Coding code band with read head structure and system

Abstract

The invention relates to the related technical field of coding equipment, in particular to a coding code band with a read head structure and a system, comprising two mounting racks mounted on other equipment, the two mounting racks are connected and fixed through a two-way threaded rod I, and further comprising a code band piece in the shape of a linearly extending ruler with a square cross section, a plurality of through hole grooves are formed in the belt stacking piece, a distance is reserved between every two through hole grooves, and the through hole grooves are linearly arranged at equal intervals in the extending direction of the belt stacking piece. Electric pulse signals can be formed on the photoelectric sensor through interval transmission of light signals, then the output end of the controller receives the electric pulse signals after the photoelectric sensor senses the light signals and then forms digital information, and the digital information is displayed in a display screen on the controller in a character mode. And then the controller controls the starting operation of the motor according to the digital information so as to control the position of the reading head main body.

Description

Technical Field

[0001] The present invention relates to a code tape, in particular to a coding code tape with a reader structure and a system, belonging to the technical field related to coding equipment. Background Art

[0002] In the use of precision equipment, single linear direction moving structures play an important role. Such structures can help the equipment complete linear movement and work operations, mainly by virtue of the convenience of linear movement, to transport materials and change position relationships, or to make a certain structure in the equipment move in a linear direction in a specific programming way, which is mostly achieved by linear rails. However, there are certain errors in the use of linear rails, especially in some precision industries, such as the field of robots. Traditional pure mechanical movements such as linear rail movement are not practical enough for use in these industries, especially when the distance is long and the movement speed is fast. The matching degree between these structures and the operating system is poor, and it is impossible to accurately control the start and stop position relationship of the structure after linear movement, and it is even more impossible to accurately provide position feedback, and it is impossible to help the system achieve precise motion control and positioning, which will affect the use of some precision structures.

[0003] Therefore, there is an urgent need to improve the coding code tape with a reader structure to solve the above-mentioned problems. Summary of the invention

[0004] The object of the present invention is to provide a coding code strip and system with a reader structure, which can be configured with a plurality of through-hole slots on the code strip, through which the light source can send light signals, and the input end of the photoelectric sensor on the side of the code strip away from the light source will receive the light signal, and the interval transmission of the light signal will form an electric pulse signal on the photoelectric sensor, and then the output end of the controller receives the electric pulse signal after the photoelectric sensor senses the light signal and forms digital information, and displays the digital information in text form on the display screen of the controller, and then the controller controls the start-up and operation of the motor with the digital information, and then controls the position of the reader body, and in this process, can accurately control the start-stop position relationship of the structure after linear movement, and accurately provide position feedback, to help the system achieve precise motion control and positioning, and help the precision structure achieve accurate position movement.

[0005] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the present invention include: a code belt for encoding with a reader structure, including two mounting frames for installation on other equipment, the two mounting frames are connected and fixed by a bidirectional threaded rod, and also include: a code belt member, the code belt member is shaped like a ruler with a square cross-section and linear extension, a plurality of through hole grooves are opened on the code belt member, and a distance is left between the plurality of through hole grooves, and the plurality of through hole grooves are linearly equidistantly arranged along the extension direction of the code belt member; a travel track, the travel track is connected to the mounting frame, a travel mechanism is provided on the travel track, and a reader body is provided on the travel mechanism; a driving component, the driving component is installed on the reader body, and the driving component is used to drive the travel mechanism to move on the travel track; a detection mechanism, the detection mechanism is arranged on the reader body, and the detection mechanism is used to detect the position information of the through hole grooves on the code belt member.

[0006] Preferably, the detection mechanism includes a controller and a photoelectric sensor located at a side position of one side of the code band member, the controller is installed on the outside of the reader body, the photoelectric sensor is used to sense the light passing through the through hole groove and form an electric pulse signal, the output end of the photoelectric sensor is connected to the input end of the controller, the output end of the controller receives the electric pulse signal after the photoelectric sensor senses the light source and forms digital information, and the controller is provided with a display screen, which displays the digital information in text form.

[0007] Preferably, the detection mechanism also includes a light source component, which is arranged on the reader body and located on the side of the code band component away from the photoelectric sensor. The output end of the light source component corresponds to the input end of the photoelectric sensor and is on the same vertical plane. The light signal output by the light source component is transmitted to the input end of the photoelectric sensor through the through hole groove.

