Device for measuring solid moment of inertia

Abstract

The invention relates to a device for measuring solid moment of inertia, which comprises a mechanical part and a data collecting, transmitting and receiving module, and is characterized in that: a singlechip on a circuit board is used for timing, receiving times of a shade sheet passing through an photoelectrical door and time data which are transmitted from the photoelectrical door, transmitting the data in real time, and displaying the data on a display connected with the singlechip; in addition, the circuit board embedded with the singlechip is provided with a 'send' button and a bluetooth transmitting module; the bluetooth transmitting module is used for transmitting a data packet comprising student information and the data to a bluetooth receiving module on a computer through pressing the button; and the bluetooth receiving module is used for processing the data in real time after receiving the data, and storing the processed data on the computer.

Description

technical field [0001] The invention relates to a university physics experiment device, mainly relates to a system for collecting, transmitting and real-time processing of rigid body moment of inertia experiment data, and belongs to the field of university physics experiment instruments. Background technique [0002] As we all know, the moment of inertia of objects with uniform mass distribution and regular shape can be obtained by calculation, while the moment of inertia of objects with uneven mass distribution and irregular shape must be measured by special measuring devices. [0003] At present, the traditional rigid body moment of inertia experiment, taking the patent CN86106881 as an example, its experimental equipment includes: a supporting platform, a tower wheel, a rotating shaft, a base, a pulley, a weight with a thin line, a digital millisecond meter, and a digital millisecond meter. photogate. During the experiment, students need to manually press the button on t...

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Problems solved by technology

[0031] There are three problems in this kind of experimental process. First, it is not easy to understand the students' experimental mastery. As we all know, plagiarism among students is common. If students plagiarize other people's experimental data after the experiment, and use it Submitting the experiment report, the experiment teacher can't find out in time, because the student's data recording process is completely independent of the teacher, the result is that the teacher can't have a good understanding of the student's experimental mastery, which leads to the lack of confidence in teaching. There are deviations in quality assessment; second, students spend time and effort in the process of data recording, and the data are separated from each other, which is prone to errors; third, experimental teachers rely on experience to process student data, which inevitably occurs during the scoring process. deviation

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