阅读说明：本技术 一种利用激光对射测量管材长度的方法及装置 (method and device for measuring length of pipe by utilizing laser correlation ) 是由 罗盛华 吴仁杰 罗锡阳 于 2019-08-20 设计创作，主要内容包括：本发明公开了一种利用激光对射测量管材长度的方法,通过在检测到管材测量平台的传送槽位的中部有管材时,升起设置在传送槽位前端内部的第一激光测距仪,同时停止传送槽位上传送带的转动,当第一激光测距仪的发光口垂直对准管材前端横切面的中心时,生成第一信号,并开始测量第一激光测距仪到管材前端横切面的第一距离,根据第一信号触发设置在传送槽位末端的第二激光测距仪开始测距,得到激光测距仪到管材后端横切面的第二距离,最后根据第一激光测距仪到第二激光测距仪的固定距离、第一距离以及第二距离,得到管材的长度,采用本发明提供的实施例,能够更好地节省人力成本、减少管材测量时造成的误差。(The invention discloses a method for measuring the length of a pipe by utilizing laser correlation, which comprises the steps of lifting a first laser distance meter arranged in the front end of a conveying groove of a pipe measuring platform when the pipe is detected to be arranged in the middle of the conveying groove, stopping the rotation of a conveying belt on the conveying groove, generating a first signal when a light-emitting port of the first laser distance meter is vertically aligned with the center of the cross section of the front end of the pipe, starting to measure the first distance from the first laser distance meter to the cross section of the front end of the pipe, triggering a second laser distance meter arranged at the tail end of the conveying groove to start distance measurement according to the first signal to obtain the second distance from the laser distance meter to the cross section of the rear end of the pipe, and finally obtaining the length of the pipe according to the fixed distance, the first distance and the second distance from the first laser distance meter to the second laser distance meter Reduce the error that causes when the tubular product is measured.)

1. A method for measuring the length of a pipe by utilizing laser correlation is characterized by comprising the following steps:

When a pipe is detected to be arranged in the middle of a conveying slot position of the pipe measuring platform, a first laser distance meter arranged in the front end of the conveying slot position is lifted, and meanwhile, the conveying belt on the conveying slot position stops rotating;

when a light emitting port of the first laser range finder is vertically aligned with the center of the cross section of the front end of the pipe, generating a first signal, and starting to measure a first distance from the first laser range finder to the cross section of the front end of the pipe;

triggering a second laser range finder arranged at the tail end of the conveying slot position to start ranging according to the first signal to obtain a second distance from the laser range finder to the transverse section of the rear end of the pipe;

and obtaining the length of the pipe according to the fixed distance from the first laser range finder to the second laser range finder, the first distance and the second distance.

2. The method for measuring the length of the pipe by utilizing the laser correlation according to claim 1, wherein when the pipe is detected to be in the middle of the conveying slot of the pipe measuring platform, the first laser distance meter arranged inside the front end of the conveying slot is lifted, and the rotation of the conveying belt in the conveying slot is stopped, specifically:

Horizontally butting the front end of a conveying groove of a pipe measuring platform with a conveying belt at the tail end of a production line so as to horizontally convey a pipe from the conveying belt at the tail end of the production line to the conveying belt of the pipe measuring platform;

when the pipe is conveyed to the middle of the conveying slot of the pipe measuring platform, a sensor arranged in the middle of the conveying slot is triggered, a control signal is generated to lift a first laser range finder arranged in the front end of the conveying slot, and meanwhile, the conveying belt on the conveying slot is stopped to rotate.

3. the method for measuring the length of the pipe by using laser correlation according to claim 2, wherein the length of the pipe is obtained according to the fixed distance from the first laser range finder to the second laser range finder, the first distance and the second distance, and specifically comprises:

when no pipe exists on the pipe measuring platform, the first laser range finder is lifted, and any laser range finder is started to obtain the fixed distance from the first laser range finder to the second laser range finder;

and subtracting the first distance and the second distance from the fixed distance to obtain the length of the pipe.

4. An apparatus for measuring the length of a pipe by laser correlation, comprising: the device comprises a detection module, a first distance measurement module, a second distance measurement module and a pipe length generation module;

the detection module is used for lifting a first laser range finder arranged in the front end of the conveying slot position and simultaneously stopping the rotation of the conveying belt on the conveying slot position when the pipe is detected to be arranged in the middle of the conveying slot position of the pipe measuring platform;

The first distance measuring module is used for generating a first signal when a light emitting port of the first laser distance measuring instrument is vertically aligned with the center of the cross section of the front end of the pipe, and starting to measure a first distance from the first laser distance measuring instrument to the cross section of the front end of the pipe;

the second distance measuring module is used for triggering a second laser distance measuring instrument arranged at the tail end of the conveying slot position to start distance measurement according to the first signal so as to obtain a second distance from the laser distance measuring instrument to the transverse section of the rear end of the pipe;

The pipe length generating module is used for obtaining the length of the pipe according to the fixed distance from the first laser range finder to the second laser range finder, the first distance and the second distance.

