Digital calibration device for torsional stress measuring tool

Abstract

The invention mainly relates to the technical field of calibration of torsional stress measuring tools after aircraft assembly, and particularly provides a digital calibration device for a torsional stress measuring tool. The device can realize digital calibration of the torsional stress after the airplane is assembled, can accurately measure the torsional stress of a tool, and reduces the uncertainty of manual calibration, so that the efficiency and accuracy of the calibration process are remarkably improved, and the reliability of the measurement of the torsional stress of the airplane is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application mainly relates to the technical field of calibration of post-assembly torsional stress measurement tools for aircraft, and specifically provides a digital calibration device for torsional stress measurement tools. BACKGROUND

[0002] In traditional aircraft assembly processes, the calibration of torsional stress measurement tools mainly relies on manual operation and experience-based judgment, which is not only inefficient but also susceptible to human factors, leading to inaccurate measurement data. With the rapid development of the aviation industry, the requirements for aircraft assembly quality are increasingly high, and the traditional calibration method has been unable to meet the high-precision and high-efficiency calibration needs. Therefore, the present application proposes a digital calibration device for torsional stress measurement tools, aiming to achieve accurate calibration of torsional stress measurement tools through digital technology and improve the automation and accuracy of the calibration process. This device integrates advanced sensors and data processing algorithms to monitor and adjust the state of the torsional stress measurement tool in real time, ensuring that each measurement meets the predetermined precision standards. In addition, it can record all data during the calibration process, providing detailed evidence for subsequent quality analysis and improvement.

[0003] Furthermore, the traditional calibration method also has the problems of complex operation and long time consumption, which poses a challenge to the efficient operation of the aircraft assembly production line. At the same time, errors that may occur during manual calibration can also pose a potential threat to the safety performance of the aircraft.

[0004] Moreover, the traditional calibration process of torsional stress measurement tools usually needs to be carried out in a specific laboratory environment, which not only limits the flexibility of calibration but also increases the cost of calibration. Due to the complex environment of aircraft assembly sites, the traditional calibration method is often difficult to perform real-time calibration on site, thereby affecting the progress and quality of aircraft assembly. SUMMARY

[0005] Therefore, it is particularly important to develop a device that can overcome the above-mentioned defects and achieve efficient and accurate calibration. The digital calibration device of the present application is designed based on such background and demand, and aims to provide a new calibration scheme to meet the urgent needs of modern aviation industry for high-precision and high-efficiency calibration technology. The device greatly simplifies the calibration steps and shortens the calibration time through intelligent user interface and automated operation process, while the reliability of the calibration results is ensured through accurate algorithms, thereby effectively reducing the risk of human operation errors and ensuring the safety and reliability of aircraft assembly. The digital calibration device of the present application, by adopting advanced digital technology and portable design, makes the calibration process no longer limited to a specific environment, and can be calibrated in real time at the aircraft assembly site, greatly improving the flexibility and efficiency of calibration. Therefore, the digital calibration device of the present application not only has the advantages of high precision and high efficiency, but also has good portability and on-site applicability, providing strong technical support for the aircraft assembly process of modern aviation industry. The design of the device takes into account the convenience of on-site operation, and its light structure and easy-to-operate characteristics make it easy for technicians to carry to any place where calibration is needed, without relying on complex laboratory equipment, thereby realizing the immediacy and efficiency of calibration work.

[0006] In view of the problems existing in the current technical field, the present application particularly provides an innovative digital calibration device, which is specially used for the calibration of torsional stress measurement tools. By using the digital calibration device provided by the present application, a fast and efficient calibration process of the torsional stress measurement tool can be realized. Such calibration method can effectively avoid the wear problem of the torsional stress measurement tool due to long-term use, thereby preventing the torsional stress measurement tool from failing due to wear. If the torsional stress measurement tool fails, it may cause the measurement result of the torsional stress to deviate, and then cause the occurrence of missed detection, which not only reduces the detection accuracy of the aviation product, but also may have a serious negative impact on the delivery quality and delivery schedule of the aviation product. Therefore, the digital calibration device of the present application not only ensures the accuracy of the torsional stress measurement, but also guarantees the delivery quality and schedule of the aviation product, which has important practical value and market application prospect.

