A Thermostat Temperature Calibration Test Method

Abstract

The present invention relates to a thermostat temperature calibration test method, which adopts a dry thermostat temperature calibration device. The device includes a test base, at least one group of flexible thermocouple films, a compensating wire group, a temperature data recording and transmitting device, and a cloud server. Among them, the flexible thermocouple film is connected to the test base by a connecting piece and a socket, the compensating wire group is electrically connected to the test base, the compensating wire group is electrically connected to the temperature data recording and transmitting device, and the temperature data recording and transmitting device is connected to the cloud server through a wireless Internet network for transmission. In the present invention, the temperature measuring element fits more closely to the surface of the heating metal block of the dry thermostat. By adopting the Internet + technology, the original mode that engineers must be present for detection is changed. Through a mobile terminal, measurement parameters can be set in real time, and the measurement process can be observed in real time, having a wide application prospect.

Description

Technical Field

[0001] The present invention belongs to the technical field of temperature calibration of dry thermostats and relates to a temperature calibration test method for thermostats. Background Art

[0002] With the increasing demand for device portability and miniaturization, the demand for temperature detection and calibration in flexible small spaces is also increasing. For example, in the medical field, dry thermostats have replaced the traditional water bath heating method and are used in multiple fields such as enzyme preparation reactions, serum inactivation tests, Rb blood sample research, and cholesterol detection; in the environmental monitoring field, dry thermostats are used for quantitative detection of chemical oxygen demand and have wide application value. Temperature detection of dry thermostats requires temperature calibration of a circular metal thermostat block within a small gap range. Currently, for temperature measurement on flexible surfaces or in spaces, thermocouple wires or surface-mounted thermocouple patches are generally used for testing, and there are certain errors in the results. For objects to be measured that need to be closely attached such as dry thermostats, the outside of the thermocouple wire is protected by an insulating layer, and the wire diameter is more than 1 mm, which cannot ensure complete attachment to the dry thermostat to be measured and is likely to cause measurement errors. Existing surface-mounted thermocouples solidify the original thermocouple wire into a thermocouple patch, and the thermocouple patch in the temperature measurement area has a certain thickness and cannot completely fit the surface of the object to be measured, resulting in errors in the test results and an unsatisfactory response speed. In addition, due to the introduction of the adhesive, such thermocouples cannot be reused and are also likely to contaminate the object to be measured and cannot be used for flexible material objects to be measured. Therefore, a temperature calibration device for dry thermostats is urgently needed to be developed. Summary of the Invention

[0003] To solve the above technical deficiencies, the present invention proposes the following technical solutions: a temperature calibration device and test method for a dry thermostat, including a flexible thermocouple film structure and its preparation method.

[0004] A temperature calibration device for a dry thermostat includes a test base, at least one group of flexible thermocouple films, a compensating wire group, a temperature data recording and transmitting device, and a cloud server;

[0005] Among them, the flexible thermocouple film is connected to the test base by a connecting piece and a socket, the compensating wire group is electrically connected to the test base, the compensating wire group is electrically connected to the temperature data recording and transmitting device, and the temperature data recording and transmitting device is connected to the cloud server through wireless Internet networking for transmission.

[0006] The test base includes a base, a sliding connecting rod, at least one group of flexible thermocouple film connectors, a transverse sliding connecting rod, a fixed scale, a pressing piece support, a pressing piece, a compensating wire group, and a data transmission connection interface; the test base is made of an insulating non-metallic material.

[0007] The sliding connecting rod, fixed scale, compensating wire group and data transmission connection interface are fixed to the base;

[0008] The base is made of a silicon plate;

[0009] The sliding connecting rods, namely the anode sliding connecting rod and the cathode sliding connecting rod, are both made of a common thermocouple material; one end of the anode sliding connecting rod and the cathode sliding connecting rod is connected to the transverse sliding connecting rod by a track, and the other end is electrically connected to the compensating wire group and the data transmission connection interface. The sliding connecting rod is connected to the transverse sliding connecting rod and can slide on the sliding connecting rod. The positions of the sliding connecting rod and the transverse sliding connecting rod can be adjusted automatically or manually according to the aperture position and quantity of the actual dry thermostat to be measured; the anode sliding connecting rod is connected to the compensating wire group and the data transmission connection interface through the thermocouple anode connecting wire group; the cathode sliding connecting rod is connected to the compensating wire group and the data transmission connection interface through the thermocouple cathode connecting wire group.

[0010] The flexible thermocouple film connector is made of an insulating non-metallic material and a silicon plate. The flexible thermocouple film connector is connected to the transverse sliding connecting rod by a track and can slide on the transverse sliding connecting rod. The flexible thermocouple film connector is connected to the pressing piece support by a thread and is connected to the flexible thermocouple film by a socket and a connecting piece. According to the size of the dry thermostat to be measured and the test requirements of the heating hole position, the number and position of the connected flexible thermocouple films are determined, and the position data measured by the fixed scale is transmitted and recorded in the temperature data recording and transmitting device through the compensating wire group and the data transmission connection interface.

[0011] The determination of the number and position of the connected flexible thermocouple films according to the size of the dry thermostat to be measured and the test requirements of the heating hole position specifically includes:

[0012] 1) When the number of test holes of the dry thermostat is less than or equal to 4*4, it is advisable to place the flexible thermocouple film at the center test hole position;

[0013] 2) When the number of test holes on one side of the dry thermostat is more than 4, one flexible thermocouple film needs to be additionally placed at each of the two end test holes on this side;

[0014] 3) When the number of test holes on both sides of the dry thermostat is more than 4, one flexible thermocouple film needs to be additionally placed at each of the four end test holes around.

