CN112113612A - Inductive film temperature-sensing detection device and temperature-sensing detection method using same - Google Patents
Inductive film temperature-sensing detection device and temperature-sensing detection method using same Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 189
- 230000001939 inductive effect Effects 0.000 title claims description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 90
- 230000006698 induction Effects 0.000 claims abstract description 72
- 230000035945 sensitivity Effects 0.000 claims abstract description 39
- 238000009413 insulation Methods 0.000 claims abstract description 17
- 239000010408 film Substances 0.000 claims description 283
- 238000000034 method Methods 0.000 claims description 33
- 239000010409 thin film Substances 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 15
- 239000002937 thermal insulation foam Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 6
- 230000001965 increasing effect Effects 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000011896 sensitive detection Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 230000004044 response Effects 0.000 description 66
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- 238000012360 testing method Methods 0.000 description 8
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910003336 CuNi Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The invention relates to the technical field of film temperature detection, and particularly discloses an induction film temperature detection device and a temperature detection method adopting the same. The sensing film temperature-sensing detection device comprises a constant temperature and humidity box; the heating device is arranged inside the constant temperature and humidity box and is used for heating the induction film; the heat insulation assembly is arranged on the heating device and is surrounded to form a positioning part, and the positioning part is matched with the vertically placed induction film; the temperature detection assembly is arranged in the constant temperature and humidity box and is used for detecting the temperature of the induction film; and the resistance detection element is arranged in the constant temperature and humidity box and is used for detecting the resistance of the induction film. When the sensing film temperature sensing detection device is used for detecting the sensing film, the condition that the sensing film is heated unevenly in actual use can be simulated, and the sensing film with higher sensitivity can be detected.
Description
Technical Field
The invention relates to the technical field of film temperature detection, in particular to an induction film temperature detection device and a temperature detection method adopting the same.
Background
The induction film is widely applied to the fields of mobile phone pressure sensing, medical machinery, automobiles, health monitoring machinery and the like. The related art provides a novel induction film, the front surface of the induction film structure is formed by cross stacking and connecting Cu or CuNi to form circuit conduction, and a Cu shield block is added on the back surface to shield back signal interference.
When the temperature sensing detection is carried out on the sensing film, the sensing film is flatly placed on the platform in the related art, then the platform is heated to enable the sensing film to be gradually heated, the resistance value change of the sensing film under different temperature environments is compared, and the corresponding resistance value signal is transmitted to the main board to be processed. However, the prior art is too ideal, the whole surface of the sensing film is heated to a uniform temperature, which is different from the actual use environment of the sensing film, the transmission and processing of resistance signals are easy to make mistakes, and the temperature sensitivity of the sensing film is weak.
Disclosure of Invention
The invention discloses a temperature-sensitive detection device for an induction film and a temperature-sensitive detection method adopting the same, which can effectively simulate the actual use environment of the induction film and can better detect the induction film with higher sensitivity.
In order to achieve the above object, an embodiment of the present invention discloses an inductive film temperature sensing detection apparatus, including:
a constant temperature and humidity chamber;
the heating device is arranged inside the constant temperature and humidity box and is used for heating the induction film;
the heat insulation assembly is arranged on the heating device and is surrounded to form a positioning part, and the positioning part is matched with the vertically placed induction film;
the temperature detection assembly is arranged in the constant temperature and humidity box and is used for detecting the temperature of the induction film; and
and the resistance detection element is arranged in the constant temperature and humidity box and is used for detecting the resistance of the induction film.
When the sensing film temperature sensing detection device is used for detecting the sensing film, the sensing film is vertically placed at the positioning part, then the heating device is used for heating the sensing film, and the resistance value change conditions of the sensing film at different temperatures are detected by the temperature detection assembly and the resistance detection element. In this in-process, the whole relatively stable environment that is in of response film, and the bottom that is close to heating device of response film at first is heated by heating device, then up transmits the heat to the top of response film again, the inhomogeneous condition of being heated when can effectively simulating response film in-service use can detect out the higher response film of sensitivity, promotes the market competition of response film. Meanwhile, the sensing film temperature sensing detection device can test and analyze the resistance change of the sensing film with higher sensitivity under different temperature differences in advance, and form a database by using the data. When actually carrying out temperature sensing to the response film and detecting, only need place the response film that needs detect in location portion department, reuse heating device to heat the response film, utilize resistance detection element and temperature detect component to the temperature and the resistance of response film simultaneously, match this testing result with the database median that obtains in advance again, can detect out the higher response film of sensitivity fast.
