Abstract: An optical safety sensor is inexpensively implemented. An optical safety sensor includes: a plurality of light projectors/receivers (a first light projector/receiver and a second light projector/receiver), which includes light projecting portions and light receiving portions; distance measurement portions, which measure distances using the time from light projecting to light receiving; and detection portions, which detect, based on measurement results, an abnormality occurring in any one of the plurality of light projectors/receivers; each of the light receiving portion provided in the plurality of light projectors/receivers receives reflected light caused by the light projected from the light projecting portions of all the plurality of light projectors/receivers.

Abstract: A technique allows verification of a robot operation without any cost for an additional robot or for a person entering a monitoring area. A robot control system includes a monitored robot for which a monitoring area is defined and a robot controller that controls the monitored robot in a plurality of modes including a first mode to change an operation of the monitored robot in response to an object detected in the monitoring area being a robot.

Abstract: Provided is a highly safe robot system. A robot system includes: an arm operation control unit that controls operations of an arm; and a storage unit that records hazardous part information related to at least any one of a grip unit of the arm and a work target gripped with the grip unit, and the arm operation control unit causes the arm to operate such that the hazardous direction of the hazardous part is different from a moving direction of the grip unit on the basis of the hazardous part information.

Abstract: An industrial robot having high operability for a user is provided. An industrial robot includes a manipulator, a controller which controls an operation of the manipulator, and a detection device attached to the manipulator and detecting a gesture input. The controller executes a process corresponding to the detected gesture input.

Abstract: A safety control device, a method of controlling safety control device, and a recording medium are provided. A detection zone in which the safety of an operator can be secured and a decrease in an operation rate of a machine can be minimized is set. A safety controller sets a detection zone for executing a safety operation when it is determined that an operator has entered for each operator.

Abstract: A monitoring system, a monitoring device, and a monitoring method are provided. The monitoring system includes a detection part that detects a position of a worker intruded into a work area, a first specifying part that specifies a worker movable area on the basis of a position of the worker, an image capturing part that captures an image of an area including at least the worker movable area and a predetermined robot occupied area, a second specifying part that specifies a robot movable area from the image of the area, a third specifying part that specifies a human body area of the worker from the image of the area, a measuring part that measures the distance between the robot movable area and the human body area, and a restricting part that restricts movement of the robot when the distance is equal to or less than a predetermined distance.

Abstract: An optical safety sensor is inexpensively implemented. An optical safety sensor includes: a plurality of light projectors/receivers (a first light projector/receiver and a second light projector/receiver), which includes light projecting portions and light receiving portions; distance measurement portions, which measure distances using the time from light projecting to light receiving; and detection portions, which detect, based on measurement results, an abnormality occurring in any one of the plurality of light projectors/receivers; each of the light receiving portion provided in the plurality of light projectors/receivers receives reflected light caused by the light projected from the light projecting portions of all the plurality of light projectors/receivers.

Abstract: Provided is a robot system with improved safety and workability. A robot system includes: a movable machine control part, controlling operation of a movable mechanical part operating in a first mode and a second mode; a teaching content registration part, registering teaching content input by applying an operating force to the movable mechanical part; a first sensor, monitoring a first monitoring area set around the movable mechanical part; and an operating mode switch part, switching between a first mode in which the operation of the movable mechanical part is decelerated or stopped when intrusion of an object into the first monitoring area is detected and a second mode in which the teaching content can be accepted and executed while contact of a user with the movable mechanical part is being detected.

Abstract: A monitoring system, a monitoring device, and a monitoring method that can facilitate designing of a working environment are provided. Positions of a worker and a robot in a three-dimensional space are specified, at least one protection area to secure safe work of the worker and the robot is set, whether at least one of the worker and the robot intrudes into the protection area is determined, the motion of the robot is limited when at least one of the worker and the robot intrudes into the protection area, a protection area for executing the determination is being switched from multiple set protection areas, and it is possible to set the protection area when the worker works in a common area in which a work area of the worker and a work area of the robot overlap and set the protection area when the robot works in the common area.

Abstract: Provided is a technology which secures safety of a moving body and prevents collision between a robot and the moving body. A detection unit detects a relative positional relationship between a robot arm which is able to move about a support pointy and a moving body by a sensor attached to the robot arm. A control unit generates a drive control signal of an actuator which causes the robot arm to be able to move on the basis of a change in the relative positional relationship between the robot arm and the moving body detected by a detecting unit. An output unit outputs the drive control signal generated by the control unit to the actuator. The control unit generates the drive control signal which changes a speed at which the robot arm is able to move in accordance with the change in the relative positional relationship with the moving body.

