An inductive power supply device and a method for measuring rotational speed for realizing simultaneous rotational speed measurement
A technology of inductive power supply and speed measurement, which is applied to circuit devices, devices using electric/magnetic methods, electrical components, etc., and can solve the problem of large fluctuations in the voltage amplitude at the receiving end, heating of the rectifier device at the receiving end, and failure of the system to supply power normally and other problems, to achieve the effect of overcoming metal eddy current, convenient installation and debugging, and convenient installation and debugging
Active Publication Date: 2020-12-25
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
The structure has no resistance to the lateral displacement of the power supply system. When the lateral displacement occurs, the system may not be able to supply power normally, and the mechanical vibration resistance of the system is weak.
At the same time, although the double-coil structure can achieve stable power supply, the voltage amplitude received by the receiving end fluctuates greatly, and the energy loss in the process of AC-DC rectification at the receiving end is relatively large, and the rectifier device at the receiving end generates more heat, which affects The life of the system may cause safety accidents due to heat damage
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[0042] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0043] Such as Figure 1 to Figure 5 As shown, it is a schematic diagram of some embodiments of the inductive power supply device for realizing simultaneous rotational speed measurement in the present invention.
[0044] Such as figure 1 with figure 2 As shown, in the preferred embodiment shown in this figure, the inductive power supply device for simultaneous speed measurement is mainly used for the speed measurement of the rotating shaft, and the device includes an inverter unit, a flexible m...
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The invention provides an inductive power supply device for realizing simultaneous speed measurement and a speed measurement method. The device includes an inverter unit, a transmitting coil, a receiving coil, an AC-DC rectifier module and a speed signal extraction module, wherein the transmitting coil is a rectangular coil, the speed signal extraction module is electrically connected with the AC-DC rectifier module to extract and analyze an induced voltage outputted by the AC-DC rectifier module, and extraction and analysis of the induced voltage by the speed signal extraction module means that the induced voltage is sequentially subjected to envelope detection, hysteresis comparison and signal conditioning to obtain square waves reflecting the fluctuation frequency of the induced voltage. The device is advantaged in that a wireless supply problem of metal shaft power sources having different shaft diameters is effectively solved while the shaft speed can be simultaneously measured without installing an additional speed sensor, the overall structure is simple and easy to install, which provides an effective method for online monitoring of the shafting power.
Description
technical field [0001] The invention relates to the technical field of inductive power supply, in particular to an inductive power supply device for realizing simultaneous rotational speed measurement and a method for measuring the rotational speed of a rotating shaft using the inductive power supply device. Background technique [0002] Inductive power supply technology has received more and more attention in many industrial applications due to its safety, convenience, and environmental protection. This technology involves power electronics technology, magnetic coupling technology, automatic control theory, signal modulation and demodulation and many other aspects. In recent years, inductive power supply has become an important power supply method for the measurement system of rotating devices, and the exploration of new functions of the inductive power supply structure is also the current research direction. [0003] In the inductively coupled wireless power transfer syst...
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IPC IPC(8): H02J50/10G01P3/48
CPCG01P3/48H02J50/10
Inventor 吉小军高浚凯王天泽
Owner SHANGHAI JIAOTONG UNIV