5. the apparatus for measuring the length of a pipe by laser correlation according to claim 4, wherein the detection module comprises a docking unit and a triggering unit;

the butt joint unit is used for horizontally butt joint the front end of a conveying groove of a pipe measuring platform with a conveying belt at the tail end of a production line so as to horizontally convey the pipe from the conveying belt at the tail end of the production line to the conveying belt of the pipe measuring platform;

the triggering unit is used for triggering a sensor arranged in the middle of the conveying slot position when the pipe is conveyed to the middle of the conveying slot position of the pipe measuring platform, generating a control signal to lift a first laser range finder arranged in the front end of the conveying slot position, and simultaneously stopping the rotation of the conveying belt on the conveying slot position.

6. the apparatus for measuring a length of a pipe using laser correlation according to claim 5, wherein the pipe length generating module includes a fixed length measuring unit and a pipe length measuring unit;

The fixed-length measuring unit is used for lifting the first laser range finder and starting any laser range finder to obtain a fixed distance from the first laser range finder to the second laser range finder when no pipe exists on the pipe measuring platform;

The pipe length measuring unit is used for subtracting the first distance and the second distance from the fixed distance to obtain the length of the pipe.

Technical Field

the invention relates to the technical field of measurement, in particular to a method and a device for measuring the length of a pipe by utilizing laser correlation.

background

at present, a production factory mainly measures the length of a pipe by manually using a steel tape, a large amount of manpower and material resources are consumed, certain errors can also occur in the result of manual measurement, and larger errors can be caused to later data processing and registration if the error occurs in the measurement result.

Therefore, a method for measuring the length of the pipe with lower cost and higher precision is urgently needed in a factory at present, and working errors are avoided.

disclosure of Invention

The embodiment of the invention aims to provide a method for measuring the length of a pipe by utilizing laser correlation, which can better save the labor cost and reduce the error caused by pipe measurement.

In order to achieve the above object, an embodiment of the present invention provides a method for measuring a length of a pipe by using laser correlation, including the following steps:

When a pipe is detected to be arranged in the middle of a conveying slot position of the pipe measuring platform, a first laser distance meter arranged in the front end of the conveying slot position is lifted, and meanwhile, the conveying belt on the conveying slot position stops rotating;

When a light emitting port of the first laser range finder is vertically aligned with the center of the cross section of the front end of the pipe, generating a first signal, and starting to measure a first distance from the first laser range finder to the cross section of the front end of the pipe;

Triggering a second laser range finder arranged at the tail end of the conveying slot position to start ranging according to the first signal to obtain a second distance from the laser range finder to the transverse section of the rear end of the pipe;

and obtaining the length of the pipe according to the fixed distance from the first laser range finder to the second laser range finder, the first distance and the second distance.

Further, when detecting that there is tubular product in the middle part of tubular product measuring platform's conveying trench, rise the setting and be in conveying trench front end inside first laser range finder stops simultaneously conveying belt's rotation on the conveying trench specifically does:

Horizontally butting the front end of a conveying groove of a pipe measuring platform with a conveying belt at the tail end of a production line so as to horizontally convey a pipe from the conveying belt at the tail end of the production line to the conveying belt of the pipe measuring platform;

when the pipe is conveyed to the middle of the conveying slot of the pipe measuring platform, a sensor arranged in the middle of the conveying slot is triggered, a control signal is generated to lift a first laser range finder arranged in the front end of the conveying slot, and meanwhile, the conveying belt on the conveying slot is stopped to rotate.

further, the length of the pipe is obtained according to the fixed distance from the first laser range finder to the second laser range finder, the first distance and the second distance, and specifically is that:

when no pipe exists on the pipe measuring platform, the first laser range finder is lifted, and any laser range finder is started to obtain the fixed distance from the first laser range finder to the second laser range finder;

and subtracting the first distance and the second distance from the fixed distance to obtain the length of the pipe.

as a preferred embodiment of the present invention, there is also provided an apparatus for measuring a length of a pipe by laser correlation, including: the device comprises a detection module, a first distance measurement module, a second distance measurement module and a pipe length generation module;

the detection module is used for lifting a first laser range finder arranged in the front end of the conveying slot position and simultaneously stopping the rotation of the conveying belt on the conveying slot position when the pipe is detected to be arranged in the middle of the conveying slot position of the pipe measuring platform;

The first distance measuring module is used for generating a first signal when a light emitting port of the first laser distance measuring instrument is vertically aligned with the center of the cross section of the front end of the pipe, and starting to measure a first distance from the first laser distance measuring instrument to the cross section of the front end of the pipe;

The second distance measuring module is used for triggering a second laser distance measuring instrument arranged at the tail end of the conveying slot position to start distance measurement according to the first signal so as to obtain a second distance from the laser distance measuring instrument to the transverse section of the rear end of the pipe;

The pipe length generating module is used for obtaining the length of the pipe according to the fixed distance from the first laser range finder to the second laser range finder, the first distance and the second distance.

