The mixing and feeding equipment adopts the regulating valve or changes the pressure of the issuing tank for dosage, and PID adjusts the weight value to the pressure of the dosage tank or the opening of the regulating valve. The standard proportional function and the proportional calculation of the weighing system are used to ensure the stability of the weighing performance. The given value is multiplied by a multiplier to calculate the target value of the dosage weight, which is given remotely as a control quantity, and the reciprocal is taken to calculate the weight of the discharged material by a multiplier, thus realizing interactive dosage.

The weighing of high-piled oil drum truck consists of an inverted drum truck, two high-precision weighing sensors and weighing display instruments. The electronic scale for oil drums is an integrated equipment specially designed for drum handling, stacking and weighing, which can realize the electric lifting and dumping of drum goods. The oil drums are clamped in the equipment with weighing clamps, and the load is transmitted to the weighing sensor through the scale body, and the weighing sensor converts the weight into corresponding mV-level electrical signals. The signal is pre-amplified, filtered and A/D converted. After the signal is processed by microprocessor (single chip microcomputer), the digital display part directly displays the weighing value.

The Reaction weighing and loading device is sent to the weighing area through the screw, and the weighing sensor outputs a voltage signal according to the pressure of the material, which is amplified to output a metering level signal, which is proportional to the weight of the material. Then the signal is sent to the upper computer interface, and converted into a weight signal, the weight value is displayed on the current PC, and is sent to the PLC, which will compare and calculate the given value of the proportioning set by the PC. This control quantity is transmitted to the frequency converter and the output value of the frequency converter is changed to complete the control of the speed. Adjust the dosage to the same as the set value to complete the dosing process.

Cloud computing Explosion-proof electronic scales integrated application data weighing management system, the use of mobile Internet, Internet of Things, big data and cloud computing and other related technologies and the establishment of the cloud service platform serving the whole process of production and sales. To create the whole process from product production, manufacturing environment, logistics and transportation, terminal sales and other regulatory embodiment. Adopting modular real-time monitoring instrument hardware and utilizing the powerful function of Programmable Logic Controller (PLC), it realizes full-automatic control of the production process of fluid back-channel packaging, "Weighing and measuring system monitoring", "Automatic control of stacking unit", "Recording and storing of production data", and "Networking with the upper computer for 485 or TCPIP communication and data transmission".

Volume Mixing and feeding system uncertainties and internal and external interference as a whole for processing, the use of digital technology to compare and analyze it with the traditional PID controller, weighing controller to calculate the actual amount of feed, when the actual amount of feed to meet the feed set value to close the feed valve, from the whole process of action can be seen, the valve closure lag will inevitably lead to feeding error, the value of the error is about the lag time and the closure of the instantaneous volumetric flow rate, The error value is the product of lag time and instantaneous volume flow rate and fluid density at the time of closing, in which the lag time is all the time between the output of the valve closing signal from the weighing controller and the shut-off valve shutting down, "i.e., including the lag time of the relay's action and the shut-off valve's action lag time.

The Vibration automatic mixing equipment adopts decentralized control and centralized management control mode, and the three-level structure realizes the two-way coordination of process demand and energy saving of the batching system. Decentralized dust point local realization of vibrating screen, hopper and other stations of the branch adsorption point automatically open and close, effectively reducing the dosage of non-dusting ventilation requirements; the central controller to achieve the dust point of the centralized monitoring of the working conditions, according to the operation of the workplace to calculate the real-time demand for the kettle dust dosage of the air volume. Thus the frequency control value of frequency conversion operation is given, and the frequency adjustment instruction of 4~20mA is transmitted to the frequency converter of dust removal fan to realize the continuous variable condition adjustment of dust removal air volume.

The Speed regulation automatic feeding system picks up the weight through the pressure weighing module, amplifies and filters the picked up weight signal, enters into the A/D converter for analog-to-digital conversion, and then sends it to the microcontroller to analyze and process the signal, and outputs the result to the industrial control through the RS232C communication serial port, and at the same time, makes the corresponding reaction and performs the corresponding operation according to the result of the signal.

Touch Screen Explosion-proof electronic scale has man-machine interaction, communication, display and storage, printing and other functions, and has data, graphic display, status monitoring, data input, information storage and other functional screens related to operations. Real-time process data monitoring, simulated display of process flow, real-time data record review, operator authority setting, process parameter setting, event alarm setting during operation and manual and automatic control switching. Monitoring system in the field control weighing instrument real-time display flow, load, cumulative value, temperature and so on. Temperature indication through the field temperature display instrument, pressure indication through the field pressure and motor through the field display instrument remote to the central control room centralized display.

High temperature .Automatic mixing system through the programmable controller touch screen automatic control program, can automatically mix a variety of raw materials in different order and temperature, to achieve the ideal product manufacturing automatic mixing equipment. The main tasks are initial data input, material tracking, process parameter setting calculation, data recording and report, human-machine dialogue processing, data communication, analog resin model, historical data processing, application system startup, event monitoring, etc. The process control automation level computer system reserves the communication interface with the continuous casting and computer system.