A gauge calibration display device and apparatus

Abstract

The utility model discloses a kind of thickness gauge calibration display device and equipment, device includes: proportional operation amplifier module, the input end of proportional operation amplifier module is connected with the output end of the amplifier instrument of thickness gauge;Display module, display module is used to convert received input signal into digital signal and display digital signal;Power module, the output end of power module is connected with the power supply end of proportional operation amplifier module, and the power supply end of display module is connected;Selection switch, selection switch at least has first gear and second gear;When selection switch is in first gear, the output end of amplifier instrument is connected to the input end of display module through first selection end;When selection switch is in second gear, the output end of proportional operation amplifier module is connected to the input end of display module through second selection end. Visible, change the mode of traditional calibration operation relies on multi-person cooperation, reduce labor intensity and coordination cost and improve the accuracy of calibration result.

Description

Technical Field

[0001] This utility model relates to the field of instrument calibration technology, and in particular to a thickness gauge calibration display device and equipment. Background Technology

[0002] Thickness gauges require regular calibration and adjustment to maintain their measurement accuracy during long-term use. Traditional calibration methods are cumbersome, typically requiring multiple technicians working together, resulting in low efficiency and long processing times. Therefore, providing a simpler calibration device is a pressing technical problem that needs to be solved. Utility Model Content

[0003] This application provides a thickness gauge calibration display device and equipment, which solves the technical problems of low efficiency and long time consumption in the existing calibration methods, and achieves the technical effect of providing a simple calibration device.

[0004] In a first aspect, this application provides a thickness gauge calibration and display device, the device comprising:

[0005] The input terminal of the proportional operational amplifier module is connected to the output terminal of the amplifier instrument of the thickness gauge, and the output signal of the proportional operational amplifier module is greater than the input signal.

[0006] The display module is used to convert the received input signal into a digital signal and display the digital signal;

[0007] The power supply module's output terminal is connected to the power supply terminal of the proportional operational amplifier module and the power supply terminal of the display module.

[0008] The selector switch has at least a first position and a second position;

[0009] When the selector switch is in the first position, the output of the amplifier instrument is connected to the input of the display module through the first selector corresponding to the first position;

[0010] When the selector switch is in the second position, the output of the proportional operational amplifier module is connected to the input of the display module through the second selector corresponding to the second position.

[0011] In some embodiments of this application, based on the foregoing scheme, the scaling amplification module includes:

[0012] The non-inverting proportional amplifier has its non-inverting input connected to the output of the amplifier instrument, its negative input grounded through a first proportional amplification resistor, and its output connected to the negative input through a second proportional amplification resistor to form a closed loop.

[0013] When the selector switch is in the second position, the output of the in-phase amplifier is connected to the input of the display module through the second selector.

[0014] In some embodiments of this application, based on the foregoing scheme, the scaling amplification module further includes:

[0015] An adjustable potentiometer is used to connect the non-inverting input of the non-inverting proportional amplifier to the output of the amplifier instrument.

[0016] In some embodiments of this application, based on the foregoing scheme, the scaling amplification module further includes:

[0017] The output terminal of the amplifier instrument is connected to the non-inverting input terminal in sequence through an adjustable potentiometer and a voltage divider resistor.

[0018] A protection resistor is used to connect the output of the non-inverting amplifier to the second selection terminal.

[0019] In some embodiments of this application, based on the foregoing scheme, the power module includes:

[0020] Built-in power supply;

[0021] The first boost module has its input terminal connected to the built-in power supply and its output terminal connected to the power supply terminal of the display module.

[0022] The second boost module has its input connected to the built-in power supply and its output connected to the power supply of the non-inverting amplifier; or, the input of the second boost module is connected to the output of the first boost module and its output is connected to the power supply of the non-inverting amplifier.

[0023] In some embodiments of this application, based on the aforementioned scheme, the power module further includes a fast-blow fuse and a circuit breaker, both of which are connected in series between the built-in power supply and the first boost component.

[0024] In some embodiments of this application, based on the foregoing scheme, the apparatus further includes:

[0025] A voltmeter is installed at the output of the amplifier instrument.

