 31.3℃, 31.5℃; Sequence A5: 31.8℃, 31.9℃, 31.9℃, 32.0℃, 32.0℃, 32.0℃. The real-time temperature sequence of the telescopic sensor of the second detection hole is: Sequence B1: 26.0℃, 26.2℃, 26.4℃, 26.6℃, 26.8℃, 27.0℃; Sequence B2: 27.5℃, 27.7℃, 27.9℃, 28.1℃, 28.3℃, 28.5℃; Sequence B3: 29.0℃, 29.2℃, 29.4℃, 29.6℃, 29.8℃, 30.0℃; Sequence B4: 30.5℃, 30.7℃, 30.9℃, 31.1℃, 31.3℃, 31.5℃; Sequence B5: 31.5℃, 31.6℃, 31.6℃, 31.7℃, 31.8℃, 31.8℃. The real-time temperature sequence of the telescopic sensor of the third detection hole: Sequence C1: 25.8℃, 26.0℃, 26.2℃, 26.4℃, 26.6℃, 26.8℃; Sequence C2: 27.3℃, 27.5℃, 27.7℃, 27.9℃, 28.1℃, 28.3℃; Sequence C3: 28.8℃, 29.0℃, 29.2℃, 29.4℃, 29.6℃, 29.8℃; Sequence C4: 30.3℃, 30.5℃, 30.7℃, 30.9℃, 31.1℃, 31.3℃; Sequence C5: 31.3℃, 31.5℃, 31.6℃, 31.7℃, 31.8℃, 31.8℃.

[0070] S4. According to each of the real-time temperature sequences according to the steady-state strategy, it is determined whether the dry thermostat reaches a temperature stable state;

[0071] S5. If yes, start recording and storing the temperature; if no, repeat steps S3-S4 until the dry thermostat reaches a temperature stable state.

[0072] In a preferred embodiment, the plurality of said real-time temperature sequences are composed of said real-time temperatures collected in real time by a first telescopic sensor;

[0073] Step S4 includes the following steps:

[0074] S41. Obtaining the average value of each of the real-time temperature sequences of the first telescopic sensor, recorded as a first temperature average value, to obtain a first temperature average value set;

[0075] Specifically, this embodiment is aimed at an application scenario with only one telescopic sensor. At this time, if the telescopic sensor of the first detection hole is used as the first telescopic sensor, the first temperature average values ​​of sequence A1, sequence A2, ... sequence A5 are calculated respectively. The first temperature average value of sequence A1 is 26.15, the first temperature average value of sequence A2 is 27.85, the first temperature average value of sequence A3 is 29.45, the first temperature average value of sequence A4 is 30.95, and the first temperature average value of sequence A5 is 31.93.

[0076] S42. Traverse the first temperature average value set, and if any two adjacent first temperature average values ​​meet a steady-state condition, determine that the dry thermostat has reached a stable state.

[0077] Furthermore, the steady-state condition is that the absolute value of the difference between two adjacent first temperature average values ​​is less than a first preset fluctuation temperature.

[0078] Specifically, the first preset fluctuating temperature can be a specific value or a temperature range. When it is a specific value, optionally, the first preset fluctuating temperature is 1°C, the absolute value of the difference between the first temperature average values ​​of sequence A2 and sequence A1 is 1.7, the absolute value of the difference between the first temperature average values ​​of sequence A3 and sequence A2 is 1.6, the absolute value of the difference between the first temperature average values ​​of sequence A4 and sequence A3 is 1.5, and the absolute value of the difference between the first temperature average values ​​of sequence A5 and sequence A4 is 0.98, wherein the absolute value of the difference between the first temperature average values ​​of sequence A5 and sequence A4 is less than the first preset fluctuating temperature. Therefore, it is determined that the dry thermostat reaches a stable state.

[0079] In a preferred embodiment, the dry thermostat has a plurality of inspection holes distributed at different positions of the dry thermostat, and a second telescopic sensor is respectively arranged in each of the inspection holes;

[0080] Specifically, taking the above content as an example, there are three detection holes, each detection hole is provided with a telescopic sensor, then the telescopic sensors in the first detection hole, the second detection hole and the third detection hole are all second telescopic sensors.

[0081] Step S3 includes the following steps:

[0082] S31, obtaining a real-time temperature set corresponding to each of the second telescopic sensors within the period, wherein the real-time temperature set includes a plurality of the real-time temperature sequences;

[0083] Step S4 includes the following steps:

[0084] S43: judging whether the dry thermostat reaches a temperature stable state according to the real-time temperature sequence in the real-time temperature set corresponding to each second telescopic sensor and in accordance with a steady-state strategy.