[0015] Each flexible thermocouple thin film connector corresponds to a set of anode connecting wires and cathode connecting wires. Each transverse sliding connecting rod contains at least one set of anode connecting wires and cathode connecting wires inside. The flexible thermocouple thin film connector is connected to the compensating wire group and the data transmission connection interface through the sliding connecting rod and the transverse sliding connecting rod. One end of the anode connecting wire is connected to the anode connecting piece of the flexible thermocouple thin film by means of a socket and a connecting piece, and the other end is connected to the anode sliding connecting rod by means of an orbit. One end of the cathode connecting wire is connected to the cathode connecting piece of the flexible thermocouple thin film by means of a socket and a connecting piece, and the other end is connected to the cathode sliding connecting rod by means of an orbit. The anode sliding connecting rod, the thermocouple anode connecting wire group, and the anode connecting wire are prepared from the same general anode material for thermocouples. The cathode sliding connecting rod, the thermocouple cathode connecting wire group, and the cathode connecting wire are prepared from the same general cathode material for thermocouples. The number of anode connecting wires, cathode connecting wires, and flexible thermocouple thin film connectors remains the same.

[0016] The position data measured by the fixed scale is transmitted through the compensating wire group and the data transmission connection interface and recorded in the temperature data recording and transmitting device;

[0017] The pressing piece is made of an aluminum sheet with strong heat resistance and plasticity. The pressing piece is used to make the temperature measuring area of the flexible thermocouple thin film be in full contact with the heating hole of the measured dry thermostat.

[0018] The temperature measuring area refers to the overlapping part of the flexible thermocouple anode and the flexible thermocouple cathode.

[0019] The pressing piece support has threads and is made of stainless steel. It is used to connect the flexible thermocouple thin film connector, and the length of the pressing piece and the pressing piece support can be adjusted. The pressing piece support and the pressing piece are connected by fasteners.

[0020] Or, the test base 1 can also adopt the following structure:

[0021] It includes a base, several groups of flexible thermocouple thin film connection sockets, a fixer, fixing holes, a fixed scale, a pressing piece, a pressing piece support, a compensating wire group, and a data transmission connection interface. The test base is made of an insulating non-metallic material. Several groups of flexible thermocouple thin film connection sockets, fixing holes, a fixed scale, a compensating wire group, and a data transmission connection interface are fixed on the base. According to the size of the measured dry thermostat and the test requirements of the heating hole position, the number and position of the flexible thermocouple thin films to be connected are determined, and the position data measured by the fixed scale is transmitted and recorded in the temperature data recording and transmitting device through the compensating wire group and the data transmission connection interface. The pressing piece is used to make the temperature measuring area of the flexible thermocouple thin film be in full contact with the heating hole of the measured dry thermostat. The pressing piece support has threads and is used to connect the fixer, and the length of the pressing piece support and the pressing piece can be adjusted. The pressing piece and the pressing piece support are connected by fasteners.

[0022] The flexible thermocouple film includes a flexible substrate, a flexible insulating layer, a flexible thermocouple anode, a flexible thermocouple cathode, a protective layer, an anode connecting piece, a cathode connecting piece, and a connecting piece fixing member.

[0023] The flexible substrate is made of a flexible metal material with high temperature resistance and fast heat conduction. The flexible insulating layer is made of a high temperature resistant insulating material. The flexible thermocouple anode and the flexible thermocouple cathode are prepared from common thermocouple electrode materials. The material of the anode connecting piece is the same as that of the flexible thermocouple anode, and the material of the cathode connecting piece is the same as that of the flexible thermocouple cathode. Ensure that no other material is introduced during the connection process to avoid temperature measurement errors. The protective layer is made of a high temperature resistant insulating material. The connecting piece fixing member is made of an insulating non-metallic material.

[0024] The flexible insulating layer is attached to the surface of the flexible substrate by screen printing, spraying, or plasma sputtering.

[0025] The flexible thermocouple anode and the flexible thermocouple cathode are prepared on the flexible insulating layer by plasma sputtering or screen printing. The flexible thermocouple anode and the flexible thermocouple cathode are prepared in sequence, and the flexible thermocouple anode and the flexible thermocouple cathode partially overlap. The overlapping part is the thermal connection area of the flexible thermocouple film, that is, the temperature measurement area.

[0026] The protective layer is prepared by plasma method, screen printing, or spraying, covering the flexible thermocouple anode and the flexible thermocouple cathode, and exposing the thermal connection area.

[0027] Both sides of the flexible thermocouple film are connected to the connecting pieces, that is, the flexible thermocouple anode is connected to the anode connecting piece, and the flexible thermocouple cathode is connected to the cathode connecting piece, and both are firmly connected through the connecting piece fixing member.

[0028] The compensating wire group includes a group of compensating wires and two compensating wire interfaces. The material of the compensating wire anode is the same as that of the flexible thermocouple anode, and the material of the compensating wire cathode is the same as that of the flexible thermocouple cathode. The flexible thermocouple anode and the flexible thermocouple cathode are prepared from common thermocouple electrode materials. One end of the compensating wire group is electrically connected to the test base, and the other end is electrically connected to the temperature data recording and transmitting device.