Further, the detection module comprises a docking unit and a triggering unit;

The butt joint unit is used for horizontally butt joint the front end of a conveying groove of a pipe measuring platform with a conveying belt at the tail end of a production line so as to horizontally convey the pipe from the conveying belt at the tail end of the production line to the conveying belt of the pipe measuring platform;

The triggering unit is used for triggering a sensor arranged in the middle of the conveying slot position when the pipe is conveyed to the middle of the conveying slot position of the pipe measuring platform, generating a control signal to lift a first laser range finder arranged in the front end of the conveying slot position, and simultaneously stopping the rotation of the conveying belt on the conveying slot position.

further, the pipe length generating module comprises a fixed length measuring unit and a pipe length measuring unit;

The fixed-length measuring unit is used for lifting the first laser range finder and starting any laser range finder to obtain a fixed distance from the first laser range finder to the second laser range finder when no pipe exists on the pipe measuring platform;

The pipe length measuring unit is used for subtracting the first distance and the second distance from the fixed distance to obtain the length of the pipe.

The invention provides a method for measuring the length of a pipe by utilizing laser correlation, which comprises the steps of lifting a first laser distance meter arranged in the front end of a conveying groove of a pipe measuring platform when the pipe is detected to be arranged in the middle of the conveying groove, stopping the rotation of a conveying belt on the conveying groove, generating a first signal when a light-emitting port of the first laser distance meter is vertically aligned with the center of the cross section of the front end of the pipe, starting to measure the first distance from the first laser distance meter to the cross section of the front end of the pipe, triggering a second laser distance meter arranged at the tail end of the conveying groove to start distance measurement according to the first signal to obtain the second distance from the laser distance meter to the cross section of the rear end of the pipe, and finally obtaining the length of the pipe according to the fixed distance, the first distance and the second distance from the first laser distance meter to the second laser distance meter Reduce the error that causes when the tubular product is measured.

drawings

FIG. 1 is a schematic flow chart of one embodiment of a method for measuring the length of a pipe by laser correlation according to the present invention;

FIG. 2 is a schematic diagram of the operation of one embodiment of the method for measuring the length of a pipe by laser correlation according to the present invention;

Fig. 3 is a schematic structural diagram of an embodiment of the device for measuring the length of the pipe by using laser correlation provided by the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

referring to fig. 1, fig. 1 is a schematic flow chart of an embodiment of a method for measuring a length of a pipe by using laser correlation according to the present invention. As shown in fig. 1, the authentication method includes steps S1 to S4, which are as follows:

and S1, when a pipe is detected in the middle of the conveying slot of the pipe measuring platform, lifting a first laser range finder arranged in the front end of the conveying slot, and simultaneously stopping the rotation of the conveying belt in the conveying slot.

In this embodiment, step S1 specifically includes: horizontally butting the front end of a conveying groove of a pipe measuring platform with a conveying belt at the tail end of a production line so as to horizontally convey a pipe from the conveying belt at the tail end of the production line to the conveying belt of the pipe measuring platform; when the pipe is conveyed to the middle of the conveying slot of the pipe measuring platform, a sensor arranged in the middle of the conveying slot is triggered, a control signal is generated to lift a first laser range finder arranged in the front end of the conveying slot, and meanwhile, the conveying belt on the conveying slot is stopped to rotate.

It should be noted that the sensor can sense whether a pipe exists in the conveying slot position, so that the machine starts to measure automatically, and a large amount of human resources are saved.

S2, when the light emitting port of the first laser range finder is vertically aligned with the center of the cross section of the front end of the pipe, a first signal is generated, and the first distance from the first laser range finder to the cross section of the front end of the pipe is measured.

and S3, triggering a second laser distance meter arranged at the tail end of the conveying slot position to start distance measurement according to the first signal, and obtaining a second distance from the laser distance meter to the transverse section of the rear end of the pipe.

and S4, obtaining the length of the pipe according to the fixed distance from the first laser range finder to the second laser range finder, the first distance and the second distance.

in this embodiment, step S4 specifically includes: when no pipe exists on the pipe measuring platform, the first laser range finder is lifted, and any laser range finder is started to obtain the fixed distance from the first laser range finder to the second laser range finder; and subtracting the first distance and the second distance from the fixed distance to obtain the length of the pipe.

