Detector of superconducting electronic thermosensitive temperature control sensor and testing method thereof

Abstract

The invention discloses a detector for a superconducting electronic thermosensitive temperature control sensor and a testing method thereof. The detector comprises an operation case, and a heater, a temperature sensor, a graphene superconducting piece, an air blower, an air duct, a heat preservation layer, a partition plate support, a heat dissipation plate, an L-shaped supporting plate and the electronic thermosensitive temperature control sensor are arranged in the operation case. A temperature controller is arranged on the left portion of a front shell of the operation case, a constant-temperature switch button, a heating switch button and a blast switch button are arranged below the temperature controller, and an ohm display screen is arranged above the temperature controller. According to the invention, a detection technology of a high-precision superconducting electronic thermosensitive temperature control sensor is combined, a series of test and calibration functional devices are adopted, the test quality of the temperature control sensor is improved, the electronic thermosensitive temperature control sensor can provide more accurate and reliable results in various environments after test, the demand of comparison test is reduced, the time is saved, and the test efficiency is improved. And interference on enterprise operation is reduced, so that unnecessary economic pressure is relieved.

Description

Technical Field

[0001] The present invention belongs to the field of temperature detection and control, and particularly relates to a detector for a superconducting electronic thermosensitive temperature control sensor and a testing method thereof. Background Art

[0002] Due to the diverse models, specific temperature measurement ranges, and accuracy requirements of electronic thermosensitive temperature control sensors, they must undergo strict testing and calibration during the production and procurement processes to ensure that their performance meets the standards and satisfies the reliability requirements of temperature control applications. However, in actual operation, factors such as geographical location, operator skills, operating procedures, instrument differences, and inconsistent operating methods may have an impact, resulting in deviations in the test data obtained by different companies and users. These deviations may lead to frequent comparison tests between the supply and demand sides and even require confirmation testing by a third-party agency, thus consuming time and potentially affecting the normal operation of enterprises, causing unnecessary economic burdens.

[0003] Therefore, it is necessary to propose a detector for a superconducting electronic thermosensitive temperature control sensor and a testing method thereof to improve the stability, measurement accuracy, and response speed of the equipment, be able to provide more accurate and reliable results in various environments, reduce the need for comparison tests, save time, and reduce interference with enterprise operations, thereby alleviating unnecessary economic pressure. Summary of the Invention

[0004] The present invention provides a detector for a superconducting electronic thermosensitive temperature control sensor and a testing method thereof to solve problems such as insufficient stability, low measurement accuracy, and slow response speed of existing detectors, and to achieve a superconducting electronic thermosensitive temperature control sensor detector with a stable detection process, time-saving, high economic efficiency, and accurate test results during detection.

[0005] To solve the above problems, the technical solutions provided by the present invention are as follows:

[0006] An embodiment of the present invention provides a detector for a superconducting electronic thermal temperature control sensor. The detector includes an operation chassis, and a heater (10), a temperature sensor (11), a graphene superconducting sheet (13), a blower (15), an air duct (16), a thermal insulation layer (17), a partition bracket (14), a heat dissipation plate (18), and an L-shaped support plate (19) are arranged in the operation chassis. A wind channel (16) is formed between the L-shaped support plate (19) and the outer shell on one side of the operation chassis. The wind channel (16) is used to guide the flow of air to ensure that the air can effectively circulate inside the operation chassis. The temperature sensor (11) is arranged in the wind channel (16). The heater (10) and the heat dissipation plate (18) are located below the L-shaped support plate (19), and the heat dissipation plate (18) is used to evenly disperse the heat generated by the heater (10). The graphene superconducting sheet (13) and the partition bracket (14) are connected to the L-shaped support plate (19). The graphene superconducting sheet (13) serves as a partition for placing the electronic thermal temperature control sensor to accelerate heat conduction. The partition bracket (14) is used to fix the electronic thermal temperature control sensor. The blower (15) is arranged at the bottom of the detector to ensure that the electronic thermal temperature control sensor placed in the tester can be evenly heated and avoid local overheating or overcooling.

