Position detection apparatus for elevator and method thereof

A detection device and detection method technology, applied in the direction of transportation and packaging, elevators, etc., can solve the problem of the number of position information and the number of shielding plates being reduced

Inactive Publication Date: 2012-10-24
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the shielding plate of this shape cannot be used as a shielding plate representing different positional information in one lifting channel, relative to the number of bit information in the horizontal direction (number of photoelectric sensors) and the number of bit information in the vertical direction of the prescribed shielding plate The amount of information that can be represented and the amount of positional information that can be used (that is, the number of shapes of the mask) are reduced

Method used

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  • Position detection apparatus for elevator and method thereof
  • Position detection apparatus for elevator and method thereof
  • Position detection apparatus for elevator and method thereof

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Embodiment Construction

[0026] figure 1 It is a side view showing the overall configuration of an elevator system including a position detection device according to an embodiment of the present invention. Such as figure 1 As shown, the balance weight 11 is connected with the main sling 10, and the main sling 10 is driven by the motor 2 to make the elevator car 1 go up and down in the hoistway. The motor 2 is driven by an inverter 5 connected to an AC power source 7 via a disconnection circuit 6 . When the opening circuit 6 operates, the driving force of the motor 2 disappears. The hoist brake 3 suppresses the driving of the motor 2 so as to generate a braking force on the elevator car 1 . The hoist brake 3 is usually in an active state, and when energized, the braking action is released.

[0027] The governor rope 12 is pulled as the elevator car 1 moves, causing the governor 13 to rotate. The rotary encoder 14 rotates together with the governor 13 to generate a pulse signal. By accumulating th...

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Abstract

The present invention provides a position detection apparatus for an elevator and a method thereof, which are used for detecting 4-row 2-column information represented by shielding plates (31-1-31-n) for each floor (1-n), integrating digital information obtained by photoelectric sensors (20 (21-1-21-4)) and the operation direction information of an elevator car through the shielding plates, enabling the digital information with symmetry in various direction as different position information for use. Therefore, in order to detect the position of the elevator car, the determined position in an elevating channel is provided with the shielding plates (31, 32, 33) representing the digital information as a position indication body, and inside the elevator car there are provided the photoelectric sensors (20 (21-1-4)), thereby being capable of distinguishing and detecting more position information through using fewer shielding plates.

Description

technical field [0001] The present invention relates to a detection device and method for detecting the position of a car required for realizing control of the position of the car and a safety function corresponding to the position of the car in an elevator. Background technique [0002] In the elevator system, in order to move the elevator car from the current position to the destination floor, or to display the current position, it is necessary to know the position of the elevator car in the hoistway. The movement of the elevator car is accomplished by speed control and position control of the motors that drive the slings that suspend the elevator car. At this time, the speed and displacement of the elevator car are measured based on the output of the encoder that rotates with the motor shaft. In addition to the displacement, the position of the elevator car can also be grasped by detecting the reference position. When detecting the reference position, for example, the e...

Claims

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Application Information

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IPC IPC(8): B66B5/00B66B3/02
Inventor 松原正裕樱井康平吉川敏文井上真辅松土贵司
Owner HITACHI LTD
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