Rock control device for rock body

Abstract

The present invention provided a rocking control device for a rocking body capable of reducing the cost, dispensing with troublesome labor, even if letting babies with different body weights get therein, capable of appropriately controlling the drive according to loads, and providing a desired rocking. A sensor part 14 is provided with a reflecting plate 141 disposed in the rocking body and formed with a reflection transmission pattern part 1411 across a prescribed range, or an approximately half of the rocking direction of the rocking body, and an optical sensor 142 illuminating a light to the reflecting plate 141, receiving the reflected light and outputting a pulse signal S142 according the received light level. A control circuit 15 recognizes a rocking amplitude (a rocking width) by counting a continuance time generating no waveform and a point of variation based on the pulse signal waveforms by the optical sensor, when the time generating no waveform continues a prescribed time, recognizes it as an off time, determines it as the end of a cycle and starts to drive from the next pulse.

Description

technical field [0001] The present invention relates to a swing control device for controlling the swing of a swing body such as a cradle. Background technique [0002] In recent years, it goes without saying that there are appliances that allow infants to ride and move, and chairs for infants that can be used as cradles have also been put into practical use. [0003] Such a driving system for an infant chair includes a driving solenoid installed in the infant chair, a photodiode for detecting a center of swing, and the like. [0004] FIG. 1 is a block diagram showing an exemplary configuration of a swing control device of a conventional driving system for a chair for infants and young children. [0005] As shown in FIG. 1 , this swing control device 1 includes a cradle 2 , an optical sensor 3 , a timer 4 , and a solenoid drive circuit 5 . [0006] In this rocking control device 1 , a cradle 2 on which an infant rides is rocked, for example, when passing through the rockin...

AI Technical Summary

Problems solved by technology

[0009] However, in the above-mentioned conventional rocking control device 1, although the rocking mode of the cradle 2 is different according to the weight of the infant to be seated, in other words, depending on the load, the detection signal of the photodiode 3 indicating that the rocking center is detected S3 drives the solenoid with a fixed drive pulse S4, so there is a problem that the expected shaking control cannot be performed due to changes in the swing range of the baby's weight in the cradle 2

[0010] In addition, since the solenoid is driven with a fixed drive pulse S4, there is a problem that only monotonous shaking can be achieved.

[0013] However, in the above-mentioned conventional swing control device 1, even if there are infants with different weights, because of the advantage that the drive control can be reliably performed according to the load, the cost increases by using a plurality of optical sensors. , the difference between the relative sensitivities of the two sensors affects the performance, so it is necessary to screen and use the parts, the problem is that it takes time to trouble

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