CN203720103U

CN203720103U - Real-time detection system for defects of PET (Polyethylene Terephthalate) bottle cap based on FPGA (Field Programmable Gate Array)

Info

Publication number: CN203720103U
Application number: CN201420113145.8U
Authority: CN
Inventors: 谢云; 邱新华; 周宇媚
Original assignee: Guangdong University of Technology
Current assignee: Guangdong University of Technology
Priority date: 2014-03-13
Filing date: 2014-03-13
Publication date: 2014-07-16
Anticipated expiration: 2024-03-13

Abstract

The utility model discloses a real-time detection system for defects of a PET (Polyethylene Terephthalate) bottle cap based on an FPGA (Field Programmable Gate Array). The real-time detection system for the defects of the PET bottle cap based on the FPGA is mainly composed of a rack, a driven roller, a driving roller, a servo motor, a conveyor belt, an ultrasonic transducer, an FPGA processor, a red annular light source and a high-speed area-array camera. The system utilizes the advantage of high-speed parallel processing of the FPGA to detect whether the edge of a PET bottle cap screw ring and the edge of a sealing ring have the defects or not and whether the sealing ring of the bottle cap has stains or not so as to judge whether the quality of the bottle cap is qualified or not; the rapidness and the accuracy of the detection of the defects of the PET bottle cap are realized; the defects of a traditional detection system for the defects of the PET bottle cap based on a PC (Personal Computer) that the cost is high, the volume is large, the power consumption is great, the efficiency is low and the like are overcome; the detection speed can be up to 36000piece/H and the precision is higher than 5 microns.

Description

PET bottle cap defect real-time detecting system based on FPGA

Technical field

The utility model relates to the real-time checkout equipment of a kind of bottle cap defect, specifically based on the field programmable gate array PET bottle cap defect real-time detecting system of (Field Programmable Gate Array is called for short FPGA).

Background technology

Polyethylene terephthalate (PET) is a kind of environment friendly plastic rubber, is widely used in production of bottles.At present, the production of plastic bottle closure and body is in prostatitis, the world.But in process of production, have substandard product and produce, be necessary it to carry out quality testing.Current domestic bottle cap detects the main artificial visual that relies on and detects, and because bottle cap speed of production can reach more than per second ten, manual detection cannot meet the requirement of speed; And the domestic research to PET bottle cap Machine Vision Inspecting System is little, although someone has proposed a kind of PET bottle cap defect on-line detecting system based on machine vision, can be without direct contact and higher speed PET bottle cap defect be detected, but this detection method is the PC device vision system based on traditional, its cost is more expensive, and power consumption is large, bulky, be not suitable for being installed in the specific occasion of volume requirement the bottle cap defect on-line detecting system of market in urgent need Cheap highly effective.

State Intellectual Property Office was on February 1st, 2012, disclosing publication number is CN202133345U, patent name is the patent of Novel bottle cap detection apparatus, this patent comprises that a detection substrate and detects body, detecting body is movably fixed on detection substrate, on detection body, be provided with at least one passage, described passage comprises introduction channel and sense channel, on sense channel, be provided with and prevent that abnormal bottle cap is subject to the extruding of follow-up whereabouts bottle cap and by the block piece of sense channel, on block piece, be provided with the bottle cap stoping after abnormal bottle cap and enter the inclined-plane of sense channel.The utility model is simple in structure, easy for installation, utilize bottle cap self gravitation to pass through sense channel, block piece stops the whereabouts bottle cap after abnormal bottle cap in sense channel, ensure abnormal bottle cap can not be subject to the extruding of follow-up bottle cap and passed through sense channel, make to detect error little, can line production.

There is substantial difference in the technical scheme of above-mentioned patent and this patent.

