JPH0194855A - Bathtub security apparatus - Google Patents

Abstract

PURPOSE:To certainly alarm the abnormality of a bathing person, by judging that a person enters a bathtub by detecting a water level and generating an alarm when it is not judged that the person issues from the bathtub after the elapse of a predetermined time. CONSTITUTION:The water level of a bathtub 1 is detected by a water level detection means 3. A bathing detection means 4 inputs the water level signal outputted from the water level detection means 3 and, when the water level signal rises or falls at a predetermined level or more within a predetermined time, a bathing signal or step-out signal is outputted. When the bathing signal is given to an alarm control means 5 from the bathing detection means, said control means 5 starts clocking and operates an alarm when the step-out signal is not inputted after the elapse of a predetermined time.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a bath security device for notifying family members of an abnormality when an elderly person becomes unable to use his or her body while taking a bath.

Conventional technology Conventional bath security devices of this type generally have a push-button emergency switch installed near the bathtub, and if something goes wrong with the bather, the push button is pressed to call a family member. be.

Problems to be Solved by the Invention However, with the above configuration, it is assumed that the bather has a certain level of energy and is able to press the push button. The problem is that if it is not possible, it is completely useless.

The present invention automatically detects when a bather performs an operation such as pressing a push button when an abnormality occurs that prevents the bather from moving freely while in the bathtub. The purpose of the present invention is to provide a bath security device that sounds an alarm when

Means for Solving the Problems In order to solve the above problems, the bath security device of the present invention includes a water level detection means for detecting the water level of the bathtub, and a water level detected by the water level detection means within a predetermined period of time. When the temperature rises above a certain level, it is determined that someone has entered the bathtub.
A bathing detection means that outputs a bathing signal and, conversely, determines that a person has left the bathtub when the water level falls to a predetermined level or more within a predetermined time and outputs a bathing signal; and a bathing detection means that detects the bathing signal and measures time. The apparatus is equipped with an alarm control means that determines that there is an abnormality and issues an alarm if the bathing detection means does not output a bathing signal even after a predetermined period of time has elapsed.

Function The present invention has the above-described configuration, so that even if an elderly person takes a bath and his or her body becomes ineffective in the bathtub, the water level detection means and the bathing detection means can grasp the bathing condition. If the user remains in the bathtub for a predetermined period of time or longer, the alarm control means determines that there is an abnormality and issues an alarm to notify family members.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In FIG. 1, 1 is a bathtub, and 2 is a water pipe connecting the bathtub 1 and the water level detection means 3, which serves to apply water pressure at the bottom of the bathtub to the water level detection means 3. The water level detection means 3 can be realized by various means such as a semiconductor diaphragm type, a rubber ear 7 ram type, an ultrasonic sensor type, and a float type. 4 is a bathing detection means which inputs the water level signal a outputted from the water level detection means 3, and outputs a bathing signal C or a bathing signal C when the water level signal rises or falls by a predetermined level or more within a predetermined time. It is configured to output.

Reference numeral 5 denotes an alarm control means which, when receiving the bathing signal C from the bathing detecting means 4, starts measuring time and issues an alarm if the bathing signal C does not come after a predetermined period of time has elapsed.

FIG. 2 shows the timing of the water level signal a1, the bathing signal C, and the bathing signal C. The water level signal a is sampled every ts time, during which the water level rises to a predetermined level L1 or higher.
2, the bathing signal is output, and when there is a water level drop L4 equal to or higher than the predetermined level L3, the bathing signal C is output.

FIG. 3 shows an embodiment of the alarm control means 5, in which 6 is a latch circuit, 7 is an AND circuit, 8 is a timer circuit, 9 is an amplifier circuit, and 10 is a speaker.

In such a configuration, when a bathing signal is input,
The contents are held in the latch circuit 6 and the timer enable signal d is output. While the clock enable signal d is being outputted, the tarok pulse passes through the AND circuit 7 and is applied to the timer circuit 8. The timer circuit 8 is a preset timer, and when the tarok pulse is counted by the preset value (te), the timer circuit 8 outputs an alarm signal e. Incidentally, if the bathing signal C is input before the clock pulses are counted in the preset clock, the latch circuit 6 is reset and the timer enable signal d is inputted.
is turned off, and the AND circuit 7 stops outputting the tarok pulse. Also, the timer circuit 8 is initialized.

The alarm signal e output from the timer circuit 8 is amplified by the amplifier circuit 9 and causes the speaker 10 to sound to notify of an abnormality. ◇ FIG. 4 is a timing chart showing the operation of the alarm control means 5.

Effects of the Invention As described above, the bath security device of the present invention provides the following effects.

(1) It is designed to automatically detect changes in the water level of the bathtub and issue an alarm without the need for the bather to press a push button, so it is useful even when the bather's physical freedom is no longer effective.

(2) Since the bathing signal and bathing signal are configured to detect the slope of the change in water level, it is possible to distinguish between cases where the water level gradually changes due to addition of water, draining, etc., and malfunctions can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a bath security device according to an embodiment of the present invention, FIG. 2 is a timing diagram of the device, and FIG.
The figure is a control block diagram of the same device, and FIG. 4 is a timing diagram of the same device. 1...Bathtub, 3...Water level detection means, 4
. . . Bathing detection means, 5 . . . Alarm control means.

Claims (1)

[Claims] water level detection means for detecting the water level of the bathtub; when the water level detected by the water level detection means rises to a predetermined level or more within a predetermined time, it is determined that a person has entered the bathtub and outputs a bathing signal;
When the water level falls to a predetermined level or more within a predetermined time, a bathing detection means determines that a person has left the bathtub and outputs a bathing signal; The bath security device also includes an alarm control means that determines that there is an abnormality and issues an alarm when the bathing detection means does not output a bathing signal.