1、 Collision detection system of industrial robot
But with the development of technology, robots begin to undertake more and more complex tasks. These tasks sometimes require staff to intervene at any time, so the safety of human-computer interaction is a crucial issue in this case. To ensure safety, the controller needs to detect whether there is a collision between the robot and the staff in real time, and ensure that the staff will not be injured during the collision through the control strategy. At present, most detection of collision or collision force is achieved by adding external sensors.
There are several ways to detect collision. The wrist force sensor is used to detect collision: it can accurately detect the collision force at the end of the hand grip, but it cannot detect the collision at other parts of the robot. The detection range is limited. Usually, it is used to detect the collision force at the end of the hand grip, such as grinding force, assembly force, and so on. The sensing skin is used to detect collision: the sensing skin is covered on the whole body of the robot, and the collision at any part can be detected. However, the disadvantages are that the wiring is relatively complex, and the anti-interference ability is poor. In the whole process, the amount of calculation of the processor is also increased to detect the collision through the current or feedback torque of the motor: this is a collision scheme widely used in various industrial robots, and no additional sensors need to be used. The advantage is that the detection range can cover the entire surface of the robot.
2、 What can industrial robots bring to enterprises
Industrial robots bring many benefits to the manufacturing industry, the first of which is to improve production efficiency. Compared with manual labor, AGV, robotic arm and other industrial robots can complete work faster, and can work continuously for 24 hours without rest.
The second is to save labor costs. For example, in a printed circuit board industry, the use of six-axis robotic arm machines to replace simple and repetitive operations such as manual loading and unloading, polishing, can replace 2 to 4 workers (day shift/night shift). Therefore, the use of industrial robots can significantly reduce labor costs. Moreover, because of the reliability of the machine relative to human, it can also reduce the scrap costs caused by quality defects, and there is no management problem caused by human personality, thus saving management costs.
Improve the consistency of production. Once the AGV, manipulator and other industrial robots are set up, they can move accurately and repeatedly, without management, and can maintain high consistency of quality. In some aspects, industrial robots are both employees and quality control systems. They have no preferences, eliminate the possibility of human error, and produce predictable good products every time.
Reduce the impact of labor flow on factory production and reduce labor disputes. In the process of operation, enterprises need to spend a lot of energy to fill the position gap of repetitive manual work, temporary workers have poor stability and reliability, or need to spend a lot of time to learn the production process, and mechanical repetitive or dangerous operation process affects the health and safety of employees. Industrial robots such as AGV and robotic arm can work directly without training and will not leave the company. It is very stable and can improve work efficiency on the premise of ensuring safety.