[0007] On the left part of the front side outer shell of the operation chassis, a temperature controller (4) is arranged. Below the temperature controller (4), a constant temperature switch button (1), a heating switch button (2), and a blower switch button (3) are arranged. Above the temperature controller (4), an ohm display screen (6) is arranged. The constant temperature switch button (1) is used to keep the temperature inside the box constant at a value. The heating switch button (2) is used to control the temperature controller (4) to start heating and stop heating. The blower switch button (3) is used to turn on and off the blower (15). The temperature controller (4) sets a preset upper limit threshold for the current test temperature. When the set preset temperature is reached, the heater (10) stops heating. The temperature controller (4) can also display the current temperature and the set temperature upper limit value in real time. The ohm display screen (6) is used to display the resistance value of the thermistor in the electronic thermal temperature control sensor corresponding to the current temperature in real time. On the right part of the front side outer shell of the operation chassis, a box door (8) and an observation window (9) located on the box door (8) are arranged. The observation window (9) is provided to ensure the safety of the detection personnel during high-temperature heating. Without opening the box door (8), the detection situation of the test samples in the working chamber can be observed through the observation window (9).

[0008] In an alternative embodiment of the present invention, a thermal insulation layer (17) is arranged around the inside of the operation chassis. The thermal insulation layer (17) is used to isolate the temperature exchange between the inside and outside of the operation chassis, reduce heat loss, and thus maintain a stable temperature inside the operation chassis.

[0009] In an optional embodiment of the present invention, an exhaust valve (7) is provided on the upper surface of the operation chassis, which is used to discharge excess air, maintain the pressure balance inside the operation chassis, and prevent safety problems caused by excessive pressure.

[0010] The embodiment of the present invention provides a test method for a detector of a superconducting electronic thermosensitive temperature control sensor, which is implemented by using a detector of a superconducting electronic thermosensitive temperature control sensor as described in the above embodiment. The method is characterized by including the following steps:

[0011] Step S1: Provide a detector of a superconducting electronic thermosensitive temperature control sensor. After opening the box door (8) of the detector, place the electronic thermosensitive temperature control sensor on the graphene superconducting sheet (13) inside the detector and fix it with the partition bracket (14) inside the detector;

[0012] Step S2: Connect the quick connector wires at both ends of the thermistor inside the electronic thermosensitive temperature control sensor to the measurement terminals of an ohmmeter. The temperature controller of the detector can measure the temperature of the product to be detected, and the ohmmeter can measure the real-time resistance value of the thermistor of the electronic thermosensitive temperature control sensor in the heating state in real time;

[0013] Step S3: Close the box door (8) of the detector, connect the power supply of the detector, and press the heating switch (2), constant temperature switch (1), and air blowing switch (3) of the detector;

[0014] Step S4: Set a rated temperature value on the temperature controller of the detector, and then start heating. Observe that the temperature control dashboard of the detector displays the real-time temperature, and the ohmmeter display of the detector displays the change in the resistance value of the thermistor corresponding to the real-time temperature;

[0015] Step S5: When the temperature is heated to the set rated temperature value, when it is observed that the resistance value on the ohmmeter display no longer changes, record it, and determine whether it is qualified according to the resistance-temperature table of the qualified products specified by the manufacturer.

[0016] In an optional embodiment of the present invention, the voltage range of the power supply line connected to the tester in step S1 is 220V / 50HZ or 380V / 50HZ.

[0017] In an optional embodiment of the present invention, the graphene superconducting sheet in step S1 is used to ensure rapid heat conduction, make the temperature distribution uniform, and reduce or eliminate measurement errors.

[0018] In an optional embodiment of the present invention, the heating switch in step S3 is electrically connected to the heater inside the detector, and the heater is used to heat the inside of the detector.

[0019] In an alternative embodiment of the present invention, the air blower switch in step S3 is electrically connected to the air blower in the detector, and the rotation of the air blower keeps the temperature inside the detector evenly circulated.

[0020] In an alternative embodiment of the present invention, step S5 further includes: when the thermistor in the electronic thermosensitive temperature control sensor reaches the set rated temperature, the circuit connecting the heater is disconnected to stop heating. The current temperature value will be displayed on the temperature controller, and the resistance value of the thermistor at the current temperature will be displayed on the corresponding ohmmeter. The detected resistance-temperature and the resistance-temperature table of the regular thermistor set by the manufacturer are used to determine whether the product is qualified.