[0026] In some embodiments of this application, based on the foregoing scheme, the output terminal of the amplifier instrument includes a first output interface, a second output interface, and a third output interface;

[0027] The first and second output interfaces are connected to a voltmeter.

[0028] The third output interface is connected to the first selection terminal and to the input terminal of the proportional amplification module.

[0029] In some embodiments of this application, based on the foregoing scheme, the device further includes: a housing, the housing having magnetic properties.

[0030] Secondly, this application provides a thickness gauge calibration display device, including a thickness gauge calibration display device as provided in the first aspect.

[0031] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0032] This application provides a thickness gauge calibration display device, comprising: a proportional operational amplifier module, the input terminal of which is connected to the output terminal of the amplifier instrument of the thickness gauge, wherein the output signal of the proportional operational amplifier module is greater than the input signal; a display module, which converts the received input signal into a digital signal and displays the digital signal; a power supply module, the output terminal of which is connected to the power supply terminal of the proportional operational amplifier module and the power supply terminal of the display module; and a selection switch, which has at least a first position and a second position; when the selection switch is in the first position, the output terminal of the amplifier instrument is connected to the input terminal of the display module through a first selection terminal corresponding to the first position; when the selection switch is in the second position, the output terminal of the proportional operational amplifier module is connected to the input terminal of the display module through a second selection terminal corresponding to the second position.

[0033] As can be seen, this embodiment directly converts the analog voltage signal output by the thickness gauge into an intuitive digital reading of the thickness deviation through the display module, avoiding the tedious process of manually reading the analog dial and performing calculations. This eliminates calibration errors caused by subjective human judgment and calculation mistakes, improving the accuracy and consistency of calibration results. Simultaneously, the use of the proportional amplifier module and selection switch gives the device excellent versatility and adaptability, flexibly matching the different signal output characteristics of different thickness gauge models, saving the trouble of secondary development or adjustment for different equipment. It changes the traditional calibration operation model that relies on multiple people working together, realizing single-person operation, freeing up human resources, reducing labor intensity and coordination costs, and greatly facilitating technicians to perform fast, safe, and efficient calibration operations under various harsh working conditions, comprehensively improving the equipment maintenance level and the stable operation capability of the production line. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of a thickness gauge calibration display device provided in an embodiment of this application;

[0036] In the above diagram: 1. Proportional operational amplifier module; 11. Non-inverting proportional amplifier; 12. First proportional amplifier resistor; 13. Second proportional amplifier resistor; 14. Adjustable potentiometer; 15. Voltage divider resistor; 16. Protection resistor; 2. Display module; 3. Power supply module; 31. Built-in power supply; 32. First boost converter; 33. Second boost converter; 34. Fast-blow fuse; 35. Circuit breaker; 4. Selector switch; 5. Amplifier instrument; 51. Voltmeter. Detailed Implementation

[0037] This application provides a thickness gauge calibration display device, which solves the technical problems of low efficiency and long time consumption in the existing calibration methods.

[0038] The technical solution of this application embodiment is to solve the above-mentioned technical problems, and the general idea is as follows:

[0039] This application provides a thickness gauge calibration display device, comprising: a proportional operational amplifier module, the input terminal of which is connected to the output terminal of the amplifier instrument of the thickness gauge, wherein the output signal of the proportional operational amplifier module is greater than the input signal; a display module, which converts the received input signal into a digital signal and displays the digital signal; a power supply module, the output terminal of which is connected to the power supply terminal of the proportional operational amplifier module and the power supply terminal of the display module; and a selection switch, which has at least a first position and a second position; when the selection switch is in the first position, the output terminal of the amplifier instrument is connected to the input terminal of the display module through a first selection terminal corresponding to the first position; when the selection switch is in the second position, the output terminal of the proportional operational amplifier module is connected to the input terminal of the display module through a second selection terminal corresponding to the second position.