[0029] The temperature data recording and transmitting device includes: a compensating wire group interface, a temperature and humidity probe, a signal transceiver module, and a data processing and storage module. The temperature data recording and transmitting device has both data processing and storage functions and signal transceiver functions. The temperature data recording and transmitting device contains a temperature and humidity probe inside, which can record ambient temperature and humidity data, and can also compare the temperature data of each flexible thermocouple film. According to the size of the dry thermostat, the number of temperature measurement channels of the flexible thermocouple film can be opened, a temperature measurement point position map can be generated, and the data of each temperature measurement channel can be recorded. All relevant data is recorded in the data processing and storage module and sent to the cloud server for recording and storage.

[0030] The cloud server includes a user authentication module, a control module, a storage module, and a report generation module, which operate through software. Through the cloud server, the inspection engineer can, according to the inspection requirements, set the measurement parameters in real time and observe the measurement process in real time through the mobile terminal.

[0031] The temperature data recording and transmitting device and the cloud server can also be replaced by a temperature data recorder to achieve on-site real-time observation and recording of data. The compensating wire group is directly connected to the temperature data recorder, and the real-time temperature of each flexible thermocouple film is observed and recorded through the temperature data recorder, but the functions of system self-check and remote observation cannot be achieved.

[0032] The present invention also discloses a method for calibrating and testing the temperature of a dry thermostat, which is as follows:

[0033] 1. Check whether the dry thermostat temperature calibration device is working properly. Generally, the power-on preheating time is 30 minutes.

[0034] 2. Connection: Connect and fix the flexible thermocouple film of the dry thermostat temperature calibration device to the test base, and connect the compensating wire group and the temperature data recording and transmitting device.

[0035] 3. System self-check: Detect the temperature data of the flexible thermocouple film in each channel and compare it with the temperature data in the temperature data recording and transmitting device 4, and make a record. When the deviation exceeds ±0.3 °C, the inspection engineer's mobile terminal will receive a reminder of sensor abnormality.

[0036] 4. Place the flexible thermocouple film: Fit the flexible thermocouple film into the test hole of the dry thermostat to be calibrated. When the number of test holes of the dry thermostat is less than or equal to 4*4, it is advisable to place the flexible thermocouple film at the center test hole position; when the number of test holes on one side of the dry thermostat is more than 4, one flexible thermocouple film needs to be additionally placed at the test holes at both ends of this side; when the number of test holes on both sides of the dry thermostat is more than 4, one flexible thermocouple film needs to be additionally placed at the test holes at the four ends around. Through the pressing piece of the test base, make the temperature measurement area of the flexible thermocouple film in full contact with the heating hole of the dry thermostat to be measured. According to the number and position of the test holes of the dry thermostat to be measured, automatically / manually adjust the positions of the flexible thermocouple film connector and the horizontal sliding connecting rod.

[0037] 5. Data collection: Turn on the temperature data recording and transmitting device of the dry block calibrator, connect it to the cloud server, and the detection engineer sets the data sampling interval (the time interval between every two samplings) through the cloud. After the dry block to be measured reaches the set temperature for 30 minutes, start data sampling, record the temperature data of each flexible thermocouple film, and calculate the average temperature, temperature deviation, temperature uniformity, temperature fluctuation and other data of the data measured by each flexible thermocouple film through the cloud server. Record the positional relationship and distance between each flexible thermocouple film during the test through the fixed scale of the test base.

[0038] 6. Data export: After the recording is completed, turn off the data sampling through the cloud server, and then generate a calibration report as needed.

[0039] 7. System re-inspection: Re-detect the temperature data of each channel of the flexible thermocouple film and compare it with the temperature data in the temperature data recording and transmitting device, and make records. When the temperature deviation exceeds ±0.3 °C, the detection engineer's mobile terminal will receive a reminder of sensor abnormality. Ensure that the calibration device works normally and the data is reliable before and after calibrating the dry block.

[0040] 8. Test completion: Turn off the dry block calibrator, and after the temperature of the dry block returns to room temperature, take out the installed flexible thermocouple film to complete the test.

[0041] The beneficial effects of the present invention are as follows: The temperature measuring element fits better on the surface of the heating metal block of the dry block. In the form of a connecting rod, the positions of the flexible thermocouple film and the fixing pressure piece can be adjusted according to dry blocks of different sizes and specifications, with strong compatibility. The flexible thermocouple film adopts a structure of a metal substrate, a flexible insulating layer, a thermocouple anode, a thermocouple cathode, and a protective layer; while ensuring flexibility, the metal substrate guarantees good heat conductivity and improves the temperature response speed of the dry block calibrator. The protective layer exposes the thermal connection area, protecting the thermocouple anode and thermocouple cathode while ensuring low error and high sensitivity in the temperature measurement area. Using the Internet + technology, it changes the original mode that engineers must be present for detection. Through the mobile terminal, measurement parameters can be set in real time, and the measurement process can be observed in real time, with broad application prospects. Description of the Drawings

[0042] Figure 1 is a schematic structural diagram of the dry block calibrator of the present invention.

[0043] Figure 2 is a schematic diagram of the test base of the present invention.

[0044] Figure 3 is a schematic connection diagram of the sliding connecting rod, the transverse sliding connecting rod (9), the compensating wire group and the data transmission connection interface of the test base of the present invention.

[0045] Figure 4 It is a schematic diagram of the fixed pressing piece of the test base of the present invention.

[0046] Figure 5 It is a schematic diagram of the flexible thermocouple thin film structure of the present invention.