Summary of the invention

The purpose of this utility model is to provide that one reduces costs, volume and power consumption, realizes the PET bottle cap defect real-time detecting system based on FPGA of rapidity and the accuracy of PET bottle cap defects detection.Judge that whether bottle cap quality is qualified thereby whether whether the advantage that this system is utilized the processing of FPGA high-speed parallel have a stain to detect in defectiveness and bottle cap sealing circle to PET bottle cap bung flange ring edge, O-ring seal edge.

For achieving the above object, the technical scheme that the utility model adopts is:

PET bottle cap defect real-time detecting system based on FPGA, it is mainly by frame, driven cylinder, drive roll, servomotor, conveying belt, ultrasonic sensor, FPGA processor, red annular light source and high-speed area array camera form, driven cylinder and drive roll level are located in frame, conveying belt is located on driven cylinder and drive roll, described red annular light source is located at the top of conveying belt, high-speed area array camera be located at red annular light source directly over, described ultrasonic sensor be located at the both sides up and down of conveying belt and be positioned at red annular light source under, PET bottle cap to be checked is put on the belt, servomotor moves by drive roll driving conveying belt, when described ultrasonic sensor detects PET bottle cap to be checked, send information to FPGA processor, FPGA processor cuts out servomotor, and start high-speed area array camera, the PET bottle cap image to be checked that high-speed area array camera photographed sends FPGA processor to, FPGA processor, in order to judge whether PET bottle cap image to be checked exists defect.

Described high-speed area array camera is CMOS type high-speed area array camera.

Also comprise lighting box and be fixed on the support on the sidewall in light lighting box, described red annular light source and high-speed area array camera are fixed on support.

Also comprise Pneumatic mechanical hand, qualified bottle cap passage and defective bottle cap passage, qualified bottle cap passage and defective bottle cap passage are located at the output terminal of conveying belt, and qualified bottle cap flows into qualified bottle cap passage; FPGA processor control Pneumatic mechanical hand, Pneumatic mechanical hand is sent defective bottle cap into defective bottle cap passage.

Described frame is rectangular structure, and conveying belt is black belt.

Described FPGA processor is connected with data center by 10/100 Ethernet mouth.

The beneficial effects of the utility model: owing to adopting above-mentioned version, collection, the processing of image all combine on FPGA processor, the PET bottle cap that different parameters can detect different model is rapidly and accurately set, expensive, the defect such as volume is large, power consumption is large, efficiency is low of the PET bottle cap defect detecting system of tradition based on PC are overcome, and detection speed can reach 36000/H, more than precision reaches 5um.

Brief description of the drawings

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:

Fig. 1 is the structural representation of embodiment mono-of the present utility model.

In figure: 1, frame; 2, driven cylinder; 3, drive roll; 4, servomotor; 5, conveying belt; 6, ultrasonic sensor; 7, FPGA processor; 8, red annular light source; 9, high-speed area array camera; 10, lighting box; 11, support; 12, PET bottle cap; 13, Pneumatic mechanical hand; 14, qualified bottle cap passage; 15, defective bottle cap passage.

Embodiment

As shown in Figure 1, PET bottle cap defect real-time detecting system based on FPGA, it is mainly by frame 1, driven cylinder 2, drive roll 3, servomotor 4, conveying belt 5, ultrasonic sensor 6, FPGA processor 7, red annular light source 8, high-speed area array camera 9, lighting box 10 and the support 11 being fixed on the sidewall in light lighting box 10 form, described frame 1 is rectangular structure, conveying belt 5 is black belt, described high-speed area array camera 9 is CMOS type high-speed area array camera, driven cylinder 2 and drive roll 3 levels are located in frame 1, conveying belt 5 is located on driven cylinder 2 and drive roll 3, described red annular light source 8 and high-speed area array camera 9 are fixed on support 11, and red annular light source 8 is located at the top of conveying belt 5, high-speed area array camera 9 be located at red annular light source 8 directly over, described ultrasonic sensor 6 be located at the both sides up and down of conveying belt 5 and be positioned at red annular light source 8 under, PET bottle cap 12 to be checked is placed on conveying belt 5, servomotor 4 moves by drive roll 3 driving conveying belts 5, when described ultrasonic sensor 6 detects PET bottle cap 12 to be checked, send information to FPGA processor 7, FPGA processor 7 cuts out servomotor 4, and start high-speed area array camera 9, the PET bottle cap image to be checked that high-speed area array camera 9 photographed sends FPGA processor 7 to, FPGA processor 7, in order to judge whether PET bottle cap image to be checked exists defect.In addition, described FPGA processor 7 is connected with data center by 10/100 Ethernet mouth.

