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Multi-slewing absolute magnetic encoder capable of reducing standby power consumption

A technology of magnetic encoder and backup power supply, which is applied in the direction of using electric/magnetic devices to transmit sensing components, etc., which can solve the problems of large power consumption, not reaching the optimal state, and the power-off gap cannot be too long.

Inactive Publication Date: 2010-11-03
孙成 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high power consumption of the Hall integrated circuit itself, the operating frequency of the single-chip microcomputer connected to it cannot be too low, and even if the whole system is in the cycle power-off mode, the power-off interval cannot be too long, so the overall power consumption Still big, not optimal

Method used

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  • Multi-slewing absolute magnetic encoder capable of reducing standby power consumption
  • Multi-slewing absolute magnetic encoder capable of reducing standby power consumption
  • Multi-slewing absolute magnetic encoder capable of reducing standby power consumption

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Such as figure 1 , 2 Shown: Same as the prior art, there is a magnet fixing sleeve 1 made of non-magnetic material, a horizontal magnet 2 is fixed in the magnet fixing sleeve 1, and a Hall integrated circuit 3 is arranged corresponding to the horizontal magnet 2. The output of the integrated circuit 3 is connected with the single-chip microcomputer, and the output of the single-chip computer is connected with the display; an external power supply (commercial power) and a backup power supply are provided, and the output of the external power supply and the backup power supply is connected with the power switching circuit. 1 is also socketed with a monitoring magnet fixed disk 4, and there are 3 to 18 monitoring magnets 5 evenly distributed along the circumference on the monitoring magnet fixed disk 4. Corresponding to the monitoring magnets 5, there is a micro power consumption that can work in an automatic cycle power-off mode. Hall element 6, the output of Hall elemen...

Embodiment 2

[0027] Such as image 3 , 4 Shown: the basic structure is the same as that of embodiment 1, and the difference from embodiment 1 is that there are two Hall elements 6, namely 6-1 and 6-2 in the figure, which are respectively arranged on the upper and lower sides of the monitoring magnet fixed disk 4 side or the same side, the outputs of the two Hall elements 6 are connected to the single chip microcomputer through the jitter identification circuit.

[0028] working principle:

[0029] 1. Same as embodiment 1 when the external power supply supplies power.

[0030] 2. When the backup power supply is used:

[0031] a. When the measured shaft 7 stops rotating, then it is the same as embodiment 1;

[0032] b. If the measured axis 7 rotates, when the forward rotation exceeds 60°, the output signal a of the Hall elements 6-1, 6-2 and the shaking identification circuit is as follows: Figure 5 Shown; the output signal a of the Hall elements 6-1, 6-2 and the shaking identification...

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Abstract

The invention discloses a multi-turnover absolute magnetic encoder which has a simple structure and can greatly prolong the service life of a standby power supply on the premise of guaranteeing the precision and reduce the power consumption of the standby power supply. The multi-turnover absolute magnetic encoder is provided with a magnetic fixed sleeve, an external power supply and the standby power supply, wherein a transverse magnet is fixed inside the magnetic fixed sleeve; a Hall integrated circuit is arranged corresponding to the transverse magnet; an output of the Hall integrated circuit is connected with a singlechip; an output of the external power supply and an output of the standby power supply are connected with a power switching circuit; a monitoring magnet fixed disc is sleeved outside the magnet fixed sleeve; 3 to 18 monitoring magnets are uniformly distributed on the monitoring magnet fixed disc circumferentially; Hall elements which are operated in the mode of automatic circulated power failure are arranged corresponding to the monitoring magnets; outputs of the Hall elements are connected with the singlechip; an output of the power switching circuit is connected with the Hall elements and the singlechip and connected with the Hall integrated circuit through a power switch control circuit; and the output of the external power supply or the standby power supplyis also connected with a switching value interface of the singlechip.

Description

Technical field: [0001] The invention belongs to the field of multi-rotational absolute value encoders, in particular to a multi-rotational absolute magnetic encoder with simple structure, which can greatly prolong the service life of the backup power supply and reduce the power consumption of the backup power supply under the premise of ensuring accuracy. Background technique: [0002] In fields such as valve control, since the controlled valve can still be closed or opened manually when the power supply is cut off, it is necessary to provide a backup power supply for the valve's rotation measurement device - multi-turn absolute encoder, so as to detect the valve at any time The multi-rotation amount is stored and stored to prevent the loss of rotation amount data. The existing method is to connect the multi-rotary absolute encoder to the external power supply (mains) and the backup power supply respectively through the power switching circuit (relay and other circuits). Wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/12
Inventor 孙成孙茂钊
Owner 孙成