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Speed detection method and apparatus of moving body

A speed detection, moving body technology, applied in transportation, packaging, elevators, etc., can solve problems such as insufficient resolution, and achieve the effect of preventing collisions

Inactive Publication Date: 2009-01-28
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This resolution is insufficient for speed detection used by safety devices

Method used

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  • Speed detection method and apparatus of moving body
  • Speed detection method and apparatus of moving body
  • Speed detection method and apparatus of moving body

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Experimental program
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Embodiment Construction

[0072] figure 1 It is a structural schematic diagram of an elevator device to which a speed detection device according to an embodiment of the present invention is applied.

[0073] The elevator car 101 and the counterweight 102 are connected to each other by a main rope 103 wound around a hoist 104 . The hoist 104 drives the main rope 103 according to the instruction of the control device 105 . Accordingly, the elevator car 101 (hereinafter, may be simply referred to as "the car") and the counterweight 102 move in the hoistway. An elevator car-side safety device 106 is installed in the elevator car, and a speed sensor 107 , an acceleration sensor 108 and an absolute position sensor 109 are connected to the elevator car-side safety device 106 .

[0074] The safety device 106 on the elevator car side judges whether there is overspeed according to the input data from the sensor, and sends the safety control information including the judgment result to the control device 105 th...

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Abstract

The invention provides a speed detecting method of a moving body and a device thereof. In the lift using terminal floor reduction device, the device is able to obtain the necessary overspeed detecting response time near the terminal floor by the speed detector equipped in the lift car without using the linear coder having high position resolving capability. The position differential value from the linear coder and the acceleration integral quantity from the acceleration sensor are combined into speed value to carry out the overspeed judgment. The acceleration integral quantity is reset and differed at pulse edge of the linear coder. The necessary response time detecting the overspeed near the terminal floor is improved, and the speed needed by the terminal floor reduction device is accurately processed.

Description

technical field [0001] The invention relates to a speed detection method and device of a moving body, in particular to a speed detection method and device for a safety device used to detect the speed of an elevator car to improve its safety. Background technique [0002] Conventionally, Patent Document 1 and the like can be cited as an example in which an elevator safety device is configured using various sensors. In Patent Document 1, the detection values ​​detected by the speed sensor and the acceleration sensor are individually subjected to threshold value processing to determine whether there is overspeeding. [0003] Patent Document 1: International Publication WO2004 / 083091 [0004] As a device for making the rated speed of the elevator car near the terminal floor of the hoistway lower than that of the elevator car on the intermediate floors, there is a terminal floor deceleration device. By using this terminal floor deceleration device, when the elevator car collide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/04B66B3/02
Inventor 井上秀树岸川孝生大贯朗
Owner HITACHI LTD
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