32results about How to "Avoid Manual Recording" patented technology

The application relates to a device for identifying chipped key teeth. The device for identifying chipped key teeth includes a housing and at least one set of identification components arranged inside the housing. The identification components include blades, a sliding mechanism, a variable resistance device and an identification circuit. The sliding mechanism Made of conductive material. The blade is provided with a key hole and a blocking block, the key hole is used for inserting the key head, and the blocking block is used for controlling the movement of the blade under the extrusion effect of the tooth flower structure when the key head is inserted into the key hole. One end of the sliding mechanism is connected to the blade, and the other end is arranged on the variable resistance device, and can slide relative to the variable resistance device. The first end of the identification circuit is connected to the sliding mechanism, and the second end is connected to one end of the variable resistance device. The identification circuit is used to obtain the electrical parameters representing the actual resistance value of the variable resistance device connected to the identification circuit, so as to calculate through the electrical parameters The teeth of the key head are graded. The key chipping identification device provided in the embodiment of the present application can ensure the accuracy of the number of chippings on the key head.

Disclosed is a method for detecting the vibration of an arm rest of engineering machinery. The method comprises: reading a rotation angle of an arm rest in a horizontal plane and a rotation angle of the arm rest in a vertical plane at multiple points of time (S102); calculating three-dimensional coordinates of an end portion of the arm rest at each point of time according to the length of the arm rest and the rotation angle in the horizontal plane and the rotation angle in the vertical plane read at each point of time (S104); obtaining, according to the three-dimensional coordinates at each point of time obtained through calculation, a condition of the three-dimensional coordinates changing with time (S106). The method conveniently detects the vibration of an arm rest in different gestures in three-dimensional directions, is more intelligent and automatic, avoids the work of manually recording the coordinates of the end portion of the arm rest, and obtains a more accurate detection result. Also disclosed are a device and a system for detecting the vibration of an arm rest of engineering machinery by using the foregoing method and engineering machinery comprising the system.