A method and system for calculating the storage capacity of storage tanks based on virtual pulses

Abstract

The invention discloses a method and system for calculating the stock volume of a storage cabinet based on virtual pulses. A frequency changer drive motor drives a conveying bottom belt to rotate to convey the storage cabinet to store materials. The method comprises the following steps: collecting a frequency parameter of a frequency changer, calculating a total moving length of the conveying bottom belt and a current moving length of the conveying bottom belt according to a formula S = V.t, generating a total number of virtual pulses the same as the total stock volume according to the principle that the total stock volume of the storage cabinet is equal to the actual total number of virtual pulses output by the total moving length of the conveying bottom belt, and calculating the number of the output virtual pulses according to the current moving length of the conveying bottom belt to obtain the current stock volume of the storage cabinet; and according to the method disclosed by the invention, the speed of the bottom belt of the storage cabinet is controlled by the frequency changer drive motor, the conveyed materials are calculated by the virtual pulses, the speed regulation of the bottom belt of the storage cabinet and the calculation of the stock volume of the storage cabinet are achieved flexibly, the equipment cost and the maintenance cost are reduced, and the accuracy is high.

Description

technical field [0001] The invention relates to the statistics of storage volume of storage cabinets in tobacco pharmaceutical processing, in particular to a calculation method and system for storage storage volumes of storage cabinets based on virtual pulses. Background technique [0002] In the current tobacco industry, storage cabinets are the most common storage equipment. The state of the storage cabinet plays a link between different batches of production. Since the state of the storage cabinet is generated in the discharge section of the storage cabinet, the discharge of the storage cabinet is very important for the change of the storage cabinet state. When it comes to the discharge of the storage cabinet, the acquisition of the bottom belt pulse of the storage cabinet and its data accuracy are the most important. The total number of bottom belt pulses and the current output pulse number directly determine the current output volume and storage Calculation of material...

AI Technical Summary

Problems solved by technology

[0006] The shortcomings of this method: (1) to install detection components such as proximity switches or encoders on the equipment, it is also necessary to collect pulse signals, which increases the cost, low pulse counting accuracy, and detection components need frequent maintenance. (2). When the encoder is used to collect pulses, the circuit interference and the vibration of the storage cabinet will cause a malfunction signal of the rotary encoder; (3). When the proximity switch is used to collect pulses, since the bottom belt is in a tensioned state when running, When stopping halfway, it may return to the original state, which may lead to false collection of pulses

The above reasons will lead to inaccurate calculation of the output of the storage cabinet

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