Bar resistor coding crack sensor

The invention relates to a bar resistor coding crack sensor, wherein transverse and longitudinal bar resistors which are mutually vertically formed through resistor ink printing and output ends are adopted on the front surface and the reverse surface of insulating paper, the bar resistors adopt a parallel connection mode, and the resistance values thereof are set in a prime number coding mode; each bar resistor is provided with a unique address code; and the bar resistor coding crack sensor has the working principle that after the bar resistor coding crack sensor is pasted on the surface of a building to be measured, when a crack is generated, the bar resistor at a corresponding position cracks, the parallel resistance value of the bar resistors is measured to obtain the address code of the cracked bar resistor, and the position and the size of the generated crack are determined through the address code. Compared with the prior art, the bar resistor coding crack sensor has the remarkable advantages of reasona