As an alternative embodiment, in the embodiment of the present invention, the insulation assembly includes at least one piece of insulation foam, wherein when the insulation foam is one piece, the positioning portion is provided on the insulation foam; when the heat insulation foam is two or more than two, the positioning part is formed by surrounding the two or more than two heat insulation foams. This thermal-insulated foam not only can play thermal-insulated effect, can also play the support positioning action to responding to the film, simple structure, and can prevent to respond to film and external environment and carry out the heat exchange, and then the response film detection device's that improves detection efficiency and detection precision.
As an alternative implementation, in an embodiment of the present invention, the temperature detection assembly includes a first detection member and a second detection member, the first detection member is located at the top end of the thermal insulation assembly, and the second detection member is located at the bottom end of the thermal insulation assembly. According to the invention, the temperatures of the two ends with the largest temperature difference of the induction film are respectively detected by the first detection piece and the second detection piece, so that the detection precision of the temperature detection assembly on the induction film can be ensured.
As an optional implementation manner, in an embodiment of the present invention, the sensing film temperature-sensing detection device further includes a controller, and the controller is installed on the constant temperature and humidity chamber and is in communication connection with the heating device, the temperature detection assembly, and the resistance detection element; the controller is used for controlling the heating device to enable the induction film to be naturally cooled after being heated to a preset temperature or enable the temperature of the induction film to rise at a constant speed in a preset interval; the controller detects the sensitivity of the induction film according to signals transmitted by the temperature detection assembly and the resistance detection element.
When the temperature sensing detection is needed to be carried out on the sensing film, the sensing film is firstly placed on the positioning portion, after the sensing film is placed, the heating device is controlled by the controller, the sensing film is naturally cooled after being heated to a preset temperature or the temperature of the sensing film rises at a constant speed in a preset interval, the temperature detection assembly is ensured to sense and carry out temperature detection in time, the phenomenon that the temperature of the sensing film is too fast to cause the reaction of the temperature detection assembly to be unable to follow is avoided, and the detection precision of the temperature detection assembly is improved. In the process of detecting the temperature of the induction film by the temperature detection assembly, the resistance of the induction film is detected by the resistance detection element, the corresponding detection result is transmitted to the controller, and the controller can compare signals transmitted by the temperature detection assembly and the resistance detection element with a preset database in the controller, so that the induction film with high sensitivity can be quickly detected.
According to another aspect of the present invention, an embodiment of the present invention further discloses a temperature sensing method using the sensing film temperature sensing apparatus, where the sensing film temperature sensing apparatus is the above sensing film temperature sensing apparatus, and the sensing method includes: 101: vertically placing the induction film on the positioning part in the constant temperature and humidity box; 102: heating the induction film by using the heating device, detecting the temperature of the induction film by using the temperature detection assembly, and detecting the resistance of the induction film at the corresponding temperature by using the resistance detection element; step 103: and judging the sensitivity of the induction film according to the values detected by the temperature detection assembly and the resistance detection element.
When the sensing film temperature sensing detection method is used for detecting the sensing film, the sensing film is vertically placed at the positioning part, then the heating device is used for heating the sensing film, and the resistance value change conditions of the sensing film at different temperatures are detected by the temperature detection assembly and the resistance detection element. In this in-process, the whole relatively stable environment that is in of response film, and the bottom that is close to heating device of response film at first is heated by heating device, then up transmits the heat to the top of response film again, the inhomogeneous condition of being heated when can effectively simulating response film in-service use can detect out the higher response film of sensitivity, promotes the market competition of response film. Meanwhile, the sensing film temperature sensing detection method can test, simulate and analyze the resistance change of the sensing film with higher sensitivity under different temperature differences in advance, and form a database by using the data. When actually carrying out temperature sensing to the response film and detecting, only need place the response film that needs detect in location portion department, reuse heating device to heat the response film, utilize resistance detection element and temperature detect component to the temperature and the resistance of response film simultaneously, match this testing result with the database median that obtains in advance again, can detect out the higher response film of sensitivity fast.