[0021] In an alternative embodiment of the present invention, the reasonable product range is that the error between the real-time temperature standard value and the measured value of the thermistor is within the range of -3 to 3 °C, and the error between the real-time resistance standard value and the measured value of the thermistor is within the range of -0.5 to 0.5 KΩ.

[0022] The embodiment of the present invention provides a detector for a superconducting electronic thermosensitive temperature control sensor and its testing method, which has the following beneficial effects:

[0023] (1) The graphene superconducting sheet described in the embodiment of the present invention is a superconducting thin sheet based on graphene material; graphene is a two-dimensional material composed of a single layer of carbon atoms arranged in a hexagonal honeycomb structure, with many unique physical and chemical properties. In the design and manufacture of this detector, after considering the advantages of graphene such as high thermal conductivity, lightness, thinness, softness, corrosion resistance, good electrical properties, and environmental sustainability, it is designed as the most important raw material for the heat-conducting sheet in the detector; the present invention combines the detection technology of a high-precision superconducting electronic thermosensitive temperature control sensor, adopts a series of test and calibration functional devices, improves the test quality of the temperature control sensor, enables the electronic thermosensitive temperature control sensor to provide more accurate and reliable results in various environments after testing, reduces the need for comparison testing, saves time, and reduces interference with enterprise operations, thereby reducing unnecessary economic pressure.

[0024] (2) By using the graphene superconducting sheet, the present invention can conduct heat to the electronic thermosensitive temperature control sensor more quickly and evenly, thereby improving the stability and accuracy of measurement. The graphene superconducting sheet is used to ensure rapid heat conduction and make the temperature distribution uniform, reducing or eliminating measurement errors. The addition of the graphene superconducting sheet greatly improves the response speed of the sensor, making the detection process more rapid and meeting the requirements of modern industrial production for rapid detection. Compared with traditional aluminum plates, the graphene superconducting sheet dissipates heat more slowly and maintains a constant temperature for a longer time. Therefore, the thermistor in the temperature controller placed on the superconducting sheet can maintain a stable state for a longer time, and the data value of the thermistor under the graphene superconducting sheet is more accurate than that under the aluminum plate with faster heat dissipation.

[0025] (3) The present invention is provided with a temperature controller and an ohm display screen, enabling the operator to directly read the real-time temperature and the resistance value of the thermistor, without the need to measure manually to determine the specific value of the thermistor in the thermostat, thus saving labor costs and measurement costs. The design of the temperature setting button and the real-time display screen allows the operator to conveniently set the upper limit threshold of the temperature as needed and automatically stop heating when the set temperature is reached, ensuring the safety and accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 It is a schematic diagram of the external structure of a detector for a superconducting electronic thermosensitive temperature control sensor provided by an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the internal structure of a detector for a superconducting electronic thermosensitive temperature control sensor provided by an embodiment of the present application.

[0029] Figure 3 It is a physical diagram of the appearance of a detector for a superconducting electronic thermosensitive temperature control sensor provided by an embodiment of the present application.

[0030] Figure 4 It is a physical diagram of the inside of a detector for a superconducting electronic thermosensitive temperature control sensor provided by an embodiment of the present application.

[0031] Figure 5 It is a physical diagram of the temperature controller part of a detector for a superconducting electronic thermosensitive temperature control sensor provided by an embodiment of the present application.

[0032] Figure 6 It is the overall circuit diagram designed for the detector provided by an embodiment of the present application.

[0033] Figure 7 It is a flowchart of the test method for a detector for a superconducting electronic thermosensitive temperature control sensor provided by an embodiment of the present application.

[0034] Figure 8 It is a standard resistance-temperature table provided by an embodiment of the present application.

[0035] Figure 9 It is an actual measured resistance-temperature table provided by an embodiment of the present application.

[0036] Figure 10The detection flow chart provided by the embodiment of the present application.

[0037] Figure 11 The flow chart of the PID constant temperature control system provided by the embodiment of the present application.

