A precise target seeking system

Abstract

The present invention discloses a precise target-finding system, comprising the following steps: Step S1: placing a target mold in a corresponding designated installation area, wherein at least four positioning targets are provided on the target mold; Step S2: obtaining the fuzzy coordinates of the positioning target in the target mold according to the positioning information of the positioning target in the 3D mold graphics, and the laser emitting device emitting a laser signal to scan the positioning target near the fuzzy coordinates of the positioning target to confirm the clear coordinates of the target; Step S3: after obtaining the clear coordinates of each target, calibrate the positioning information of the positioning target in the 3D mold graphics to obtain a precisely positioned target mold. The present invention provides a precise target-finding system, wherein the target mold is first placed in a designated installation area, a laser emitting device is used to send a laser signal to scan the positioning target, and the positioning target node receives the laser signal and sends a positioning signal to a control host, so as to confirm the clear coordinates of the positioning target.

Description

Technical Field

[0001] The invention relates to the field of target finding systems, and in particular to a precise target finding system. Background Art

[0002] During the production process, many irregular 3D parts need to be marked and guided in different steps during processing to facilitate workers to accurately lay them. Several galvanometers can be used to reflect the contour lines projected by the laser onto the workpiece to complete auxiliary work in the 3D part generation process. However, during the production process, the parts (three-dimensional cavities) are constantly changing their posture and slightly deforming due to vibration, thermal deformation, repeated flipping during the mold closing process, etc. Therefore, it is necessary to accurately locate the position of the 3D parts, and accurately locating the position of the 3D parts requires accurately locating the positioning targets on the 3D parts. Therefore, accurate target finding is extremely important.

[0003] However, in the current existing technology, most positioning targets are reflectors, and the target-seeking process is to scan through a laser transmitter, which is emitted through a mirror and received by a laser receiver to confirm the position of the positioning target. The precise positioning of 3D parts can be confirmed by confirming multiple positioning targets. However, the reflection through the reflector is easily affected by the installation angle, so that the error in the reflection angle causes a deviation in laser reception, resulting in insufficient accuracy in target-seeking. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the present invention provides a precise target finding system.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A precise target seeking system comprises the following steps:

[0007] Step S1: placing a target mold in a corresponding designated installation area, wherein at least four positioning targets are provided on the target mold, and importing a 3D mold graphic corresponding to the target mold into a control host, wherein the 3D mold graphic is provided with positioning information corresponding to the positioning targets one by one;

[0008] Step S2: According to the positioning information of the positioning target in the 3D mold graphic, the fuzzy coordinates of the positioning target in the target mold are obtained, and the laser emitting device emits a laser signal to scan the positioning target near the fuzzy coordinates of the positioning target. After receiving the laser signal, the positioning target feeds back the positioning signal to the control host to confirm the clear coordinates of the target;

[0009] Step S3: After obtaining the clear coordinates of each target, the clear coordinates of the target in the target mold are compared with the positioning information of the positioning target in the 3D mold graphic one by one, and the positioning information of the positioning target in the 3D mold graphic is calibrated to obtain a precisely positioned target mold.

[0010] Furthermore, the laser signal performs a first scan near the fuzzy coordinates of the positioning target in the target mold, and the positioning target receives the laser signal and feeds back a preliminary positioning signal to the control host, stops the first scan, and obtains preliminary clear coordinates;

[0011] The laser emitting device transmits a calibration signal to perform a second scan towards the obtained preliminary clear coordinates. If the positioning target receives the calibration signal and feeds back the positioning signal to the control host, the clear coordinates of the target can be obtained and confirmed. If the control host cannot receive the calibration signal reflected by the positioning target, the first scan is performed again to recalibrate and confirm the preliminary clear coordinates.

[0012] Furthermore, the laser signal performs a first scan near the fuzzy coordinates of the positioning target in the target mold by means of spiral scanning, wherein the spiral scanning starts with the fuzzy coordinates of the positioning target in the target mold as the center, and the spiral pitch of the spiral scanning gradually increases until the positioning target receives the laser signal and feeds back a preliminary positioning signal to the control host to stop the first scan.