[0007] To achieve the above-mentioned purposes, the present application adopts the following technical solutions:

[0008] According to one aspect of the present application, a digital calibration device for torsional stress measurement tools is provided, which is composed of a mechanical connection structure, a calibration execution structure and a digital control structure;

[0009] The mechanical connection structure is composed of an outer member 1, a protective sleeve 4, a display screen 10, an HDMI port 11 and an HTTP port 12;

[0010] The calibration execution structure is composed of a threaded measuring body 2, a hexagonal measuring body 3, a torsional stress sensor 13, a data acquisition module 14 and a signal conditioning module 15.

[0011] The digital control structure is composed of a switch button 5, a calibration button 6, a reset button 7, an optical alarm 8, an acoustic alarm 9, a single-chip microcomputer 16, a controller 17, an automatic recording and analysis module 18 and a self-diagnosis module 19.

[0012] The outer shape member 1 is a bearing and protection member, and the remaining members are mounted on the outer shape member 1 through bolt connection, which is convenient for disassembly and maintenance, and the outer shape member 1 can also protect the internal members, thereby playing a bearing and protection role.

[0013] The protective sleeve 4 is a supporting member, and the threaded measuring body 2 and the hexagonal measuring body 3 are connected to the outer shape member 1 through the protective sleeve 4, and the threaded measuring body 2 and the hexagonal measuring body 3 can be positioned and fixed through the protective sleeve 4, thereby preventing excessive stress from causing fluctuations during calibration, and playing a positioning and supporting role for the digital calibration device.

[0014] The display screen 10 is a display member, and the calibration torsional stress value and the calibration conclusion can be displayed on the display screen 10, and the working status of the optical alarm 8 and the acoustic alarm 9 is also displayed on the display screen 10, thereby playing a display role.

[0015] The HDMI port 11 and the HTTP port 12 are expansion members, and the functions can be expanded through the HDMI port 11 and the HTTP port 12, the HDMI port 11 can be connected to a digital display large screen or an upper computer, the display information of the display screen 10 is expanded to the digital display large screen or the upper computer, thereby realizing the expansion of digital display, the HTTP port 12 can be connected to the upper computer, and software upgrading and program embedding are realized through the upper computer, thereby avoiding calibration failure caused by low software version, and playing a function expansion role.

[0016] The threaded measuring body 2 and the hexagonal measuring body 3 are execution members for calibration work, and the calibration work of the torsional stress measuring tool can be realized through the threaded measuring body 2 or the hexagonal measuring body 3, the threaded measuring body 2 is used for the calibration of screw and other torsional stress measuring tools, the hexagonal measuring body 3 is used for the calibration of bolt and other torsional stress measuring tools, and the threaded measuring body 2 and the hexagonal measuring body 3 are connected to the torsional stress sensor 13, thereby indirectly transmitting the torsional stress of the torsional stress measuring tool to the torsional stress sensor 13, and playing a torsional stress transmission role.

[0017] The torsion stress sensor 13, the data acquisition module 14 and the signal conditioning module 15 are sensing, collecting and processing components, realize the acquisition and use of required data, the torsion stress sensor 13 senses the data transmitted by the thread measuring body 2 and the hexagon measuring body 3, obtains the torsion stress simulation signal of the torsion stress measuring tool, the simulation signal cannot be used directly, needs to use the data acquisition module 14 to collect the signal, uses the data acquisition module 14 to collect the simulation signal sensed by the torsion stress sensor 13, and transmits the collected simulation signal to the signal conditioning module 15 for processing, plays a role of data collection, the signal conditioning module 15 processes the simulation signal collected by the data acquisition module 14, converts the simulation signal into a digital signal that can be received by the control system, for example, converts the stress signal into a voltage signal that can be received by the single-chip microcomputer 16, plays a role of analog-digital conversion of the signal.

