CN219608800U - Plate belt crescent moon detection system - Google Patents
Plate belt crescent moon detection system Download PDFInfo
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- CN219608800U CN219608800U CN202222666445.6U CN202222666445U CN219608800U CN 219608800 U CN219608800 U CN 219608800U CN 202222666445 U CN202222666445 U CN 202222666445U CN 219608800 U CN219608800 U CN 219608800U
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Abstract
The utility model provides a plate crescent detection system, which comprises: the first light source device and the second light source device are symmetrically arranged at two sides of the plate belt to be detected below the plate belt to be detected, and the inside of the first light source device and the second light source device respectively comprise detection light sources which emit light towards the edge position direction of one side of the plate belt to be detected; the first CCD sensor and the second CCD sensor are symmetrically arranged on two sides of the plate belt to be detected above the plate belt to be detected, the first CCD sensor is matched with the first light source device, the second CCD sensor is matched with the second light source device, and the edge positions of the plate belt on the corresponding sides are detected; the signal processing module is used for processing detection signals of the first CCD sensor and the second CCD sensor and is respectively connected with the first CCD sensor and the second CCD sensor; and the display screen is used for displaying detection data and is connected with the signal processing module to realize accurate detection of the width of the plate strip to be detected and the crescent notch.
Description
Technical Field
The utility model relates to the technical field of detection, in particular to a plate belt crescent detection system based on a CCD linear array.
Background
In the metal plate and strip production industry, plate and strips of different rolls run on a production line, welding treatment is needed at the connection position between different plate and strip rolling, thickness change can be generated at the welding position, and the thickness change can have a great influence on certain process sections of the subsequent flow of the production line. For example, a thickened sheet metal strip connection may impact the two rolls as it passes through the roll-holding gap, causing wear and degradation.
In order to solve the problem, a via hole is drilled at the joint of the plate and the strip, a sensor is correspondingly arranged at the joint, and when the sensor detects the arrival of the via hole in the running process of the plate and the strip, a detection signal is sent to a production line controller, and the controller controls the double sticks to be opened according to the detection signal so as to avoid damaging the double sticks. Although this approach solves the problem to some extent for thicker sheet strips, it is easy for the sheet strips to be broken under the tension of the production line, causing unnecessary losses, for sheet strips of very thin thickness.
In order to avoid the plate strip from being broken, the industry solves the problem by arranging crescent-shaped notches which are as long as tens of centimeters on two sides of the metal plate strip. And in the running process of the plate belt, the sensor is used for detecting the crescent notch to pre-warn whether the plate belt deforms or not. Therefore, a high-precision crescent detection sensor is a requirement.
Disclosure of Invention
In order to solve the problems, the utility model provides a plate belt crescent detection system which can accurately detect whether the plate belt is deformed.
The technical scheme provided by the utility model is as follows:
the utility model provides a plate belt crescent moon detecting system, wait to detect the plate belt and transversely move on the guide roll, just treat that the both sides symmetry of detection plate belt has seted up crescent notch, plate belt crescent moon detecting system includes:
the first light source device and the second light source device are symmetrically arranged at two sides of the plate belt to be detected below the plate belt to be detected, and the inside of the first light source device and the second light source device respectively comprise detection light sources which emit light towards the edge position direction of one side of the plate belt to be detected;
the first CCD sensor and the second CCD sensor are symmetrically arranged on two sides of the plate belt to be detected above the plate belt to be detected, the first CCD sensor is matched with the first light source device, the second CCD sensor is matched with the second light source device, and the edge positions of the plate belt on the corresponding sides are detected;
the signal processing module is used for processing detection signals of the first CCD sensor and the second CCD sensor, and is respectively connected with the first CCD sensor and the second CCD sensor; a kind of electronic device with high-pressure air-conditioning system
And the display screen is used for displaying the detection data and is connected with the signal processing module.
According to the plate belt crescent detection system provided by the utility model, the detection light sources and the linear array CCD sensors are symmetrically arranged below and above the plate belt to be detected respectively, so that the real-time detection of the edge position of the plate belt to be detected is realized, and the accurate detection of the width of the plate belt to be detected and crescent notches is realized. In addition, an alarm is configured in the system, and when the narrowing of the width of the plate band is detected, the controller gives an alarm to protect production.
