User data management system based on cloud computing

Abstract

The invention discloses a user data management system based on cloud computing. The user data management system comprises a frequency acquisition circuit 1, a frequency acquisition circuit 2, a peak feedback circuit, a frequency selection detection circuit and an operational amplifier limiting circuit, the frequency acquisition circuit 1 acquires the modulated analog signal frequency in the cloudserver; wherein the frequency acquisition circuit 2 acquires analog signal frequency before demodulation of the control terminal, the peak feedback circuit uses an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to form a peak detection circuit to extract a peak of an output signal of the frequency acquisition circuit 1, The frequency selection detection circuituses a resistor T11-resistor R15 and a capacitor C3-capacitor C5 to form a dual-T frequency selective amplification circuit to select and amplify signals.. Meanwhile, an operational amplifier AR3, anoperational amplifier AR4, a diode D7 and a diode D8 are used for forming a peak value circuit to extract peak value signals, and an operational amplifier limiting circuit is used for forming a limiting circuit through a diode D9 and a diode D10 to limit the amplitude of the signals and then outputting the signals to serve as correction signals of analog signals before demodulation of a control terminal.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to a user data management system based on cloud computing. Background technique [0002] At present, the user data management system based on cloud computing mainly includes a control terminal, a cloud server, a signal transmission module, and a data acquisition module. The data acquisition module collects user data information and sends it to the cloud server through the signal transmission module. After the signal is sent to the control terminal through the signal transmission module, due to the attenuation and interference of the signal during the long-distance transmission process, there will be a difference in frequency between the modulated signal sent by the cloud server and the analog signal before demodulation received by the control terminal. Error, when the error is small, it can be ignored, but when the error is large, it will directly lead to the distortion of the sign...

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Problems solved by technology

[0002] At present, the user data management system based on cloud computing mainly includes a control terminal, a cloud server, a signal transmission module, and a data acquisition module. The data acquisition module collects user data information and sends it to the cloud server through the signal transmission module. After the signal is sent to the control terminal through the signal transmission module, due to the attenuation and interference of the signal during the long-distance transmission process, there will be a difference in frequency between the modulated signal sent by the cloud server and the analog signal before demodulation received by the control terminal. Error, when the error is small, it can be ignored, but when the error is large, it will directly lead to the distortion of the signal received by the control terminal, which will seriously affect the performance of the user data management system based on cloud computing

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