[0038] Reference numerals: 1 - constant temperature switch; 2 - heating switch; 3 - blower switch; 4 - temperature controller; 5 - side door of the temperature control layer; 6 - ohm display screen; 7 - exhaust valve; 8 - cabinet door; 9 - observation window; 10 - heater; 11 - temperature sensor; 12 - working chamber; 13 - graphene superconducting sheet; 14 - partition bracket; 15 - blower motor; 16 - air duct; 17 - heat insulation layer; 18 - heat dissipation plate; 19 - L-shaped support plate. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0040] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown in the figure, an inspection instrument for a superconducting electronic thermal temperature control sensor is provided in an embodiment of the present invention. The front side housing of the inspection instrument is provided with a switch control section, a temperature controller 4, an ohm display screen 6, a box door 8, and an observation window 9. The switch control section includes a heating switch 2, a constant temperature switch 1, and a blower switch 3. The heating switch 2 is mainly used to perform the heating operation inside the inspection instrument and is directly connected to the heater 10 inside the inspection instrument. The constant temperature switch 1 controls the temperature inside the inspection instrument to keep it within a set constant temperature range. The blower switch 3 inside the inspection instrument is connected to the blower motor 15 to control the opening and closing of the blower 15. The temperature controller 4, also known as a thermostat or temperature controller, mainly monitors and controls the temperature inside the inspection instrument. The temperature control accuracy is 1°C, and the set temperature is a temperature value to be monitored. The real-time temperature of the current electronic thermal temperature control sensor is displayed on the temperature display screen of the temperature controller 4. The temperature display screen of the temperature controller 4 is connected to the temperature sensor 11 inside the inspection instrument. The temperature sensor 11 is placed on the graphene superconducting sheet 13, and can accurately monitor the real-time temperature of the current electronic thermal temperature control sensor, and then display it on the temperature display screen of the temperature controller 4. The temperature control range in the temperature controller 4 is 50 - 250°C. The ohm display screen 6 is used to display the resistance value change of the thermistor in the electronic thermal temperature control sensor at the current temperature in real time. The ohm display screen 6 is connected to the electronic thermal temperature control sensor to be monitored through a detection circuit to detect the resistance value change of the current electronic thermal temperature control sensor in real time. The box door 8 is located on the right side of the front side housing of the inspection instrument. There is a square high-temperature resistant transparent glass window in the middle of the box door 8, which is called the observation window 9.

[0041] Inside the operation chassis of the detector, there are a heater 10, a temperature sensor 11, a working chamber 12, a graphene superconducting sheet 13, a blower 15, an air duct 16, a thermal insulation layer 17, a partition support 14, a heat dissipation plate 18, and an L-shaped support plate 19. The observation window 9 observes the detection sample in the working chamber 12; after opening the box door 8, enter the working chamber 12 where the detection electronic thermosensitive temperature control sensor is placed. The working chamber 12 includes a partition support 14 and a graphene superconducting sheet 13. The partition support 14 is mainly used to fixedly place the electronic thermosensitive temperature control sensor for detection on the graphene superconducting sheet 13; the graphene superconducting sheet 13 can not only conduct heat quickly but also dissipate heat efficiently, greatly saving the heat conduction and dissipation time and also accelerating the overall detection efficiency. Around the working chamber 12, it is surrounded by a thermal insulation layer 17, and the thermal insulation layer 17 effectively isolates the temperature exchange between the inside and outside of the box, preventing heat loss or the influence of external high temperature, thereby maintaining the stability and uniformity of the temperature inside the box. Between the thermal insulation layer 17 and the working chamber 12 on the left side inside the detector, there is a narrow gap called the air duct 16. The design of the air duct 16 enables the hot air to be evenly distributed to all corners of the box body, reducing the temperature gradient and ensuring that the detection sample (electronic thermosensitive temperature control sensor) is subjected to uniform heat during the heating process. That is, an air duct 16 is formed between the L-shaped support plate 19 and the outer shell of one side of the operation chassis, and the air duct 16 is used to guide the air flow to ensure that the air can effectively circulate inside the operation chassis. The temperature sensor 11 is arranged in the air duct 16.

