Device and method for measuring concentration of syrup in saccharose tank

The invention discloses a device and a method for measuring the concentration of syrup in a saccharose tank. The device comprises a dual-kind electrode sensor used for acquiring a plurality of resistance value data of the cross section of the saccharose tank, and a syrup concentration analyzing system used for receiving the plurality of resistance value data acquired by the dual-kind electrode sensor and calculating the concentration value of syrup in the saccharose tank according to the resistance value data, wherein the dual-kind electrode sensor comprises a bar-shaped metal electrode and N rectangular metal electrodes, the bar-shaped metal electrode and the N rectangular metal electrodes are arranged at equal intervals along the circumferential direction of the inner wall of the saccharose tank, the electrodes and the saccharose tank are insulated, and the saccharose tank is always grounded, wherein the bar-shaped metal electrode is arranged at the place which is 1/2 of the height of the rectangular metal electrodes. According to the device, by using a manner of measuring electrical impedances between the bar-shaped metal electrode and the rectangular metal electrodes by virtue of the dual-kind electrode sensor, the object field information of the sensor of the cross section in the saccharose tank can be completely reflected, so that the measurement precision is relatively high.