[0013] Furthermore, the calibration signal is scanned a second time to the preliminary clear coordinates of the positioning target in the target mold by linear scanning. When the positioning target receives the calibration signal and feeds back the positioning signal to the control host, the clear coordinates of the target can be obtained and confirmed.

[0014] Furthermore, the precise targeting system also includes a gateway, which is connected to the control host in a two-way communication manner through a serial port, Ethernet or WiFi. The positioning target is a laser recognition device based on the LORAWAN protocol, and the positioning target is connected to the gateway in a two-way communication manner through LORA.

[0015] The invention discloses a precise target-finding system, which has a beneficial effect compared with the prior art in that the invention first places the target mold in a designated installation area. Due to the difference in installation, the relative position relationship between the laser emitting device and the target mold is easily different from the setting. The laser emitting device sends a laser signal to scan and locate the target. The target positioning node receives the laser signal and sends a positioning signal to the control host. The clear coordinates of the positioning target can be confirmed, and the relative position relationship between the laser emitting device and the target mold can be obtained and corrected, so as to carry out the next step of processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a flow chart of the precise target-seeking system provided by the present invention. DETAILED DESCRIPTION

[0017] The present invention discloses a precise target finding system. The specific implementation manner of the present invention is further described below in conjunction with preferred embodiments.

[0018] See attached figure Figure 1 , Figure 1 It is a flow chart of the precise target-seeking system provided by the present invention.

[0019] Preferred embodiments.

[0020] This embodiment provides a precise target finding system, comprising the following steps:

[0021] Step S1: placing a target mold in a corresponding designated installation area, wherein at least four positioning targets are provided on the target mold, and importing a 3D mold graphic corresponding to the target mold into a control host, wherein the 3D mold graphic is provided with positioning information corresponding to the positioning targets one by one;

[0022] Step S2: According to the positioning information of the positioning target in the 3D mold graphic, the fuzzy coordinates of the positioning target in the target mold are obtained, and the laser emitting device emits a laser signal to scan the positioning target near the fuzzy coordinates of the positioning target. After receiving the laser signal, the positioning target feeds back the positioning signal to the control host to confirm the clear coordinates of the target;

[0023] Step S3: After obtaining the clear coordinates of each target, the clear coordinates of the target in the target mold are compared with the positioning information of the positioning target in the 3D mold graphic one by one, and the positioning information of the positioning target in the 3D mold graphic is calibrated to obtain a precisely positioned target mold.

[0024] Furthermore, the laser signal performs a first scan near the fuzzy coordinates of the positioning target in the target mold, and the positioning target receives the laser signal and feeds back a preliminary positioning signal to the control host, stops the first scan, and obtains preliminary clear coordinates;

[0025] The laser emitting device transmits a calibration signal to perform a second scan towards the obtained preliminary clear coordinates. If the positioning target receives the calibration signal and feeds back the positioning signal to the control host, the clear coordinates of the target can be obtained and confirmed. If the control host cannot receive the calibration signal reflected by the positioning target, the first scan is performed again to recalibrate and confirm the preliminary clear coordinates.

[0026] The laser emitting device first emits a laser signal to the vicinity of the fuzzy coordinates of the positioning target for the first scan. When the positioning target is scanned, the position of the positioning target is preliminarily confirmed. The positioning target receives the laser signal and feeds back the preliminary positioning signal to the control host, and the preliminary clear coordinates of the positioning target are obtained; the laser emitting device then emits a calibration signal to the preliminary clear coordinates of the positioning target and performs a second scan. When the positioning target is scanned, the position of the positioning target can be directly confirmed. The positioning target receives the laser signal and feeds back the positioning signal to the control host, and the clear coordinates of the positioning target are obtained, that is, the control host obtains the accurate position information of the target.

[0027] Furthermore, the laser signal performs a first scan near the fuzzy coordinates of the positioning target in the target mold by means of spiral scanning, wherein the spiral scanning starts with the fuzzy coordinates of the positioning target in the target mold as the center, and the spiral pitch of the spiral scanning gradually increases until the positioning target receives the laser signal and feeds back a preliminary positioning signal to the control host to stop the first scan.

