Speed sensor and speed-measuring system of traction motor rotor
A speed sensor and traction motor technology, which is applied in the field of speed sensor and traction motor rotor speed measurement system, can solve the problem that the speed sensor cannot be adapted to the installation size requirements of locomotive traction motors, and achieves the effect of simple and reliable structure and improved induction sensitivity.
Active Publication Date: 2015-07-08
湖南联诚电气科技有限公司
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Problems solved by technology
[0004] The invention solves the technical problem that the speed sensor in the prior art cannot be applied to the installation size requirements of the locomotive traction motor
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[0021] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0022] Such as figure 2 As shown, the present invention provides a speed sensor, including a probe assembly, an elbow housing 5 and a transmission cable 6 . The probe assembly includes a printed circuit board 3 , a positioning part 2 and two Hall elements 1 . One end of the positioning member 2 is engaged with the printed circuit board 3 through the engagement groove, and the other end is engaged with the two Hall elements 1 through the engagement hole. The positioning member 2 is provided with through holes, and the metal pins of the two Hall components 1 pass throug...
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The invention provides a speed sensor comprising a probe assembly, a bent head shell and a transmission cable. The probe assembly comprises a printed circuit board, a positioning piece and two Hall elements; the bent head shell comprises a shell head part with a bent structure, and a shell tail sleeve; the probe assembly is mounted at the shell head part and the transmission cable is arranged in the bent head shell; and one end of the transmission cable is welded with the printed circuit board of the probe assembly and the other end of the transmission cable extends to the outside of the bent head shell. The invention further provides a speed-measuring system of a traction motor rotor using the speed sensor. The speed sensor disclosed by the invention has a simple and reliable structure and a contour dimension of the speed sensor can meet the requirements of an installation dimension of a traction motor of a locomotive; and the speed-measuring system of the traction motor rotor using the speed sensor has higher induction sensitivity.
Description
technical field [0001] The invention belongs to the field of speed measurement of traction motor rotors, in particular to a speed sensor and a traction motor rotor speed measurement system. Background technique [0002] On a rail vehicle, the control of the vehicle power system largely depends on the accuracy and reliability of the speed signal it collects, and the speed signal collected includes the current speed value and the variation of the speed. In locomotive traction control, wheel slip protection, train control, and car door control, the collection of speed signals is involved, which is generally completed by many speed sensors. [0003] The most commonly used speed sensor type is the Hall-type dual-channel speed sensor. Its principle is: the differential speed sensor and the gear are suitable for generating two-way displacement square wave signals, and the pulse frequency generated at the same time is proportional to the rotation speed of the gear. Its sensing elem...
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IPC IPC(8): G01P3/42
Inventor 张赟陈明袁乐
Owner 湖南联诚电气科技有限公司