Intelligent sensor-based industrial-grade transmitting assembly, industrial measuring device and measuring method thereof

Abstract

This invention relates to the field of intelligent sensing and measurement technology, specifically to an industrial-grade transmitting component, industrial measuring device, and measurement method based on intelligent sensing. The device includes an intelligent measuring instrument, a wireless sensing relay receiver, an image display, an operating table, a support frame, and a switching switch. The support frame is mounted on the operating table, and the switching switch is mounted on the support frame. A drive mechanism is mounted on the support frame, and the intelligent measuring instrument is connected to the drive mechanism. An instantaneous yaw mechanism is mounted on the support frame, cooperating with both the drive mechanism and the switching switch. This invention achieves full-process automation of "one-time completion, automatic track changing, and return retesting," enabling multi-reference composite measurement to be completed within a single work cycle without manual intervention. This significantly improves the efficiency and reliability of length measurement for large batches of workpieces in industrial settings and reduces misjudgments and rework rates caused by a single reference.

Description

Technical Field

[0001] This invention relates to the field of intelligent sensing and measurement technology, specifically to industrial-grade transmitting components, industrial measuring devices, and measurement methods based on intelligent sensing. Background Technology

[0002] In industrial manufacturing processes, the length of the object being measured (such as sheet metal, profiles, or precision parts) is typically measured using contact or laser single-path measurement methods. This method first fixes the measuring instrument at a reference position, then completes a scan along the length of the object in one go, and finally uses the measured value as the sole criterion for whether the finished product is qualified or not.

[0003] However, with the acceleration of production line cycles, the diversification of material surface conditions, and the increase in environmental disturbances, single-path measurement has gradually revealed the following drawbacks:

[0004] When the surface of the object being measured has local scratches, slight warping, or adhered foreign matter, the data obtained by the measuring instrument at that location will deviate from the true value. Because there is only one sample, the system cannot determine whether this deviation stems from out-of-tolerance dimensions or momentary interference, leading to a lack of basis for subsequent sorting, rework, or scrapping decisions. Traditional devices fix the measurement starting reference at the edge of the production line or the tooling positioning surface. If the reference itself experiences a slight shift due to mechanical wear, temperature drift, or assembly errors, all subsequent measurements carry the same systematic deviation in the same direction and of the same magnitude, making it difficult to detect and correct in a timely manner within the process closed loop. To reduce the risk of misjudgment, on-site sampling or full inspection is often required followed by manual secondary measurement. The re-inspection process relies on manually moving measuring tools or re-clamping workpieces, disrupting continuous production and increasing labor costs and human error. Most existing measuring instruments only have local display or simple serial port output functions, lacking a real-time data link between measurement results and management systems such as MES and SPC. Quality traceability relies on manual input, easily creating information gaps.

[0005] In summary, the traditional "single path, single reference" measurement mode can no longer meet the urgent needs of modern industry for high reliability, high efficiency and data closed loop. There is an urgent need for an intelligent measurement solution that can automatically switch the measurement starting reference on the same workpiece, perform multi-point re-measurement and upload data in real time. Summary of the Invention

[0006] The purpose of this invention is to provide an industrial-grade transmitting component, an industrial measuring device, and a measuring method based on intelligent sensing, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An industrial-grade transmitting component based on intelligent sensing includes an intelligent measuring instrument that communicates with a wireless sensing relay receiver and is capable of alternating movement along the length and width directions of the object being measured.

[0009] When the intelligent measuring instrument moves along the length direction of the object being measured, it can measure the length of the object being measured; after the intelligent measuring instrument moves along the width direction of the object being measured, it moves again along the length direction of the object being measured, so as to measure the length of the same object being measured based on different position references.

[0010] The wireless sensor relay receiver is also connected to an image display, which is used to display the current position image in real time when the intelligent measuring instrument measures the object at the same position reference, and to transmit the length parameter at the current position to the terminal device.

[0011] An industrial measuring device includes an industrial-grade transmitting assembly as described above, and also includes an operating table, a support frame, and a switching switch, wherein the support frame is disposed on the operating table, and the switching switch is disposed on the support frame;

[0012] The support frame is equipped with a drive mechanism, and the intelligent measuring instrument is connected to the drive mechanism. When the drive mechanism is running, the intelligent measuring instrument will move along the length direction of the object being measured.