[0042] The heater 10 and the heat dissipation plate 18 are located below the L-shaped support plate 19. The heat dissipation plate 18 is used to evenly disperse the heat generated by the heater 10. The graphene superconducting sheet 13 and the partition bracket 14 are connected to the L-shaped support plate 19. The graphene superconducting sheet 13 serves as a partition for placing the electronic thermosensitive temperature control sensor, accelerating heat conduction. The partition bracket 14 is used to fix the electronic thermosensitive temperature control sensor. The partition bracket 14 and the graphene superconducting sheet 13 are located inside the working chamber 12. The partition bracket 14 is used to fix the item to be detected. The blower 15 is arranged at the bottom of the detector, ensuring that the electronic thermosensitive temperature control sensor placed in the tester can be evenly heated, avoiding local overheating or overcooling. In this embodiment, the heater 10 is located at the bottom inside the chassis. When the heater 10 is heating, in order to prevent the heating temperature from being too high and affecting the damage of the outer wall of the chassis, a heat dissipation plate 18 is specially added above the heater 10. When the temperature inside the detector rises, the heat dissipation plate 18 can transfer the excess heat to the external environment, preventing the internal temperature from being too high and ensuring the safe operation of the detector. The heat dissipation plate 18 also helps to maintain a constant internal temperature, reducing the poor detection effect or damage to the detection sample caused by temperature fluctuations. The heat dissipation plate 18 can also protect the equipment and structure outside the detector chassis from the influence of high temperature, preventing deformation or damage caused by temperature differences. The blower motor 15 is installed at the lower left between the heat insulation layer 17 and the chassis shell in the chassis, and is controlled by the control switch blower switch 3 to start and stop. After the blower motor 15 is turned on, the air inside the working chamber becomes convective. By opening the exhaust valve 7, the air inside the box can be replaced, so that the temperature inside the box can be quickly uniform and quickly dissipated.

[0043] Specifically, the blower 15 consists of: a motor body, a fan, a transmission device, a control system, and a heat dissipation device. Among them, the motor body is the core part of the blower 15, including a rotor, a stator, a housing, etc., responsible for generating a rotational torque to drive the fan to rotate. The fan is the rotating part of the blower 15, usually composed of blades and a shaft. The design of the fan blades affects the rate and direction of air flow to achieve uniform air supply and exhaust inside the detector box. The transmission device includes belts, gears, chains, etc., which are used to transmit the rotational torque of the motor body to the fan to make the fan rotate.

[0044] On the left part of the front side outer shell of the operation chassis, a temperature controller 4 is provided. Below the temperature controller 4, a constant temperature switch button 1, a heating switch button 2, and a blower switch button 3 are provided. Above the temperature controller 4, an ohm display screen 6 is provided. The constant temperature switch button 1 is used to keep the temperature inside the box constant at a value. The heating switch button 2 is used to control the temperature controller 4 to turn on and stop heating; the blower switch button 3 is used to turn on and off the blower 15. The temperature controller 4 sets a preset upper limit threshold for the current test temperature. When the set preset temperature is reached, the heater 10 stops heating. The temperature controller 4 also displays the current temperature and the set temperature upper limit value in real time.

[0045] Specifically, the names and functions of each part in the temperature controller 4 of the high-precision superconducting electronic thermosensitive temperature control sensor detector of the present invention are as follows Figure 6 , the measured value (PV) display is the temperature display screen actually measured inside the detector chassis; the set value (SV) display is the upper limit of the temperature value for heating inside the box set by us; on the left side of the set value (SV) display, there are a heating indicator light and a timing indicator light. The heating indicator light lights up when the tester controls the heating output; the timing indicator light lights up when the temperature inside the box reaches the set temperature after setting the timing time; directly below the set value (SV) display, there are an adjustment key + and an adjustment key -, which are used to increase and decrease the set temperature; on the left side of the adjustment keys, there is a function key (SET), and pressing the function key (SET) can start to adjust and set the timing time.

[0046] Specifically, when setting the temperature, in the state where the test instrument is normally powered on and normally displayed, the upper measured (PV) display screen of the temperature controller 4 displays the real-time detected temperature of the electronic thermosensitive temperature control sensor. Directly pressing the adjustment key + and the adjustment key - can modify the set value on the lower row numerical (SV) display screen.

[0047] Specifically, when setting the heat preservation time and timing setting, press the function key (SET), "ST" is displayed in the upper left corner of the numerical (SV) display, and the heat preservation time is displayed on the display screen. By pressing the adjustment key + and the adjustment key - to modify this heat preservation time value, the unit of this value is minutes, that is, the detector starts timing after reaching the set temperature, stops heating after heat preservation to the value you set, and the longest timing time is 999 minutes. When the timing function does not need to be set, set the value to 0, that is, keep heating and will not stop automatically.

