Magnetic rotation speed sensor self-checking device and system and method thereof

A technology of a rotational speed sensor and a self-checking device, which is applied in the sensor field, can solve the problem that the self-checking of the measured object cannot be realized, and achieve the effects of true and credible results, simple and accurate detection, and a wide range of applications.

Inactive Publication Date: 2014-07-30
HUNAN XIANGYI RAILROAD LOCOMOTIVE ELECTRICAL EQUIP
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Problems solved by technology

[0005] (1) In order to perform self-inspection on the magnetic speed sensor in the existing detection system, the object under test must be moved first, and the self-inspection of the object under

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  • Magnetic rotation speed sensor self-checking device and system and method thereof
  • Magnetic rotation speed sensor self-checking device and system and method thereof
  • Magnetic rotation speed sensor self-checking device and system and method thereof

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Embodiment Construction

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] as attached figure 2 to attach Figure 4 As shown, specific embodiments of the magnetic speed sensor self-inspection device, system and method thereof of the present invention are given, and the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] At present, i...

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Abstract

The invention discloses a magnetic rotation speed sensor self-checking device and system and a method thereof. The magnetic rotation speed sensor self-checking device comprises a signal processing unit and a magnetic-sensitive device connected with the signal processing unit, wherein the magnetic-sensitive device is used for sensing an alternating magnetic field produced by an external speed measuring gear rotating with a detected object. The self-checking device further comprises a coil arranged at the opposite upper portion of the magnetic-sensitive device, wherein when the detected object is static, an alternating electrical signal is transmitted to the coil and produces the alternating magnetic field at the opposite upper portion of the magnetic-sensitive device, the alternating magnetic field drives the magnetic-sensitive device to output a speed signal to the signal processing unit and judge whether a magnetic rotation speed sensor is normal or not by detecting the speed signal. The detected object is not required to be moved, the technical problem of self checking on the performance of the magnetic rotation speed sensor under the static-state condition can be solved, and the magnetic rotation speed sensor self-checking device and system and the method are wide in application range and simple and accurate in detection.

Description

technical field [0001] The present invention relates to the field of sensors, in particular to a self-inspection device, system and method of a magnetic speed sensor for calculating the speed and acceleration of a moving object, which can be widely used in train control systems, braking systems, Traction system, automotive ABS system and other systems. Background technique [0002] The magnetic speed sensor is a type of sensor that outputs an electrical signal related to the speed by sensing changes in the magnetic field. It includes, for example, a magnetoelectric speed sensor, a Hall speed sensor, a giant magnetoresistive speed sensor, etc. Magnetic speed sensors are usually used to calculate the speed and acceleration of moving objects and are widely used in various systems such as train control systems, braking systems, traction systems of locomotives, and ABS systems of automobiles. Because such systems are often directly related to safety, if the system can perform se...

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Application Information

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IPC IPC(8): G01P21/00G01P21/02
Inventor 李苏红贺雄李克
Owner HUNAN XIANGYI RAILROAD LOCOMOTIVE ELECTRICAL EQUIP
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