As an alternative implementation, in an embodiment of the present invention, the step 102 includes: heating the induction film to 46-50 ℃ by using the heating device and then naturally cooling; in the cooling process, the temperature detection assembly is used for detecting the temperature of the induction film, and meanwhile, the resistance detection element is used for detecting the resistance of the induction film at the corresponding temperature. The induction film is heated to a preset temperature by the heating device and then naturally cooled, so that the actual working condition of the induction film can be simulated, and the temperature detection precision of the induction film is improved.
As an alternative implementation, in an embodiment of the present invention, the step 102 includes: heating the induction film by using the heating device so as to enable the temperature of the induction film to rise at a constant speed in a preset interval; in the rising process, the temperature detection assembly is used for detecting the temperature of the induction film, and meanwhile, the resistance detection element is used for detecting the resistance of the induction film at the corresponding temperature. The mode of enabling the temperature of the induction film to rise at a constant speed in a preset interval can simulate the actual working condition of the induction film, and the temperature sensing detection precision of the induction film is improved.
As an alternative implementation, in the embodiment of the present invention, the predetermined interval is 42 ℃ to 46 ℃, so that the actual working condition of the sensing film can be simulated.
As an optional implementation manner, in the embodiment of the present invention, in the process of uniformly raising the temperature of the sensing thin film within the predetermined interval by using the heating device, the temperature of the sensing thin film is raised by 0.4 ℃ to 0.6 ℃ per minute, so as to avoid that the temperature of the sensing thin film changes too fast to cause the temperature detection assembly to fail to respond.
As an alternative implementation manner, in the embodiment of the present invention, in the step 103, a controller is used to detect the sensitivity of the sensing film according to the signals transmitted by the temperature detecting component and the resistance detecting element. In the detection process, the temperature detection assembly and the resistance detection element can transmit the detection result to the controller, and the controller can compare the signals transmitted by the temperature detection assembly and the resistance detection element with a preset database in the controller, so that the induction film with high sensitivity can be quickly detected.
Compared with the prior art, the sensing film temperature detection device and the temperature detection method adopting the same have the following beneficial effects:
when the sensing film temperature sensing detection device is used for detecting the sensing film, the sensing film is vertically placed at the positioning part, then the heating device is used for heating the sensing film, and the resistance value change conditions of the sensing film at different temperatures are detected by the temperature detection assembly and the resistance detection element. In this in-process, the whole relatively stable environment that is in of response film, and the bottom that is close to heating device of response film at first is heated by heating device, then up transmits the heat to the top of response film again, the inhomogeneous condition of being heated when can effectively simulating response film in-service use, and then can detect out the response film that sensitivity is higher, promotes the market competition of response film.
Meanwhile, the sensing film temperature sensing detection device can test and analyze the resistance change of the sensing film with higher sensitivity under different temperature differences in advance, and form a database by using the data. When actually carrying out temperature sensing to the response film and detecting, only need place the response film that needs detect in location portion department, reuse heating device to heat the response film, utilize resistance detection element and temperature detect component to the temperature and the resistance of response film simultaneously, match this testing result with the database median that obtains in advance again, can detect out the higher response film of sensitivity fast.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a front view of a sensing film temperature sensing apparatus according to one embodiment of the present invention;
fig. 2 is a flowchart of a temperature sensing method using an inductive film temperature sensing apparatus according to a second embodiment of the present invention.
Icon: 10. a constant temperature and humidity chamber; 20. a heating device; 30. a temperature detection assembly; 31. a first detecting member; 32. a second detecting member; 40. an insulating assembly; 41. a thermal insulating foam; 42. a positioning part; 50. a resistance detection element; 60. a controller; 70. sensing the film.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the particular nature and configuration of which may be the same or different, and not intended to indicate or imply the relative importance or importance of the indicated device, element, or component.
As mentioned in the background art, when the temperature sensing detection is performed on the sensing thin film, in the related art, the sensing thin film is flatly placed on the platform, and then the platform is heated to heat the sensing thin film one by one, so as to compare the resistance value changes of the sensing thin film in different temperature environments, and transmit the corresponding resistance value signal to the main board for processing. However, the prior art is too ideal, the whole surface of the sensing film is heated to a uniform temperature, which is different from the actual use environment of the sensing film, the transmission and processing of resistance signals are easy to make mistakes, and the temperature sensitivity of the sensing film is weak. Therefore, the sensing film temperature sensing detection method and the sensing film temperature sensing detection device can effectively simulate the resistance value change of the sensing film in the non-uniform heating state in actual use, and can better detect the sensing film with higher sensitivity.