Abstract: Provided is a relay unit that is inexpensive and has a long life, and a method for controlling a relay circuit. A series circuit of mechanical switches is connected in series to a load and a load power supply, and a control unit selects one of the mechanical switches as a selected switch, and performs a switching timing shift, which is constituted by at least one of a first operation in which the selected switch is switched to the closed state after the mechanical switch other than the selected switch, and a second operation in which the selected switch is switched to the open state prior to the mechanical switch other than the selected switch.

Abstract: A miniature and inexpensive relay device is provided. A relay device, i.e., a relay unit, includes a breakdown detection unit that does not detect breakdown of an operation of a first switching element and detect breakdown of an operation of a second switching element. When a switching control unit switches an external load circuit from non-conductivity to conductivity, the switching control unit switches the second switching element from non-conductivity to conductivity after switching the first switching element from non-conductivity to conductivity. When the switching control unit switches the load circuit from conductivity to non-conductivity, the switching control unit switches the first switching element from conductivity to non-conductivity after switching the second switching element from conductivity to non-conductivity.

Abstract: A safety control device, a method of controlling safety control device, and a recording medium are provided. A detection zone in which the safety of an operator can be secured and a decrease in an operation rate of a machine can be minimized is set. A safety controller sets a detection zone for executing a safety operation when it is determined that an operator has entered for each operator.

Abstract: Provided is a highly safe robot system. A robot system includes: an arm operation control unit that controls operations of an arm; and a storage unit that records hazardous part information related to at least any one of a grip unit of the arm and a work target gripped with the grip unit, and the arm operation control unit causes the arm to operate such that the hazardous direction of the hazardous part is different from a moving direction of the grip unit on the basis of the hazardous part information.

Abstract: An industrial robot having high operability for a user is provided. An industrial robot includes a manipulator, a controller which controls an operation of the manipulator, and a detection device attached to the manipulator and detecting a gesture input. The controller executes a process corresponding to the detected gesture input.

Abstract: There is provided a robot system that maintains productivity with high safety and with high operation efficiency. A robot system includes an arm operation control unit configured to control an operation of an arm and a moving subject detection unit configured to detect whether a moving subject is present in an operation direction region of the arm. When the moving subject detection unit has detected the moving subject, the arm operation control unit operates the arm at an operation speed that is different from an operation speed of the arm when no moving subject has been detected.

Abstract: A monitoring system, a monitoring device, and a monitoring method are provided. The monitoring system includes a detection part that detects a position of a worker intruded into a work area, a first specifying part that specifies a worker movable area on the basis of a position of the worker, an image capturing part that captures an image of an area including at least the worker movable area and a predetermined robot occupied area, a second specifying part that specifies a robot movable area from the image of the area, a third specifying part that specifies a human body area of the worker from the image of the area, a measuring part that measures the distance between the robot movable area and the human body area, and a restricting part that restricts movement of the robot when the distance is equal to or less than a predetermined distance.

Abstract: Provided is a relay unit that can sufficiently suppress defects that are caused by an insulation failure of insulating member that insulates and separates a load power supply from a device power supply, and a method for controlling a relay circuit. A control unit includes an insulating member diagnosis unit that performs diagnosis of an insulation failure of the capacitor.

Abstract: The reliability of testing a normally closed contact in a relay unit may involve the following. While the load is de-energized, sending a test signal to a normally closed contact (b1, b2) and detecting the state of the returning test signal sent. Resending a test signal when a detection result does not satisfy a predetermined criteria, and re-detecting the state of the returning test signal resent. The state of the returning test signal resent may be assessed as normal when the re-detection result satisfies the predetermined criteria.

Abstract: A monitoring system, a monitoring device, and a monitoring method that can facilitate designing of a working environment are provided. Positions of a worker and a robot in a three-dimensional space are specified, at least one protection area to secure safe work of the worker and the robot is set, whether at least one of the worker and the robot intrudes into the protection area is determined, the motion of the robot is limited when at least one of the worker and the robot intrudes into the protection area, a protection area for executing the determination is being switched from multiple set protection areas, and it is possible to set the protection area when the worker works in a common area in which a work area of the worker and a work area of the robot overlap and set the protection area when the robot works in the common area.