[0018] The switch button 5, the calibration button 6 and the reset button 7 are control input components, play a role of controlling the switch, execution and reset of the digital calibration device, use the switch button 5 to realize the power-on and power-off, when the power-on, the power-on self-test is performed, the display screen 10 displays normally, when the power-off, the power-off is performed, to prevent the risk hidden danger, use the calibration button 6 to realize the start of the calibration work, when the switch button 5 is turned on and powered on, the calibration work is in a static state, when the calibration button 6 is pressed, the calibration work can be started, use the reset button 7 to realize the reset of the calibration work, the display screen 10 is cleared, the calibration data is reset to zero, and the optical alarm 8 and the acoustic alarm 9 are restored to the problem-free state.

[0019] The optical alarm 8 and the acoustic alarm 9 are warning alarm components, can complete the prompt of the calibration problem, through the optical alarm 8, light is emitted to remind when the calibration problem occurs, to avoid missing problems, through the acoustic alarm 9, a reminder is emitted when the calibration problem occurs, to avoid missing quality problems due to human reasons, play a role of reminding the calibration work.

[0020] The single-chip microcomputer 16, the controller 17, the automatic recording and analysis module 18 and the self-diagnosis module 19 are signal processing and control components, the single-chip microcomputer 16 is used to realize the signal data processing, processes the digital signal converted by the signal conditioning module 15, displays the torsion stress signal and the pass or fail on the display screen 10, and sends a control instruction to the controller 17 through the single-chip microcomputer 16 for further processing, plays a role of receiving, processing and judging the data.

[0021] The control instructions issued by the single-chip microcomputer 16 can be converted and transmitted by the controller 17. When the calibration result is unqualified, the controller 17 controls the optical alarm 8 and the acoustic alarm 9 to issue corresponding warnings. The warnings can be eliminated only by pressing the reset button 7. The automatic recording and analysis module 18 can record the calibration result. After one calibration is completed, the automatic recording and analysis module 18 can automatically record the calibration result, analyze the calibration result, and process the calibration result together with the single-chip microcomputer 16 to form control instructions.

[0022] The self-diagnosis module 19 is used to realize post-operation diagnosis processing, so as to exclude calibration omissions caused by faults of the digital calibration device itself, and to affect the reliability and accuracy of the calibration work.

[0023] Specifically, the following process method is used to realize the control operation of the single-chip microcomputer according to the control signal. First, the calibration end of the torsional stress measurement tool to be calibrated is selected by using the selection button according to the requirements. As shown in the figure, the calibration end is divided into a threaded measuring body and a hexagonal measuring body. The single-chip microcomputer guides the controller to issue corresponding control instructions. Different control instructions control different actions. The switch instruction controls the opening of the calibration device, and the calibration instruction controls the working state of the calibration device. The corresponding analog signal is generated by the torsional stress strain sensor, collected by the data acquisition module, transmitted to the strain signal conditioning module, and converted into a digital signal by the strain signal conditioning module. The digital signal is transmitted to the single-chip microcomputer for further judgment. According to the digital signal, a conclusion is made as to whether it is qualified or not, and a display instruction is issued to the controller. The specific calibration value and conclusion are displayed on the display screen. When unqualified occurs, the controller controls the optical alarm and the acoustic alarm to convey the warning signal. After one calibration is completed, the reset signal can be used to control the single-chip microcomputer to reset and return to zero for the next calibration work. The self-diagnosis module and the automatic recording and analysis module assist in the calibration process each time to realize the digital automatic diagnosis and calibration of the torsional stress measurement tool.

[0024] The advantages of the present application are as follows:

[0025] The digital calibration device significantly improves the calibration accuracy and efficiency of the torsional stress measurement tool due to its unique design concept. In actual application, the device can automatically complete the calibration process, effectively reducing errors caused by improper human operation. At the same time, its real-time monitoring and feedback function ensures the accuracy and reliability of the calibration result. In addition, the device also has a self-diagnosis function, which can timely discover and handle potential problems, thereby ensuring its long-term stable operation. Figure 5The left view shown further demonstrates the structural details of the device, providing a more comprehensive reference for the technician. Overall, the implementation of this digital calibration device has achieved remarkable results, providing a new solution for the calibration of torsional stress measurement tools.

