Silo material weight measuring system and method

Abstract

The invention provides a silo material weight measuring system and method. The system comprises a data processing center; the data processing center is connected with multiple controllers; the controllers are connected with servo motors; and ropes wind around the servo motors and are connected with weight blocks. The servo motors are started by the controllers, the ropes descend vertically under the traction of the weight blocks, when the weight blocks make contact with materials, the tension of the ropes is reduced, the servo motor current measured by the controllers is reduced, the motors are controlled by the controller to stop operation, the rotation circle numbers of the motors are recorded, the descending heights of the ropes are obtained, then the descending heights of the ropes aresubtracted from the known silo height, and the material heights at the points are obtained. The system and the method have the advantages that the problem about accurate measurement of silo materialsin the industry is solved, and the system has the characteristics that the system is simple in structure, safe, not affected by dust and noise, high in measurement speed, relatively low in cost and the like.

Description

Technical field: [0001] The invention belongs to the technical field of weight measurement, and in particular relates to a silo material weight measurement system and method. Background technique: [0002] At present, it is a difficult problem to accurately measure the volume and weight of materials in large silos, and there is generally no effective method in the industry; at present, the common method is to set up several observation ports on the top of the silo, measure manually through ropes or measuring rods, and then take the average Simple methods such as measurement are inaccurate and cannot be measured in real time; because the stored materials are as many as several thousand tons and there is a lot of dust, conventional technologies such as weighing are not feasible; laser radar, acoustic radar, and microwave radar can be measured through three-dimensional The form of scanning distance measurement can obtain the shape of the material surface, and then obtain the vo...

AI Technical Summary

Problems solved by technology

[0002] At present, it is a difficult problem to accurately measure the volume and weight of materials in large silos, and there is generally no effective method in the industry; at present, the common method is to set up several observation ports on the top of the silo, measure manually through ropes or measuring rods, and then take the average Simple methods such as measurement are inaccurate and cannot be measured in real time; because the stored materials are as many as several thousand tons and there is a lot of dust, conventional technologies such as weighing are not feasible; laser radar, acoustic radar, and microwave radar can be measured through three-dimensional The form of scanning distance measurement can obtain the shape of the material surface, and then obtain the volume and weight of the material; however, there is often strong dust in the silo, so the method of laser scanning distance measurement is not feasible; for the same reason, the method of binocular photography is also Not feasible; acoustic ranging is not sensitive to dust, but silo feeding is often accompanied by strong noise, so it cannot be measured in real time; microwave radar ranging is not sensitive to noise and dust, but the locking time of microwave radar is longer, Coupled with the time of two-dimensional movement, it takes hours or even a day to scan to obtain a three-dimensional picture of the silo material, thus losing the value of real-time measurement

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