Electronic sag plate

The invention relates to the technical field of sag measurement, in particular to an electronic sag plate which comprises a box body, a sag plate body and a code belt, and an installation cavity is formed in the box body. The device is reasonable and compact in structure and convenient to use, left-right movement of the code belt can be limited by arranging the limiting holes, the measurement accuracy is improved, observation personnel can observe the code belt conveniently through the sag plate, meanwhile, the code belt can be in a tensioned state all the time, and the device is hung on a tower hanging point or the lower portion of a stringing pulley during use; the code belt walking length is set on the operation processing unit, the control unit enables an output shaft of the driving motor to rotate forwards, the sag plate moves downwards, signals collected by the collecting device are converted into actual movement data through the code reading unit, then the actual movement data are compared with the cod