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Elevator car location detector device

A car position detection, car technology, applied in the direction of transportation and packaging, elevators, etc., to achieve the effect of reducing manufacturing costs

Active Publication Date: 2014-10-08
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The optical method can detect the identification plate with high precision, but has the disadvantage of being weak in terms of dust, water droplets and disturbing light

Method used

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  • Elevator car location detector device
  • Elevator car location detector device
  • Elevator car location detector device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0049] figure 1 It is a diagram showing a schematic configuration of an elevator provided with the car position detection device 101 according to the first embodiment, and shows a state in which the car 40 on which passengers ride is located at the hall entrance 10 . Such an elevator uses a rope 60 to connect the car 40 to a counterweight (not shown), and uses a motor (not shown) to wind up and unwind the rope 60 to lift the car 40 in the hoistway 50 . In addition, the landing entrance 10 is composed of the landing ceiling 1 and the landing floor 2 , and the hoistway 50 is formed by the landing opening 10 and the side wall 3 . In addition, the position of the car 40 can be detected by counting incremental pulses output from an encoder connected to the above-mentioned motor. In addition, as described above, the pulse count value is reset when the car position detection device 101 detects the door zone, and then the motor is controlled using the set value to stop the car 40 at ...

Embodiment approach 2

[0089] use Figure 13 , the car position detection device according to Embodiment 2 of the present invention will be described. like Figure 13 As shown, in the car position detection device 102 according to Embodiment 2, a detection coil 131A and an exciting coil 131B are arranged in a direction perpendicular to the ascending and descending direction with the identification plate 120 interposed therebetween. Such structure and reference Figure 9 The structure described in the car position detection device 101 of Embodiment 1 is the same, however, Figure 9 sensor 130 shown with Figure 13 The structural difference of the illustrated sensor 130-4 is that the Figure 9 The alternating magnetic field component removal circuit 133 is shown.

[0090] In such a configuration, the detection coil 131A outputs a voltage obtained by combining the alternating magnetic field and the eddy current magnetic field.

[0091] Figure 14A The ratio n(= d / δ) relationship between, Figu...

Embodiment approach 3

[0103] Next, refer to Figure 18 , the car position detection device 103 according to Embodiment 3 of the present invention will be described.

[0104] The car position detection device 103 of Embodiment 3 has the same structure as that of the car position detection device 101 of Embodiment 1 described above. However, in the car position detection device 103 of Embodiment 3, the comparator 137 has It differs from the car position detection device 101 of Embodiment 1 in that there are two thresholds. Hereinafter, the different parts will be described in detail.

[0105] When the sensor 130 moves toward the identification plate 120 from outside the range of the identification plate 120, for example, in the +X direction, the identification plate 120 is the same as that in Embodiment 1, therefore, as Figure 18 As shown, the output V3 of the phase difference detection circuit 134 and the output V2 of the amplitude value detection circuit 135 change. The output V2 of the amplitu...

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Abstract

Provided is an elevator car location detector device, comprising: an identification plate (120) which is configured of a conductor with an equivalent plate thickness to a surface film depth of an eddy current, and a sufficiently thick conductor; and a sensor (130) which moves relative to the identification plate. The sensor further comprises: an excitation coil (131B) which emits an alternating magnetic field; a detector coil (131A) which detects the amplitude and phase of an eddy current magnetic field which arises from the identification plate; and signal processing units (133-137) which detect from an output signal of the detector coil whether the sensor is facing a door zone or a re-level zone.

Description

technical field [0001] The invention relates to an elevator car position detection device. Background technique [0002] The elevator uses a rope to connect the car on which the passengers ride and the counterweight, and uses a motor to wind up or unwind the rope, thereby controlling the lift of the car in the hoistway with a low load. The position of the car can be detected by counting incremental pulses output from an encoder connected to the motor. However, in practice, the position of the car may differ from the actual position of the car in the method of counting the output pulses of the encoder due to slippage of the rope on the pulley connected to the motor shaft, extension of the rope, etc. Happening. [0003] That is, when the car is about to stop at a designated floor, if the motor is used to control the position of the car according to the output pulse count value of the encoder, so that the distance between the ground of the car and the floor of the landing sid...

Claims

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Application Information

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IPC IPC(8): B66B3/02
CPCB66B3/02B66B1/40
Inventor 井上甚渡边佳正西泽博志仲岛一白附晶英
Owner MITSUBISHI ELECTRIC CORP
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