[0013] The support frame is equipped with an instantaneous sway mechanism, which cooperates with the drive mechanism and the switching switch. When the drive mechanism moves the intelligent measuring instrument to one end of the object being measured, the instantaneous sway mechanism will cooperate with the drive mechanism through the transmission structure to move the intelligent measuring instrument along the width direction of the object being measured. At the same time, the switching switch will also be triggered by the instantaneous sway mechanism, and the switching switch will cause the drive mechanism to move the intelligent measuring instrument back along the length direction of different measurement starting positions of the object being measured.

[0014] After the image display transmits the length parameter at the current position to the terminal device, the parameter signal is received by the receiver integrated on the terminal device.

[0015] As a further embodiment of the present invention: the driving mechanism includes a fixed plate and a movable plate, the fixed plate is fixedly connected to the support frame, and the movable plate is slidably disposed on the fixed plate along the width direction of the object to be measured;

[0016] A slide block is slidably disposed on the movable plate along the length direction of the object to be measured. The intelligent measuring instrument is disposed on the slide block. A lead screw is rotatably disposed on the movable plate. The slide block and the lead screw are threadedly engaged.

[0017] As a further embodiment of the present invention: a progress motor is provided on the moving plate, and the output end of the progress motor is coaxially and fixedly connected to one end of the lead screw;

[0018] A push rod is provided at one end of the slide. When the advance motor is running, the slide will drive the intelligent measuring instrument and the push rod to move together along the length direction of the object to be measured.

[0019] As a further embodiment of the present invention: the driving mechanism further includes a first pulley and a second pulley, both of which are rotatably mounted on the fixed plate;

[0020] The first pulley and the second pulley are arranged along the width direction of the object to be measured, and the first pulley and the second pulley are connected by a first toothed belt. A U-shaped block is provided on the first toothed belt, and the U-shaped block is fixedly connected to the moving plate.

[0021] As a further embodiment of the present invention: the instantaneous yaw mechanism includes a rotating shaft and a swing rod, wherein the rotating shaft is rotatably mounted on the support frame;

[0022] One end of the swing arm is fixedly connected to the rotating shaft, and the other end of the swing arm corresponds to the push rod and the switching switch respectively.

[0023] As a further embodiment of the present invention: a cylinder is provided on the support frame, and a limit post is also provided on the support frame;

[0024] The swing arm is provided with a protruding post, which is located in the middle section of the swing arm.

[0025] As a further embodiment of the present invention: the cylinder and the protruding post are connected by a hook spring, and the hook spring is in a stretched state. Under the action of the hook spring, the swing rod abuts against the limiting post.

[0026] When the intelligent measuring instrument moves to one end of the object being measured, the swing arm will deflect under the push of the push rod. During this process, the hook spring is stretched continuously. When the hook spring is stretched to its maximum, the hook spring will contract rapidly when the push rod continues to push, thereby causing the swing arm to deflect rapidly and the rotating shaft to rotate rapidly. At the same time, the swing arm will trigger the switching switch, which will drive the progress motor to rotate in the opposite direction.

[0027] As a further embodiment of the present invention: the transmission structure includes a third pulley and a fourth pulley, wherein the third pulley is coaxially arranged on the rotating shaft;

[0028] The fourth pulley is coaxially and fixedly connected to the first pulley, and the third pulley and the fourth pulley are connected by a second toothed belt.

[0029] A method for measuring the length of an object using the industrial measuring device described above includes the following steps:

[0030] Step 1: Starting point scanning, the advance motor drives the slide block via the lead screw, causing the intelligent measuring instrument to scan along the length direction, measure the initial value L0 and upload it in real time;

[0031] Step 2: Instantaneous track switching. The push rod at the end of the slide block strikes the swing arm, releasing the stored energy of the spring. Through the linkage of the pulley and toothed belt, the moving plate slides laterally, switching the reference and triggering the switch to reverse the motor.

