Hardware introduction of each system of online automatic checkweigher
Online automatic checkweigher machine is a low-speed, high-precision checkweighing equipment for packaging production lines. It can be integrated with various packaging production lines and conveying systems. It is mainly used to check online whether the weight of products is qualified and whether there are missing parts or products in the packaging. Weight archive, etc. The hardware system is the physical basis of the entire measurement and control system. Kenwei Technology has built and optimized the hardware system according to the functional requirements of the measurement and control system. The hardware of the online automatic checkweigher machine system mainly includes the following parts: computer, signal detection part, signal conditioning circuit, data acquisition card part, control part and actuator and other parts. 1. Computer: The center of data acquisition, data management and control decision-making of the entire measurement and control system. 2. Signal conditioning circuit: Amplify, stimulate, linearize, isolate and filter the signal. 3. Signal detection part: mainly refers to two high-accuracy pressure sensors, which are responsible for real-time conversion of the quality signal of dynamic weighing, and transmit the converted electrical signal to the data acquisition board part. 4. Weighing display controller: It is processed by the computer according to the control setting parameters, and the control result is obtained through a certain control algorithm, and the control result is transmitted to the actuator. The weighing display control instrument can display gross weight, net weight, the last weighing value, the difference between the last weighing value and the set nominal value. It can also display the total number of weighing pieces, the number of underweight pieces, the number of overweight pieces, and the number of qualified products. The checkweigher machine display controller can also deliver a variety of statistical information, and can network useful information to the management computer through the communication interface or print out the report through the printer. 5. Data acquisition card part: including the data acquisition card and its supporting equipment, A/D conversion of the collected data, and transmission to the computer for further analysis and processing; and then the control results output by the computer are converted through D/A, output to the control section. 6. Execution rejection device: According to the packaging form and characteristics of the inspected item, the rejection device can be divided into various methods such as pushing out, tipping and dropping, handling, etc. The executive mechanism performs corresponding actions according to the control results, and promptly removes the packaging that does not meet the quality standards. product.
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