[0026] Specifically, after using this digital calibration device, the calibration error rate is reduced by about 30% compared to traditional methods, and the calibration time is shortened by nearly 50%. This not only greatly improves work efficiency, but also effectively reduces calibration costs. At the same time, due to the high level of automation and intelligence of the device, technicians only need to perform simple operations to complete the calibration work, greatly reducing the work burden. In addition, the data recording and analysis function of the device can also provide strong data support for subsequent scientific research and production, further improving the overall work quality and efficiency.

[0027] More importantly, the digital calibration device has a wide range of applications, not only suitable for various types and specifications of torsional stress measurement tools, but also can be extended to calibration work in other mechanical measurement fields. Its modular design makes the device easy to maintain and upgrade, able to adapt to the needs of future technological development. In the implementation process, users have actively fed back, giving high praise to the ease of use and high efficiency of the device. In summary, the successful implementation of the digital calibration device not only solves a series of technical problems in the calibration process of torsional stress measurement tools, but also injects new vitality into the development of related fields, with far-reaching social and economic benefits.

[0028] In particular, in high-precision scientific research and production environments, the application of the device significantly improves the reliability of measurement data and the accuracy of scientific research results. With the continuous progress of technology and the continuous expansion of application fields, the digital calibration device is expected to play a greater role in the future and make greater contributions to the development of mechanical measurement fields. At the same time, the successful development and implementation of the device also provide new ideas and directions for the calibration of other similar measurement tools, promoting the innovative development of the entire measurement and calibration industry. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 Flowchart for calibration method for torsional stress measurement tool;

[0030] Figure 2 Axonometric view of calibration device for torsional stress measurement tool;

[0031] Figure 3 Front view of calibration device for torsional stress measurement tool;

[0032] Figure 4 Top view of calibration device for torsional stress measurement tool;

[0033] Figure 5Left view of calibration device for torsion stress measuring tool.

[0034] Wherein, 1 profile member, 2 thread measuring body, 3 hexagonal measuring body, 4 protective sleeve, 5 switch button, 6 calibration button, 7 reset button, 8 optical alarm, 9 acoustic alarm, 10 display screen, 11 HDMI port, 12 HTTP port, 13 torsion stress sensor, 14 data acquisition module, 15 signal conditioning module, 16 single-chip microcomputer, 17 controller, 18 automatic recording and analysis module, 19 self-diagnosis module. DETAILED DESCRIPTION

[0035] The application will be described in detail below with reference to the embodiments, but the application is not limited to these embodiments.

[0036] Embodiment 1

[0037] A digital calibration device for torsion stress measuring tool, which is composed of mechanical connection structure, calibration execution structure and digital control structure;

[0038] The mechanical connection structure is composed of profile member 1, protective sleeve 4, display screen 10, HDMI port 11 and HTTP port 12;

[0039] The calibration execution structure is composed of thread measuring body 2, hexagonal measuring body 3, torsion stress sensor 13, data acquisition module 14 and signal conditioning module 15;

[0040] The digital control structure is composed of switch button 5, calibration button 6, reset button 7, optical alarm 8, acoustic alarm 9, single-chip microcomputer 16, controller 17, automatic recording and analysis module 18 and self-diagnosis module 19.

[0041] The profile member 1 is a bearing and protection member, and the remaining components are installed on the profile member 1 through bolt connection. The bolt installation is convenient for disassembly and maintenance, and the profile member 1 can also protect the internal components, playing a bearing and protection role.

[0042] The protective sleeve 4 is a support member, which realizes the connection of the thread measuring body 2 and the hexagonal measuring body 3 with the profile member 1, and can position and fix the thread measuring body 2 and the hexagonal measuring body 3, preventing excessive stress from causing fluctuations during calibration, and playing a positioning and supporting role for the digital calibration device.