[0047] Figure 6 It is a schematic diagram of the compensating wire group structure of the present invention.

[0048] Figure 7 It is a schematic diagram of the structure of the temperature data recording and transmitting device of the present invention.

[0049] Figure 8 It is a flowchart of the test method of the present invention.

[0050] Figure 9 It is a schematic diagram of the layout of the flexible thermocouple thin film of the dry thermostat (3*5 holes) of the present invention.

[0051] Figure 10 It is a schematic diagram of the structure of the test base of the present invention.

[0052] Figure 11 It is a schematic diagram of the fixed pressing piece in the test base of the present invention.

[0053] Figures 1-11 Among them: 1 - test base, 2 - flexible thermocouple thin film, 3 - compensating wire group, 4 - temperature data recording and transmitting device, 5 - cloud server, 6 - base, 7 - sliding connecting rod, 8 - flexible thermocouple thin film connector, 9 - horizontal sliding connecting rod, 10 - fixed scale, 11 - pressing piece support, 12 - pressing piece, 13 - compensating wire group and data transmission connection interface, 14 - flexible substrate, 15 - flexible insulating layer, 16 - flexible thermocouple anode, 17 - flexible thermocouple cathode, 18 - protective layer, 19 - anode connecting piece, 20 - cathode connecting piece, 21 - connecting piece fixing part, 22 - compensating wire, 23 - compensating wire interface, 24 - compensating wire group interface, 25 - temperature and humidity probe, 26 - signal transceiver module, 27 - temperature data processing and storage module, 28 - anode sliding connecting rod, 29 - cathode sliding connecting rod, 30 - thermocouple anode connecting wire group, 31 - thermocouple cathode connecting wire group, 32 - anode connecting wire, 33 - cathode connecting wire, 34 - flexible thermocouple thin film connection socket, 35 - fixer, 36 - fixing hole. Detailed implementation manners

[0054] Combined with the following specific embodiments and the attached drawings, the invention will be further described in detail. The processes, conditions, experimental methods, etc. for implementing the present invention, except for the specifically mentioned content below, are all common knowledge and well-known common sense in the art, and the present invention has no particularly restricted content.

[0055] Embodiment

[0056] A temperature calibration device for a dry thermostat, comprising a test base 1, at least one group of flexible thermocouple films 2, a compensating wire group 3, a temperature data recording and transmitting device 4, and a cloud server 5;

[0057] Among them, the flexible thermocouple film 2 is connected to the test base 1 by a connecting piece and a socket. The compensating wire group 3 is electrically connected to the test base 1. The compensating wire group 3 is electrically connected to the temperature data recording and transmitting device 4. The temperature and humidity probe 25 is electrically connected to the temperature data recording and transmitting device 4. The temperature data recording and transmitting device 4 is connected to the cloud server 5 through wireless Internet networking for transmission.

[0058] The test base 1 includes a base 6, a sliding connecting rod 7, at least one group of flexible thermocouple film connectors 8, a lateral sliding connecting rod 9, a fixed scale 10, a pressing piece support 11, a pressing piece 12, a compensating wire group and a data transmission connection interface 13. The base 6 is made of a silicon plate. The sliding connecting rod 7 is divided into an anode sliding connecting rod 28 and a cathode sliding connecting rod 29, which are prepared from a common thermocouple material. The anode of the compensating wire group 3 is made of copper and the cathode is made of a common thermocouple material. Each flexible thermocouple film connector 8 corresponds to a group of anode connecting wires 32 and cathode connecting wires 33. Each lateral sliding connecting rod 9 contains at least one group of anode connecting wires 32 and cathode connecting wires 33, and is connected to the compensating wire group and the data transmission connection interface 13 through the sliding connecting rod 7 and the lateral sliding connecting rod 9. One end of the anode sliding connecting rod 28 and the cathode sliding connecting rod 29 is connected to the lateral sliding connecting rod 9 by a track and the other end is electrically connected to the compensating wire group and the data transmission connection interface 13. The flexible thermocouple film connector 8 is connected to the lateral sliding connecting rod 9 by a track. The flexible thermocouple film connector 8 is made of a silicon plate. The flexible thermocouple film connector 8 is connected to the pressing piece support 11 by a thread. The pressing piece 12 is made of an aluminum sheet with strong heat-resistant plasticity. The pressing piece support 11 is made of stainless steel. The flexible thermocouple film connector 8 is connected to the flexible thermocouple film 2 by a socket and a connecting piece. According to the size of the dry thermostat to be measured and the test requirements for the position of the heating hole, the number and position of the connected flexible thermocouple films 2 are determined. The position data measured by the fixed scale 10 is transmitted and recorded in the temperature data recording and transmitting device 4 through the compensating wire group and the data transmission connection interface 13. The pressing piece 12 is used to make the temperature measurement area of the flexible thermocouple film 2 fully contact with the heating hole of the dry thermostat to be measured. The pressing piece support 11 has a thread for connecting the fixator 35, and the lengths of the pressing piece 12 and the pressing piece support 11 can be adjusted. The pressing piece support 11 and the pressing piece 12 are connected by a fastener.