[0032] Step 3: Return trip retest, the motor reverses, the intelligent measuring instrument measures L1 at the new benchmark during the return trip, and the data is transmitted back to the terminal for comparison and analysis in real time;

[0033] Step 4: Reset cycle. Reset the pendulum, and repeat the cycle of track changing and retesting until the multi-point closed loop is completed.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] This solution utilizes an alternating "length-width-length" measurement path, enabling the intelligent measuring instrument to re-establish the measurement starting reference at different width positions. This allows for multiple non-collinear length measurements of the same object, transforming potential random errors on a single path (such as local defects on the object's surface, guide deviations, temperature gradients, etc.) into identifiable discrete data. The wireless sensor relay receiver transmits the measured length parameters in real time to the image display and terminal device. This simultaneously presents the image of the current measurement position on the display and generates a multi-point length cloud map on the terminal, facilitating operators to instantly identify anomalies and trace the source of errors. The closed-loop coordination of the instantaneous yaw mechanism and the switching switch achieves full automation of the entire process: "one-time completion, automatic track changing, and return re-measurement." Multi-reference composite measurements can be completed within a single work cycle without manual intervention, significantly improving the efficiency and reliability of length measurement for large batches of workpieces in industrial settings and reducing misjudgments and rework rates caused by a single reference. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of one embodiment of an industrial measuring device.

[0037] Figure 2 This is a schematic diagram of the overall structure from another perspective of one embodiment of an industrial measuring device.

[0038] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0039] Figure 4 for Figure 2 Enlarged view of section B in the middle.

[0040] Figure 5 This is another perspective schematic diagram of the overall structure of an embodiment of an industrial measuring device.

[0041] Figure 6 for Figure 5 Enlarged view of point C in the middle.

[0042] Figure 7 This is a front view of the overall structure of one embodiment of an industrial measuring device.

[0043] Figure 8 This is a schematic diagram of an industrial measuring device after the image display has been removed, according to one embodiment.

[0044] Figure 9 for Figure 8 Enlarged view of point D in the middle.

[0045] Figure 10 This is another perspective view of the overall structure of an embodiment of an industrial measuring device.

[0046] In the diagram: 1. Intelligent measuring instrument; 2. Wireless sensor relay receiver; 3. Image display; 4. Operating console; 5. Support frame; 6. Switch; 7. Fixed plate; 8. Moving plate; 9. Slide; 10. Lead screw; 11. Progress motor; 12. Pulley No. 1; 13. Pulley No. 2; 14. First toothed belt; 15. U-shaped block; 16. Push rod; 17. Rotating shaft; 18. Swing rod; 19. Cylinder; 20. Limiting post; 21. Protruding post; 22. Hook spring; 23. Pulley No. 3; 24. Pulley No. 4; 25. Second toothed belt. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0049] Please see Figure 1 In this embodiment of the invention, an industrial-grade transmitting component based on intelligent sensing includes an intelligent measuring instrument 1, which communicates with a wireless sensing relay receiver 2, and the intelligent measuring instrument 1 can move alternately along the length and width directions of the object being measured.

[0050] When the intelligent measuring instrument 1 moves along the length direction of the object being measured, it can measure the length of the object being measured; after the intelligent measuring instrument 1 moves along the width direction of the object being measured, it moves again along the length direction of the object being measured, so as to measure the length of the same object being measured based on different position references.

[0051] The wireless sensor relay receiver 2 is also connected to the image display 3, which is used to display the current position image in real time and transmit the length parameter at the current position to the terminal device when the intelligent measuring instrument 1 measures the object at the same position reference.

[0052] This solution allows the intelligent measuring instrument 1 to change its position in the width direction of the object being measured, thereby enabling length measurement of the same object at different starting positions, thus avoiding deviations in measurement results due to accidental errors under the same reference.

[0053] Please see Figures 1-10 In this embodiment of the invention, an industrial measuring device includes an industrial-grade transmitting component as described above, and also includes an operating table 4, a support frame 5, and a switching switch 6. The support frame 5 is disposed on the operating table 4, and the switching switch 6 is disposed on the support frame 5.

[0054] The support frame 5 is equipped with a drive mechanism, and the intelligent measuring instrument 1 is connected to the drive mechanism. When the drive mechanism is running, the intelligent measuring instrument 1 will move along the length direction of the object being measured.

