Method for realizing remote control of 25 keys of nursing bed and device thereof

Abstract

The invention relates to a method for realizing remote control of 25keys of a nursing bed and a device thereof. A parallel key code generation circuit is formed from a single chip microcomputer and a 5*5 matrix keyboard, the key codes are binary codes, the keyboard is scanned by the single chip computer to obtain a 5-bit binary code, then the binary code is decomposed to three high bits and two low bits or two high bits and three low bits, an identification bit is configured to form two 4-bit binary numbers, and the two 4-bit binary numbers are respectively sent to a rolling code encoder and then sent to a transmitting module for transmission after encoded; a corresponding receiving module receives the signal, decodes the signal through a decoding circuit matched with the rolling code andoutputs; a subsequent controller sends a corresponding control command according to the parallel code to be recovered, to control the mechanical transmission and operation mechanism of the nursing bed to work. In the invention, the bottleneck that the nursing bed can only be operated with 15 keys by the rolling code encoder is broken through; besides, the circuit is simple, the operation is reliable, and the practical value is great.

Description

technical field [0001] The invention relates to the technical field of nursing bed remote control, in particular to a method and device for realizing the remote control of the nursing bed 25 keys. Background technique [0002] Most of the existing nursing beds use wired remote controllers. Since the remote controller has only five functions, ten key switches are generally set, and there are nine wires between the remote controller and the main control circuit, that is, one button is configured with one wire. With the continuous improvement of living standards, the functions of nursing beds are also constantly enriched. For example, the guardrail is a crucial part for the safety of nursing beds, but the existing ones are manual or operated by nursing staff, which is mostly inconvenient. It needs to be upgraded to remote control. The four guardrails use a single key to remotely control the lifting of each guardrail, and then use one key to remotely control the two lower guardr...

AI Technical Summary

Problems solved by technology

There are two types of interference here: one is the interference between different wireless remote controls, and the two remote controls cannot be operated at the same time, otherwise it will be invalid; the other is the interference between the wireless remote control and the wired remote control. A drive circuit only uses simple diodes and key switches as one-way isolation from each other. When two remote controls are operated at the same time, they cannot be restrained from each other, which will cause terrible effects

A patient with an orthopedic injury is operating to lift his legs up. At this time, the nurse uses a wireless remote control to lift his back up. Both of them drive two motors at the same time, causing the connected bones to separate again, which is very scary.

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