[0043] The display screen 10 is a display member, which can display the calibration torsion stress value and the calibration conclusion, and the working status of the optical alarm 8 and the acoustic alarm 9 is also displayed on the display screen 10, playing a display role.

[0044] The HDMI port 11 and the HTTP port 12 are extension components, the functions can be extended by using the HDMI port 11 and the HTTP port 12, the HDMI port 11 can be connected with a digital display large screen or a host computer, the display information of the display screen 10 is extended to the digital display large screen or the host computer, the extension of the digital display is realized, the HTTP port 12 can be connected with the host computer, the software upgrade and the program embedding are realized through the host computer, the calibration failure caused by the low software version is avoided, and the function extension effect is achieved.

[0045] The threaded measuring body 2 and the hexagonal measuring body 3 are execution components of calibration work, the calibration work of the torsional stress measuring tool can be realized by using the threaded measuring body 2 or the hexagonal measuring body 3, the threaded measuring body 2 is used for the calibration of the torsional stress measuring tool such as a screw, the hexagonal measuring body 3 is used for the calibration of the torsional stress measuring tool such as a bolt, and the threaded measuring body 2 and the hexagonal measuring body 3 are connected with the torsional stress sensor 13, the torsional stress of the torsional stress measuring tool is indirectly transmitted to the torsional stress sensor 13, and the torsional stress transmission effect is achieved.

[0046] The torsional stress sensor 13, the data acquisition module 14 and the signal conditioning module 15 are sensing, collecting and processing components, the required data is acquired and used, the data transmitted by the threaded measuring body 2 and the hexagonal measuring body 3 is sensed by the torsional stress sensor 13, the torsional stress simulation signal of the torsional stress measuring tool is acquired, the simulation signal cannot be used directly, the signal acquisition needs to be realized by using the data acquisition module 14, the sensing simulation signal of the torsional stress sensor 13 is collected by using the data acquisition module 14, and the collected simulation signal is transmitted to the signal conditioning module 15 for processing, the data acquisition effect is achieved, the simulation signal collected by the data acquisition module 14 is processed by the signal conditioning module 15, the simulation signal is converted into a digital signal that can be received by a control system, for example, the stress signal is converted into a voltage signal that can be received by the single-chip microcomputer 16, and the analog-digital conversion effect of the signal is achieved.

[0047] The switch button 5, the calibration button 6 and the reset button 7 are control input components, the switch, execution and reset effects of the digital calibration device are achieved, the start and stop can be realized by using the switch button 5, the power-on self-test is realized when starting, the display screen 10 displays normally, the power is cut off when stopping, and the risk hidden danger is prevented, the calibration work can be started by using the calibration button 6, the calibration work is in a static state after the switch button 5 is turned on and powered on, the reset of the calibration work can be realized by using the reset button 7, the display screen 10 is cleared, the calibration data is reset to zero, and the optical alarm 8 and the acoustic alarm 9 are restored to the problem-free state.

[0048] The optical alarm 8 and the acoustic alarm 9 are warning alarm components, which can complete the prompting of the calibration problem, the optical alarm 8 can give light reminder when the calibration problem occurs, avoiding missing problems, the acoustic alarm 9 can give a reminder when the calibration problem occurs, avoiding missing quality problems caused by human factors, playing a reminding role on the calibration work.

[0049] The single-chip microcomputer 16, the controller 17, the automatic recording and analysis module 18 and the self-diagnosis module 19 are signal processing and control components, the single-chip microcomputer 16 is used to realize signal data processing, process the digital signal converted by the signal conditioning module 15, display the torsional stress signal and the pass or fail on the display screen 10, and give control instructions to the controller 17 through the single-chip microcomputer 16 for further processing, playing a role of receiving, processing and judging data.