Also comprise Pneumatic mechanical hand 13, qualified bottle cap passage 14 and defective bottle cap passage 15, qualified bottle cap passage 14 and defective bottle cap passage 15 are all located at the output terminal of conveying belt 5, and qualified bottle cap flows into qualified bottle cap passage 14; FPGA processor 7 is controlled Pneumatic mechanical hand 13, and Pneumatic mechanical hand 13 is sent defective bottle cap into defective bottle cap passage 15.

It is the chip of CycloneIII EP3C40F484C8 that the chip of FPGA processor 7 adopts model.CMOS type high-speed area array camera adopts the camera of MC1310 model.

The above is preferred implementation of the present utility model; certainly can not limit with this interest field of the utility model; should be understood that; for those skilled in the art; the technical solution of the utility model is modified or is equal to replacement, do not depart from the protection domain of technical solutions of the utility model.

Claims

1. the PET bottle cap defect real-time detecting system based on FPGA, it is characterized in that: it is mainly by frame, driven cylinder, drive roll, servomotor, conveying belt, ultrasonic sensor, FPGA processor, red annular light source and high-speed area array camera form, driven cylinder and drive roll level are located in frame, conveying belt is located on driven cylinder and drive roll, described red annular light source is located at the top of conveying belt, high-speed area array camera be located at red annular light source directly over, described ultrasonic sensor be located at the both sides up and down of conveying belt and be positioned at red annular light source under, PET bottle cap to be checked is put on the belt, servomotor moves by drive roll driving conveying belt, when described ultrasonic sensor detects PET bottle cap to be checked, send information to FPGA processor, FPGA processor cuts out servomotor, and start high-speed area array camera, the PET bottle cap image to be checked that high-speed area array camera photographed sends FPGA processor to, FPGA processor, in order to judge whether PET bottle cap image to be checked exists defect.

2. the PET bottle cap defect real-time detecting system based on FPGA according to claim 1, is characterized in that: described high-speed area array camera is CMOS type high-speed area array camera.

3. the PET bottle cap defect real-time detecting system based on FPGA according to claim 1, is characterized in that: also comprise lighting box and be fixed on the support on the sidewall in light lighting box, described red annular light source and high-speed area array camera are fixed on support.

4. according to the PET bottle cap defect real-time detecting system based on FPGA described in claims 1 to 3 any one, it is characterized in that: also comprise Pneumatic mechanical hand, qualified bottle cap passage and defective bottle cap passage, qualified bottle cap passage and defective bottle cap passage are located at the output terminal of conveying belt, and qualified bottle cap flows into qualified bottle cap passage; FPGA processor control Pneumatic mechanical hand, Pneumatic mechanical hand is sent defective bottle cap into defective bottle cap passage.

5. the PET bottle cap defect real-time detecting system based on FPGA according to claim 4, is characterized in that: described frame is rectangular structure, and conveying belt is black belt.

6. the PET bottle cap defect real-time detecting system based on FPGA according to claim 5, is characterized in that: described FPGA processor is connected with data center by 10/100 Ethernet mouth.

7. the PET bottle cap defect real-time detecting system based on FPGA according to claim 1, is characterized in that: it is the chip of CycloneIII EP3C40F484C8 that the chip of described FPGA processor adopts model.