[0059] The sliding connecting rod 7 is divided into an anode sliding connecting rod 28 and a cathode sliding connecting rod 29. The anode sliding connecting rod 28 is connected to the compensating wire group and the data transmission connection interface 13 through the thermocouple anode connecting wire group 30; the cathode sliding connecting rod 29 is connected to the compensating wire group and the data transmission connection interface 13 through the thermocouple cathode connecting wire group 31. Each transverse sliding connecting rod 9 includes at least one group of anode connecting wires 32 and cathode connecting wires 33. One end of the anode connecting wire 32 is connected to the flexible thermocouple film anode connecting piece 19 by means of a socket and a connecting piece, and the other end is connected to the anode sliding connecting rod 28 by means of a track. One end of the cathode connecting wire 33 is connected to the flexible thermocouple film cathode connecting piece 20 by means of a socket and a connecting piece, and the other end is connected to the cathode sliding connecting rod 29 by means of a track. The anode sliding connecting rod 28, the thermocouple anode connecting wire group 30, and the anode connecting wire 32 are made of copper. The cathode sliding connecting rod 29, the thermocouple cathode connecting wire group 31, and the cathode connecting wire 33 are made of constantan. Each group of transverse sliding connecting rods has 3 anode connecting wires 32, 3 cathode connecting wires 33, and 3 flexible thermocouple film connectors 8, and there are 3 groups of horizontal sliding connecting rods 9 in total.

[0060] The number and position of the connected flexible thermocouple films are determined according to the size of the dry thermostat to be measured and the test requirements for the position of the heating holes, which specifically include the following three situations:

[0061] 1) When the number of test holes of the dry thermostat is less than or equal to 4×4, it is advisable to place the flexible thermocouple film at the central test hole position;

[0062] 2) When the number of test holes on one side of the dry thermostat is more than 4, one flexible thermocouple film needs to be additionally placed at each of the two ends of the test holes on that side;

[0063] 3) When the number of test holes on both sides of the dry thermostat is more than 4, one flexible thermocouple film needs to be additionally placed at each of the four ends around.

[0064] The test base 1 can also be:

[0065] It includes a base 6, several groups of flexible thermocouple film connection sockets 34, a fixer 35, a fixing hole 36, a fixed scale 10, a pressing piece support 11, a pressing piece 12, a compensating wire group and a data transmission connection interface 13. The test base is made of insulating non-metallic materials. The base 6 is made of a silicon plate. The anode of the flexible thermocouple connection socket 34 is made of copper, the cathode is made of constantan, the fixer 35 is made of insulating screws, the size of the fixing hole 36 is 1mm * 3mm, the pressing piece 12 is made of an aluminum sheet with strong heat resistance and plasticity, and the pressing piece support 11 is made of stainless steel. According to actual needs, 5 * 5 groups of flexible thermocouple film connection sockets 34 are set, and the spacing between each group is 20mm. The flexible thermocouple film connection sockets 34, the fixing hole 36, the fixed scale 10, the compensating wire group and the data transmission connection interface 13 are fixed on the base 6. According to the size of the dry thermostat to be measured and the test requirements for the position of the heating hole, the number and position of the connected flexible thermocouple films 2 are determined, and the position data measured by the fixed scale 10 is transmitted and recorded in the temperature data recording and transmitting device 4 through the compensating wire group and the data transmission connection interface 13. The pressing piece 12 is used to make the flexible thermocouple film 2 in full contact with the heating hole of the dry thermostat to be measured. The pressing piece support 11 has threads for connecting the fixer 35, and the lengths of the pressing piece support 11 and the pressing piece 12 can be adjusted. The pressing piece 12 and the pressing piece support 11 are connected by fasteners.

[0066] The flexible thermocouple film 2 includes a flexible substrate 14, a flexible insulating layer 15, a flexible thermocouple anode 16, a flexible thermocouple cathode 17, a protective layer 18, an anode connecting piece 19, a cathode connecting piece 20, and a connecting piece fixing part 21.

[0067] The flexible substrate 14 is made of an aluminum sheet, the flexible insulating layer 15 is made of polyimide material, the flexible thermocouple anode 16 is made of copper, the flexible thermocouple cathode 17 is made of constantan material, and the flexible insulating layer 15 is printed on the surface of the flexible substrate 14 by screen printing.

[0068] The flexible thermocouple anode 16 and the flexible thermocouple cathode 17 are prepared on the flexible insulating layer 15 by plasma sputtering. The flexible thermocouple anode 16 and the flexible thermocouple cathode 17 are prepared in sequence, and the flexible thermocouple anode 16 and the flexible thermocouple cathode 17 partially overlap. The overlapping part is the thermal connection area of the flexible thermocouple, that is, the temperature measurement area;

[0069] The plasma sputtering preparation conditions of the flexible thermocouple film 2 are determined as follows: 1) Copper-nickel alloy (constantan) film: In an argon environment of 1 Pa, direct current sputtering is carried out at 150 W for 40 minutes to obtain a metal film layer with a thickness of (900 - 1000) nm; 2) Copper film: In an argon environment of 1 Pa, direct current sputtering is carried out at 90 W for 40 minutes to obtain a metal film layer with a thickness of 1000 nm.

[0070] The protective layer 18 is made of polyimide material and prepared by spraying method. It covers the flexible thermocouple anode 16 and the flexible thermocouple cathode 17, and exposes the thermal connection area.

[0071] Both sides of the flexible thermocouple film 2 are connected with connecting pieces. The anode connecting piece 19 is made of copper and the cathode connecting piece 20 is made of constantan. Ensure that no other material is introduced during the connection process to avoid temperature measurement errors.

[0072] The connecting pieces 19, 20 and the flexible thermocouple film 2 are connected by fasteners.