The following detailed description is made with reference to the accompanying drawings.
Example one
Referring to fig. 1, fig. 1 is a front view of the sensing film temperature-sensing detecting device in the present embodiment. The sensing film temperature-sensing detection device comprises a constant temperature and humidity box 10, a heating device 20, a temperature detection assembly 30, a resistance detection element 50 and a heat insulation assembly 40.
Wherein, the heating device 20 is arranged inside the constant temperature and humidity chamber 10 for heating the induction film 70; the temperature detection assembly 30 is arranged in the constant temperature and humidity chamber 10 and is used for detecting the temperature of the sensing film 70; the resistance detection element 50 is arranged in the constant temperature and humidity chamber 10 for detecting the resistance of the sensing film 70; the heat insulation assembly 40 is disposed on the heating device 20 and encloses a positioning portion 42, and the positioning portion 42 is matched with the vertically placed sensing film 70.
It is understood that the sensing film 70 placed vertically in the present embodiment is relatively horizontally placed, and the vertical placement refers to a placement manner in which the end surface of the sensing film 70 is brought into contact with the heating device 20 and the length direction of the sensing film 70 is perpendicular to the heating device 20.
When the sensing film 70 is detected by using the sensing film temperature sensing detection device in this embodiment, the sensing film 70 is vertically placed at the positioning portion 42, then the heating device 20 is used to heat the sensing film 70, and the resistance change condition of the sensing film 70 at different temperatures is detected by using the temperature detection assembly 30 and the resistance detection element 50. In this process, response film 70 is whole to be in a relatively stable environment, and the bottom that is close to heating device 20 of response film 70 is at first heated by heating device 20, then up transmits the heat to the top of response film 70 again, can effectively simulate response film 70 and be heated inhomogeneous condition when in actual use, and then can detect out the response film 70 that sensitivity is higher, promote response film 70's market competition.
Meanwhile, by the action of the sensing film temperature-sensing detection device in this embodiment, the resistance change of the sensing film 70 with higher sensitivity at different temperature differences can be tested and simulated and analyzed in advance, and a database can be formed by using the data. When the sensing film 70 is actually subjected to temperature sensing detection, the sensing film 70 to be detected only needs to be placed at the positioning portion 42, the heating device 20 is used for heating the sensing film 70, the resistance detection element 50 and the temperature detection assembly 30 are used for detecting the temperature and the resistance of the sensing film 70, and the detection result is matched with the value in the database obtained in advance, so that the sensing film 70 with higher sensitivity can be quickly detected.
In a specific embodiment of the present invention, the constant temperature and humidity chamber 10 has a box structure, and may have a cubic shape, a rectangular parallelepiped shape, a prism shape, or the like, as long as it can form a relatively sealed space and can accommodate the heating device 20, the temperature detection assembly 30, the resistance detection element 50, and the heat insulation assembly 40.
In order to take and place the sensing film 70, the constant temperature and humidity chamber 10 in this embodiment is provided with an opening and a shutter (not shown) for opening or closing the opening, and when the sensing film 70 needs to be taken and placed, the shutter only needs to be moved to open the opening. When the sensing film 70 is subjected to temperature sensing detection, the opening is closed by the baffle plate, so that the sensing film 70 can be ensured to be in a relatively stable environment, and the sensitivity of the sensing film 70 in temperature sensing detection is further ensured. It is understood that the shutter in this embodiment can be opened and closed by manual control, and can be automatically controlled by other combinations of a controller and a driving device, and other modifications under the concept of the present invention are within the scope of the present invention.
Further, the heating device 20 in this embodiment includes a heating platform, which is a flat plate structure for conveniently carrying the temperature detecting component 30, the resistance detecting element 50 and the heat insulating component 40, specifically, the flat plate structure in this embodiment is a rectangular flat plate, and may also be a triangular flat plate, a circular flat plate, an oval flat plate or other special-shaped flat plate, as long as it is a flat plate capable of carrying the temperature detecting component 30, the resistance detecting element 50 and the heat insulating component 40.
