LIMB GUARD SYSTEMS ON SAW MACHINES

Abstract

The invention relates to a limb protection system (100) used in circular saw machines (101) for woodworking that warns the operator if any limb comes too close to the circular saw (23) and stops the saw motor if it comes too close. The viewing device (10), which views the working area of ​​the circular saw (23) from above, scans the circular saw (23) and the surrounding area with an image processing algorithm. When a limb is inserted into the warning area (21), the operator is warned with an audible and visual warning. If the stopping area (22) is breached by the operator, the computer (14) activates and triggers the motor control box (102) to stop the motor.

Description

1 TARIFF LIMB GUARD SYSTEMS ON SAW MACHINES Technical Area 5 The invention provides for any malfunction of the operator's position on circular saw machines used for woodworking. A device that warns you if you bring your limb too close to the circular saw, or even closer. In that case, it relates to a limb protection system that stops the saw motor. State of the Art Limb losses occurring at circular saw machines are generally finger losses. It is observed that all individuals using these machines bear this risk. Circular The emergency stop or braking systems of the saws are activated by triggering and the device 15 It is shut down. The existing methods are divided into two. In the first method, for engine braking... It is necessary to touch the circular saw. The system transmits electrical signals to the device. It detects that it has been touched and the saw shuts down immediately. In the second method, however... By placing multiple cameras in the system and processing the images, limb identification is possible in the emergency area. The motor is stopped when this is detected. These systems operate 20 degrees below ambient light. It carries a risk of being affected. The current patent, US7908950B2, covers the interaction between the user and the rotating saw blade. a system that detects contact between them and instantly stops the blade when contact is detected It includes a braking mechanism. A 25° switch adjusts the position of the braking mechanism relative to the blade. a mechanism and contact that pushes the blade downwards to move the blade away from the user. A regression system has been defined. This is one of the contact-triggered systems mentioned above. It serves as an example. Patent number US10099399B2 describes a 30-inch collar plate around the saw blade. A capacitive sensor is used. The capacitance is taken from the sensor while the motor is running. Based on the change in its signal, a conductive object that gets too close to the saw blade (e.g. The motor automatically stops when something (like a human finger or a sausage) is detected. The patent states that proximity, rather than contact, is sufficient to trigger the stopping process. 2 However, similarly, this patent also does not include any warning mechanism. It is not available. If we look at the systems that use imaging devices, one of them is US11,756,326B2. This patent is noteworthy in this field. The patent describes working with one or more cameras. The system that visualizes the area processes the images using a pre-trained neural network (ML model). The machine-specific three-dimensional “forbidden zone” is dynamically determined, and the operator’s hand… If it enters this area, the safety shutdown is triggered. An alarm or safety event (e.g., of the device) (power cut off) the presence of a human limb was detected from camera footage This is accomplished by creating a three-dimensional area with one or more cameras, allowing the operator to... The aim was to protect his hand. However, a warning zone was established with a camera placed on the hill. or features such as drawing an emergency stop zone and hand detection through image processing. It does not mention it. In application number DE102024136704A1, the rotation of a circular saw machine is 15. The "avoidance zone" is determined based on the position information received from the angle sensor. From above Images of this area are continuously processed by the directed camera. The computer controller, using a machine learning-based model to detect the presence of hands or fingers in images It detects and quickly stops the saw unit if a danger is perceived. However, it gives a warning first, then... The principle of stopping is not adopted. 20 As can be seen, in existing safety systems, especially for circular saws and other Capacitive or electrical contact sensors are used for hazardous machinery. This The systems are activated only when a conductive object comes into contact with the blade. It is entering. However, gloves, dust, moisture, or non-conductive materials can impair detection. This makes things more difficult and, in some cases, reduces reliability. This situation affects users. This can still put them at risk of injury. Although camera and image processing-based systems have begun to be developed, this In systems with low light, fast movement, or complex machinery, there may be delays or inaccuracies. Perception problems may occur. In conclusion, due to the negative aspects described above and the current solutions, the subject matter... Due to its shortcomings, an improvement is needed in the relevant technical field. It has been observed. 