[0040] As can be seen, this embodiment directly converts the analog voltage signal output by the thickness gauge into an intuitive digital reading of the thickness deviation through the display module, avoiding the tedious process of manually reading the analog dial and performing calculations. This eliminates calibration errors caused by subjective human judgment and calculation mistakes, improving the accuracy and consistency of calibration results. Simultaneously, the use of the proportional amplifier module and selection switch gives the device excellent versatility and adaptability, flexibly matching the different signal output characteristics of different thickness gauge models, saving the trouble of secondary development or adjustment for different equipment. It changes the traditional calibration operation model that relies on multiple people working together, realizing single-person operation, freeing up human resources, reducing labor intensity and coordination costs, and greatly facilitating technicians to perform fast, safe, and efficient calibration operations under various harsh working conditions, comprehensively improving the equipment maintenance level and the stable operation capability of the production line.

[0041] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0042] First, it should be clarified that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0043] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of these terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described.

[0044] It should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] It should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] In the cold-rolled strip steel production process of the metallurgical industry, the thickness tolerance of the strip is one of the key indicators for measuring its quality system. To ensure that the product meets the standards, continuous and accurate monitoring of the strip thickness is required during operation. Contact thickness gauges, due to their ability to measure online in real time, have gradually replaced traditional manual measuring tools and become the core equipment for ensuring thickness control accuracy in modern rolling processes. However, these thickness gauges have a complex structure, and during long-term continuous operation, their sensor parts are prone to mechanical displacement or jamming, and the electronic amplifier parts are also at risk of zero-point drift and accuracy degradation. Therefore, regular calibration and adjustment are necessary to maintain their measurement accuracy.

[0047] Traditional calibration methods heavily rely on the operator's experience, typically requiring the collaboration of multiple technicians: one person operates and adjusts the thickness gauge itself, another observes the reading of the external analog voltmeter and performs manual conversions, and a third person verifies the amplifier's display instrument. This process is not only cumbersome and time-consuming, but also highly susceptible to human error in readings and delays in judgment, resulting in low calibration efficiency and insufficient reliability, which has become a technical bottleneck restricting the improvement of production and maintenance efficiency.

[0048] To address the aforementioned problems, embodiments of this application provide a thickness gauge calibration and display device. For example... Figure 1 The diagram shown is a structural schematic of a thickness gauge calibration display device provided in an embodiment of this application, including a proportional amplification module 1, a display module 2, a power supply module 3, and a selection switch 4.

[0049] The input terminal of the proportional operational amplifier module 1 is connected to the output terminal of the amplifier instrument 5 of the thickness gauge; the output terminal of the power supply module 3 is connected to the power supply terminal of the proportional operational amplifier module 1, and the output terminal of the power supply module 3 is connected to the power supply terminal of the display module 2. When the selector switch 4 is in the first position, the output terminal of the amplifier instrument 5 is connected to the input terminal of the display module 2 through the first selection terminal X1 corresponding to the first position; when the selector switch 4 is in the second position, the output terminal of the proportional operational amplifier module 1 is connected to the input terminal of the display module 2 through the second selection terminal X2 corresponding to the second position. The display module 2 is used to convert the received input signal into a digital signal and display the digital signal.

[0050] The output signal of the proportional operational amplifier module 1 is greater than the input signal. The proportional operational amplifier module 1 is used to receive the first voltage signal output by the amplifier instrument 5, and linearly amplify it through a preset gain coefficient to output a second voltage signal; wherein the preset gain coefficient is to ensure that the second voltage signal and the thickness deviation value detected by the thickness gauge satisfy the proportional relationship of the substitution coefficient in the display module 2.

[0051] Specifically, the proportional operational amplifier module 1 includes: a non-inverting proportional amplifier 11, a first proportional amplifier resistor 12, and a second proportional amplifier resistor 13.

[0052] The non-inverting input terminal of the non-inverting amplifier 11 is connected to the output terminal of the amplifier instrument 5. The negative input terminal of the non-inverting amplifier 11 is grounded through the first proportional amplification resistor 12. The output terminal of the non-inverting amplifier 11 is connected to the negative input terminal through the second proportional amplification resistor 13 to form a closed loop. When the selector switch 4 is in the second position, the output terminal of the non-inverting amplifier 11 is connected to the input terminal of the display module 2 through the second selection terminal X2.

