The overall composition of the dosage system is that the host and the slaves (including the virtual host) are connected via serial bus, and the virtual host and the slaves are also connected via serial bus, constituting the master-slave microcomputer dosage of the dual-bus structure, the host realizes the control of the dosage through the serial president, and the virtual host realizes the control of the dosage through the serial bus after obtaining the right to control the system, and the host mainly completes the control of the process, real-time display and alarm, and provides data storage. The host mainly accomplishes the functions of process control, real-time working condition display and alarm, data storage, report printing, recipe optimization and management consulting.

The automatic batching system is developed with the central processing system as the core, each weighing controller controls one weighing scale, which directly controls the batching process and accomplishes the tasks of data collection, processing, storage and display, fault detection and alarm, data communication, etc. The automatic batching system can be used for the real-time display of the batching process and the data communication. Real-time display of the dosage process, data storage and report printing, and directly involved in the control of the feeding and discharging action of each scale. The control system is a multi-channel data acquisition unit, installed in the production site, responsible for the data acquisition and local display of the weighing signals and liquid level signals, and sends the acquired data to the host computer for processing through the serial bus.

Dosage systems utilize dosage control in various areas such as in-line cleaning and sterilizing, and process manufacturing. It is also possible to monitor the system, track parameters, signal alarms, record data, and chain control. Can change the dosage ratio and formula, can be adjusted through the programming, quickly change the device of the material drop. From the industrial control machine, the formula is sent to the PLC, the weigher communicates with the PLC in real time through the field bus, and the PLC controls the automatic weighing of the whole formula, and by monitoring the whole automatic weighing process in real time, it realizes the intelligentization of the automatic weighing.

The automatic dosage system realizes the automation of weighing and dosage, the weighing and mixing of each powder is realized by the programmable controller (PLC), the upper computer is mainly used for the formula management, man-machine dialogue and the storage and printing of weighing data. Using the upper computer and weighing instrument communication program, weighing data collection, and data stored in the Access database. It facilitates the querying and tracing function of the data, which not only facilitates the supervision of the weighing process, but also restricts the operation of the workers. v

The weighing and unloading system adds the required materials into the mixing bin in turn according to a certain ratio. At the same time, PLC monitors the pulse signal sent by the material level meter to determine the position of the material in the bin, so as to control the on-off of the charging valve; After the feeding is completed, according to the preset mixing delay time, the PLC starts the mixing motor to ensure that the material is fully stirred in the mixing bin to complete the mixing operation; Then enter the discharge and pressing stage, the PLC controls the discharge valve action, the material is output from the mixing bin, pressed into the storage tank, complete a cycle of automatic batching control process.

The weighing process of the weighing module of the batching control system is completed by the FTA decomposition (including the speed and speed conversion of materials). The storage and call of the formula is directly entered into SIWAREX FTA by the weight signal (mV analog signal) given by the weighing module. The control of the charging sequence of the dosing system, the generation and management of reports and alarms, etc., rely on the CPU of FX2N. The determined action signal is given to the PLC I/O card and then the PLC I/O controls the electrical equipment.

The batching control system includes screw conveyor, storage bin, gate, cutting device, weighing body, support, electrical control device, etc. The feeding device is fast and slow two-stage feeding mode. The PLC sends a signal to the cylinder to drive the plunging plate to work, and the material in the hopper flows into the weighing bucket, and the weighing module above the weighing bucket sends a signal to the PLC, so as to control the operation of the cylinder. When the weight is approaching the required weight, the PCL sends a signal to the cylinder with plunging plate, so as to slow down the discharge speed. When the value reaches the weighing module, the PLC sends a signal to the cylinder and the plunging plate seals the material port.

The dosing system is usually used for batch mixing of more than two kinds of raw materials in proportion, and the program control makes the batch mixing do continuous action, so as to achieve the uniformity of the mixing ratio performance. The human-machine interface is used to input the corresponding proportioning parameters, and the signal of each sensor is transmitted to the weighing instrument through the weighing module, and then the signal is converted by the weighing instrument and connected to the central controller, which, in combination with the set formula and according to the real-time data of each weighing unit, controls the dosing time and amount of dosing of each kind of material, and all the raw materials enter into the horizontal mixing machine after the weighing is finished.

Weighing and batching system is composed of computer and PLC, weighing instrument, weighing module and signal distributor, PLC is used to configure switching control such as starting and stopping and opening and closing of the warehouse door, detecting the state of the warehouse door and running configuration, and carrying out system interlocking of the batching system. PLC and weighing control instrument are connected by I/O collar, and directly join in the batching control. PLC and weighing control instrument are connected by I/O, directly joining the batching control. It has the results of weighing signal collection, fast and slow adding control and self-tuning of overshoot, etc. It can modify the input and parameters of the material side. Each scale is equipped with three weighing modules, whose signals are fed into the distributor, connected in parallel to the bridge wall, and the voltage is divided and sent to the weighing instrument.