The Formula electronic scale comes with an RS-485 (MODBUS-RTU) interface, while the serial communication port of the PC is an RS-232C interface, and the two need to communicate with each other through the SC-09 adapter cable. Electronic scales use the RS-232C standard to transmit signals using the voltage difference between the signal line and the common ground, a unidirectional transmission method; the RS-485 standard uses the voltage difference between the signals of the transmission line to transmit, a differential transmission method. the SC-09 cable realizes the conversion between these two different signal transmission methods.

The electric stacker uses the RFID tag to have a unique number in the world, organically combines the long-distance card reader with the weighing system, installs the long-distance card reader on the forklift, and sends it to the control panel through RS232 or TCP/IP. The tag ID number obtained by the control panel is associated with the weighed weight information and sent to the server, and the output port controls the signal and signal lamp of audible and visual alarm. Each forklift truck loaded with materials to be weighed is fixed with an RFID electronic tag on the windshield, and its ID is stored in the central database as the vehicle ID number to prevent theft.

The Reaction automatic feeding system (e.g. dosing container with weighing device) reads the weight value at regular intervals, and the difference between the two weights is used to calculate the reduction per time unit (instantaneous flow rate). The weighing controller compares the actual measured value with the preset flow rate value, and at the same time controls the rotational speed of the auger feeder to regulate the feeding volume. When the weight of the material in the hopper reaches the minimum set value, the charging valve will be opened automatically to carry out the periodic charging operation. In order to ensure the correctness of the weighing results, an appropriate filter can be selected to filter the weighing signals during the measurement process.

The structure of the Jacket weighing and mixing equipment consists of a high level bin, a valve, a vibrating motor, a weighing module and a reactor, as well as a set of position detection devices. During the charging waiting phase, the mobile drum is parked on the electronic scale and at the position of the reactor charging port waiting for control commands. According to the charging parameters entered by the operator, the silo valve opens to discharge the material. The amount of feed is continuously collected through the electronic scale, and the valve is closed when it reaches the dosing set value of one advance, which can be calculated by the time of the valve or obtained by experience. When the added material reaches the specified weight, the valve is automatically closed.

The pre-set dosing plan of the Condensation weighing and mixing equipment automatically weighs various materials, automatically controls each link of dosing, and completes the dosing process. According to the amount of feeding, the speed of the motor is controlled. When the feeding value is close to the set value, the low-speed feeding mode is adopted. Due to the retention of materials in the air between the feeding port and the feeding tray, the motor stops rotating when the control lead is reached. When the actual batching process reaches the control lead amount, due to the difference in material density, the quality of the air material retained after the motor stops rotating is different, and the lead amount of the motor stop is set according to the actual operating condition.

Weighing mixing equipment through the organic combination of computer technology and traditional relay control system, in the batting process, PLC is mainly responsible for receiving external switching signals, in order to judge the current system operating state, and output a variety of control signals, control contactor, relay, solenoid valve and other components for the corresponding action. According to the specific batching process, at the beginning of the batching, the motor runs normally, the feeding system is fed at a high speed, and the PLC point control mode is used when the weight of the material is close to the target value, so as to ensure the requirements of the measurement accuracy of the material.

Cylinder scales for liquefied petroleum gas enterprises to design and manufacture a set of fully automated multi-species mixing dosage weighing of three integrated production lines. The dynamic weighing scale, through the CC-Link fieldbus, together with PLC, HMI/IPC seamlessly form a three-in-one metering and dosage system, in which the industrial computer is connected to the factory ERP/MIS through HUB and Ethernet TCP/IP. The whole dosage process is carried out in strict accordance with the selected recipe ratio and flow, and has multi-level alarm records, completes the mixing of different raw materials to feed and logistic control, realizes the integration of management and control, and optimizes the performance and efficiency of process control. The integration of management and control optimizes the performance and efficiency of process control.

The folding electronic floor scale mainly consists of two parts: the scale body and the weighing control system. The scale body part is composed of a storage bin, feeding and loading, weighing hopper, etc. The floor scale control system is composed of a scale platform, weighing sensors, weighing instruments and control actuating elements, equipped with photoelectric position sensors and solenoid valve drive cylinders, etc. Its function is to detect the weight of moving items in real time. By comparing the directly set target value with the actual measured value, when the weighing controller of each floor scale production line is set up and the electronic scale is started to run, It can achieve automatic weighing, measurement and control of materials.

Weighing and mixing equipment to achieve the main and auxiliary batching machine two-stage control, each screw is driven by a motor; Two material level sensors; A speed sensor; A weighing sensor and a frequency converter. The switching quantity controls the running state of the motor, the input of the control end of the inverter is determined by the digital input of the PLC, and the high-frequency pulse is transferred by the inverter and transmitted to the spiral drive motor. The level sensor begins to detect whether the hopper contains material, and the speed of the motor is monitored by the speed sensor.