[0028] The laser emitting device emits a laser signal to perform the first scan near the fuzzy coordinates of the positioning target in the target mold. The laser signal gradually expands the scanning area through spiral scanning, which can accurately find the positioning target and confirm the preliminary clear coordinates of the positioning target.

[0029] Furthermore, the calibration signal is scanned a second time to the preliminary clear coordinates of the positioning target in the target mold by linear scanning. When the positioning target receives the calibration signal and feeds back the positioning signal to the control host, the clear coordinates of the target can be obtained and confirmed.

[0030] The laser emitting device transmits a calibration signal to perform a second scan towards the obtained preliminary clear coordinates. When the positioning target can receive the calibration signal and feed back the positioning signal to the control host, the preliminary clear coordinates can be confirmed as clear coordinates, that is, the position of the positioning target is confirmed.

[0031] Furthermore, the precise targeting system also includes a gateway, which is connected to the control host in a two-way communication manner through a serial port, Ethernet or WiFi. The positioning target is a laser recognition device based on the LORAWAN protocol, and the positioning target is connected to the gateway in a two-way communication manner through LORA.

[0032] The specific product model of the laser recognition device in the positioning target is JD-EI-685050. It is more sensitive to laser sensing and can adapt to laser irradiation recognition at more angles. It can ensure the accuracy of laser signal scanning. At the same time, the wireless transmission architecture design of the LORAWAN protocol facilitates the emission of calibration signals, thereby facilitating the calibration of the control host.

[0033] It is worth mentioning that the technical features such as the laser emitting device, gateway and LORAWAN protocol involved in the patent application of this invention should be regarded as the prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected according to the conventional methods in the field, and should not be regarded as the inventive point of the patent of this invention. The patent of this invention will not be further elaborated.

[0034] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A precise target finding system for accurately locating irregular target molds, characterized in that: The following steps are involved: Step S1: placing a target mold in a corresponding designated installation area, wherein at least four positioning targets are provided on the target mold, and importing a 3D mold graphic corresponding to the target mold into a control host, wherein the 3D mold graphic is provided with positioning information corresponding to the positioning targets one by one; Step S2: According to the positioning information of the positioning target in the 3D mold graphic, the fuzzy coordinates of the positioning target in the target mold are obtained, and the laser emitting device emits a laser signal to scan the positioning target near the fuzzy coordinates of the positioning target. After receiving the laser signal, the positioning target feeds back the positioning signal to the control host to confirm the clear coordinates of the target; Step S3: After obtaining the clear coordinates of each target, the clear coordinates of the target in the target mold are compared with the positioning information of the positioning target in the 3D mold graphic one by one, and the positioning information of the positioning target in the 3D mold graphic is calibrated to obtain a precisely positioned target mold; The laser signal performs a first scan near the fuzzy coordinates of the positioning target in the target mold, and the positioning target receives the laser signal and feeds back a preliminary positioning signal to the control host, stops the first scan, and obtains preliminary clear coordinates; The laser emitting device transmits a calibration signal to perform a second scan at the obtained preliminary clear coordinates. If the positioning target receives the calibration signal and feeds back the positioning signal to the control host, the clear coordinates of the target can be obtained and confirmed. If the control host cannot receive the calibration signal reflected by the positioning target, the first scan is performed again to recalibrate and confirm the preliminary clear coordinates. The laser signal performs a first scan near the fuzzy coordinates of the positioning target in the target mold in a spiral scanning manner, wherein the spiral scanning starts with the fuzzy coordinates of the positioning target in the target mold as the center, and the spiral pitch of the spiral scanning gradually increases until the positioning target receives the laser signal and feeds back a preliminary positioning signal to the control host to stop the first scan; The calibration signal is scanned a second time to the preliminary clear coordinates of the positioning target in the target mold by linear scanning. When the positioning target receives the calibration signal and feeds back the positioning signal to the control host, the clear coordinates of the target can be obtained and confirmed.

2. The precise targeting system according to claim 1, characterized in that: The precise target-seeking system also includes a gateway, which is connected to the control host via a serial port, Ethernet or WiFi in a two-way communication manner. The positioning target is a laser recognition device based on the LORAWAN protocol, and the positioning target is connected to the gateway in a two-way communication manner via LORA.

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