[0055] The support frame 5 is equipped with an instantaneous sway mechanism, which cooperates with the drive mechanism and the switching switch 6. When the drive mechanism moves the intelligent measuring instrument 1 to one end of the object being measured, the instantaneous sway mechanism will cooperate with the drive mechanism through the transmission structure to move the intelligent measuring instrument 1 along the width direction of the object being measured. At the same time, the switching switch 6 will also be triggered by the instantaneous sway mechanism, and the switching switch 6 will cause the drive mechanism to move the intelligent measuring instrument 1 back along the length direction of different measurement starting positions of the object being measured.

[0056] After the image display 3 transmits the length parameter at the current position to the terminal device, the parameter signal is received by the receiver integrated on the terminal device.

[0057] In this scheme, during initialization, the object to be measured is placed flat on the operating table 4, with the support frame 5 spanning across it. The drive mechanism positions the intelligent measuring instrument 1 at the zero position (starting reference A0) in the length direction of the object to be measured. The wireless sensor relay receiver 2, image display 3, and terminal equipment are all powered on and have completed communication.

[0058] In the first length measurement (along the length direction), the drive mechanism runs forward, and the intelligent measuring instrument 1 moves at a constant speed in the length direction. The laser and vision sensors of the intelligent measuring instrument 1 collect edge or scale information in real time, and the internal algorithm calculates the "length L0" in real time. At the same time, the image display 3 transmits the real-time image and the L0 value to the terminal device via the wireless sensor relay receiver 2; the terminal device displays the curve or number on the screen synchronously.

[0059] Upon reaching the endpoint, the "instantaneous yaw" is triggered. When the intelligent measuring instrument 1 reaches the end of the object being measured, the mechanical impact block (or photoelectric trigger) activates the instantaneous yaw mechanism. The instantaneous yaw mechanism enables the intelligent measuring instrument 1 to complete a lateral (width direction) displacement ΔW in a very short time and reach the new starting reference A1.

[0060] The lateral displacement simultaneously activates the switching switch 6, which sends a "reverse + offset compensation" command to the drive mechanism.

[0061] In the second length measurement (return trip from a different reference), the drive mechanism runs in the opposite direction, and the intelligent measuring instrument 1 moves back from A1 along the length direction to measure the length L1 again. The length L1 is then transmitted back to the terminal device in real time via a wireless link. Since the starting reference has changed, the difference between L1 and L0 can be used to assess system errors or local deformation.

[0062] Please see Figure 3 , Figure 6 and Figure 7 The driving mechanism includes a fixed plate 7 and a movable plate 8. The fixed plate 7 is fixedly connected to the support frame 5, and the movable plate 8 is slidably disposed on the fixed plate 7 along the width direction of the object to be measured.

[0063] A slide block 9 is slidably disposed on the movable plate 8 along the length direction of the object to be measured. The intelligent measuring instrument 1 is disposed on the slide block 9. A lead screw 10 is rotatably disposed on the movable plate 8. The slide block 9 and the lead screw 10 are threadedly engaged.

[0064] The movable plate 8 is equipped with a progressive motor 11, and the output end of the progressive motor 11 is coaxially and fixedly connected to one end of the lead screw 10.

[0065] A push rod 16 is provided at one end of the slide 9. When the advance motor 11 is running, the slide 9 will drive the intelligent measuring instrument 1 and the push rod 16 to move together along the length direction of the object to be measured.

[0066] The drive mechanism also includes a first pulley 12 and a second pulley 13, both of which are rotatably mounted on the fixed plate 7.

[0067] The first pulley 12 and the second pulley 13 are arranged along the width direction of the object to be measured, and the first pulley 12 and the second pulley 13 are connected by a first toothed belt 14. A U-shaped block 15 is provided on the first toothed belt 14, and the U-shaped block 15 is fixedly connected to the moving plate 8.

[0068] In this embodiment, the feed is made in the length direction. After the advance motor 11 is energized, it drives the lead screw 10 to rotate. The lead screw 10 and the slide 9 form a helical pair, which converts the rotational motion into linear motion, so that the slide 9 and the intelligent measuring instrument 1 and push rod 16 fixed on it move together along the guide rail of the moving plate 8 in the length direction of the object to be measured, thus completing one length measurement.