35 3 Purpose of the Invention In the system described in the invention, a camera placed on the tip of the circular saw monitors the saw. It identifies 2 risk and emergency zones around it. It covers a wider area. When the operator approaches the area, it triggers an audible and visual warning system. Thus, 5 The operator continues the cutting operation by taking precautions before entering the emergency braking zone. is able to. Compared to similar products, it provides a warning before contact occurs, thus reducing the risk of contact. This is being reduced. Thanks to this warning, 10 vehicles brake in a very short time (like 5ms). The possibility of the systems frequently damaging the saw blade is eliminated. Because it reduces the frequency of the renewal process, it also enables restart and quick commissioning. It offers the opportunity. In addition, it can be easily integrated into existing systems later on. 15 This provides an economical solution. The structural and characteristic features and all the advantages of the invention are given in the figures below. This becomes clearer thanks to the detailed explanation written with references to these figures. It will be understood. 20 Explanation of the Figures Figures 1A and 1B show the open and closed states of the box that constitutes the system described in the invention. It shows. 25 Figures 2A, 2B and 2C show, respectively, the areas not violated and the warning in the system subject to the invention. This indicates situations where the area has been entered and the stopping area has been interfered with. Figure 3 shows the circular saw machine and motor control box of the system that is the subject of the invention. It shows the relationship. The drawings do not necessarily need to be scaled and are useful for understanding the invention. Unnecessary details may have been omitted. 4 Explanation of Part References 10. Imaging device 11. Power supply 12. Warning device 5 13. Warning exit 14. Computer 20th limb 21. Warning area 22. Stopping area 10 23. Circular saw 31. Processed part 32. Screen 33. Lighting 100. Limb protection system 15 101. Circular saw bench 102. Motor control box Detailed Description of the Invention In this detailed explanation, the preferred configurations of the invention are not merely for better understanding the subject. in order to facilitate understanding and without imposing any limiting effects It is explained. The invention is for the operation of 25 operators on circular saw machines (101) used for woodworking. It gives a warning if he brings any limb close to the circular saw (23), a limb protection system (100) that stops the saw motor if it gets too close. It is related to the working area of ​​the circular saw (23) from above, as shown in Figure 3. display device (10), circular saw with image processing algorithm (23) scans the area around it. Within the scanned area, 30 digitally There are 2 risky areas that have been created: warning area (21) and stop area. area (22). These areas (21, 22) are turned around by a circular saw (23) either automatically or manually. is drawn. As in the scenarios shown in Figures 2A, 2B and 2C, the warning area (21) When a limb is inserted, the operator is warned with an audible and visual warning. Visual warnings are given by the warning device (12) upon triggering by the computer (14). 35 Optionally, the engine speed can also be slowed down. Stopping area. (22) If violated by the operator, the computer (14) will take over and control the motor. The box (102) triggers the engine to stop. In a preferred configuration of the invention, the imaging device (10), the warning device (13) and 5 The power supply (11) that feeds the computer (14) is located. In another preferred configuration of the invention, to illuminate the image-taking area lighting (33) is used. Another preferred aspect of the invention is that the calibration is done correctly and the system There is a screen (32) to confirm that it is working.

Claims

6 REQUESTS 1. The saw benches have a limb protection system (100) and its feature is;  Viewing the working area of ​​the circular saw (23) from above. device (10), 5  The digitally determined warning area (21) and stop of the received image Determining whether it violates the area (22) with an image processing algorithm, When the stopping area (22) is violated, the motor control box (102) is circular The computer (14) that triggers the saw (23) to stop,  If a limb is inserted into the warning area (21), it will give an audible and visual warning. warning device (12) It includes.

2. A limb protection system (100) in accordance with Claim 1, and its feature is; imaging device (10), It includes a warning device (13) and a power supply (11) that feeds the computer (14). 15 3. A limb protection system (100) in accordance with claim 1, whose feature is; image acquisition area It includes illuminating lighting (33).