In dual-platform weighing scenarios, dual-display weight indicators require comprehensive optimization of hardware design, signal processing, environmental compensation, and calibration mechanisms to ensure the consistency of weight data from both platforms. The core of this approach lies in eliminating differences caused by mechanical structure, sensor characteristics, and environmental interference between the two platforms, achieving synchronous and stable weighing results.
The symmetry of the hardware design is fundamental to accuracy consistency. Dual-display weight indicators typically use two independent scale platforms and sensor systems, but to ensure data consistency, sensor selection must be strictly matched. For example, the weighing sensors used on both platforms should maintain consistency in range, sensitivity, and temperature coefficient to avoid measurement deviations due to differences in hardware parameters. Simultaneously, the scale platform structure must be symmetrically designed to ensure uniform contact area and pressure distribution when vehicle axles simultaneously pass over both platforms, reducing errors caused by platform deformation or installation tilt.
Signal synchronization acquisition and processing technology is crucial. Dual-display weight indicators use independent signal conditioning circuits to convert the analog signals from the sensors on both platforms into digital signals. During this process, it is essential to ensure that the sampling frequency and phase of the two signals are synchronized to avoid data misalignment during dynamic weighing due to time differences. For example, when a vehicle passes over a weighbridge at high speed, even a slight delay in the acquisition of the two signals can cause deviations in axle weight calculations due to changes in wheel axle position. Therefore, the indicator typically employs high-precision clock synchronization technology to ensure strict alignment of the two signals in the time dimension.
A collaborative compensation mechanism for environmental interference is indispensable. Temperature, humidity, and electromagnetic interference can have different effects on the sensors of the two weighbridges, leading to drift in measured values. The dual display weight indicator uses built-in environmental sensors to monitor parameters such as temperature and humidity in real time and synchronously compensates for the two signals. For example, when the ambient temperature rises, the sensor output may change slightly due to thermal expansion. The indicator uses a temperature compensation algorithm to uniformly correct the data from both weighbridges, ensuring consistency under environmental changes.
The rigor of the calibration and standardization process directly affects accuracy. The dual display weight indicator requires periodic joint calibration of both weighbridges, using standard weights or vehicles of known weight for dynamic calibration. During calibration, it is necessary to ensure that both weighbridges bear the same load simultaneously, and the zero point and gain parameters are adjusted through the indicator's calibration software to make the two displayed values converge. Furthermore, to address potential nonlinear errors in dual-platform weighing, the indicator needs to support segmented calibration, independently correcting for different weight ranges to further improve accuracy.
Optimization of the dynamic weighing algorithm is crucial for ensuring accuracy. As a vehicle passes over the weighing platform, axle pressure changes over time. The dual-display weight indicator needs to use dynamic filtering algorithms to eliminate vibration and impact interference. For example, using moving average or Kalman filtering techniques to smooth the instantaneous data collected from both platforms while maintaining a rapid response to axle weight changes. Additionally, to address potential cross-interference from the dual platforms, the indicator needs to identify and suppress abnormal signals through algorithms, ensuring that the two data streams are independent and accurate.
Fault diagnosis and fault tolerance mechanisms enhance system reliability. The dual-display weight indicator needs to be able to monitor the sensor status of both platforms in real time. When one platform experiences a signal abnormality, the system can automatically switch to single-platform mode or prompt for maintenance, avoiding erroneous data output. Simultaneously, through redundant design, such as dual-channel data backup, it ensures that if one channel fails, the other channel can still provide reliable weighing results, maintaining overall accuracy consistency.