[0008] Preferably, a box body with a conical opening on one side is connected to the inside of the reader body, and the light source is installed inside the box body. The conical opening on the box body faces one side of the code band component and contacts it. The box body is used to reduce the light loss of the light source and maintain a certain intensity.

[0009] Preferably, a fixing bracket is connected to the reader body, and the fixing bracket is located on the side of the code belt component away from the light source component. The fixing bracket is used to install and fix the photoelectric sensor and prevent the photoelectric sensor from tilting. An identification channel is provided on the reader body, and a light-shielding channel is provided at the input end and the output end of the identification channel.

[0010] Preferably, there are several light sources and several photoelectric sensors, and the positions of the several light sources correspond one by one to the positions of the several photoelectric sensors. The output ends of the several photoelectric sensors are connected to the input ends of the controller, and the controller is used to analyze the electrical pulse signals output by the several photoelectric sensors and display them through the display screen.

[0011] Preferably, the travel track includes a bidirectional threaded rod 2 located on both sides of the bidirectional threaded rod 1, and the two bidirectional threaded rods 2 are symmetrical, and both of the bidirectional threaded rods 2 are connected to the mounting frame.

[0012] Preferably, the travel mechanism includes a pulley frame fixedly connected to the reader body, two groups of pulley members connected to the pulley frame, each group of pulley members includes two pulley members, and the two groups of pulley members are respectively located on the two bidirectional threaded rods two, and the two pulley members on one group of pulley members are respectively fixedly connected to pulley one and double pulleys, and a transmission belt one is jointly mounted on the pulley one and the double pulleys.

[0013] Preferably, the driving assembly includes a motor, a second pulley and a second transmission belt installed on the reader body, the second pulley is connected to a side surface of the reader body close to the first pulley, the second transmission belt is sleeved on the second pulley and the double pulleys, the output end of the motor is connected to the second pulley, and the motor is electrically connected to the controller.

[0014] A system for encoding a code tape with a reader structure comprises the following steps:

[0015] S1: First, use a bidirectional threaded rod to adjust the two mounting frames to a suitable position, then install the code tape component on the mounting frame, and then install the reader body, the travel track and the travel mechanism on the mounting frame respectively, wherein the code tape component is located in the identification channel and the shading channel, and the device is installed on a suitable equipment structure using the mounting frame;

[0016] S2: Then, the controller output terminal outputs a control signal, and the control signal controls the motor to start running. The output terminal of the motor drives the second pulley to rotate, and the transmission belt drives the double pulleys to rotate through the second transmission belt, and then drives the first pulley to rotate through the first transmission belt. At this time, the pulley rotates under the drive of the double pulleys and the first pulley, so that the reader body connected to the travel mechanism moves on the travel track;

[0017] S3: When the reader body moves on the travel track, it will drive the light source and the photoelectric sensor connected to it to move. When the light signal output by the light source passes through the through-hole slot, it will be transmitted to the input end of the photoelectric sensor through the through-hole slot. When crossing the through-hole slot, it will be blocked by the distance between the two through-hole slots, so that the light signal cannot be transmitted. At this time, after receiving the light signal from the light source, the photoelectric sensor will form an interval electrical pulse signal;

[0018] S4: Then, the output end of the controller receives the electric pulse signal after the photoelectric sensor senses the light signal and forms digital information, and displays the digital information in text form on the display screen of the controller to facilitate observation by the operator. When the reader body moves to the vicinity of the pre-set position and continues to move, the controller will accurately identify the position information under the action of the photoelectric sensor and the light source. When the distance is accurate, a control signal is sent to the motor to stop the motor. At this time, the reader body stays at the pre-set position.

