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Automatic door drive device and automatic door device

A driving device, automatic door technology, applied in door/window fittings, power control mechanisms, buildings, etc., can solve the problems of collision with pedestrians and door damage, and achieve the effect of improving safety and preventing collision or door damage.

Inactive Publication Date: 2009-06-03
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the motor is driven in the state where the output signal of the encoder is abnormal, the door may be moved at a speed exceeding the normal door opening and closing speed, which may hit a passer-by or damage the door.

Method used

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  • Automatic door drive device and automatic door device
  • Automatic door drive device and automatic door device
  • Automatic door drive device and automatic door device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] FIG. 1 shows a block configuration diagram of an automatic door driving device according to Embodiment 1 of the present invention. A drive pulley 8 is attached to the motor 2 , and a belt 10 is drawn between the motor 2 and the driven pulley 9 . Connect the door 1 to the belt 10, and move to the closed position when the motor 2 rotates forward, and move to the open position when the motor 2 rotates reversely. The motor 2 can use a DC motor or a DC brushless motor, and is equipped with a Hall element for detecting the position of the rotor including a permanent magnet. Corresponding to each motor 2, the Hall element of the encoder 3 outputs two-phase or three-phase pulse signals.

[0030] The storage unit 6 is connected to the CPU 7 . The storage unit 6 is composed of a nonvolatile memory for storing various parameters for operating the door 1 .

[0031] Based on a control signal from the CPU 7 , the motor drive circuit 5 operates to control the rotation of the motor ...

Embodiment approach 2

[0039] In Embodiment 1, when an abnormality occurs in the pattern of output pulses from the Hall element in the constant speed section where the door operating speed is the maximum, the calculated pulse interval time T is compared with the predetermined value A. In this embodiment, During occurrence, this determination is also made in the intervals of acceleration, deceleration, and creep as shown in FIG. 7 (S31, S41, S51). The processing of each interval is due to the Figure 6 The flow shown is the same, so repeated explanations are omitted.

[0040] Although the set value compared with the calculated pulse interval time can be a constant due to the fixed speed in the constant speed and deceleration intervals, but because the pulse interval time changes in the acceleration and deceleration intervals, such as Figure 8 As shown, the setting value of the abnormal judgment in the acceleration and deceleration intervals is a value expressed by a linear function of the time t fr...

Embodiment approach 3

[0042] In Embodiment 3 of the present invention, which has the same structure as Embodiment 1, the number of pulses of the rising edge / falling edge of the Hall element is counted, the moving distance of the door is measured, and the action stroke of the door opening and closing action is measured. Based on this distance Decide the positions of acceleration, constant speed, acceleration, and slow-moving intervals, and control the speed of the door.

[0043] In the case where the output signal from the Hall element is normal, such as Figure 9 As shown, the CPU controls the speed of the motor based on the command speed determined based on various parameters for operating the door. Here, 0~x1 is the acceleration section, x1~x2 is the constant speed section, x2~x3 is the deceleration section, x3~x4 is the slow-moving section, and the door is in the fully open or fully closed position within the distance x4, which is equivalent to the Action stroke length.

[0044] exist Figure...

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PUM

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Abstract

The present invention provides an automatic door drive device, capable of opening / closing a door safely even though an output signal of an encoder is abnormal. The device is composed of a motor (2) for opening / closing the door (1), an encoder (3) for detecting the rotating speed of the motor (2), a control part (4) for controlling the motor (2) according to the signal of the encoder (2), and a drive circuit (5) for driving the motor (2) according to the signal from the control part (4); the device is also provided with an abnormal detection mechanism for the output signal of the encoder (3) and a control mechanism for decreasing the speed of the motor based on the abnormal detection. After the output signal of the detection encoder (3) is abnormal, a time metered from a pulse outputted from the encoder (3) is limited, so as to decrease the speed of the motor (2) with a basically fixed ratio.

Description

technical field [0001] The invention relates to an automatic door driving device and an automatic door device using the driving device. Background technique [0002] The existing automatic door driving device consists of a motor for opening and closing the door, an encoder for detecting the rotational speed of the motor, a control unit for controlling the motor based on the signal from the encoder, and a drive unit for driving the motor based on the signal from the control unit. drive circuit configuration. The control part calculates the rotation direction and speed of the motor according to the signal from the encoder, controls the speed of the motor so as to perform acceleration, constant speed, deceleration, and retardation according to the stroke length of the door, and drives the circuit to rotate the motor by receiving the control signal. In this feedback control, if there is an abnormality in the signal from the encoder, the technique of stopping the drive of the do...

Claims

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Application Information

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IPC IPC(8): E05F15/20
Inventor 岸本晃弘
Owner PANASONIC CORP