[0053] The advantages of the non-inverting proportional amplifier 11 are high input impedance (it will not cause a load effect on the amplifier instrument 5 of the front-end thickness gauge), low output impedance (strong driving capability), and no change in phase when amplifying the signal. The first proportional amplifier resistor 12 serves as the resistance to ground at the negative input terminal, and the second proportional amplifier resistor 13 serves as the feedback resistor, forming a voltage series negative feedback. This makes the gain of the entire amplifier circuit very stable, determined only by the ratio of the two proportional amplifier resistors, and is not affected by the operational amplifier's own parameters.

[0054] This closed-loop gain can be expressed by the formula: U O =U i *(1+R2 / R1); where U i U is the input voltage of the non-inverting amplifier 11. O R1 is the output voltage of the non-inverting amplifier 11, R2 is the resistance value of the first proportional amplifier resistor 12, and R2 is the resistance value of the second proportional amplifier resistor 13.

[0055] Furthermore, the proportional operational amplifier module 1 also includes an adjustable potentiometer 14. The non-inverting input terminal of the non-inverting proportional amplifier 11 is connected to the output terminal of the amplifier instrument 5 via the adjustable potentiometer 14. The adjustable potentiometer 14 is connected in series in the signal input path of the non-inverting input terminal of the non-inverting proportional amplifier 11, acting as a variable voltage divider. By adjusting the resistance of the potentiometer, the actual voltage input to the non-inverting input terminal can be changed, allowing for continuous and precise adjustment of the amplification factor of the entire proportional operational amplifier module 1.

[0056] Furthermore, the proportional operational amplifier module 1 also includes a voltage divider resistor 15 and a protection resistor 16. The output terminal of the amplifier instrument 5 is connected to the non-inverting input terminal in sequence through the adjustable potentiometer 14 and the voltage divider resistor 15; the output terminal of the non-inverting proportional amplifier 11 is connected to the second selection terminal X2 through the protection resistor 16.

[0057] The voltage divider resistor 15 and the adjustable potentiometer 14 together form a more precise and controllable voltage divider circuit, allowing for further fine adjustment of the input signal magnitude. Simultaneously, the voltage divider resistor 15, acting as a fixed resistor, can limit the current flowing into the non-inverting input terminal when the adjustable potentiometer 14 is accidentally adjusted to zero resistance, protecting the input stage of the non-inverting amplifier 11 from large current surges.

[0058] The protection resistor 16 is an output current limiting resistor. When the output terminal of the non-inverting amplifier 11 is short-circuited due to operational errors or circuit faults, the protection resistor 16 can limit the output current of the non-inverting amplifier 11 and reduce the possibility of the non-inverting amplifier 11 burning out due to overload.

[0059] The power module 3 includes: a built-in power supply 31, a first boost component 32, and a second boost component 33.

[0060] The input terminal of the first boost module 32 is connected to the built-in power supply 31, and the output terminal of the first boost module 32 is connected to the power supply terminal of the display module 2. The first boost module 32 is used to boost the voltage of the built-in power supply 31 to a first preset voltage to power the display module 2. The first preset voltage matches the operating voltage of the display module 2.

[0061] The input terminal of the second boost component 33 is connected to the built-in power supply 31, and the output terminal of the second boost component 33 is connected to the power supply terminal of the non-inverting amplifier 11; alternatively, the input terminal of the second boost component 33 is connected to the output terminal of the first boost component 32, and the output terminal of the second boost component 33 is connected to the power supply terminal of the non-inverting amplifier 11. In other words, the input terminal of the second boost component 33 can be selectively connected to either the built-in power supply 31 or the output terminal of the first boost component 32. The second boost component 33 is used to boost the received voltage to a second preset voltage to power the non-inverting amplifier 11, and the second preset voltage matches the operating voltage of the non-inverting amplifier 11.