[0019] The present invention has at least the following beneficial effects:

[0020] 1. By setting a number of through-hole slots on the code belt component, the light source component can send light signals through the through-hole slots, and the input end of the photoelectric sensor on the side of the code belt component away from the light source component will receive the light signal, and the interval transmission of the light signal will form an electric pulse signal on the photoelectric sensor. Then the output end of the controller receives the electric pulse signal after the photoelectric sensor senses the light signal and forms digital information, and displays the digital information in text form on the display screen of the controller. Then the controller will control the start-up operation of the motor with the digital information, and then control the position of the reader body. In this process, the start-stop position relationship of the structure after linear movement can be accurately controlled, and accurate position feedback can be provided to help the system achieve precise motion control and positioning, and help the precision structure achieve accurate position movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 A schematic diagram of the three-dimensional structure provided by the present invention;

[0023] Figure 2 A cross-sectional view provided for the present invention;

[0024] Figure 3 The present invention provides Figure 2 A schematic diagram of the structure enlargement in the middle;

[0025] Figure 4 The present invention provides Figure 2 Schematic diagram of the structure of the middle part;

[0026] Figure 5 A schematic diagram of the three-dimensional structure of the mounting frame and the code belt member provided by the present invention;

[0027] Figure 6 A partial structural schematic diagram provided by the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the traveling mechanism provided by the present invention.

[0029] In the figure, 1. mounting frame; 2. bidirectional threaded rod 1; 3. code tape member; 4. through hole slot; 5. reader body; 6. controller; 7. photoelectric sensor; 8. display screen; 9. light source member; 10. box body; 11. conical opening; 12. fixing frame; 13. identification channel; 14. shading channel; 15. bidirectional threaded rod 2; 16. pulley frame; 17. pulley member; 18. pulley 1; 19. double pulleys; 20. transmission belt 1; 21. pulley 2; 22. transmission belt 2; 23. motor. DETAILED DESCRIPTION

[0030] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0031] like Figure 1-Figure 7 As shown, the encoding code strip with a reader structure provided in this embodiment includes two mounting frames 1 for mounting on other equipment, the two mounting frames 1 are connected and fixed by a bidirectional threaded rod 1 2, the traveling track includes a bidirectional threaded rod 2 15 located on both sides of the bidirectional threaded rod 2, and the two bidirectional threaded rods 2 15 are symmetrical, and both bidirectional threaded rods 2 15 are connected to the mounting frame 1, and also includes: a code strip member 3, the code strip member 3 is in the shape of a ruler with a square cross-section and linear extension, a plurality of through hole slots 4 are provided on the code strip member 3, and a distance is left between the plurality of through hole slots 4, and the plurality of through hole slots 4 are linearly equidistantly arranged along the extension direction of the code strip member 3; a traveling track, the traveling track is connected to the mounting frame 1, a traveling mechanism is provided on the traveling track, and a reader body 5 is provided on the traveling mechanism; a driving component, the driving component is installed on the reader body 5, and the driving component is used to drive the traveling mechanism to move on the traveling track; a detection mechanism, the detection mechanism is arranged on the reader body 5, and the detection mechanism is used to detect the position information of the through hole slots 4 on the code strip member 3.

[0032] By setting a plurality of through hole slots 4 on the code band component 3, the light source component 9 can send a light signal through the through hole slots 4, and the input end of the photoelectric sensor 7 on the side of the code band component 3 away from the light source component 9 will receive the light signal, and the interval transmission of the light signal will form an electric pulse signal on the photoelectric sensor 7, and then the output end of the controller 6 receives the electric pulse signal after the photoelectric sensor 7 senses the light signal and forms digital information, and displays the digital information in text form on the display screen 8 on the controller 6, and then the controller 6 will control the start-up operation of the motor 23 with the digital information, and then control the position of the reader body 5. In this process, the start-stop position relationship of the structure after the linear movement can be accurately controlled, and accurate position feedback can be provided to help the system achieve precise motion control and positioning, and help the precision structure achieve accurate position movement.

[0033] Further, such as Figure 1 as well as Figure 3 As shown, the detection mechanism includes a controller 6 and a photoelectric sensor 7 located at a side position on one side of the code band 3. The controller 6 is installed on the outside of the reader body 5. The photoelectric sensor 7 is used to sense the light passing through the through hole groove 4 and form an electric pulse signal. The output end of the photoelectric sensor 7 is connected to the input end of the controller 6. The output end of the controller 6 receives the electric pulse signal after the photoelectric sensor 7 senses the light source and forms digital information. The controller 6 is provided with a display screen 8, and the display screen 8 displays the digital information in text form.

[0034] The detection mechanism also includes a light source component 9, which is arranged on the reader body 5, and the light source component 9 is located at a side position of the code band component 3 away from the photoelectric sensor 7. The output end of the light source component 9 corresponds to the input end of the photoelectric sensor 7 and is on the same vertical plane. The light signal output by the light source component 9 is transmitted to the input end of the photoelectric sensor 7 through the through hole groove 4.

