Photoelectric coding recognition device

The utility model discloses a photoelectric coding recognition device, including code board, photoelectric sensor and controller, the code board includes two upper and lower scheduling sign indicating number teeth, and upward the quantity of code tooth is a plurality of in scheduling sign indicating number tooth and the lower scheduling sign indicating number tooth, and each code tooth all is squarely, photoelectric sensor forms by upper and lower two pairs, and parallel arrangement about being, go up and be arranged in detecting in proper order the perpendicular border of each code tooth of last scheduling sign indicating number tooth to photoelectric sensor to reach the controller in real time with the testing result, down be arranged in detecting to photoelectric sensor and whether sheltered from by certain tooth of encoding of scheduling sign indicating number tooth down constantly the time at t to reach the controller in real time with the testing result, the controller according to last to photoelectric sensor with down to photoelectric sensor's the testing result numeral number that the board corresponds of being encoded, wherein, t goes up the moment that detects certain perpendicular border of code tooth to photoelectric sensor. The utility model discloses can accurately recognise the serial number of the section of thick bamboo yarn tongs of this code board representative.