[0062] exist Figure 1 The following example illustrates the process of connecting the input of the second boost module 33 to the output of the first boost module 32. Both the first boost module 32 and the second boost module 33 are DC-DC boost converters. For example, if the built-in power supply 31 is a 3.7V battery, the first boost module 32 boosts it to 12V to power the display module 2, and the second boost module 33 further boosts the 12V to 15V to power the in-phase amplifier 11.

[0063] Furthermore, the power module 3 also includes a fast-blow fuse 34 and a circuit breaker 35, both of which are connected in series between the built-in power supply 31 and the first boost assembly 32. Figure 1 As shown, the voltage output from the built-in power supply 31 is sequentially input to the first boost module 32 through a fast-blow fuse 34 and a circuit breaker 35. The fast-blow fuse 34 prevents damage to the battery or even danger caused by a large current generated due to a severe internal short circuit (such as a DC-DC module breakdown). The circuit breaker 35 allows users to completely disconnect the power supply to the internal circuit, achieving safe storage and energy saving. In the event of a severe short circuit, the fast-blow fuse 34 will blow first to cut off the large current; in the event of a general overload, the circuit breaker 35 will trip to alert the user to the abnormality and can be reset after the fault is cleared without replacing components.

[0064] Display module 2 is essentially a highly integrated digital panel meter, which integrates an analog-to-digital converter and a microprocessor. Through a preset conversion program, it directly converts the measured voltage value into a thickness deviation value according to a preset coefficient (such as 100mV / μm).

[0065] Furthermore, the device also includes a voltmeter 51, which is located at the output of the amplifier instrument 5. The voltmeter 51 is used to monitor and calibrate the mechanical symmetry of the two sensors of the thickness gauge, such as an analog pointer meter or a small-range digital meter, typically with a measurement range of ±3V.

[0066] The amplifier instrument 5 has three output terminals: a first output interface 01, a second output interface 02, and a third output interface 03. The first output interface 01 and the second output interface 02 are connected to the voltmeter 51; the third output interface 03 is connected to the first selection terminal X1 and to the input terminal of the proportional operational amplifier module 1.

[0067] The first output interface O1 and the second output interface O2 output a symmetry monitoring signal within a range of ±3V. Maintenance personnel can determine the symmetry of the mechanical structure and the accuracy of the zero point by observing whether the pointer of the voltmeter 51 deflects or returns to zero during sensor movement. The third output interface O3 outputs a thickness deviation main signal within a range of ±10V, which is simultaneously connected to the first selection terminal X1 of the selector switch 4 and the input terminal of the proportional operational amplifier module 1.

[0068] Furthermore, the device includes a magnetic housing, allowing the entire unit to be securely attached to the thickness gauge body, electrical cabinet door, motor housing, or other steel structures. Field maintenance personnel typically require both hands for operations (such as adjusting sensors or changing samples). The magnetic feature allows them to attach the device to the most convenient viewing location, eliminating the need for additional handheld operation or finding a placement platform.

[0069] The following provides a specific embodiment to describe in detail a thickness gauge calibration display device provided in this application.

[0070] The thickness gauge calibration and display device is connected to the X4 interface (as the output terminal) of the thickness gauge's amplifier instrument via a 5-meter cable. Pins 1 and 2 of the X4 interface are connected to a ±3V analog voltmeter as the first and second output interfaces, respectively. Pin 3 of the X4 interface (outputting a ±10V thickness difference signal) is connected to a double-throw selector switch as the third output interface. Additionally, pin 3 of the X4 interface is also connected to an adjustable potentiometer.

[0071] When the selector switch is set to the first position, the ±10V thickness difference signal from pin 3 of the X4 interface bypasses the amplifier circuit and is directly sent to the input of the digital panel meter (as a display module, such as an 1888 seven-segment display). This is suitable for thickness gauges with a thickness difference signal ratio of 100mV / μm (i.e., 1V voltage represents 10μm thickness deviation).