More specifically, the heating platform in this embodiment is provided with the coil that generates heat inside, and this coil that generates heat passes through the wire and is connected with external power supply, simple structure, the realization of being convenient for.
Referring again to FIG. 1, insulation assembly 40 in this embodiment includes a piece of insulation foam 41, in which case locator 42 may be provided with locating holes formed in insulation foam 41. Actually when carrying out the temperature sensing to response film 70 and detecting, thermal-insulated foam 41 not only can play thermal-insulated effect, can also play the support positioning action to response film 70, and simple structure, and can prevent to respond to film 70 and external environment and carry out the heat exchange, and then improve response film detection device's in this embodiment detection efficiency and detection precision.
In another embodiment of the present invention, the insulation assembly 40 includes two insulation foams 41, the two insulation foams 41 are spaced apart from each other on the heating device 20, and the positioning portion 42 is formed on the heating device 20. In this embodiment, this location portion 42 is a location clearance, actually carries out the temperature sensing to response film 70 and detects time, and thermal-insulated foam 41 not only can play thermal-insulated effect, can also play the support positioning effect to response film 70, and simple structure, and can prevent to respond to film 70 and external environment and carry out the heat exchange, and then improve the detection efficiency and the detection precision of response film detection device in this embodiment.
In other embodiments of the present invention, the heat insulation assembly 40 may further include three or more heat insulation foams 41, and the positioning portion 42 is formed by surrounding three or more heat insulation foams 41, in which the positioning portion 42 is a groove structure to facilitate positioning and heat insulation of the sensing film 70.
Further, the insulating foam 41 in the present embodiment may be replaced by an insulating wood board or other structures, and any other modifications within the scope of the present invention are also within the scope of the present invention.
In a specific embodiment of the present invention, the temperature detecting assembly 30 includes a first detecting member 31 and a second detecting member 32, wherein the first detecting member 31 is located at the top end of the heat insulation assembly 40 for detecting the top temperature of the sensing film 70, and the second detecting member 32 is located at the bottom end of the heat insulation assembly 40 for detecting the bottom temperature of the sensing film 70. In this embodiment, the first detecting member 31 and the second detecting member 32 are used to detect the temperatures at the two ends of the sensing film 70 with the largest temperature difference, so as to ensure the detection accuracy of the temperature detecting assembly 30 on the sensing film 70. Alternatively, the first detecting member 31 and the second detecting member 32 in the present embodiment are temperature sensors.
It is understood that, in other embodiments of the present invention, the temperature detecting assembly 30 may further include three or more detecting members, and when the temperature detecting assembly 30 includes three or more detecting members, the three or more detecting members are uniformly arranged along the height direction of the positioning portion 42, so that the temperature of the sensing film 70 can be detected more accurately.
Further, the resistance detection element 50 in this embodiment includes a multimeter, which can not only detect the resistance of the sensing film 70, but also monitor the voltage change of the sensing film 70, and can detect the sensing film 70 with higher sensitivity more accurately.
The sensing film temperature-sensing detection device in this embodiment further includes a controller 60, the controller 60 is installed on the constant temperature and humidity chamber 10 and is in communication connection with the heating device 20, the temperature detection assembly 30 and the resistance detection element 50, wherein the controller 60 is configured to control the heating device 20 to enable the sensing film 70 to be naturally cooled after being heated to a predetermined temperature or enable the temperature of the sensing film 70 to rise at a constant speed in a predetermined interval; the controller 60 controls the heating temperature of the heating device 20, and the controller 60 detects the sensitivity of the sensing film 70 according to the signals transmitted from the temperature detecting member 30 and the resistance detecting element 50.