[0035] The above-mentioned photoelectric sensor 7 and light source 9 are both existing technical structures, mainly infrared light emitting photoelectric sensor 7, also known as beam interruption sensor, mainly composed of a transmitter and a receiver, through optical mirror focusing processing, the infrared light beam is projected to a distance, the receiver includes a photoelectric sensor 7, such as a photodiode, a phototransistor, a silicon photocell or a silicon avalanche diode, for receiving the focused light beam. When the light beam is blocked by an object, the light intensity detected by the receiver decreases, and then a signal is sent. The interval transmission of the light signal will form an electrical pulse signal on the photoelectric sensor 7.

[0036] There are several light source components 9 and photoelectric sensors 7, and the positions of the several light source components 9 and the several photoelectric sensors 7 correspond one by one. The output ends of the several photoelectric sensors 7 are connected to the input end of the controller 6. The controller 6 is used to analyze the electrical pulse signals output by the several photoelectric sensors 7 and display them through the display screen 8. When the reader body 5 moves on the travel track, it will drive the light source components 9 and the photoelectric sensors 7 connected thereto to move. When the light signal output by the light source component 9 passes through the through hole groove 4, it will be transmitted to the input end of the photoelectric sensor 7 through the through hole groove 4. When crossing the through hole groove 4, it will be blocked by the distance between the two through hole grooves 4, so that the light signal cannot be transmitted. At this time, after receiving the light signal from the light source component 9, the photoelectric sensor 7 will form an interval of electrical pulse signals.

[0037] Further, such as Figure 1 as well as Figure 3 As shown, a box body 10 with a conical opening 11 on one side is connected to the inside of the reader body 5, and the light source 9 is installed in the box body 10. The conical opening 11 on the box body 10 faces the side of the code belt part 3 and contacts it. The box body 10 is used to reduce the light loss of the light source part 9 and maintain a certain intensity. A fixing frame 12 is connected to the reader body 5, and the fixing frame 12 is located on the side of the code belt part 3 away from the light source part 9. The fixing frame 12 is used to install and fix the photoelectric sensor 7 and prevent the photoelectric sensor 7 from tilting. An identification channel 13 is provided on the reader body 5, and a shading channel 14 is provided at the input end and the output end of the identification channel 13.

[0038] Furthermore, Figure 1 as well as Figure 7 As shown, the travel mechanism includes a pulley frame 16 fixedly connected to the reader body 5, two groups of pulley members 17 connected to the pulley frame 16, each group of pulley members 17 includes two pulley members 17, and the two groups of pulley members 17 are respectively located on two bidirectional threaded rods 15, and the two pulley members 17 on one group of pulley members 17 are respectively fixedly connected with a pulley 18 and a double pulley 19, and the pulley 18 and the double pulley 19 are jointly sleeved with a transmission belt 20, and the two mounting frames 1 are adjusted to appropriate positions by using the bidirectional threaded rod 2, and then the code belt member 3 is installed on the mounting frame 1, and then the reader body 5, the travel track and the travel mechanism are respectively installed on the mounting frame 1, wherein the code belt member 3 is located in the identification channel 13 and the shading channel 14, and the device is installed on a suitable equipment structure by using the mounting frame 1.

[0039] Going further, Figure 1 as well as Figure 7As shown, the driving assembly includes a motor 23, a pulley 21 and a transmission belt 22 installed on the reader body 5. The pulley 21 is connected to a side surface of the reader body 5 close to the pulley 1 18. The transmission belt 22 is sleeved on the pulley 21 and the double pulley 19. The output end of the motor 23 is connected to the pulley 21, and the motor 23 is electrically connected to the controller 6. The output end of the motor 23 drives the pulley 21 to rotate, and drives the double pulley 19 to rotate through the transmission belt 22, and then drives the pulley 18 to rotate through the transmission belt 1 20. At this time, the pulley 17 rotates under the drive of the double pulley 19 and the pulley 18, so that the reader body 5 connected to the travel mechanism moves on the travel track.