[0048] The ohm display screen 6 is used to display the resistance value of the thermistor in the electronic thermosensitive temperature control sensor corresponding to the current temperature in real time. On the right part of the front side of the outer shell of the operation chassis, there is a box door 8 and an observation window 9 on the box door 8. The observation window 9 is to ensure the safety of the detection personnel during high-temperature heating. Without opening the box door 8, the detection situation of the test samples in the working chamber can be observed through the observation window 9.

[0049] The periphery inside the operation chassis is provided with a heat preservation layer 17, and the heat preservation layer 17 is used to isolate the temperature exchange inside and outside the operation chassis, reduce heat loss, so as to maintain a stable temperature inside the operation chassis. An exhaust valve 7 is provided on the upper surface of the operation chassis, which is used to discharge the excess air, maintain the pressure balance inside the operation chassis, and prevent safety problems caused by excessive pressure. A temperature control layer side door 5 is provided on the left side outer shell of the operation chassis, and the temperature control layer side door 5 is used to store electrical circuits. The temperature control layer side door 5 can be removed to facilitate maintenance and installation. Figure 6The overall circuit diagram designed for the detector provided by the present invention. The voltage range of the power supply line connected to the detector is 220V / 50HZ or 380V / 50HZ.

[0050] The present invention combines the detection technology of a high-precision superconducting electronic thermosensitive temperature control sensor, adopts a series of test and calibration functional devices, improves the test quality of the temperature control sensor, enables the electronic thermosensitive temperature control sensor to provide more accurate and reliable results under various environments after testing, reduces the need for comparison testing, saves time, and reduces the interference to the enterprise operation, thereby reducing unnecessary economic pressure.

[0051] The volume of the detector for the high-precision superconducting electronic thermosensitive temperature control sensor is 25×25×25cm 3 , the power supply voltage is 220V / 50HZ, the temperature control range is between 50 and 250 °C, the temperature control accuracy is 1 °C, the maximum heating power is 500W, the heating temperature range is RT + 10 °C to 250 °C, and the timing heating time can be set, and the timing range is between 1 and 999 minutes.

[0052] After the detector detects the electronic thermosensitive temperature control sensor, after the temperature reaches the set detection temperature, when the numbers in the ohm display screen 6 are stable, record some resistance-temperature values corresponding to the time, that is, obtain Figure 9 the actually measured resistance-temperature table in Figure 8 and compare it with the standard resistance-temperature table in

[0053] Specifically, Figure 8 the standard resistance-temperature table in

[0054]

[0055] Among them, is the resistance value of the thermistor at temperature; is the nominal resistance value of the thermistor at room temperature; The value is an important parameter of the thermistor, The value is not constant, and its size varies depending on the material composition of the thermistor; is of power; Here and refers to Degree means Kelvin temperature. The relationship between Kelvin temperature and Celsius temperature is:

[0056]

[0057] Specifically, the thermistor in the embodiment of the present invention is of negative temperature coefficient. The specified standard resistance-temperature correspondence table is as Figure 8 , which also includes the Figure 9 resistance-temperature table during actual detection specified by the manufacturer.

[0058] An inspection instrument for a superconducting electronic thermosensitive temperature control sensor according to the above embodiment Figure 7 Combined with Figure 10 and Figure 11 , the present invention also provides a test method for an inspection instrument of a superconducting electronic thermosensitive temperature control sensor, including the following steps:

[0059] Step S1: Provide an inspection instrument for a superconducting electronic thermosensitive temperature control sensor. After opening the box door of the inspection instrument, place the electronic thermosensitive temperature control sensor on the graphene superconducting sheet inside the inspection instrument and fix it with the partition bracket inside the inspection instrument;

[0060] Step S2: Connect the quick connector wires at both ends of the thermistor inside the electronic thermosensitive temperature control sensor to the measurement ends of the ohmmeter. The temperature controller of the inspection instrument can measure the temperature of the product to be detected, and the ohmmeter can measure the real-time resistance value of the thermistor of the electronic thermosensitive temperature control sensor in the heating state in real time;

[0061] Step S3: Close the box door of the inspection instrument, turn on the power supply of the inspection instrument, and press the heating switch, constant temperature switch and air blower switch of the inspection instrument;

[0062] Step S4: Set a rated temperature value on the temperature controller of the inspection instrument, and then start heating. Observe: The temperature control instrument panel of the inspection instrument displays the real-time temperature, and the ohmmeter display of the inspection instrument displays the change in the resistance value of the thermistor corresponding to the real-time temperature;

[0063] Step S5: When the temperature is heated to the set rated temperature value, when the resistance value on the ohmmeter display no longer changes, record it, and determine whether it is qualified according to the resistance-temperature table of qualified products specified by the manufacturer.

