53results about How to "Detect anomalies" patented technology

The present invention provides a robot system. For teaching a welding-point position for a robot (1), processing of a robot system includes first processing for moving a spot welding gun (2) to a position at which movable and fixed electrodes (21,22) pinch the welding point; second processing for extending the movable electrode toward a member to be welded by driving of a motor, detecting contact between the movable electrode (21) and the welded member (W)based on a torque command to the motor, and stopping the movable electrode (21)after the contact is detected; and third processing for operating the robot toward the movable electrode(21) to move the fixed electrode (22) toward the welded member (W) while maintaining the contact between the movable electrode (21) and the welded member (W) by the driving of the motor, detecting contact between the fixed electrode (22) and the welded member (W)based on a disturbance torque acting on a joint of the robot (1), and stopping the operation of the robot (1) after the contact is detected.

To protect a power converter by detecting the abnormality of a gate driving circuit and the abnormality of an IGBT element certainly, in a power converter which is constituted of a plurality of IGBT elements. This power converter is composed of a control circuit 100, a pulse generating circuit 200 which generates command pulses to each IGBT, a plurality of gate driving circuits 400a-400n which control the ON-OFF action of the IGBTs, according to the inputted command pulses, IGBTs 500a-500n which are connected to each gate driving circuit, and an abnormality detecting circuit 300. The abnormality detecting circuit judges the disconformity between command pulses RPa-RPn and gate feedback signals FBPa-FBPn outputted from the gate driving circuits. In case that the disconformity state has continued for a certain time, the circuit judges it abnormal, and outputs a signal SUP to switch off all command pulses to the pulse generating circuit.

This malfunction detection device for a passenger conveyor includes: a first sensor disposed on an upper-side horizontal part; a second sensor disposed on a lower-side horizontal part; and a control device into which the output from the first sensor and the second sensor is input. The first sensor and the second sensor each measure the distance to the side surface, along the advancement direction,of each of multiple steps. On the basis of the amount of change in the values measured by the first sensor and the second sensor, the control device detects malfunctions in the passenger conveyor.

The invention discloses an optical fiber MEMS sensor used for a cable joint, which includes a sensing component and a fastening component, the fastening component includes a ring-shaped fastening strip, an installation hole is arranged in the middle of the ring-shaped fastening strip, and the sensor The assembly is installed in the installation hole; the locking assembly includes a locking piece, the locking piece is provided with a through hole, and the two ends of the annular fastening strip pass through the through hole; The fixing of the sensor can ensure that the probe of the sensor sticks to the surface of the cable joint.

The invention relates to a performance evaluation device for an excitation regulator and a PSS (power system stabilizer) of the excitation regulator. The device has the following functions: acquired operating data of a generator and operating data of an excitation system are calculated and analyzed, according to control definite value parameters of a PID (proportion integration differentiation) control model of the excitation regulator and a PSS control model of the excitation regulator, PID and PSS evaluation models corresponding to the actual excitation system are established, and finally, the online monitoring and real-time performance evaluation are performed on the PID and PSS models of the excitation regulator. Under the condition that safe and stable operation of a generator set and a grid is not interfered, the device evaluates the performance of the PID and PSS models of the excitation regulator and solves the problem that the PID and PSS models are very difficult to predict and detect.

An artificial intelligence-based vehicle charging pile monitoring system, comprising an intelligent monitoring module, an information transmission module and a remote monitoring terminal, the intelligent monitoring module is used to collect video images, infrared images and position information of the vehicle charging piles, and the collected images The information and location information are transmitted to the remote monitoring terminal through the information transmission module, and the remote monitoring terminal judges the safety of the car charging pile according to the infrared image, and displays the video image and the location information. The beneficial effects of the invention are as follows: the image processing technology is applied to the safety monitoring of the vehicle charging pile, and the remote and effective safety monitoring of the vehicle charging pile is realized.

A flame detector is provided. A circuit board is disposed in a housing. A first light source emits first light. A light guide member comprised of translucent material guides the first light from the first light source to a light emission portion of the light guide member. A first light receiving element detects second light having a predetermined wavelength unique to the flames. A second light source emits third light to a translucent cover which is disposed between an opening of the housing and the first light receiving element. A second light receiving element detects the third light passedthrough the translucent cover to test the translucency. The first light source, the second light source and the second light receiving element are mounted on the circuit board. The light emission portion is formed into a substantially annular shape which encloses the first light receiving element at a front side of the housing to limit a field of view of the first light receiving element to a predetermined range. And the light guide member has a light entrance portion and a light exit portion for the third light to form a light path from the second light source to the second light receiving element through the translucent cover and the light guide member.