[0040] like Figure 1-Figure 7 As shown, the present embodiment provides a system for encoding a code tape with a reader structure, comprising the following steps:

[0041] S1: First, use the bidirectional threaded rod 2 to adjust the two mounting frames 1 to the appropriate position, then install the code tape 3 on the mounting frame 1, then install the reader body 5, the travel track and the travel mechanism on the mounting frame 1 respectively, wherein the code tape 3 is located in the identification channel 13 and the shading channel 14, and the device is installed on a suitable equipment structure using the mounting frame 1;

[0042] S2: Then, the output end of the controller 6 outputs a control signal, and the control signal controls the motor 23 to start running. The output end of the motor 23 drives the pulley 21 to rotate, and drives the double pulley 19 to rotate through the transmission belt 22, and then drives the pulley 18 to rotate through the transmission belt 1 20. At this time, the pulley 17 rotates under the drive of the double pulley 19 and the pulley 1 18, so that the reading head body 5 connected to the traveling mechanism moves on the traveling track;

[0043] S3: When the head body 5 moves on the traveling track, it will drive the light source 9 and the photoelectric sensor 7 connected thereto to move. When the light signal output by the light source 9 passes through the through-hole slot 4, it will be transmitted to the input end of the photoelectric sensor 7 through the through-hole slot 4. When it passes through the through-hole slot 4, it will be blocked by the distance between the two through-hole slots 4, so that the light signal cannot be transmitted. At this time, after receiving the light signal from the light source 9, the photoelectric sensor 7 will form an interval electrical pulse signal;

[0044] S4: Then, the output end of the controller 6 receives the electric pulse signal after the photoelectric sensor 7 senses the light signal and forms digital information, and displays the digital information in text form on the display screen 8 on the controller 6 to facilitate observation by the operator. When the reader body 5 moves to the vicinity of the pre-set position and continues to move, the controller 6 will accurately identify the position information under the action of the photoelectric sensor 7 and the light source 9. When the distance is accurate, a control signal is sent to the motor 23 to stop the motor 23. At this time, the reader body 5 stays at the pre-set position.

[0045] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0046] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0047] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A code tape with a reader structure, comprising two mounting frames (1) for mounting on other equipment, wherein the two mounting frames (1) are connected and fixed by a bidirectional threaded rod (2), characterized in that: Also includes: A code tape member (3), the code tape member (3) is in the shape of a ruler with a square cross section and extending linearly, a plurality of through hole slots (4) are provided on the code tape member (3), and a distance is left between the plurality of through hole slots (4), and the plurality of through hole slots (4) are linearly and equidistantly arranged along the extension direction of the code tape member (3); A travel track, the travel track being connected to the mounting frame (1), the travel track being provided with a travel mechanism, and the travel mechanism being provided with a reader body (5); A driving assembly, the driving assembly is mounted on the reading head body (5), and the driving assembly is used to drive the traveling mechanism to travel on the traveling track; A detection mechanism is provided on the reader body (5), and is used to detect position information of a through hole slot (4) on the code tape member (3).

2. The coding tape with a reader structure according to claim 1, characterized in that: The detection mechanism comprises a controller (6) and a photoelectric sensor (7) located at a side position of one side of the code band member (3); the controller (6) is installed outside the reader body (5); the photoelectric sensor (7) is used to sense the light passing through the through hole groove (4) and form an electric pulse signal; the output end of the photoelectric sensor (7) is connected to the input end of the controller (6); the output end of the controller (6) receives the electric pulse signal of the photoelectric sensor (7) and forms digital information; the controller (6) is provided with a display screen (8), and the display screen (8) displays the digital information in text form.

3. The coding tape with a reader structure according to claim 2, characterized in that: The detection mechanism further comprises a light source component (9), the light source component (9) being arranged on the reader body (5), and the light source component (9) being located at a side position of the code band component (3) away from the photoelectric sensor (7), the output end of the light source component (9) corresponding to the input end of the photoelectric sensor (7) and being located on the same vertical plane, and the light signal output by the light source component (9) is transmitted to the input end of the photoelectric sensor (7) through the through hole groove (4).

4. The coding tape with a reader structure according to claim 3, characterized in that: The reader body (5) is internally connected to a box body (10) having a conical opening (11) on one side, and the light source component (9) is installed inside the box body (10). The conical opening (11) on the box body (10) faces a side surface of the code band component (3) and contacts it. The box body (10) is used to reduce the loss of light from the light source component (9) and maintain a certain intensity.

