Changzhou Finsin Tech Co., Ltd. is a comprehensive technology enterprise that integrates research and development, design, construction, and operation. The company specializes in industrial automation (DCS, SIS, GDS), safety management information platform, industrial Internet platform, digital twin building, robot inspection system and other businesses. Today, let me introduce you to ourMulti channel weighing scale.
Multi channel weighing scale is an efficient and accurate weighing device commonly used in various production fields. Its working principle can be divided into the following two parts:
1. Signal acquisition and processing
2. Result output and display
The implementation principles of these two parts will be detailed below.
1、 Signal acquisition and processing
Multi channel weighing scales need to measure the weight of multiple items simultaneously, so multiple sensors need to be designed to collect signals, process these signals, and output a comprehensive result.
Sensor selection
The selection of sensors is crucial in the design of multi-channel weighing scales. Appropriate sensors can improve measurement accuracy and reduce measurement errors.
There are several commonly used sensors, including:
1. Resistance sensor: It measures the weight of an object by detecting the strain it produces.
2. Pressure sensor: It measures the weight of an object by detecting the pressure applied to the sensor.
3. Oscillatory sensor: It measures the weight of an object by detecting changes in its oscillation frequency.
signal processing
The signals collected by sensors need to be processed to ensure the accuracy of the measurement results. Usually, the signal processing flow is as follows:
1. Collect sensor signals
2. Amplify and filter the signal
3. Digitize the signal conversion
4. Calibrate and compensate for signals
In the process of signal processing, it is also necessary to pay attention to the following issues:
1. Sampling rate: Choosing an appropriate sampling rate can ensure signal accuracy.
2. Conversion accuracy: Choosing a sufficiently high conversion accuracy can ensure small errors within a large measurement range.
2、 Result output and display
After signal acquisition and processing, the multi-channel weighing scale needs to output and display the results.
serial communication
Multi channel weighing scales can transmit measurement results to computers or other devices through serial communication for further processing.
Serial communication usually includes the following aspects:
1. Choose communication protocol: Common protocols include RS232 and RS485.
2. Encode data into a character stream: ASCII or binary encoding can be used.
3. Sending data to the target device: Sending data can be done using a serial port or USB port.
monitor
The multi-channel weighing scale also requires a display for displaying measurement results and other related information. The monitor can choose between LED or LCD screens for displaying numerical or textual content.