In a specific embodiment of the present invention, when the temperature sensing detection of the sensing film 70 is required, the sensing film 70 is firstly placed on the positioning portion 42, and after the sensing film 70 is placed, the controller 60 is used to control the heating device 20, so that the heating device 20 is rapidly heated to 46 ℃ to 50 ℃, for example, 46 ℃, 48 ℃ and 50 ℃, and can simulate the working condition environment of the sensing film 70 during use, and then is naturally cooled to 42 ℃. In the cooling process of the induction film 70, the temperature detection assembly 30 can timely induce and carry out temperature detection, so that the phenomenon that the temperature detection assembly 30 cannot react due to the fact that the temperature of the induction film 70 changes too fast is avoided, and the detection precision of the temperature detection assembly 30 is guaranteed. In the process of detecting the temperature of the sensing film 70 by the temperature detection unit 30, the resistance of the sensing film 70 is detected by the resistance detection element 50. The temperature detection assembly 30 and the resistance detection element 50 can transmit the detection result thereof to the controller 60, and the controller 60 can compare the signals transmitted by the temperature detection assembly 30 and the resistance detection element 50 with a database preset in the controller 60, thereby rapidly detecting and obtaining the sensing film 70 with high sensitivity.
In another specific embodiment of the present invention, when the temperature sensing detection of the sensing film 70 is required, the sensing film 70 is firstly placed on the positioning portion 42, and after the sensing film 70 is placed, the controller 60 is used to control the heating device 20, so that the heating device 20 is rapidly heated to 42 ℃, and then heated to 42 ℃ to 46 ℃. So that the temperature of the sensing film 70 rises at a constant speed, specifically: the temperature of the sensing film 70 is raised by 0.4 to 0.6 deg.c per minute, which may be, for example, 0.4, 0.5, and 0 deg.c. In the rising process, the temperature detection assembly 30 can timely sense and carry out temperature detection, the phenomenon that the temperature of the sensing film 70 is too fast to follow up due to the fact that the temperature detection assembly 30 cannot react is avoided, and the detection precision of the temperature detection assembly 30 is guaranteed. In the process of detecting the temperature of the sensing film 70 by the temperature detection unit 30, the resistance of the sensing film 70 is detected by the resistance detection element 50. The temperature detection assembly 30 and the resistance detection element 50 can transmit the detection result thereof to the controller 60, and the controller 60 can compare the signals transmitted by the temperature detection assembly 30 and the resistance detection element 50 with a database preset in the controller 60, thereby rapidly detecting and obtaining the sensing film 70 with high sensitivity.
Further, the controller 60 in this embodiment includes a display screen for displaying the values detected by the temperature detecting assembly 30 and the resistance detecting element 50, which is convenient for the operator to read.
According to the structure, when the sensing film temperature sensing detection device detects the sensing film, the sensing film is vertically placed at the positioning part, then the heating device is used for heating the sensing film, and the resistance value change condition of the sensing film at different temperatures is detected by the temperature detection assembly and the resistance detection element. In this in-process, the whole relatively stable environment that is in of response film, and the bottom that is close to heating device of response film at first is heated by heating device, then up transmits the heat to the top of response film again, the inhomogeneous condition of being heated when can effectively simulating response film in-service use can detect out the higher response film of sensitivity, promotes the market competition of response film.
Meanwhile, through the effect of the sensing film temperature sensing detection device in the embodiment, the resistance change of the sensing film with higher sensitivity under different temperature differences can be tested, simulated and analyzed in advance, and a database is formed by using the data. When actually carrying out temperature sensing to the response film and detecting, only need place the response film that needs detect in location portion department, reuse heating device to heat the response film, utilize resistance detection element and temperature detect component to the temperature and the resistance of response film simultaneously, match this testing result with the database median that obtains in advance again, can detect out the higher response film of sensitivity fast.
Example two
Referring to fig. 1 and fig. 2 together, fig. 2 is a flowchart of a temperature sensing method using a sensing film temperature sensing apparatus according to the present embodiment.
The temperature sensing method in this embodiment is implemented by using the sensing thin-film temperature sensing apparatus in the first embodiment, and specifically, the temperature sensing method in this embodiment includes the following steps:
101: the sensing film 70 is vertically placed in the positioning portion 42 of the constant temperature and humidity chamber 10.
In this step, the sensing film 70 is vertically placed on the positioning portion 42 of the constant temperature and humidity chamber 10, so that the sensing film 70 is entirely in a relatively stable environment, and the temperature sensing detection of the sensing film 70 caused by the change of the environment is prevented from being different.