[0069] In the width direction track switching (instantaneous yaw stage), when the slide 9 reaches the end of its stroke, the push rod 16 strikes the trigger of the instantaneous yaw mechanism, driving the mechanism to switch the motion chain:

[0070] The first pulley 12 begins to rotate under the drive of the oscillation mechanism;

[0071] The first toothed belt 14 then rotates, driving the U-shaped block 15 fixed to it;

[0072] The U-shaped block 15 is rigidly connected to the moving plate 8, thus pulling the moving plate 8 to slide along the transverse guide rail of the fixed plate 7 as a whole, realizing the displacement of the intelligent measuring instrument 1 in the width direction of the object to be measured, thereby establishing a new measurement starting reference.

[0073] After the length direction returns and the width displacement is in place, the advance motor 11 rotates in the opposite direction, and the lead screw 10 drives the slide 9 to retract in the opposite direction; at this time, the intelligent measuring instrument 1 is located in the new width coordinate, so it completes another length measurement along the length direction under this coordinate.

[0074] Throughout the process, the synchronous belt system consisting of pulley 12, pulley 13 and toothed belt 14 ensures that the lateral displacement of moving plate 8 and the longitudinal displacement of slide 9 do not interfere with each other and are sequentially connected, realizing fully automatic multi-point retesting.

[0075] Please see Figure 4 and Figure 9 The instantaneous yaw mechanism includes a rotating shaft 17 and a swing rod 18, wherein the rotating shaft 17 is rotatably mounted on the support frame 5;

[0076] One end of the swing arm 18 is fixedly connected to the rotating shaft 17, and the other end of the swing arm 18 corresponds to the push rod 16 and the switching switch 6 respectively;

[0077] A cylinder 19 is provided on the support frame 5, and a limit post 20 is also provided on the support frame 5;

[0078] The swing arm 18 is provided with a protruding post 21, which is located in the middle section of the swing arm 18;

[0079] The cylinder 19 and the protruding post 21 are connected by a hook spring 22, and the hook spring 22 is in a stretched state. Under the action of the hook spring 22, the swing rod 18 abuts against the limiting post 20.

[0080] When the intelligent measuring instrument 1 moves to one end of the object being measured, the swing arm 18 will deflect under the push of the push rod 16. During this process, the hook spring 22 is stretched continuously. When the hook spring 22 is stretched to its maximum, the push rod 16 continues to push, and the hook spring 22 will quickly contract, thereby driving the swing arm 18 to deflect quickly and the rotating shaft 17 to rotate quickly. At the same time, the swing arm 18 will trigger the switching switch 6, and the switching switch 6 will drive the progress motor 11 to rotate in the opposite direction.

[0081] In this embodiment, during the power-accumulation phase, the hook spring 22 is always in a stretched state, and its pulling force on the protrusion 21 makes the swing rod 18 press tightly against the limit post 20. At this time, the swing rod 18 maintains a stable initial posture, which neither hinders the straight forward movement of the push rod 16 nor touches the switching switch 6.

[0082] In the critical stage, when the intelligent measuring instrument 1 reaches the final position, the front end of the push rod 16 contacts the tail end of the swing rod 18 and continues to apply the push force. The swing rod 18 begins to swing slowly with the pivot 17 as the fulcrum. The tension of the hook spring 22 increases accordingly, and the elastic potential energy accumulates continuously. The limit post 20 ensures that the swing direction is unique and avoids lateral movement.

[0083] During the triggering phase, once the push of the push rod 16 causes the hook spring 22 to pass the maximum tension point, the direction of the spring force instantly reverses, the elastic potential energy is released rapidly, and the hook spring 22 quickly changes from tension to contraction, generating an instantaneous pull-back force; this force causes the swing rod 18 to obtain angular acceleration through the protrusion 21, completing a rapid deflection;

[0084] During the rapid deflection process, the tail end of the swing arm 18 strikes the switching switch 6, and the switching switch 6 immediately sends a reverse signal, driving the advance motor 11 to reverse; at the same time, the rapid rotation of the rotating shaft 17 pulls the moving plate 8 to move laterally through the transmission structure, realizing the instantaneous switching of the measurement reference.