[0072] When the selector switch is set to the second position, the ±10V thickness difference signal first enters the proportional operational amplifier module. This module is based on a non-inverting proportional amplifier, whose gain is determined by the first proportional amplification resistor (20kΩ) and the second proportional amplification resistor (80kΩ). The input signal magnitude is changed by adjusting an adjustable potentiometer (currently 20kΩ). After the adjustable potentiometer, a voltage divider resistor (20kΩ) is connected for protection, thereby accurately amplifying and calibrating the 40mV / μm signal ratio (i.e., 1V voltage represents 25μm thickness deviation) to a ratio of 100mV / μm that matches the digital panel meter. The amplified signal is then output through a protection resistor (2kΩ) and sent to the digital panel meter via the selector switch.

[0073] The thickness gauge calibration and display device is powered by a 3.7V lithium battery. This voltage is first protected by a fast-blow fuse and a power circuit breaker. Then, the power supply first enters a first boost converter to boost the 3.7V voltage to 12V, specifically powering the digital panel meter. A second boost converter then boosts the 12V voltage to 15V, providing power to the proportional operational amplifier. The power module can still operate normally when the battery voltage drops to 2.6V, providing continuous power for 4-5 hours.

[0074] All the aforementioned electronic components are integrated into a portable housing. The front of the housing houses a digital panel meter, an analog voltmeter, and a selector switch. A strong magnet is embedded in the back of the housing, allowing the entire device to be securely attached to the thickness gauge body or a nearby steel structure for easy operator observation. A power circuit breaker is mounted on the side of the housing as the main switch.

[0075] The operating procedure of this device is designed for a single operator to independently complete the calibration and adjustment of the thickness gauge. First, fix the device in a convenient location for observation using magnetic attachment or placement. Connect the device's input terminal to the X4 interface of the thickness gauge's amplifier using a cable. Then, operate the thickness gauge, causing its two sensors to open and close synchronously in an unloaded state (without measuring an object). Observe the pointer of the ±3V analog voltmeter on the device. If the pointer is stable near zero without significant fluctuation, the thickness gauge has good symmetry. If the pointer deflects or deviates from zero, the mechanical structure of the thickness gauge needs to be adjusted until the symmetry meets the requirements.

[0076] Based on the process requirements of the sample being tested, confirm whether its thickness difference signal ratio is 100mV / μm or 40mV / μm, and set the selector switch on the device to the corresponding position. If it is 40mV / μm, after connecting the standard sample, fine-tune the adjustable potentiometer on the device until the digital display value matches the standard value of the sample, thus achieving precise matching of the magnification. Insert the standard sample (with known precise thickness) between the two sensors of the thickness gauge and directly read the display value on the digital panel of the device. This value directly displays the thickness deviation in micrometers (μm), with a minimum resolution of 1μm. After calibration, disconnect the cable and turn off the device's power circuit breaker. The entire process can be completed by one person in about one hour, significantly improving efficiency compared to the traditional method (3 people for 4 hours).

[0077] In summary, this application provides a thickness gauge calibration display device, comprising: a proportional operational amplifier module, the input terminal of which is connected to the output terminal of the amplifier instrument of the thickness gauge, wherein the output signal of the proportional operational amplifier module is greater than the input signal; a display module, which converts the received input signal into a digital signal and displays the digital signal; a power supply module, the output terminal of which is connected to the power supply terminal of the proportional operational amplifier module and the power supply terminal of the display module; and a selection switch, which has at least a first position and a second position; when the selection switch is in the first position, the output terminal of the amplifier instrument is connected to the input terminal of the display module through a first selection terminal corresponding to the first position; when the selection switch is in the second position, the output terminal of the proportional operational amplifier module is connected to the input terminal of the display module through a second selection terminal corresponding to the second position.