in order to better illustrate the working principle of the method of the invention, the following steps are the flow steps of the method for measuring the length of the pipe by utilizing laser correlation according to the invention: the pipe length measuring platform is installed at the tail end of the production line, as shown in figure 2, the laser distance measuring instruments are installed at the front end and the tail end respectively, when a pipe continuously advances towards the tail end of the platform and reaches the middle of the measuring platform, the laser distance measuring instrument at the front end can stretch out and trigger a measuring signal, according to the fixed distance L between the two laser distance measuring instruments, the distance L1 from the laser distance measuring instrument at the rear end to the cross section of the pipe is equal to the distance L3 from the laser distance measuring instrument at the front end to the cross section of the pipe, and the pipe length L2 can be obtained through L-L1-L3.

The method for measuring the length of the pipe by utilizing laser correlation provided by the invention comprises the steps of lifting a first laser distance meter arranged in the front end of a conveying groove of a pipe measuring platform when the pipe is detected to be arranged in the middle of the conveying groove, stopping the rotation of a conveying belt on the conveying groove, generating a first signal when a light-emitting port of the first laser distance meter is vertically aligned with the center of the cross section of the front end of the pipe, starting to measure the first distance from the first laser distance meter to the cross section of the front end of the pipe, triggering a second laser distance meter arranged at the tail end of the conveying groove to start distance measurement according to the first signal to obtain the second distance from the laser distance meter to the cross section of the rear end of the pipe, and finally obtaining the length of the pipe according to the fixed distance, the first distance and the second distance from the first laser distance meter to the second laser distance meter Reduce the error that causes when the tubular product is measured.

referring to fig. 2, as a preferred embodiment of the present invention, the present invention further provides an apparatus for measuring a length of a pipe by using laser correlation, including: the device comprises a detection module, a first distance measurement module, a second distance measurement module and a pipe length generation module;

The detection module is used for lifting a first laser range finder arranged in the front end of the conveying slot position and simultaneously stopping the rotation of the conveying belt on the conveying slot position when the pipe is detected to be arranged in the middle of the conveying slot position of the pipe measuring platform; the first distance measuring module is used for generating a first signal when a light emitting port of the first laser distance measuring instrument is vertically aligned with the center of the cross section of the front end of the pipe, and starting to measure a first distance from the first laser distance measuring instrument to the cross section of the front end of the pipe; the second distance measuring module is used for triggering a second laser distance measuring instrument arranged at the tail end of the conveying slot position to start distance measurement according to the first signal so as to obtain a second distance from the laser distance measuring instrument to the transverse section of the rear end of the pipe; the pipe length generating module is used for obtaining the length of the pipe according to the fixed distance from the first laser range finder to the second laser range finder, the first distance and the second distance.

in this embodiment, the detection module includes a docking unit and a triggering unit;

The butt joint unit is used for horizontally butt joint the front end of a conveying groove of a pipe measuring platform with a conveying belt at the tail end of a production line so as to horizontally convey the pipe from the conveying belt at the tail end of the production line to the conveying belt of the pipe measuring platform; the triggering unit is used for triggering a sensor arranged in the middle of the conveying slot position when the pipe is conveyed to the middle of the conveying slot position of the pipe measuring platform, generating a control signal to lift a first laser range finder arranged in the front end of the conveying slot position, and simultaneously stopping the rotation of the conveying belt on the conveying slot position.

Preferably, the pipe length generating module comprises a fixed length measuring unit and a pipe length measuring unit;

The fixed-length measuring unit is used for lifting the first laser range finder and starting any laser range finder to obtain a fixed distance from the first laser range finder to the second laser range finder when no pipe exists on the pipe measuring platform; the pipe length measuring unit is used for subtracting the first distance and the second distance from the fixed distance to obtain the length of the pipe.

In summary, according to the device for measuring the length of the pipe by laser correlation provided by the present invention, when the detection module detects that the pipe is located in the middle of the conveying slot of the pipe measuring platform, the first laser distance meter arranged in the front end of the conveying slot is lifted, the rotation of the conveyor belt in the conveying slot is stopped, when the light emitting port of the first laser distance meter is vertically aligned with the center of the cross section of the front end of the pipe, the first distance measuring module generates a first signal, starts to measure the first distance from the first laser distance meter to the cross section of the front end of the pipe, the second distance measuring module triggers the second laser distance meter arranged at the tail end of the conveying slot to start measuring the distance according to the first signal, so as to obtain the second distance from the laser distance meter to the cross section of the rear end of the pipe, and finally, the pipe length generating module generates the first distance according to the fixed distance from the first laser distance meter to the second laser distance meter, The length of the pipe is obtained through the first distance and the second distance, and by adopting the embodiment provided by the invention, the labor cost can be better saved, and the error caused by pipe measurement can be reduced.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.