[0085] During the reset phase, when the push rod 16 returns with the slide block 9 and disengages from the rocker arm 18, the hook spring 22 pulls back the protrusion 21 again, causing the rocker arm 18 to abut against the limit post 20 again, and the mechanism returns to the initial storage state, ready for the next cycle.

[0086] Please see Figure 3 and Figure 10 The transmission structure includes a third pulley 23 and a fourth pulley 24, with the third pulley 23 coaxially mounted on the rotating shaft 17.

[0087] The fourth pulley 24 is coaxially and fixedly connected to the first pulley 12, and the third pulley 23 and the fourth pulley 24 are connected by a second toothed belt 25.

[0088] In this embodiment, the rotating shaft 17 rotates instantaneously at high speed under the drive of the swing arm 18; since the third pulley 23 is coaxially fixed with the rotating shaft 17, the angular velocity of the rotating shaft 17 is directly transmitted to the third pulley 23;

[0089] The third pulley 23 and the fourth pulley 24 form a closed-loop synchronous transmission through the second toothed belt 25; the second toothed belt 25 has no slippage, ensuring that the angular displacement of the third pulley 23 is accurately copied to the fourth pulley 24 at a fixed speed ratio;

[0090] The fourth pulley 24 is fixed coaxially with the first pulley 12, so the rotation of the fourth pulley 24 directly drives the first pulley 12; the first pulley 12 pulls the U-shaped block 15 through the first toothed belt 14, so that the moving plate 8 (and the intelligent measuring instrument 1 installed on it) generates an instantaneous displacement in the width direction of the object to be measured, thus completing the switching of the measurement reference.

[0091] A method for measuring the length of an object using the industrial measuring device described above includes the following steps:

[0092] Step 1: Starting point scanning, the advance motor drives the slide block via the lead screw, causing the intelligent measuring instrument to scan along the length direction, measure the initial value L0 and upload it in real time;

[0093] Step 2: Instantaneous track switching. The push rod at the end of the slide block strikes the swing arm, releasing the stored energy of the spring. Through the linkage of the pulley and toothed belt, the moving plate slides laterally, switching the reference and triggering the switch to reverse the motor.

[0094] Step 3: Return trip retest, the motor reverses, the intelligent measuring instrument measures L1 at the new benchmark during the return trip, and the data is transmitted back to the terminal for comparison and analysis in real time;

[0095] Step 4: Reset cycle. Reset the pendulum, and repeat the cycle of track changing and retesting until the multi-point closed loop is completed.

[0096] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0097] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An industrial measuring device, comprising an industrial-grade transmitting assembly based on intelligent sensing, the transmitting assembly comprising an intelligent measuring instrument (1) in communication with a wireless sensing relay receiver (2) arranged, the intelligent measuring instrument (1) being capable of moving along the length and width of the measured object alternately; when the intelligent measuring instrument (1) moves along the length of the measured object, the length of the measured object can be measured; after the intelligent measuring instrument (1) moves along the width of the measured object, it moves along the length of the measured object again to measure the length of the same measured object based on different position references; the wireless sensing relay receiver (2) is further connected with an image display (3) for displaying the image of the current position in real time when the intelligent measuring instrument (1) measures the measured object at the same position reference, and transmitting the length parameter at the current position to a terminal device, characterized in that it further comprises an operation table (4), a support frame (5) and a switching switch (6), the support frame (5) being arranged on the operation table (4), and the switching switch (6) being arranged on the support frame (5); a driving mechanism is arranged on the support frame (5), the intelligent measuring instrument (1) being connected with the driving mechanism, and when the driving mechanism operates, the intelligent measuring instrument (1) moves along the length of the measured object; a transient yawing mechanism is arranged on the support frame (5), the transient yawing mechanism being matched with the driving mechanism and the switching switch (6) respectively, when the driving mechanism drives the intelligent measuring instrument (1) to move to one end of the measured object, the transient yawing mechanism drives the intelligent measuring instrument (1) to move along the width of the measured object through a transmission structure matched with the driving mechanism, and at the same time, the switching switch (6) is triggered by the transient yawing mechanism, the switching switch (6) drives the driving mechanism to drive the intelligent measuring instrument (1) to move along the length of the measured object in the return direction from different measuring starting positions of the measured object; after the image display (3) transmits the length parameter at the current position to the terminal device, the parameter signal is received by a receiver integrated on the terminal device. wherein The driving mechanism comprises a fixed plate (7) and a moving plate (8), the fixed plate (7) being fixedly connected with the support frame (5), and the moving plate (8) being slidably arranged on the fixed plate (7) along the width of the measured object; a sliding seat (9) is slidably arranged on the moving plate (8) along the length of the measured object, the intelligent measuring instrument (1) being arranged on the sliding seat (9), a lead screw (10) being rotatably arranged on the moving plate (8), and the sliding seat (9) being threadedly matched with the lead screw (10). a further motor (11) is arranged on the moving plate (8), an output end of the further motor (11) being fixedly connected with one end of the lead screw (10) coaxially. ​ ​ ​ 2. An industrial measuring device according to claim 1, characterised in that ​ ​ 3. An industrial measuring device according to claim 2, characterised in that ​ One end of the sliding seat (9) is provided with a push rod (16), when the step motor (11) is running, the sliding seat (9) will drive the intelligent measuring instrument (1) and the push rod (16) together along the length direction of the measured object.