Drawings
The above features, technical features, advantages and implementation thereof will be further described in the following detailed description of preferred embodiments with reference to the accompanying drawings in a clearly understandable manner.
FIG. 1 is a schematic diagram of a CCD linear array-based detection system for a plate belt crescent detection system;
FIG. 2 is a schematic diagram of a CCD sensor according to the present utility model;
FIG. 3 is a schematic view of a light source device according to the present utility model;
reference numerals:
the device comprises a first light source device, a 11-detection light source, a 12-light intensity detection chip, a 13-CPU processor, a 14-LED driving chip, a 14-second light source device, a 20-board to be detected, a 30-first CCD sensor, a 31-linear array CCD chip, a 32-AD signal sampling chip, a 33-FPGA chip, a 34-communication interface, a 35-second CCD sensor, a 40-signal processing module and a 50-display screen.
Detailed Description
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will explain the specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
The plate belt crescent detection system of the utility model, as shown in figure 1, comprises: the first light source device 10 and the second light source device 14 are symmetrically arranged at two sides of the plate belt 20 to be detected below the plate belt 20 to be detected, and each comprises a detection light source inside, and emit light towards the edge position direction of one side of the plate belt 20 to be detected; the first CCD sensor 30 and the second CCD sensor 35 are symmetrically arranged on two sides of the plate belt 20 to be detected above the plate belt 20 to be detected, the first CCD sensor 30 is matched with the first light source device 10, the second CCD sensor 35 is matched with the second light source device 14, and the edge positions of the plate belt on the corresponding sides are detected; a signal processing module 40 for processing detection signals of the first and second CCD sensors 30 and 35, the signal processing module 40 being connected to the first and second CCD sensors 30 and 35, respectively; and a display screen 50 for displaying the detection data, which is connected to the signal processing module 40.
In this embodiment, crescent notches are symmetrically formed on both sides of the plate belt 20 to be detected, and the system is powered by a standard 24V power supply. The plate belt 20 to be detected continuously runs on the guide roller in the detection process, and a plate belt crescent detection system consisting of two sets of light source devices and CCD sensors is configured for continuously monitoring the running plate belt according to detection purposes such as the width of the plate belt and the like, and the purpose is achieved according to the monitoring result.
The first light source device 10 is for providing a light source for the first CCD sensor 30 and the second light source device 14 is for providing a light source for the second CCD sensor 35. The detection light sources in the two light source devices are symmetrically fixed below the plate belt 20 to be detected (in order to avoid the light source shielding by the guide rollers, the detection light sources are arranged in the area between the guide rollers) and emit light towards the plate belt 20 to be detected. The linear array CCD chips in the two CCD sensors detect the plate strip 20 to be detected in real time based on the light source device, and then the detection purpose is realized according to the detection result. The fixing manner of the two light source devices and the CCD sensor is not particularly limited, and the corresponding bracket may be selected according to actual conditions.
The first CCD sensor 30 and the second CCD sensor 35 collect the edge position signals of the plate and the band, and the signals are transmitted to the signal processing module 40 through 0-10V signals or CAN or RS 485. After the signal processing module 40 receives the signal, it processes the signal to obtain the actual width of the board 20 to be detected, and sends the actual width to the display screen 50 for display. Meanwhile, the signal processing module 40 continuously detects the deviation between the actual plate width and the set plate width according to the data of the crescent notch set in the current display screen 50, and when the actual plate width is judged to be larger than the set crescent notch, the detected crescent notch number is displayed on the display screen 50. Meanwhile, the display screen 50 records the data of the board band for a long time, and stores the data in the USB flash disk for reading or configures parameters through the display screen 50. In addition, the signal processing module 40 also transmits the board width data to the production line PLC host through PROFINET communication to cooperate with the whole production line. The selection of the signal processing module may be selected according to practical applications, for example, in an example, the signal processing module with the model number SMART200 is selected.