[0078] As can be seen, this embodiment directly converts the analog voltage signal output by the thickness gauge into an intuitive digital reading of the thickness deviation through the display module, avoiding the tedious process of manually reading the analog dial and performing calculations. This eliminates calibration errors caused by subjective human judgment and calculation mistakes, improving the accuracy and consistency of calibration results. Simultaneously, the use of the proportional amplifier module and selection switch gives the device excellent versatility and adaptability, flexibly matching the different signal output characteristics of different thickness gauge models, saving the trouble of secondary development or adjustment for different equipment. It changes the traditional calibration operation model that relies on multiple people working together, realizing single-person operation, freeing up human resources, reducing labor intensity and coordination costs, and greatly facilitating technicians to perform fast, safe, and efficient calibration operations under various harsh working conditions, comprehensively improving the equipment maintenance level and the stable operation capability of the production line.

[0079] Based on the same inventive concept, this application also provides a thickness gauge calibration display device, including a thickness gauge calibration display device as described above.

[0080] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0081] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A thickness gauge calibration and display device, characterized in that, The device includes: A proportional operational amplifier module, wherein the input terminal of the proportional operational amplifier module is connected to the output terminal of the amplifier instrument of the thickness gauge, and the output signal of the proportional operational amplifier module is greater than the input signal; The display module is used to convert the received input signal into a digital signal and display the digital signal; A power supply module, the output terminal of which is connected to the power supply terminal of the proportional operational amplifier module and the power supply terminal of the display module; The selector switch has at least a first position and a second position; When the selection switch is in the first position, the output terminal of the amplifier instrument is connected to the input terminal of the display module through the first selection terminal corresponding to the first position; When the selection switch is in the second position, the output terminal of the proportional amplification module is connected to the input terminal of the display module through the second selection terminal corresponding to the second position.

2. The thickness gauge calibration and display device as described in claim 1, characterized in that, The scaling amplification module includes: A non-inverting proportional amplifier, wherein the non-inverting input terminal of the non-inverting proportional amplifier is connected to the output terminal of the amplifier instrument, the negative input terminal of the non-inverting proportional amplifier is grounded through a first proportional amplification resistor, and the output terminal of the non-inverting proportional amplifier is connected to the negative input terminal through a second proportional amplification resistor to form a closed loop; When the selection switch is in the second position, the output of the in-phase amplifier is connected to the input of the display module through the second selection terminal.

3. The thickness gauge calibration and display device as described in claim 2, characterized in that, The scaling amplification module also includes: An adjustable potentiometer is provided, through which the non-inverting input terminal of the non-inverting proportional amplifier is connected to the output terminal of the amplifier instrument.

4. The thickness gauge calibration and display device as described in claim 3, characterized in that, The scaling amplification module also includes: The output terminal of the amplifier instrument is connected to the non-inverting input terminal in sequence through the adjustable potentiometer and the voltage divider resistor; A protection resistor is provided, through which the output terminal of the non-inverting amplifier is connected to the second selection terminal.

5. The thickness gauge calibration and display device as described in claim 2, characterized in that, The power module includes: Built-in power supply; A first boost converter, the input terminal of which is connected to the built-in power supply, and the output terminal of which is connected to the power supply terminal of the display module; A second boost converter has its input terminal connected to the built-in power supply and its output terminal connected to the power supply terminal of the non-inverting amplifier; or, the input terminal of the second boost converter is connected to the output terminal of the first boost converter and its output terminal is connected to the power supply terminal of the non-inverting amplifier.

6. The thickness gauge calibration and display device as described in claim 5, characterized in that, The power module also includes a fast-blow fuse and a circuit breaker, both of which are connected in series between the built-in power supply and the first boost component.

7. The thickness gauge calibration and display device as described in claim 1, characterized in that, The device further includes: A voltmeter is installed at the output terminal of the amplifier instrument.

8. The thickness gauge calibration and display device as described in claim 7, characterized in that, The output terminals of the amplifier instrument include a first output interface, a second output interface, and a third output interface; The first output interface and the second output interface are connected to the voltmeter; The third output interface is connected to the first selection terminal and to the input terminal of the proportional amplification module.

9. The thickness gauge calibration and display device as described in claim 1, characterized in that, The device further includes a housing that is magnetically attractive.

10. A thickness gauge calibration and display device, characterized in that, The thickness gauge calibration display device includes any one of claims 1-9.

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