[0073] The compensating wire group 3 includes compensating wires 22 and two compensating wire interfaces 23. The compensating wire anode is made of copper and the compensating wire cathode is made of constantan. One end of the compensating wire group 3 is electrically connected to the test base 1, and the other end is electrically connected to the temperature data recording and transmitting device 4.

[0074] The temperature data recording and transmitting device 4 includes: a compensating wire group interface 24, a temperature and humidity probe 25, a signal transceiver module 26, and a data processing and storage module 27. The temperature data recording and transmitting device 4 has both data processing and storage functions and signal transceiver functions. A temperature and humidity probe 25 is provided inside the temperature data recording and transmitting device 4, which can record ambient temperature and humidity data and compare the temperature data of each flexible thermocouple film 2 at the same time. According to the size of the dry thermostat, the number of flexible thermocouple film temperature measurement channels can be opened to generate a temperature measurement point position map and record the data of each measurement channel. All relevant data are recorded in the data processing and storage module 27 and sent to the cloud server 5 for recording and storage.

[0075] Through the cloud server 5, the inspection engineer can, according to the inspection requirements, through the mobile terminal, set the measurement parameters in real time and observe the measurement process in real time. The cloud server 5 includes a user authentication module, a control module, a storage module, and a report generation module, which are connected by software.

[0076] For example, if you calibrate a 3*5-hole dry thermostat, the specific steps are as follows: 1. Check whether the dry thermostat temperature calibration device is working properly. The general power-on preheating time is 30 minutes. 2. Connection: Connect and fix the flexible thermocouple film 2 of the dry thermostat temperature calibration device to the test base 1, and connect the compensation wire group 3. 3. System self-test: Detect the temperature data of the flexible thermocouple film 2 of each channel and compare it with the temperature data in the temperature data recording and transmitting device 4, and make a record. When the deviation exceeds ±0.3℃, the mobile terminal of the inspection engineer will receive a reminder of sensor abnormality. 4. Place the flexible thermocouple film 2: fit the flexible thermocouple film 2 to the test hole of the dry thermostat to be calibrated. When the number of test holes of the dry thermostat is less than or equal to 4*4, it is advisable to place the flexible thermocouple film 2 at the center test hole; when the number of test holes on one side of the dry thermostat is greater than 4, it is necessary to add a flexible thermocouple film 2 to each of the test holes at both ends of the side; when the number of test holes on both sides of the dry thermostat is greater than 4, it is necessary to add a flexible thermocouple film 2 to each of the test holes at all four ends. The dry thermostat to be calibrated has 3*5 holes, so 3 flexible thermocouple films 2 are arranged. Through the test base pressing sheet 12, the temperature measurement area of the flexible thermocouple film 2 is fully contacted with the heating hole of the dry thermostat to be tested. According to the number and position of the test holes of the dry thermostat to be tested, the device automatically adjusts the position of the flexible thermocouple film connector 8 and the horizontal sliding connecting rod 9. 5. Data collection: Turn on the temperature data recording and transmitting device 4 of the dry thermostat temperature calibration device, connect it to the cloud server 5, and the testing engineer sets the data sampling interval (the time interval between every 2 samplings) through the cloud. After the tested dry thermostat reaches the set temperature for 30 minutes, turn on the data sampling, record the temperature data of each flexible thermocouple film 2, and calculate the temperature average value, temperature deviation, temperature uniformity and temperature fluctuation of the data measured by each flexible thermocouple film 2 through the cloud server 5. Through the test base scale 10, record the position relationship and distance between each flexible thermocouple film 2 during the test. 6. Data export: After the recording is completed, turn off the data sampling through the cloud server 5, and then generate a calibration report as needed. 7. System re-inspection: Re-detect the temperature data of the flexible thermocouple film 2 of each channel and compare it with the temperature data in the temperature data recording and transmitting device 4, and make a record. When the deviation exceeds ±0.3℃, the testing engineer's mobile terminal will receive a reminder of sensor abnormality. Ensure that the calibration device works normally before and after the dry thermostat calibration and the data is reliable. 8. Test completion: turn off the dry thermostat temperature calibration device, wait for the dry thermostat temperature to return to room temperature, take out the installed flexible thermocouple film 2, and complete the test.

[0077] The protection content of the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the inventive concept, changes and advantages that can be thought of by those skilled in the art are included in the present invention and are protected by the attached claims.