[0064] Preferably, the voltage range of the power supply line connected to the tester in step S1 is 220V / 50HZ or 380V / 50HZ. The graphene superconducting sheet in step S1 is used to ensure rapid heat conduction, make the temperature distribution uniform, and reduce or eliminate measurement errors. The heating switch in step S3 is electrically connected to the heater in the detector, and the heater is used to heat the inside of the detector. The blower switch in step S3 is electrically connected to the blower in the detector, and the rotation of the blower keeps the temperature inside the detector evenly circulated. Step S5 further includes: when the thermistor in the electronic thermosensitive temperature control sensor reaches the set rated temperature, the circuit connecting it to the heater is disconnected to stop heating. The current temperature value will be displayed on the temperature controller, and the resistance value of the thermistor at the current temperature will be displayed on the corresponding ohmmeter. The detected resistance-temperature and the resistance-temperature table of the regular thermistor set by the manufacturer are used to determine whether the product is qualified. The error between the real-time temperature standard value and the measured value of the thermistor within the range of -3 to 3°C is the reasonable product range, and the error between the real-time resistance standard value and the measured value of the thermistor within the range of -0.5 to 0.5 KΩ is the reasonable product range. Figure 10 is the detection flow chart of the present invention. Figure 11 is the flow chart of the PID constant temperature control system in the present invention.

[0065] In this embodiment, after the detector detects the electronic thermosensitive temperature control sensor, when the temperature reaches the set detection temperature, wait until the numbers on the ohmmeter display 6 are stable, and record some resistance-temperature values corresponding to the time, that is, obtain Figure 9 the actually measured resistance-temperature table in Figure 8 and compare it with the standard resistance-temperature table in

[0066] In summary, although the present invention has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those of ordinary skill in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is subject to the scope defined by the claims.

Claims

1. A detector for a superconducting electronic thermistor temperature control sensor, characterized in that: The detector comprises an operating case, wherein a heater (10), a temperature sensor (11), a graphene superconducting sheet (13), a blower (15), an air duct (16), a thermal insulation layer (17), a partition support (14), a heat sink (18) and an L-shaped support plate (19) are arranged in the operating case, wherein the air duct (16) is formed between the L-shaped support plate (19) and a shell on one side of the operating case, and the air duct (16) is used to guide air flow to ensure that air can effectively circulate inside the operating case; the temperature sensor (11) is arranged in the air duct (16); the heater (10) and the heat sink (18) are arranged in the air duct (16); The heat plate (18) is located below the L-shaped support plate (19), and the heat dissipation plate (18) is used to evenly disperse the heat generated by the heater (10); the graphene superconducting sheet (13) and the partition bracket (14) are connected to the L-shaped support plate (19), the graphene superconducting sheet (13) is used as a partition for placing the electronic thermistor temperature control sensor to accelerate heat conduction, and the partition bracket (14) is used to fix the electronic thermistor temperature control sensor; the blower (15) is arranged at the bottom of the detector, and is used to ensure that the electronic thermistor temperature control sensor placed in the tester can be heated evenly to avoid local overheating or overcooling; The left part of the front shell of the operating box is provided with a temperature controller (4), a constant temperature switch button (1), a heating switch button (2) and a blast switch button (3) are provided below the temperature controller (4), an ohm display screen (6) is provided above the temperature controller (4), the constant temperature switch button (1) is used to keep the temperature in the box constant at a value; the heating switch button (2) is used to control the temperature controller (4) to start and stop heating; the blast switch button (3) is used to turn on and off the blower (15); the temperature controller (4) is used to set a preset upper limit threshold of the current test temperature, and when the upper limit threshold is reached, ... When the preset temperature is reached, the heater (10) stops heating, and the temperature controller (4) also displays the current temperature and the set upper temperature limit in real time; the ohm display screen (6) is used to display the resistance value of the thermistor in the electronic thermistor temperature control sensor corresponding to the current temperature in real time; the right side of the front shell of the operating box is provided with a box door (8) and an observation window (9) located on the box door (8); the observation window (9) is used to ensure the safety of the test personnel when high-temperature heating is performed, so that the test situation of the test product in the working room can be observed through the observation window (9) without opening the box door (8) to ensure the safety of the test personnel.