As shown in fig. 2, the first CCD sensor 30 and the second CCD sensor 35 each include: the linear array CCD chip 31 detects towards the direction of the plate belt 20 to be detected; the AD signal sampling chip 32 is used for sampling and converting the analog detection signal of the linear array CCD chip into a digital detection signal, and the AD signal sampling chip is connected with the linear array CCD chip; the FPGA chip 33 is used for respectively driving the linear array CCD chip and the AD signal sampling chip and processing the digital detection signals to generate detection results, and the FPGA chip is respectively connected with the linear array CCD chip and the AD signal sampling chip; and a communication interface 34 for realizing communication with external equipment, which is connected with the FPGA chip.
In order to ensure that the linear array CCD chip 31 in the two CCD sensors can measure a stable and linear plate and strip edge position signal, the stability of the corresponding detection light source needs to be ensured. As shown in fig. 3, the two light source devices include, in addition to the detection light source 11: a light intensity detection chip 12 for detecting the light intensity emitted from the detection light source 11; a CPU processor 13 for processing the light intensity signal detected by the light intensity detection chip 12 to generate a light source control signal, wherein the CPU processor 13 is connected with the light intensity detection chip 12; and an LED driving chip 14 for driving the detection light source 11 to emit light according to the light source control signal generated by the CPU processor 13, wherein the LED driving chip 14 is respectively connected with the CPU processor 13 and the detection light source 11.
In the working process of the two CCD sensors, the light intensity detection chip 12 detects the luminous intensity of the detection light source 11 according to a certain frequency, the CPU processor 13 compares the luminous intensity signal with the preset light intensity after receiving the light intensity signal, if the difference value between the received light intensity and the preset light intensity exceeds the preset range, a light source control signal is generated and sent to the LED driving chip 14, and the LED driving chip 14 drives the detection light source 11 to emit light in a PWM mode, so that the stable detection light source 11 is obtained. In practical application, the detection light sources 11 in the two light source devices are all light strips including a plurality of LED chips, the length and the light emitting area of the light strips are determined by the area of the board strip 20 to be detected and the detection area of the linear array CCD chip 31, and at least the position area of the edge in the board strip 20 to be detected is covered, so that the detection accuracy is improved, and the light strips can be properly adjusted according to practical situations. As an example, the light strip is sized to be 1 meter long and 20-30 millimeters wide. In addition, the distances between the detection light sources and the two CCD sensors in the two light source devices and the plate belt to be detected are not particularly limited here, and the adjustment and the setting can be carried out according to actual detection needs.
In this embodiment, before detecting the width of the strip, two CCD sensors need to be debugged, and in particular, the detection of the linear array CCD chip therein is calibrated, so that the detection purpose is achieved according to the calibration in the detection process.
The calibration principle is as follows: assuming that the first CCD sensor collects a left edge signal M1 of the plate band, the second CCD sensor collects a right edge signal M2 of the plate band, based on the configuration of the two CCD sensors, when the plate band to be detected moves left, the left edge signal M1 is reduced, and the right edge signal M2 is increased; when the detected plate belt moves right, the left side edge signal M1 increases, and the right side edge signal M2 decreases. M1+M2 is basically kept unchanged in a certain detection range, and the occurrence of the plate and strip edges in the edge nonlinear areas of the two CCD sensors is avoided as much as possible.
In the calibration process: firstly, selecting a board with the same width as the narrowest part of the board belt, placing the board at the position with the same height as the actual board belt, and recording the value of M1+M2 by a signal processing module; and then, selecting a board with the same width as the widest part of the board belt, placing the board at the position with the same height as the actual board, and recording the value of M1+M2 by the signal processing module. Assuming that the sensor is linear, taking m=k x+b; wherein m=m1+m2; x is the widest and narrowest calibrated plate width, and the linear coefficient K and the constant B are calculated to obtain a curve function, so that calibration is completed.
Based on the above, after the signal processing module acquires the plate and strip edge position signals of the two CCD sensors at high speed, the current actual plate and strip width can be obtained by the inverse cloud based on the sampled M (M1+M2) value and the calibrated curve M=K x+B, and after the calculation is finished, the plate and strip data is sent to the display screen and displayed. Meanwhile, the signal processing module continuously detects the deviation of the actual plate width and the set plate width according to the data of the crescent notch arranged in the current display screen, and when the actual plate width is judged to be larger than the set crescent notch, the detected crescent notch quantity is displayed on the display screen.