[0085] Further, step S43 includes the following steps:

[0086] S4301. Obtain a second temperature average value set corresponding to each second telescopic sensor according to the real-time temperature set corresponding to each second telescopic sensor;

[0087] Specifically, the set of second temperature average values ​​of the telescopic sensors in the first detection hole (that is, the set of first temperature average values ​​of the first telescopic sensors in the above-mentioned first detection hole) and the set of second temperature average values ​​of the telescopic sensors in the second detection hole are: the second temperature average value of sequence B1 is 26.5, the second temperature average value of sequence B2 is 28, the second temperature average value of sequence B3 is 29.5, the second temperature average value of sequence B4 is 31, and the second temperature average value of sequence B5 is 31.67; the set of second temperature average values ​​of the telescopic sensors in the third detection hole are: the second temperature average value of sequence C1 is 26.3, the second temperature average value of sequence C2 is 27.8, the second temperature average value of sequence C3 is 29.3, the second temperature average value of sequence C4 is 30.8, and the second temperature average value of sequence C5 is 31.62.

[0088] S4302, traversing all the second telescopic sensors and all the sets of the temperature average values ​​corresponding to each of the second telescopic sensors, marking any two adjacent second telescopic sensors whose temperature average values ​​meet a steady-state condition as steady-state telescopic sensors;

[0089] Specifically, it can be seen from the above that the three second telescopic sensors all meet the steady-state condition, and therefore there are three steady-state telescopic sensors.

[0090] S4303: If the ratio of the number of the steady-state telescopic sensors to the number of all second telescopic sensors is greater than or equal to a first preset ratio, it is determined that the dry thermostat has reached a temperature stable state.

[0091] Optionally, the first preset ratio is 2 / 3, and the ratio of the number of steady-state telescopic sensors to the number of all second telescopic sensors is 1, which is greater than 2 / 3, so it is determined that the dry thermostat has reached a temperature stable state.

[0092] The multiple telescopic sensors of this embodiment are distributed at different positions of the dry thermostat, and can obtain temperature information at different positions, avoiding the problem of insufficient local temperature representativeness that may occur when relying on only one telescopic sensor, thereby more comprehensively and accurately reflecting the temperature distribution and overall temperature stability in the entire dry thermostat.

[0093] Further, the cycle duration includes a plurality of acquisition time periods formed in a time sequence corresponding to the acquisition interval, each acquisition time period corresponds to one of the real-time temperature sequences, and the number of the acquisition time periods is the same as the number of the second telescopic sensors provided in the dry thermostat;

[0094] Specifically, this embodiment is aimed at application scenarios where the number of collection time periods is the same as the number of second telescopic sensors set in the dry thermostat, such as the collection interval is still 1 minute, the cycle length is still 30 minutes, which is divided into 3 collection time periods (the same as the number of 3 detection holes), namely the first 10 minutes, the middle 10 minutes, and the last 10 minutes, and correspondingly 3 real-time temperature sequences are obtained, each real-time temperature sequence includes 10 real-time temperatures.

[0095] Step S43 includes the following steps:

[0096] S4311, acquiring a sensor temperature set corresponding to each acquisition period, wherein the sensor temperature set includes a plurality of the second telescopic sensors and a period temperature sequence of each of the second telescopic sensors, wherein the period temperature sequence is a real-time temperature sequence corresponding to the acquisition period;

[0097] Exemplarily, the sensor temperature set corresponding to the first acquisition period is: the sequence D1 corresponding to the second telescopic sensor of the first detection hole: 25.5°C, 25.8°C, 26.1°C, 26.3°C, 26.5°C, 26.7°C, 27.2°C, 27.5°C, 27.8°C, 28.0°C; the sequence E1 corresponding to the second telescopic sensor of the second detection hole: 26.0°C, 26.2°C, 26.4°C, 26.6°C, 26.8°C, 27.0°C, 27.5°C, 27.7°C, 27.9°C, 28.1°C; The second telescopic sensors of the three detection holes correspond to sequence F1; correspondingly, the sensor temperature set corresponding to the second acquisition period is: sequence D2 corresponding to the second telescopic sensor of the first detection hole, sequence E2 corresponding to the second telescopic sensor of the second detection hole, and sequence F2 corresponding to the second telescopic sensor of the third detection hole; the sensor temperature set corresponding to the third acquisition period is: sequence D3 corresponding to the second telescopic sensor of the first detection hole, sequence E3 corresponding to the second telescopic sensor of the second detection hole, and sequence F3 corresponding to the second telescopic sensor of the third detection hole.