Claims

1. A thermostat temperature calibration test method, characterized in that, The method is used for the temperature calibration test of a dry thermostat, and a dry thermostat temperature calibration device is adopted. The dry thermostat temperature calibration device includes: a test base (1); The test base (1) includes a base (6), a sliding connecting rod (7), at least one group of flexible thermocouple film connectors (8), a lateral sliding connecting rod (9), a fixed scale (10), a pressing piece support (11), a pressing piece (12), a compensating wire group and a data transmission connection interface (13); The sliding connecting rod (7) is the anode sliding connecting rod (28) and the cathode sliding connecting rod (29); one ends of the anode sliding connecting rod (28) and the cathode sliding connecting rod (29) are connected to the lateral sliding connecting rod (9) by a track, and the other ends are electrically connected to the compensating wire group and the data transmission connection interface (13); the anode sliding connecting rod (28) is connected to the compensating wire group and the data transmission connection interface (13) through a thermocouple anode connecting wire group (30); the cathode sliding connecting rod (29) is connected to the compensating wire group and the data transmission connection interface (13) through a thermocouple cathode connecting wire group (31); The method includes the following steps: 1) Check whether the dry thermostat temperature calibration device works normally, and the power-on preheating time is 30 minutes; 2) Connect and fix the flexible thermocouple film (2) of the dry thermostat temperature calibration device to the test base (1), and connect the compensating wire group (3) and the temperature data recording and transmitting device (4); 3) Detect the temperature data of each channel of the flexible thermocouple film (2) and compare it with the temperature data in the temperature data recording and transmitting device (4), and make a record. If the deviation exceeds ±0.3 °C, the detection engineer's mobile terminal will receive a reminder of sensor abnormality; 4) Fit the flexible thermocouple film (2) into the test hole of the dry thermostat to be calibrated. Through the pressing piece (12) of the test base (1), make the temperature measurement area of the flexible thermocouple film (2) fully contact with the heating hole of the dry thermostat to be measured; according to the number and position of the test holes of the dry thermostat to be measured, automatically / manually adjust the positions of the flexible thermocouple film connector and the lateral sliding connecting rod; 5) Turn on the temperature data recording and transmitting device (4) of the dry thermostat temperature calibration device to connect it to the cloud server (5). The detection engineer sets the time interval for every 2 data samplings through the cloud. After the dry thermostat to be measured reaches the set temperature for 30 minutes, start data sampling, record the temperature data of each flexible thermocouple film (2), calculate the temperature average value, temperature deviation, temperature uniformity and temperature fluctuation data of the data measured by each flexible thermocouple film (2) through the cloud server (5), and record the positional relationship and distance between each flexible thermocouple film during the test through the fixed scale (10) of the test base (1); 6) After the recording is completed, turn off the data sampling through the cloud server (5), and then generate a calibration report; 7) Re-detect the temperature data of each channel's flexible thermocouple film (2) and compare it with the temperature data in the temperature data recording and transmitting device (4), and make a record. If the deviation exceeds ±0.3 °C, the detection engineer's mobile terminal will receive a reminder of sensor abnormality; 8) Turn off the dry thermostat temperature calibration device. After the temperature of the dry thermostat returns to room temperature, take out the installed flexible thermocouple film (2) to complete the test.

2. The thermostat temperature calibration test method according to claim 1, characterized in that, The dry thermostat temperature calibration device further includes: at least one group of flexible thermocouple films (2), compensating wire group (3), temperature data recording and transmitting device (4), cloud server (5); The test base (1) is connected to the flexible thermocouple film (2) by a connecting piece and a socket; the compensating wire group (3) is electrically connected to the test base (1); the compensating wire group (3) is electrically connected to the temperature data recording and transmitting device (4); the temperature data recording and transmitting device (4) is wirelessly transmitted to the cloud server (5); The test base (1) is made of insulating non-metallic material; the sliding connecting rod (7), fixed scale (10), compensating wire group and data transmission connection interface (13) are fixed to the base (6); The sliding connecting rod (7) is made of a common thermocouple material; The positions of the sliding connecting rod (7) and the transverse sliding connecting rod (9) are automatically or manually adjusted according to the aperture position and quantity of the actual dry thermostat to be measured; The flexible thermocouple film connector (8) is made of insulating non-metallic material and made of a silicon plate, and is connected to the transverse sliding connecting rod (9) by a track and can slide on the transverse sliding connecting rod (9); the flexible thermocouple film connector (8) is connected to the compensating wire group and the data transmission connection interface (13) through the sliding connecting rod (7) and the transverse sliding connecting rod (9); The transverse sliding connecting rod (9) includes at least one group of anode connecting wires (32) and cathode connecting wires (33), and each flexible thermocouple film connector (8) corresponds to a group of anode connecting wires (32) and cathode connecting wires (33); one end of the anode connecting wire (32) is connected to the flexible thermocouple film anode connecting piece (19) by a socket and a connecting piece, and the other end is connected to the anode sliding connecting rod (28) by a track; one end of the cathode connecting wire (33) is connected to the flexible thermocouple film cathode connecting piece (20) by a socket and a connecting piece, and the other end is connected to the cathode sliding connecting rod (29) by a track; the anode sliding connecting rod (28), thermocouple anode connecting wire group (30), and anode connecting wire (32) are made of the same common anode material of the thermocouple; the cathode sliding connecting rod (29), thermocouple cathode connecting wire group (31), and cathode connecting wire (33) are made of the same common cathode material of the thermocouple; the number of anode connecting wires (32), cathode connecting wires (33), and flexible thermocouple film connectors (8) are the same; The position data measured by the fixed scale (10) is transmitted through the compensating wire group and the data transmission connection interface (13) and recorded in the temperature data recording and transmitting device (4). The pressing piece support (11) has threads and is made of stainless steel. It is used to connect the flexible thermocouple film connector (8), adjust the lengths of the pressing piece (12) and the pressing piece support (11), and the pressing piece (12) and the pressing piece support (11) are connected by fasteners; the flexible thermocouple film connector (8) and the flexible thermocouple film (2) are connected by a socket and a connecting piece. The pressing piece (12) is made of an aluminum sheet with strong heat-resistant plasticity, and the temperature measurement area of the flexible thermocouple film (2) is in full contact with the heating hole of the dry thermostat to be measured.

