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Methods and devices used to synchronize segmented counter with accurate position sensors

A segmented counter and sensor technology, applied to devices using electric/magnetic methods, using electric/magnetic devices to transfer sensing components, using electric devices, etc., can solve problems such as inaccurate and inaccurate counting results

Active Publication Date: 2017-10-17
AVAGO TECH INT SALES PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this correction can only be performed after the generation of the second count pulse following the missing count pulse
If the detected object stops moving before triggering this second count pulse, such correction will not be possible and the count result will still be inaccurate or imprecise

Method used

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  • Methods and devices used to synchronize segmented counter with accurate position sensors
  • Methods and devices used to synchronize segmented counter with accurate position sensors
  • Methods and devices used to synchronize segmented counter with accurate position sensors

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Embodiment Construction

[0057] In order to make the understanding of the present invention easier, figure 1 shows as Figure 4 Motion of a segmented counter with two Wiegand sensors shown (i.e., version 1 without direction reversal and version 2 with direction reversal), where on the time axis t from time T 1 to T x Shown is the change in the position of the permanent magnet EM, which is connected to the motion of the rotating body to be detected and includes N and S poles. As is known, a Wiegand sensor comprises an induction coil SP, from which a signal in the form of a voltage signal Ua / Ub can be picked up.

[0058] figure 2 is a schematic diagram of the associated Wiegand sensor signals Ua and Ub versus time t for motion version 1 without direction reversal (no glitches) and motion version 2 with direction reversal and glitches. Furthermore, it shows the associated signals A and B evaluating the count over time t and producing the count value. Two versions of ordinary counting are shown, whe...

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PUM

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Abstract

An implementation that uses the final magnetization direction of the Wiegand line of the segment counter as part of the information for absolute synchronization of the count value and position value will contain the count value of the segment counter of the Wiegand sensor and the position value of the precise position sensor A method for error-free conversion into a total position value and a device for carrying out the method.

Description

technical field [0001] The invention relates to a method for synchronizing a segmented counter with at least one impulse line (Wigand line) sensor with a precise position sensor for the absolute detection of translational and / or rotational motion of an object, and also to performing Apparatus for the method. Background technique [0002] Pulse and Wiegand wires are ferromagnetic elements each having an induction coil surrounding them when used as a Wiegand sensor. When an external force is applied to initially oriented irregular magnetic regions (called chips or Weiss domains) in a ferromagnetic material, the magnetic regions will align to form single domains. Application of an external magnetic field of defined direction and magnitude will cause an inversion of this range, thereby generating a voltage pulse in the induction coil that can be picked up as an output signal. The kinetic energy of flipping the aligned unit magnets in a continuous wave fashion in the direction ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/02G01B7/30G01D5/244
CPCG01P3/4815G01P3/54G01D5/14
Inventor W·梅纳特T·泰尔
Owner AVAGO TECH INT SALES PTE LTD