[0098] S4312, selecting one of the time period temperature sequences from each of the sensor temperature sets to obtain a target real-time temperature sequence for each of the sensor temperature sets; wherein the acquisition time periods corresponding to all the target real-time temperature sequences are different from each other;

[0099] Exemplarily, a sequence D1 of the first acquisition period, a sequence E2 of the second acquisition period, and a sequence F3 of the third acquisition period are selected as three target real-time temperature sequences.

[0100] S4313. According to all the target real-time temperature sequences and in accordance with the steady-state strategy, determine whether the dry thermostat has reached a temperature stable state.

[0101] Further, step S4313 includes the following steps:

[0102] S43131, obtaining an average value of each target real-time temperature sequence, recording it as a target temperature average value, and obtaining a target temperature average value set;

[0103] S43132. Traverse the target temperature average value set, and if any two adjacent target temperature average values ​​satisfy a steady-state condition, determine that the dry-type thermostat has reached a stable state.

[0104] Specifically, for the three target real-time temperature sequences, the determination may be performed in accordance with the above-mentioned steady-state determination method.

[0105] In a preferred embodiment, step S42 includes the following steps:

[0106] Traversing the set of temperature average values, if any two adjacent temperature average values ​​satisfy the steady-state condition, obtaining a reference temperature average value of at least one other telescopic sensor; the reference temperature average value is a temperature average value corresponding to a real-time temperature sequence corresponding to the last acquisition period within the cycle duration; the other telescopic sensor is any telescopic sensor except the first telescopic sensor;

[0107] If the absolute value of the difference between the temperature average value corresponding to the last real-time temperature sequence of the first telescopic sensor and at least one of the reference temperature average values ​​is less than a first preset threshold, it is determined that the dry thermostat reaches a stable state.

[0108] Specifically, step S42 is a method of determining a steady state through a telescopic sensor. Therefore, in order to improve accuracy, after determining that any two adjacent temperature averages satisfy the steady-state condition, the temperature average of the last acquisition period of the telescopic sensor can be compared with the last temperature averages of other telescopic sensors. If the difference is very small, it means that the temperature is close to being stable and the temperature uniformity of the entire metal matrix at different positions is also good. At this time, it is determined that a stable state has been reached, which helps to further improve accuracy.

[0109] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements, modifications or changes can be made, and the above technical features can be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A calibration method for a fully automatic dry thermostat, characterized in that: The following steps are involved: S1. Receive heating instructions and control the dry thermostat to heat; S2. Set the cycle duration and collection interval; S3. Acquire multiple real-time temperature sequences within the cycle time, the real-time temperature sequences comprising multiple real-time temperatures collected according to the collection interval; the dry thermostat has at least one inspected hole; the real-time temperature is collected in real time by a telescopic sensor disposed in the inspected hole, the telescopic sensor abutting against the inner wall of the inspected hole; S4. According to each of the real-time temperature sequences according to the steady-state strategy, it is determined whether the dry thermostat reaches a temperature stable state; S5, if yes, start recording and storing the temperature; if no, repeat steps S3-S4 until the dry thermostat reaches a temperature stable state; The dry thermostat has a thermostat, a metal substrate is provided in the thermostat, and a plurality of heating holes are arranged in sequence on the metal substrate, and the axial direction of each heating hole is the height direction of the thermostat; wherein at least one heating hole is used as the inspected hole; the calibration device of the fully automatic dry thermostat for implementing the calibration method as described above comprises: A calibration module, the calibration module is configured to set a cycle duration and a collection interval, obtain a plurality of real-time temperature sequences within the cycle duration, and determine whether the dry thermostat reaches a temperature stable state according to a steady-state strategy based on each of the real-time temperature sequences; A collection module, the collection module is electrically connected to the calibration module, and is used to transmit the collected real-time temperature to the calibration module; the collection module includes at least one telescopic sensor that can be placed in the inspected hole, and the telescopic sensor includes: A hollow bolt (3), one end of the hollow bolt (3) is tightly abutted against the bottom of the inspected hole, a platinum resistor for obtaining the real-time temperature of the metal substrate is inserted into the hollow bolt (3); a plurality of elastic spring sheets (4) are externally provided on the hollow bolt (3), two ends of each of the elastic spring sheets (4) are respectively sleeved on two ends of the hollow bolt (3), including a free end and a fixed end; A driving assembly, the driving assembly is used to drive the free end to move along the hollow bolt (3) toward the fixed end, so that the elastic spring sheet (4) abuts against the inner wall of the hole to be inspected.