4. An industrial measuring device according to claim 3, characterised in that The driving mechanism further comprises a first pulley (12) and a second pulley (13), the first pulley (12) and the second pulley (13) are both rotationally arranged on the fixed plate (7); The first pulley (12) and the second pulley (13) are arranged along the width direction of the measured object, and the first pulley (12) and the second pulley (13) are connected by a first toothed belt (14), the U-shaped block (15) is arranged on the first toothed belt (14), and the U-shaped block (15) is fixedly connected with the moving plate (8).

5. An industrial measuring device according to claim 4, characterised in that The instantaneous deflection mechanism comprises a rotating shaft (17) and a swing rod (18), the rotating shaft (17) is rotationally arranged on the support frame (5); One end of the swing rod (18) is fixedly connected with the rotating shaft (17), and the other end of the swing rod (18) corresponds to the push rod (16) and the switch (6) respectively.

6. An industrial measuring device according to claim 5, characterised in that The support frame (5) is provided with a cylinder (19), and the support frame (5) is further provided with a limiting column (20); The swing rod (18) is provided with a convex column (21), and the convex column (21) is located at the middle segment of the swing rod (18).

7. An industrial measuring device according to claim 6, characterised in that The cylinder (19) and the convex column (21) are connected by a hook spring (22), and the hook spring (22) is in a stretched state, and the swing rod (18) abuts against the limiting column (20) under the action of the hook spring (22); When the intelligent measuring instrument (1) moves to one end of the measured object, the swing rod (18) will be deflected under the pushing of the push rod (16), in this process, the hook spring (22) is continuously stretched, when the hook spring (22) is stretched to the maximum, the push rod (16) continues to push, the hook spring (22) will quickly contract, thereby driving the swing rod (18) to quickly deflect and the rotating shaft (17) to quickly rotate, at the same time, the swing rod (18) will trigger the switch (6), and the switch (6) will drive the step motor (11) to rotate reversely.

8. An industrial measuring device according to claim 7, characterised in that The transmission structure comprises a third pulley (23) and a fourth pulley (24), the third pulley (23) is coaxially arranged on the rotating shaft (17); The fourth pulley (24) is coaxially fixedly connected with the first pulley (12), and the third pulley (23) and the fourth pulley (24) are connected by a second toothed belt (25).

9. A method of measuring the length of an object using the industrial measuring device according to claim 8, characterized in that, The method comprises the following steps: Step one: starting point scanning, the step motor drives the sliding seat through the lead screw, so that the intelligent measuring instrument scans along the length direction, the first value L0 is measured and is uploaded in real time; Step two: instantaneous displacement and track switching, the push rod at the end of the sliding seat strikes the swing rod, the spring energy is released, the moving plate is transversely shifted through the linkage of the pulleys and the toothed belts, the switch is triggered to make the motor reverse. Step three: return trip retest, motor reverse, intelligent measuring instrument on the new benchmark return trip measured L1, data real-time back to terminal comparison and analysis; Step four: reset cycle, reset the swing rod, device cycle track retest until the completion of multi-point closed loop.

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