The track-type Electronic scale mainly consists of a scale body system composed of the weighing module and connecting parts, an optical sensor-assisted positioning system, a wireless weighing instrument, a scale platform, a wireless bridge, and a computer weighing management system. The weighing module is installed on the scale platform structure on the track, and it can separately measure the weights of coal slime and bituminous coal. Then, the operator can accurately operate and blend according to the requirements of the managers based on the weights of each coal type. At the same time, the confirmed weight signals are sent to the computer weighing management system through the wireless bridge for display, recording, and cumulative calculation by shift and day. Managers can query the accurate data from the historical records and conduct analysis. Then, they can adjust the blending ratio of each coal type. The track-type weighing module converts the weight signals into corresponding mv analog signals, which are then wirelessly sent to the wireless weighing instrument after tuning and displayed. After the operator manually confirms the coal type, the instrument automatically transmits the signal through the wireless bridge to the computer weighing management system for display. At the same time, the cumulative calculation is carried out separately by shift and day for each coal type. Managers can observe the system data in real time and view the historical record data. When there are signal or network abnormalities, the wireless weighing instrument and the computer weighing management system will give an alarm to remind the operator. This effectively realizes the integration of weighing management. At the same time, the optical sensor and sound-light alarm devices are used to assist the manual positioning, improving the operator's work efficiency and reducing labor intensity.

The small vehicle electronic scale first installs the track-type weighing device on the track, starting from the upper part of the discharge point and reaching 4 meters above the top of the small vehicle track. Four sections are cut according to the wheel spacing of the small vehicle, and the Weighing modules are installed respectively. Then, the excitation and signal lines of the four sensors are connected to the dedicated junction box, and the weight signals are sent to the desktop instrument in the operator's room through the wireless transmitting device for display. This makes it convenient for the operator to control and calculate the blending amount of coal slime. Installation of the optical sensor-assisted positioning device. When the small vehicle wheel moves to the central area of the four weighing modules, the deviation from the center point does not exceed ±2 cm. Record this point as the reference point for the optical sensor-assisted positioning device. Then, optical detection sensors are installed simultaneously on the side of the small vehicle at positions that are not easily hit by the small vehicle and meet the requirements. Connect the cables to the switch indicator light in the operator's room. When the small vehicle scale reaches this position, the indicator light is on, and it goes off when it leaves. The high-precision position detection and fast response speed of the optical sensor effectively solve the problem of difficult manual positioning. Installation of the wireless bridge device. The mechanical system of the scale mainly consists of the main vehicle and the small vehicle. The main vehicle can move back and forth along the main vehicle track, and the small vehicle moves back and forth along the small vehicle track. The only connection between the track and the ground is the power supply part, and it is connected by a single-pole combined sliding contact line. In view of this situation, it is decided to use the wireless bridge to realize the signal transmission function between the wireless instrument and the computer weighing management system.