2. The calibration method of the fully automatic dry thermostat according to claim 1, characterized in that: The plurality of real-time temperature sequences are composed of the real-time temperature collected in real time by a first telescopic sensor; Step S4 includes the following steps: S41. Obtaining the average value of each of the real-time temperature sequences of the first telescopic sensor, recorded as a first temperature average value, to obtain a first temperature average value set; S42. Traverse the first temperature average value set, and if any two adjacent first temperature average values ​​meet a steady-state condition, determine that the dry thermostat reaches a stable state.

3. The calibration method of the fully automatic dry thermostat according to claim 2, characterized in that: The steady-state condition is that the absolute value of the difference between two adjacent first temperature average values ​​is less than the first preset fluctuation temperature.

4. The calibration method of the fully automatic dry thermostat according to claim 1, characterized in that: The dry thermostat has a plurality of inspection holes distributed at different positions of the dry thermostat, and a second telescopic sensor is respectively arranged in each of the inspection holes; Step S3 includes the following steps: S31, obtaining a real-time temperature set corresponding to each of the second telescopic sensors within the period, wherein the real-time temperature set includes a plurality of the real-time temperature sequences; Step S4 includes the following steps: S43: judging whether the dry thermostat reaches a temperature stable state according to the real-time temperature sequence in the real-time temperature set corresponding to each second telescopic sensor and in accordance with a steady-state strategy.

5. The calibration method of the fully automatic dry thermostat according to claim 4, characterized in that: Step S43 includes the following steps: S4301. Obtain a second temperature average value set corresponding to each second telescopic sensor according to the real-time temperature set corresponding to each second telescopic sensor; S4302, traversing all the second telescopic sensors and all the sets of the temperature average values ​​corresponding to each of the second telescopic sensors, marking any two adjacent second telescopic sensors whose temperature average values ​​meet a steady-state condition as steady-state telescopic sensors; S4303: If the ratio of the number of the steady-state telescopic sensors to the number of all second telescopic sensors is greater than or equal to a first preset ratio, it is determined that the dry thermostat has reached a temperature stable state.

6. The calibration method of the fully automatic dry thermostat according to claim 4, characterized in that: The cycle duration includes a plurality of acquisition time periods formed in a time sequence corresponding to the acquisition interval, each acquisition time period corresponds to one of the real-time temperature sequences, and the number of the acquisition time periods is the same as the number of the second telescopic sensors provided in the dry thermostat; Step S43 includes the following steps: S4311, acquiring a sensor temperature set corresponding to each acquisition period, wherein the sensor temperature set includes a plurality of the second telescopic sensors and a period temperature sequence of each of the second telescopic sensors, wherein the period temperature sequence is a real-time temperature sequence corresponding to the acquisition period; S4312, selecting one of the time period temperature sequences from each of the sensor temperature sets to obtain a target real-time temperature sequence for each of the sensor temperature sets; wherein the acquisition time periods corresponding to all the target real-time temperature sequences are different from each other; S4313. According to all the target real-time temperature sequences and in accordance with the steady-state strategy, determine whether the dry thermostat has reached a temperature stable state.

7. The calibration method of the fully automatic dry thermostat according to claim 6, characterized in that: Step S4313 includes the following steps: S43131, obtaining an average value of each target real-time temperature sequence, recording it as a target temperature average value, and obtaining a target temperature average value set; S43132. Traverse the target temperature average value set, and if any two adjacent target temperature average values ​​satisfy a steady-state condition, determine that the dry-type thermostat has reached a stable state.

8. The calibration method of the fully automatic dry thermostat according to claim 2, characterized in that: Step S42 includes the following steps: Traversing the set of temperature average values, if any two adjacent temperature average values ​​satisfy the steady-state condition, obtaining a reference temperature average value of at least one other telescopic sensor; the reference temperature average value is a temperature average value corresponding to a real-time temperature sequence corresponding to the last acquisition period within the cycle duration; the other telescopic sensor is any telescopic sensor except the first telescopic sensor; If the absolute value of the difference between the temperature average value corresponding to the last real-time temperature sequence of the first telescopic sensor and at least one of the reference temperature average values ​​is less than a first preset threshold, it is determined that the dry thermostat reaches a stable state.

9. The calibration method of the fully automatic dry thermostat according to claim 1, characterized in that: The drive assembly comprises an adjustable nut (1) sleeved outside the hollow bolt (3) and threadedly connected thereto, wherein the adjustable nut (1) is arranged at the free end away from the fixed end.

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