Hot-redundant magnetic-electric rotational-speed sensor

A speed sensor and magnetoelectric technology, applied in the field of testing control devices, can solve problems such as the reduction of reliability and safety of ships, and achieve the effect of improving reliability

Inactive Publication Date: 2013-01-02
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the failure of the sensor causes the power system to stall or be damaged, the reliability and safety of the ship will be greatly reduced

Method used

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  • Hot-redundant magnetic-electric rotational-speed sensor
  • Hot-redundant magnetic-electric rotational-speed sensor
  • Hot-redundant magnetic-electric rotational-speed sensor

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Embodiment Construction

[0018] Preferred embodiments of the present invention are given below and described in conjunction with the accompanying drawings.

[0019] It mainly consists of the following parts: a permanent magnet ( figure 1 Middle 1), two sets of independent induction coils ( figure 1 2 and 3), the signal processing circuit ( figure 1 4), the sensor housing ( figure 1 Middle 5). It is characterized in that: when the measured shaft figure 2 Middle (6) drives speed measuring gear figure 2 When the center (8) rotates, the gap between the speed measuring gear and the sensor figure 2 (7) will produce periodic changes, which will lead to periodic changes in the magnetic flux passing through two sets of independent coils, so that periodic voltage changes will be generated in the coils, and this change rule is similar to a sine wave. Because this redundant sensor has two sets of independent induction coils, these two sets of identical induction coils are wound on the permanent magnet in...

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Abstract

The invention belongs to the field of testing control devices, and particularly relates to a magnetic-electric rotational-speed sensor capable of realizing hot-redundancy of devices. The magnetic-electric rotational-speed sensor comprises a permanent magnet, a first independent induction coil, a second independent induction coil, a signal processing circuit and a sensor shell. The first independent induction coil and the second independent induction coil are wound on the permanent magnet and fix the permanent magnet into the sensor shell, the axis of the permanent magnet is coincided with the central axis of the sensor shell, the two independent induction coils are respectively connected with the signal processing circuit, holes are arranged in centers of two ends of the sensor shell, the end of the sensor shell close to the signal processing circuit is used for leading out a conducting wire, and the other end of the sensor shell is used for receiving detection signals. The magnetic-electric rotational-speed sensor can work normally assuredly even if the optional coil fails, reliability of the magnetic-electric rotational-speed sensor is greatly improved, and reliability of measured objects such as diesel engines, gasoline engines and gas turbines is also improved.

Description

technical field [0001] The invention belongs to the field of test control devices, and in particular relates to a magnetoelectric rotational speed sensor which realizes device thermal redundancy. Background technique [0002] In order to pass the increasingly stringent emission regulations, intelligent electronic control technology has been widely used in vehicle diesel engines and gasoline engines, and marine power is also developing in the direction of intelligent electronic control technology. The realization of this electronic control technology is based on various Accurate acquisition and transmission of sensor signals. The collection of sensor signals is like the eyes and ears of the electronic control system, and the reliability of the sensor determines the reliability of the electronic control system. The magnetoelectric speed sensor is a sensor that uses the principle of electromagnetic induction to convert the change of magnetic flux into the output of induced pot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P3/44
Inventor 宋恩哲阴美梁朱俊俊仪土海张占虎纪常溪孙义况涪洪
Owner HARBIN ENG UNIV
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