CN116115033A

CN116115033A - Automatic control method of electric bed

Info

Publication number: CN116115033A
Application number: CN202111331962.1A
Authority: CN
Inventors: 陈长青
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2023-05-16

Abstract

The invention aims to provide an automatic control system of an electric bed, which adopts a force-sensitive resistor (flexible pressure sensor) as a front-end signal acquisition component. The present invention features that rectangular array of force sensitive resistors is installed between bed board and mattress, and the change of human body's gravity center is converted into voltage signal for transmission to computer by means of the characteristic that the resistance of force sensitive resistor is inversely proportional to pressure. The computer makes judgment to drive the executing mechanism to realize the actions of turning left and right or sitting up and lying down, etc.

Description

Automatic control method of electric bed

Technical Field

The invention relates to a patent technology, which belongs to the technical field of medical appliances and life health care industry.

Background

The early control mode of the electric bed is a manual control mode. The manual mode is to press corresponding keys on a handle or a keyboard and start an executing mechanism to finish the actions such as lying down, sitting up or turning over. And a timing cycle control mode is added later, namely, the turning plate mechanism is started at fixed time according to preset settings to finish left and right turning actions. Both control modes may not belong to the automatic control mode. Even speech control is simply "manual" replaced by "manual" and still does not fall into the automatic control mode.

With the rapid development of computer technology and sensing technology, infinite possibility is provided for the automation and the intellectualization of various industries. Modern beds will also advance toward automation, intelligence, and humanization. The great development of beds that are more intelligent to control and more comfortable to sleep will be a necessary trend.

If a sleeper wants to turn over while understanding, the electric bed can be started and matched immediately as soon as the sleeper moves, and the sleeper is pushed to turn over without 'moving the mouth and operating the hand', so that the intelligent automatic control mode can be calculated. This is especially important for patients and disabled persons.

Disclosure of Invention

The invention provides that: the flexible pressure sensor (commonly called as force sensitive resistor and FSR) is used as the acquisition element of front signal, the change of human body gravity center is converted into voltage signal by the inverse ratio of the resistance value and pressure of the force sensitive resistor and its good linear characteristic, and then the voltage signal is amplified and arranged to the input end of the programmable controller (PLC). And after the PLC program is operated and processed, judgment is made, an instruction is sent out, and the actuating mechanism is driven to realize actions such as left and right turning or sitting and lying down.

The technical scheme is as follows:

firstly, the invention is characterized in that force sensitive resistors are arranged into a rectangular array and used as a front-end signal acquisition element of a control system for acquiring movement data of the gravity center of a human body.

The invention is characterized in that an automatic control system of the electric bed is composed of a force-sensitive resistor array, a signal arrangement module, a programmable controller executing mechanism, a keyboard and a power supply, and is shown in figure 1.

The third feature of the present invention is that the force sensitive resistor array is mounted between the bed board and the mattress, distributed in the head area, shoulder area and buttock area, see fig. 2.

Implementation examples and beneficial effects:

first, the invention can be implemented in a medical care bed, see the control circuit schematic diagram of fig. 3.

The person moves the bed, and the bed moves with the person. As soon as the patient turns round, the bed body rotates along with the patient; the user can sit up slowly by lifting the head, and can lie down slowly by lifting the buttocks. Not only meets the needs of patients, but also reduces the physical consumption of nursing staff.

Secondly, the invention can also be applied to hotel beds and nursing homes in vacation areas. People can fully enjoy comfortable sleep like a baby cradle, relieve pressure, delay aging and promote health.

Drawings

FIG. 1 is a schematic block diagram of an automatic control method of an electric bed; FIG. 2 is a schematic diagram of the distribution of force sensitive resistor arrays of the electric bed automatic control method; FIG. 3 is an automatic control schematic diagram of the automatic control method of electric bed; FIG. 4 is a schematic diagram of an automatic control circuit of the electric bed.

Claims

1. The invention adopts the force sensitive resistor as a front-end signal acquisition component.

2. The force sensitive resistor is arranged between the bed board and the mattress.

3. The force sensitive resistors are distributed in the head area, the back area and the buttocks area.

4. The force sensitive resistors are distributed in a dispersed way and are used for switching value input modes.

5. The force sensitive elements are arranged in matrix and used for the occasion of center of gravity movement data acquisition and analysis.