Rotary peed-measuring and frequency outputting device
A technology of frequency output and rotational speed measurement, applied in measuring devices, linear/angular velocity measurement, velocity/acceleration/impact measurement, etc., to achieve the effect of increasing large-capacity rotational speed data storage function, increasing instantaneous rotational speed test, and convenient operation
Inactive Publication Date: 2010-07-28
DALIAN UNIV OF TECH
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At the same time, in many work sites, it is impossible to communicate with the computer, and the data can only be recorded manually, so the automatic recording and storage of large quantities of instantaneous speed data cannot be realized;
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[0018] A rotational speed measurement and frequency output device, which mainly includes a rotational speed signal processing circuit 6, a rotational speed signal frequency conversion output circuit 1, a parameter setting input circuit 5, a rotational speed and parameter display circuit 4, an instantaneous rotational speed data storage circuit 2, and a reset and oscillation circuit 3 and the control unit 7, and each circuit is electrically connected.
[0019] figure 2 The rotational speed signal processing circuit 6 shown is composed of a coupling circuit, a filter circuit, a protection circuit, an amplification circuit, a comparison shaping circuit and an optocoupler circuit. The signal passes through the coupling capacitor EZ1, and then passes through the limiting circuit composed of DZ1 and DZ2 diodes to protect the subsequent circuit, and the voltage is limited within the voltage drop range of the diode; the limiting signal passes through the amplification circuit compose...
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The invention relates to a tachometric survey and frequency output device, belonging to the technical field of instruments and meters. The device mainly comprises a rotating speed signal processing circuit, a rotating speed signal frequency conversion output circuit, a parameter setting input circuit, a rotating speed and parameter display circuit, an instantaneous rotating speed data storage circuit and a control unit; all the circuits are electrically connected with each other, and an Atmega128L microcontroller with high performance and low power consumption is used for measuring, displaying and storing the rotating speed and outputting a frequency conversion signal. The device not only has the basic function of a common revolution meter, but also is added with the function that the rotating signal is output with frequency conversion, meets the requirement that different frequency rotating speed signals are needed under the same rotating speed signal, thus reducing the hardware costand having convenient operation; meanwhile, the functions of instantaneous rotating speed measurement and high-capacity rotating speed data storage, thus being convenient to analyze the instantaneousdata.
Description
technical field [0001] The invention relates to a rotational speed measurement and frequency output device, which belongs to the technical field of instruments and meters. Background technique [0002] At present, the speed test device mainly completes the speed measurement and voltage signal output, and at the same time, the data exchange between the measuring device and the computer can be realized according to a certain communication protocol. However, the current speed test device only provides processing of the speed input signal and voltage signal output, but does not consider the frequency conversion output processing of the speed signal, which cannot meet the requirements of devices that require different speed frequency signals under the same input speed signal. For example, in most speed governor test benches, a magnetoelectric sensor is used to measure the speed, and the signal plate has 60 teeth, so the number of pulses output per revolution is 60, but some gove...
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IPC IPC(8): G01P3/481
Inventor 孙培岩满长忠唐运榜
Owner DALIAN UNIV OF TECH