In this step, the temperature of the constant temperature and humidity chamber 10 is 20 ℃ to 28 ℃, for example, 20 ℃, 22 ℃, 24 ℃, 26 ℃ and 28 ℃, and the humidity is 45% to 55%, for example, 48%, 50%, 52%, 54% and 55%. It is understood that the humidity in this embodiment is a relative humidity, i.e., a percentage of the ratio of the actual water vapor pressure in the air of the constant temperature and humidity chamber 10 to the saturated water vapor pressure at the current air temperature. By enabling the sensing film 70 to be under the conditions that the temperature is 20-28 ℃ and the humidity is 45-55%, the environment of the sensing film 70 under the use condition can be simulated as much as possible, the same reference environment can be ensured when the sensing film 70 performs temperature detection every time, and the accuracy and the detection consistency of the temperature detection of the sensing film 70 are improved.
102: the sensing film 70 is heated by the heating device 20, the temperature of the sensing film 70 is detected by the temperature detecting unit 30, and the resistance of the sensing film 70 at the corresponding temperature is detected by the resistance detecting element 50.
In this step, when heating device 20 worked, induction film 70 was close to heating device 20's bottom and at first is heated by heating device 20, then upwards transmits the heat to induction film 70's top, and the inhomogeneous condition of being heated when effectively simulating induction film 70 in-service use can detect out the higher induction film 70 of sensitivity, promotes induction film 70's market competition.
In a specific embodiment of the present invention, the induction film 70 is naturally cooled after being heated to a predetermined temperature by the heating device 20. The predetermined temperature is 46 ℃ to 50 ℃, and may be 46 ℃, 47 ℃, 48 ℃, 49 ℃, 50 ℃ for example. Through heating device 20 with response film 70 rapid heating to behind the predetermined temperature natural cooling again, during the cooling, for example can cool off response film 70 to 42 ℃, in the cooling process, temperature detect component 30 can in time respond to and carry out temperature detection, avoids response film 70 temperature variation too fast and causes temperature detect component 30 reaction to follow up, guarantees temperature detect component 30's detection precision. The heating device 20 is used for heating the sensing film 70 to 46-50 ℃, and then the sensing film 70 is naturally cooled, so that the actual working condition of the sensing film 70 can be simulated.
In another embodiment of the present invention, when the heating device 20 is used to sense the film 70, the temperature of the sensing film 70 can be uniformly increased within a predetermined interval. Specifically, the predetermined interval is 42 ℃ to 46 ℃. The manner of uniform temperature rise of the sensing film 70 is as follows: the temperature of the sensing film 70 is raised by 0.4 to 0.6 deg.c per minute, which may be, for example, 0.4, 0.5, and 0 deg.c. In the rising process, the temperature detection assembly 30 can timely sense and carry out temperature detection, the phenomenon that the temperature of the sensing film 70 is too fast to follow up due to the fact that the temperature detection assembly 30 cannot react is avoided, and the detection precision of the temperature detection assembly 30 is guaranteed. When the heating device 20 is used for sensing the thin film 70, the temperature of the sensing thin film 70 can be uniformly increased within 42 ℃ to 46 ℃, so that the actual working condition of the sensing thin film 70 can be simulated, and the temperature sensing detection precision of the sensing thin film 70 is improved.
103: the sensitivity of the sensing film 70 is determined according to the values detected by the temperature detection member 30 and the resistance detection element 50.
In this step, the sensitivity of the sensing film 70 is detected by the controller 60 according to signals transmitted from the temperature detection unit and the resistance detection element 50.
Note that, the controller 60 in the present embodiment stores a database formed by simulating and analyzing the resistance change of the sensing film 70 having higher sensitivity at different temperature differences by the test of the sensing film temperature sensing apparatus in the first embodiment. The temperature detection assembly 30 and the resistance detection element 50 can transmit the detection result thereof to the controller 60, and the controller 60 can compare the signals transmitted by the temperature detection assembly 30 and the resistance detection element 50 with a database preset in the controller 60, thereby rapidly detecting and obtaining the sensing film 70 with high sensitivity.
Similarly, when the sensing method in this embodiment is used to detect the sensing thin film, the sensing thin film is vertically placed at the positioning portion, then the heating device is used to heat the sensing thin film, and the temperature detection assembly and the resistance detection element are used to detect the resistance change of the sensing thin film at different temperatures. In this in-process, the whole relatively stable environment that is in of response film, and the bottom that is close to heating device of response film at first is heated by heating device, then up transmits the heat to the top of response film again, the inhomogeneous condition of being heated when can effectively simulating response film in-service use can detect out the higher response film of sensitivity, promotes the market competition of response film.