3. The thermostat temperature calibration test method according to claim 1, characterized in that, The test base (1) includes a base (6), at least one group of flexible thermocouple film connection sockets (34), a fixer (35), a fixing hole (36), a fixed scale (10), a pressing piece (12), a pressing piece support (11), a compensating wire group and a data transmission connection interface (13). The test base (1) is made of an insulating non-metallic material. The flexible thermocouple film connection sockets (34), the fixing holes (36), the fixed scale (10), the compensating wire group and the data transmission connection interface (13) are fixed to the base (6). The number and positions of the flexible thermocouple films (2) are determined according to the size of the dry thermostat to be measured and the test requirements for the positions of the heating holes. The position data measured by the fixed scale (10) is transmitted through the compensating wire group and the data transmission connection interface (13) and recorded in the temperature data recording and transmitting device (4). The pressing piece (12) makes the temperature measurement area of the flexible thermocouple film (2) in full contact with the heating hole of the dry thermostat to be measured. The fixer (35) is connected to the thread on the pressing piece support (11) to adjust the lengths of the pressing piece support (11) and the pressing piece (12), and the pressing piece (12) and the pressing piece support (11) are connected by fasteners.

4. The thermostat temperature calibration test method according to claim 1, characterized in that, The flexible thermocouple film (2) includes a flexible substrate (14), a flexible insulating layer (15), a flexible thermocouple anode (16), a flexible thermocouple cathode (17), a protective layer (18), an anode connecting piece (19), a cathode connecting piece (20), and a connecting piece fixing member (21).

5. The thermostat temperature calibration test method according to claim 4, wherein The flexible substrate (14) is made of a flexible metal material with high temperature resistance and fast heat conduction. The flexible insulating layer (15) is made of a high temperature resistant insulating material. The flexible thermocouple anode (16) and the flexible thermocouple cathode (17) are prepared from common thermocouple electrode materials. The material of the anode connecting piece (19) is the same as that of the flexible thermocouple anode (16), and the material of the cathode connecting piece (20) is the same as that of the flexible thermocouple cathode (17). The protective layer (18) is made of a high temperature resistant insulating material. The connecting piece fixing member (21) is connected to the flexible substrate (14), the flexible insulating layer (15), the flexible thermocouple anode (16) or the flexible thermocouple cathode (17), the anode connecting piece (19) or the cathode connecting piece (20) by fasteners; the connecting piece fixing member (21) is made of an insulating non-metallic material.

6. The thermostat temperature calibration test method according to claim 4, wherein The flexible insulating layer (15) is attached to the surface of the flexible substrate (14) by screen printing, spraying, or plasma sputtering. The flexible thermocouple anode (16) and the flexible thermocouple cathode (17) are prepared on the flexible insulating layer (15) by plasma sputtering or screen printing. The flexible thermocouple anode (16) and the flexible thermocouple cathode (17) are prepared in sequence, and the flexible thermocouple anode (16) and the flexible thermocouple cathode (17) partially overlap. The overlapping part is the thermal connection area of the flexible thermocouple film, that is, the temperature measurement area. The protective layer (18) is prepared by plasma method, screen printing, or spraying, covering the flexible thermocouple anode (16) and the flexible thermocouple cathode (17), and exposing the thermal connection area. The flexible thermocouple anode (16) is connected to the anode connecting piece (19), and the flexible thermocouple cathode (17) is connected to the cathode connecting piece (20), both of which are tightly connected by the connecting piece fixing member (21).

7. The thermostat temperature calibration test method according to claim 1, characterized in that The number and position of the flexible thermocouple films (2) are determined according to the size of the connected dry incubator to be measured and the test requirements of the heating hole position, specifically including: 1) When the number of test holes of the dry incubator is less than or equal to 4*4, the flexible thermocouple film is placed at the central test hole position; 2) When the number of test holes on one side of the dry incubator is more than 4, one flexible thermocouple film is additionally placed at the test holes at both ends of this side; 3) When the number of test holes on both sides of the dry incubator is more than 4, one flexible thermocouple film is additionally placed at the test holes at the four ends around.

8. The thermostat temperature calibration test method according to claim 4, characterized in that, The compensating wire group (3) includes a group of compensating wires (22) and two compensating wire interfaces (23). The anode of the compensating wire is made of the same material as the flexible thermocouple anode (16), and the cathode of the compensating wire is made of the same material as the flexible thermocouple cathode (17). The flexible thermocouple anode (16) and the flexible thermocouple cathode (17) are prepared from common thermocouple electrode materials.

9. The thermostat temperature calibration test method according to claim 1, characterized in that, The temperature data recording and transmitting device (4) includes: a compensating wire group interface (24), a temperature and humidity probe (25), a signal transceiver module (26), and a data processing and storage module (27). Inside the temperature data recording and transmitting device (4), there is a temperature and humidity probe (25). According to the size of the dry thermostat, the number of temperature measurement channels of the flexible thermocouple film is opened to generate a temperature measurement point position map, and the data of each temperature measurement channel is recorded. All relevant data is recorded in the data processing and storage module (27) and sent to the cloud server (5) for recording and storage.

10. The thermostat temperature calibration test method according to claim 1, wherein The cloud server (5) includes a user authentication module, a control module, a storage module, and a report generation module, which are operated through software. And / or The temperature data recording and transmitting device (4) is replaced by a temperature data recorder with the cloud server (5). The compensating wire group (3) is directly connected to the temperature data recorder, and the real-time temperature of each flexible thermocouple film (2) is observed and recorded through the temperature data recorder, but the system self-check and remote observation functions cannot be realized.

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