[0050] The controller 17 can convert and convey the control instructions sent by the single-chip microcomputer 16, when the calibration result is unqualified, the controller 17 controls the optical alarm 8 and the acoustic alarm 9 to give corresponding warning, only when the reset button 7 is pressed can the warning be eliminated, the automatic recording and analysis module 18 can realize the recording of the calibration result, after one calibration is completed, the automatic recording and analysis module 18 can automatically record the calibration result, analyze the calibration result, and process together with the single-chip microcomputer 16 to form control instructions;

[0051] The self-diagnosis module 19 is used to realize the diagnosis processing after operation, to exclude the calibration mistakes caused by the failure of the digital calibration device itself, and to affect the reliability and accuracy of the calibration work.

[0052] The specific working process is as follows:

[0053] Step one: before use, check the appearance of the calibration device and check whether the device label is complete, the appearance is intact, and the complete condition is used for the next operation;

[0054] Step two: press the switch button 5 to turn on the calibration device, check the on-off condition of the calibration device circuit, the display screen 10 display condition, and ensure that the calibration device function is good;

[0055] Step three: press the calibration button 6 to start the calibration work, use manual to adjust the measurement tool to the corresponding gear position, and place it on the corresponding screw thread measuring body 2 or hexagonal measuring body 3, pull the measurement tool to work, and observe the display screen 10 display condition;

[0056] Step four: when the optical alarm 8 and the acoustic alarm 9 give unqualified indication, press the reset button 7 to clear the display screen 10 and the optical alarm 8 and the acoustic alarm 9 warning, repeat step three, and perform secondary calibration work;

[0057] Step five: after the calibration is completed in turn, press the switch button 5, power off the entire calibration device, and put the digital calibration device of the torsional stress measuring tool back to the original position, complete the calibration work.

[0058] The above merely describes the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make several modifications or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A digital calibration device for torsion stress measurement tool, characterized in that, it is composed of mechanical connection structure, calibration execution structure and digital control structure; the mechanical connection structure is composed of outer shape member (1), protective sleeve (4), display screen (10), HDMI port (11) and HTTP port (12); the calibration execution structure is composed of threaded measuring body (2), hexagonal measuring body (3), torsion stress sensor (13), data acquisition module (14) and signal conditioning module (15); the digital control structure is composed of switch button (5), calibration button (6), reset button (7), optical alarm (8), acoustic alarm (9), single-chip microcomputer (16), controller (17), automatic recording and analysis module (18) and self-diagnosis module (19).

2. The digital calibration device for torsion stress measurement tool according to claim 1, characterized in that, the outer shape member (1) is a bearing and protection member, the remaining members are installed on the outer shape member (1) by bolt connection, the bolt installation facilitates disassembly and maintenance, and the outer shape member (1) can also protect the internal components, playing a bearing and protection role; the protective sleeve (4) is a supporting member, the protective sleeve (4) is used to realize the connection of the threaded measuring body (2) and the hexagonal measuring body (3) with the outer shape member (1), and the protective sleeve (4) is used to position and fix the threaded measuring body (2) and the hexagonal measuring body (3), preventing excessive stress from causing fluctuations during calibration, and playing a positioning and supporting role for the digital calibration device.

3. The digital calibration device for torsion stress measurement tool according to claim 2, characterized in that, the display screen (10) is a display member, the calibration torsion stress value and calibration conclusion can be displayed on the display screen (10), and the working status of the optical alarm (8) and the acoustic alarm (9) is also displayed on the display screen (10), playing a display role.

4. The digital calibration device for torsion stress measurement tool according to claim 3, characterized in that, the HDMI port (11) and the HTTP port (12) are expansion members, the HDMI port (11) and the HTTP port (12) are used to expand the functions, the HDMI port (11) can be connected with a digital display large screen or an upper computer, the display information of the display screen (10) is expanded to the digital display large screen or the upper computer, realizing the expansion of digital display, the HTTP port (12) can be connected with the upper computer, and software upgrade and program embedding are realized through the upper computer, avoiding calibration failure caused by low software version, playing a function expansion role.