The sensing film temperature-sensing detection device and the temperature-sensing detection method using the same disclosed by the embodiments of the invention are described in detail, specific examples are applied in the text to explain the principle and the implementation mode of the invention, and the description of the embodiments is only used for helping understanding the sensing film temperature-sensing detection device, the temperature-sensing detection method using the same and the core idea of the sensing film temperature-sensing detection device; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. An inductive film temperature sensing device, comprising:
a constant temperature and humidity chamber;
the heating device is arranged inside the constant temperature and humidity box and is used for heating the induction film;
the heat insulation assembly is arranged on the heating device and is surrounded to form a positioning part, and the positioning part is matched with the vertically placed induction film;
the temperature detection assembly is arranged in the constant temperature and humidity box and is used for detecting the temperature of the induction film; and
and the resistance detection element is arranged in the constant temperature and humidity box and is used for detecting the resistance of the induction film.
2. The inductive membrane temperature sensing device of claim 1, wherein said insulating assembly comprises at least one piece of insulating foam, wherein,
when the heat insulation foam is one block, the positioning part is arranged on the heat insulation foam;
when the heat insulation foam is two or more than two, the positioning part is formed by surrounding the two or more than two heat insulation foams.
3. The apparatus according to claim 1, wherein the temperature sensing assembly comprises a first sensing member and a second sensing member, the first sensing member being located at a top end of the thermal insulation assembly, the second sensing member being located at a bottom end of the thermal insulation assembly.
4. The apparatus according to any one of claims 1 to 3, further comprising a controller mounted on the thermostat and humidity chamber and communicatively connected to the heating device, the temperature detection assembly and the resistance detection element; wherein the content of the first and second substances,
the controller is used for controlling the heating device to enable the induction film to be naturally cooled after being heated to a preset temperature or enable the temperature of the induction film to rise at a constant speed in a preset interval;
the controller detects the sensitivity of the induction film according to signals transmitted by the temperature detection assembly and the resistance detection element.
5. A temperature sensing method using an induction thin-film temperature sensing device according to any one of claims 1 to 4, comprising:
101: vertically placing the induction film on the positioning part in the constant temperature and humidity box;
102: heating the induction film by using the heating device, detecting the temperature of the induction film by using the temperature detection assembly, and detecting the resistance of the induction film at the corresponding temperature by using the resistance detection element;
103: and judging the sensitivity of the induction film according to the values detected by the temperature detection assembly and the resistance detection element.
6. The temperature sensing method of claim 5, wherein the 102 step comprises:
heating the induction film to 46-50 ℃ by using the heating device and then naturally cooling;
in the cooling process, the temperature detection assembly is used for detecting the temperature of the induction film, and meanwhile, the resistance detection element is used for detecting the resistance of the induction film at the corresponding temperature.
7. The temperature sensing method of claim 5, wherein the 102 step comprises:
heating the induction film by using the heating device so as to enable the temperature of the induction film to rise at a constant speed in a preset interval;
in the rising process, the temperature detection assembly is used for detecting the temperature of the induction film, and meanwhile, the resistance detection element is used for detecting the resistance of the induction film at the corresponding temperature.
8. The method according to claim 7, wherein the predetermined interval is 42 ℃ to 46 ℃.
9. The temperature-sensing detection method according to claim 7, wherein the temperature of the sensing film is increased by 0.4 ℃ to 0.6 ℃ per minute in the process of uniformly increasing the temperature of the sensing film within a predetermined interval by using a heating device.
10. The temperature-sensitive detection method of any one of claims 5 to 9, wherein in step 103, the sensitivity of the sensing film is detected by a controller according to signals transmitted by the temperature detection assembly and the resistance detection element.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113650267A (en) * | 2021-08-16 | 2021-11-16 | 常州博疆新材料科技有限公司 | Hot blow molding method and device for preparing biodegradable film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113650267A (en) * | 2021-08-16 | 2021-11-16 | 常州博疆新材料科技有限公司 | Hot blow molding method and device for preparing biodegradable film |
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