5. The coding tape with a reader structure according to claim 3, characterized in that: The reader body (5) is connected to a fixing frame (12), and the fixing frame (12) is located at a side position of the code belt component (3) away from the light source component (9). The fixing frame (12) is used to install and fix the photoelectric sensor (7) and prevent the photoelectric sensor (7) from tilting. The reader body (5) is provided with an identification channel (13), and the input end and output end of the identification channel (13) are both provided with a light shielding channel (14).

6. The coding tape with a reader structure according to claim 3, characterized in that: There are a plurality of light source components (9) and photoelectric sensors (7), and the positions of the plurality of light source components (9) and the plurality of photoelectric sensors (7) correspond one to one. The output ends of the plurality of photoelectric sensors (7) are connected to the input end of the controller (6). The controller (6) is used to analyze the electrical pulse signals output by the plurality of photoelectric sensors (7) and display them on a display screen (8).

7. The coding tape with a reader structure according to claim 2, characterized in that: The travel track comprises a second bidirectional threaded rod (15) located on both sides of the first bidirectional threaded rod (2), and the two second bidirectional threaded rods (15) are symmetrical, and both of the second bidirectional threaded rods (15) are connected to the mounting frame (1).

8. The coding tape with a reader structure according to claim 7, characterized in that: The travel mechanism comprises a pulley frame (16) fixedly connected to the reader body (5), and two groups of pulley members (17) connected to the pulley frame (16), each group of the pulley members (17) comprises two pulley members (17), and the two groups of the pulley members (17) are respectively located on the two bidirectional threaded rods (15), and the two pulley members (17) on one group of the pulley members (17) are respectively fixedly connected to a pulley one (18) and a double pulley (19), and the pulley one (18) and the double pulley (19) are jointly provided with a transmission belt one (20).

9. The coding tape with a reader structure according to claim 8, characterized in that: The driving assembly comprises a motor (23) mounted on the reader body (5), a second pulley (21) and a second transmission belt (22), wherein the second pulley (21) is connected to a side surface of the reader body (5) close to the first pulley (18), the second transmission belt (22) is sleeved on the second pulley (21) and the double pulleys (19), the output end of the motor (23) is connected to the second pulley (21), and the motor (23) is electrically connected to the controller (6).

10. A system for encoding a code tape with a reader structure, characterized in that: The steps include: S1: First, use the bidirectional threaded rod (2) to adjust the two mounting frames (1) to a suitable position, then install the code tape member (3) on the mounting frame (1), then install the reader body (5), the travel track and the travel mechanism on the mounting frame (1), wherein the code tape member (3) is located in the identification channel (13) and the shading channel (14), and the device is installed on a suitable equipment structure using the mounting frame (1); S2: Then, the controller (6) outputs a control signal, and the control signal controls the motor (23) to start running. The output end of the motor (23) drives the second pulley (21) to rotate, and drives the double pulley (19) to rotate through the second transmission belt (22), and then drives the first pulley (18) to rotate through the first transmission belt (20). At this time, the pulley (17) rotates under the drive of the double pulley (19) and the first pulley (18), so that the reading head body (5) connected to the travel mechanism moves on the travel track; S3: When the head body (5) moves on the travel track, it will drive the light source (9) and the photoelectric sensor (7) connected thereto to move. When the light signal output by the light source (9) passes through the through hole groove (4), it will be transmitted to the input end of the photoelectric sensor (7) through the through hole groove (4). When crossing the through hole groove (4), it will be blocked by the distance between the two through hole grooves (4), so that the light signal cannot be transmitted. At this time, after receiving the light signal from the light source (9), the photoelectric sensor (7) will form an interval electrical pulse signal; S4: Then, the output end of the controller (6) receives the electric pulse signal after the photoelectric sensor (7) senses the light signal and forms digital information, and displays the digital information in text form on the display screen (8) on the controller (6) to facilitate observation by the operator. When the reader body (5) moves to the vicinity of the preset position and continues to move, the controller (6) will accurately identify the position information under the action of the photoelectric sensor (7) and the light source (9). When the distance is accurate, a control signal is sent to the motor (23) to stop the motor (23). At this time, the reader body (5) stays at the preset position.

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