The linear array CCD chips in the two CCD sensors can be selected according to practical application, such as a Toshiba high-precision linear array CCD chip. When the method is applied to the detection of the metal plate and strip running at high speed, the precision is required, the detection response time is required to be fast, the high-precision linear array CCD chip is selected, the high-speed AD signal sampling chip is selected for matching, the high-speed linear array CCD chip and the AD signal sampling chip are driven by the FPGA chip to obtain initial analog quantity, and then the accurate plate and strip edge position is obtained through an image processing operator; finally, the rapid output of the board band signal is realized through the digital communication interface.
In another embodiment of the utility model, the plate belt crescent detection system further comprises an alarm device connected with the signal processing module. Therefore, the display transmits the plate and strip data to the signal processing module (the display and the signal processing module are connected through the serial port), the signal processing module judges the deviation degree of the actual plate width and the set plate width according to the transmitted data, and if the deviation is larger than a preset deviation threshold value, the alarm device is controlled to alarm, such as sound control alarm, light control alarm and the like. In addition, the signal processing module also can send related information to the main controller of the production line through the PROFINET module which is the mainstream of the industrial communication at present.
It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the utility model, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the utility model.
Claims (5)
1. The utility model provides a plate belt crescent moon detecting system, its characterized in that waits to detect the plate belt and transversely moves on the guide roll, just wait that the both sides symmetry of detecting the plate belt has seted up crescent notch, plate belt crescent moon detecting system includes:
the first light source device and the second light source device are symmetrically arranged at two sides of the plate belt to be detected below the plate belt to be detected, and the inside of the first light source device and the second light source device respectively comprise detection light sources which emit light towards the edge position direction of one side of the plate belt to be detected;
the first CCD sensor and the second CCD sensor are symmetrically arranged on two sides of the plate belt to be detected above the plate belt to be detected, the first CCD sensor is matched with the first light source device, the second CCD sensor is matched with the second light source device, and the edge positions of the plate belt on the corresponding sides are detected;
the signal processing module is used for processing detection signals of the first CCD sensor and the second CCD sensor, and is respectively connected with the first CCD sensor and the second CCD sensor; a kind of electronic device with high-pressure air-conditioning system
And the display screen is used for displaying the detection data and is connected with the signal processing module.
2. The belt crescent detection system of claim 1 wherein the detection light source in the first and second light source arrangements is a light belt comprising a plurality of LED chips.
3. The belt crescent detection system of claim 1 wherein the first and second light source arrangements further comprise:
the light intensity detection chip is used for detecting the light intensity of the detection light source;
the CPU is used for processing the light intensity signals detected by the light intensity detection chip to generate light source control signals, and is connected with the light intensity detection chip;
the LED driving chip is used for driving the detection light source to emit light according to the light source control signal generated by the CPU processor, and the LED driving chip is respectively connected with the CPU processor and the detection light source.
4. The belt crescent detection system of any one of claims 1-3 wherein the first and second CCD sensors each comprise:
the linear array CCD chip detects towards the direction of the plate strip to be detected;
the AD signal sampling chip is used for sampling and converting the analog detection signals of the linear array CCD chip into digital detection signals, and the AD signal sampling chip is connected with the linear array CCD chip;
the FPGA chip is used for respectively driving the linear array CCD chip and the AD signal sampling chip and processing the digital detection signals to generate detection results, and is respectively connected with the linear array CCD chip and the AD signal sampling chip; a kind of electronic device with high-pressure air-conditioning system
And the communication interface is used for realizing communication with external equipment and is connected with the FPGA chip.
5. The belt crescent detection system of any one of claims 1-3 wherein the belt crescent detection system further comprises an alarm device coupled to the signal processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222666445.6U CN219608800U (en) | 2022-10-10 | 2022-10-10 | Plate belt crescent moon detection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222666445.6U CN219608800U (en) | 2022-10-10 | 2022-10-10 | Plate belt crescent moon detection system |
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| Publication Number | Publication Date |
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| CN219608800U true CN219608800U (en) | 2023-08-29 |
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| CN202222666445.6U Active CN219608800U (en) | 2022-10-10 | 2022-10-10 | Plate belt crescent moon detection system |
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