5. The digital calibration device for torsion stress measurement tool according to claim 4, characterized in that, The thread measuring body (2) and the hexagon measuring body (3) are execution components of calibration work, and the calibration work of the torsional stress measuring tool can be realized by using the thread measuring body (2) or the hexagon measuring body (3), the thread measuring body (2) is used for the calibration of the torsional stress measuring tool such as a screw, the hexagon measuring body (3) is used for the calibration of the torsional stress measuring tool such as a bolt, and the thread measuring body (2) and the hexagon measuring body (3) are connected with the torsional stress sensor (13), and the torsional stress of the torsional stress measuring tool is indirectly transmitted to the torsional stress sensor (13), thereby playing a torsional stress transmission role.

6. The digital calibration device for the torsional stress measuring tool according to claim 5, characterized in that, The torsional stress sensor (13), the data acquisition module (14) and the signal conditioning module (15) are sensing, collecting and processing components, and the required data can be acquired and used, the torsional stress sensor (13) senses the data transmitted by the thread measuring body (2) and the hexagon measuring body (3), acquires the torsional stress simulation signal of the torsional stress measuring tool, and the simulation signal cannot be used directly, so the data acquisition module (14) is needed for signal acquisition, the data acquisition module (14) is used to collect the sensing simulation signal of the torsional stress sensor (13), and the collected simulation signal is transmitted to the signal conditioning module (15) for processing, thereby playing a data collection role, and the signal conditioning module (15) processes the simulation signal collected by the data acquisition module (14), converts the simulation signal into a digital signal that can be received by a control system, such as converting a stress signal into a voltage signal that can be received by a single-chip microcomputer (16), thereby playing an analog-digital conversion role.

7. The digital calibration device for the torsional stress measuring tool according to claim 6, characterized in that, The switch button (5), the calibration button (6) and the reset button (7) are control input components, and play a role in controlling the switch, execution and reset of the digital calibration device, the switch button (5) is used to realize the power-on and power-off, the power-on self-test is performed when the power is turned on, the display screen (10) displays normally, and the power is turned off when the power is turned off, thereby preventing potential risks, the calibration button (6) is used to realize the start of the calibration work, the calibration work is in a static state after the power is turned on, and the calibration work can be started after the calibration button (6) is pressed, and the reset button (7) is used to realize the reset of the calibration work, which is directly reflected by the clearing of the display screen (10), the calibration data being reset to zero, and the optical alarm (8) and the acoustic alarm (9) returning to a problem-free state.

8. The digital calibration device for the torsional stress measuring tool according to claim 7, characterized in that, The optical alarm (8) and the acoustic alarm (9) are warning alarm components, and can complete the prompt of the calibration problem, the optical alarm (8) can emit light to remind when the calibration problem occurs, thereby avoiding missing problems, and the acoustic alarm (9) can emit a reminder when the calibration problem occurs, thereby avoiding missing quality problems due to human factors, and playing a reminding role for the calibration work.

9. The digital calibration device for torsion stress measuring tool according to claim 8, characterized in that, The single-chip microcomputer (16), the controller (17), the automatic recording and analyzing module (18) and the self-diagnosis module (19) are signal processing and control components, the single-chip microcomputer (16) is used to realize signal data processing, process the digital signal converted by the signal conditioning module (15), display the torsion stress signal and the pass or fail on the display screen (10), and send control instructions to the controller (17) through the single-chip microcomputer (16) for further processing, thereby playing a role in receiving, processing and judging data.

10. The digital calibration device for torsion stress measuring tool according to claim 9, characterized in that, The controller (17) is used to convert and transmit the control instructions sent by the single-chip microcomputer (16), when the calibration result is unqualified, the controller (17) controls the optical alarm (8) and the acoustic alarm (9) to send corresponding warnings, the warnings can be eliminated only when the reset button (7) is pressed, the automatic recording and analyzing module (18) can realize recording of the calibration result, automatically record the calibration result after one calibration is completed, analyze the calibration result, and process the calibration result together with the single-chip microcomputer (16) to form control instructions; The self-diagnosis module (19) is used to realize post-operation diagnosis processing, eliminate calibration mistakes caused by faults of the digital calibration device itself, and affect the reliability and accuracy of the calibration work.

Images