2. The detector of a superconducting electronic thermistor temperature control sensor according to claim 1, characterized in that: A thermal insulation layer (17) is arranged around the operating chassis, and the thermal insulation layer (17) is used to isolate the temperature exchange inside and outside the operating chassis, reduce heat loss, and thus maintain a stable temperature inside the operating chassis.

3. The detector of a superconducting electronic thermistor temperature control sensor according to claim 2, characterized in that: An exhaust valve (7) is provided on the upper surface of the operating case to exhaust excess air, thereby maintaining a pressure balance in the operating case and preventing safety problems caused by excessive pressure.

4. A method for testing a detector of a superconducting electronic thermistor temperature control sensor, implemented by using a detector of a superconducting electronic thermistor temperature control sensor as claimed in claim 3, characterized in that: The following steps are involved: Step S1, providing a detector with a superconducting electronic thermistor temperature control sensor, opening the door (8) of the detector, placing the electronic thermistor temperature control sensor on a graphene superconducting sheet (13) in the detector, and fixing it with a partition bracket (14) in the detector; Step S2, connecting the quick connector wires at both ends of the thermistor inside the electronic thermistor temperature control sensor to the measuring end of the ohmmeter, the temperature controller of the detector can measure the temperature of the product to be tested, and the ohmmeter can measure the real-time resistance value of the thermistor of the electronic thermistor temperature control sensor in the heating state in real time; Step S3, closing the door (8) of the detector, turning on the power of the detector, and pressing the heating switch (2), the constant temperature switch (1) and the blast switch (3) of the detector; Step S4, set a rated temperature value on the temperature controller of the detector, then start heating, and observe: the temperature control instrument panel of the detector displays the real-time temperature, and the ohm display of the detector displays the change in resistance of the thermistor corresponding to the real-time temperature; Step S5, when the temperature is heated to the set rated temperature value, the resistance value on the ohm display is observed to no longer change, and then recorded, and the resistance-temperature table corresponding to the qualified product specified by the manufacturer is used to determine whether it is qualified.

5. The method for testing a detector of a superconducting electronic thermistor temperature control sensor according to claim 4, characterized in that: The voltage range of the power line connected to the tester in step S1 is 220V / 50HZ or 380V / 50HZ.

6. The method for testing a detector of a superconducting electronic thermistor temperature control sensor according to claim 4, characterized in that: The graphene superconducting sheet in step S1 is used to ensure rapid heat conduction and uniform temperature distribution, thereby reducing or eliminating measurement errors.

7. The method for testing a detector of a superconducting electronic thermistor temperature control sensor according to claim 4, characterized in that: The heating switch in step S3 is electrically connected to a heater in the detector, and the heater is used to heat the inside of the detector.

8. The method for testing a detector of a superconducting electronic thermistor temperature control sensor according to claim 4, characterized in that: The blower switch in step S3 is electrically connected to the blower in the detector, and the blower rotates to keep the temperature in the detector uniform.

9. The method for testing a detector of a superconducting electronic thermistor temperature control sensor according to claim 4, characterized in that: Step S5 also includes: when the thermistor in the electronic thermistor temperature control sensor reaches the set rated temperature, the circuit connected to the heater is disconnected and heating is stopped, the current temperature value will be displayed on the temperature controller, and the corresponding ohm display will display the resistance value of the thermistor at the current temperature. The detected resistance-temperature and the resistance-temperature table of the regular thermistor set by the manufacturer are used to determine whether the product is qualified.

10. A detector testing method for a superconducting electronic thermistor temperature control sensor according to claim 4 or 9, characterized in that: The error between the real-time temperature standard value and the measured value of the thermistor is in the range of -3 to 3°C, which is a reasonable product range. The error between the real-time resistance standard value and the measured value of the thermistor is in the range of -0.5 to 0.5KΩ, which is a reasonable product range.

Images