CN201200563Y - Anti-fall care bed - Google Patents

Abstract

The utility model relates to an anti-fall nursing bed, which includes an automatic lifting guardrail, a bed frame, and a bed board, and is characterized in that it also includes four load sensors, two sets of infrared detection devices, a data acquisition module, a computer processing system, and an alarm system, wherein, The four load sensors are respectively placed at the four corners of the bed frame, and the rigid bed board is placed on the sensors, while two sets of infrared detection devices are respectively installed on the front and rear bedside frames; the four load sensors and the two sets of infrared detection devices are respectively connected to the data acquisition module, The data acquisition module is connected with the computer processing system, and the signal output end of the computer processing system is connected with the alarm system and the driving device of the automatic lifting guardrail. The utility model can effectively prevent the danger of patients falling off the bed, reduce the burden of medical personnel, and improve the current situation of shortage of nursing beds to a certain extent.

Description

Anti-fall care bed

technical field

The utility model relates to an intelligent nursing bed, in particular to an anti-falling nursing bed which is used for handicapped persons or mentally handicapped patients to ensure their safety in bed.

Background technique

In nursing homes or rehabilitation centers, due to the lack of self-control, many elderly and mentally handicapped people get out of bed or fall from the bed without the knowledge of the nursing staff, which may cause serious dangers such as falls due to poor motor control. For a long time, people hope to design a kind of intelligent nursing bed that can prevent patient from getting out of bed or falling without authorization, but have not found a kind of ideal method yet. The research history of nursing beds is very long, but most of them only focus on the development of functions that can change the patient's lying position on the bed, or how to realize the monitoring of physiological parameters and the transmission of patient information; auxiliary functions. Among the more than 230 patents related to nursing beds declared in my country, no nursing beds with fall protection have been found. Some foreign manufacturers have developed mattresses for anti-fall beds. Under normal conditions, the patient lies on the mattress. When the patient gets up and leaves the mattress, an alarm signal will be sent out. False alarm signals may also be issued. Some also place the alarm pad on the floor beside the bed, and send a letter to the police when the patient steps on the mattress, but at this time the patient has fallen off the bed, and some are too late. Therefore, it is of great significance to develop a new type of intelligent nursing bed that can automatically monitor patients falling off the bed in a timely and reliable manner, which is of great significance for improving the safety and quality of rehabilitation nursing for the elderly and disabled people.

Contents of the invention

The utility model is to provide an anti-falling nursing bed, which uses the principle of measuring the center of gravity of objects to monitor the patient's position in real time, and is supplemented by an infrared automatic alarm device, which can more timely and accurately detect the patient's falling from the bed. Give alarm and prevention to improve its intelligence.

In order to achieve the above object, the technical solution of the utility model is: an anti-fall nursing bed, including a bed frame, a head frame, a bed board, an automatic lifting guardrail, four load sensors, two sets of infrared detection devices, and a data acquisition module , computer processing system, and alarm system, in which four load sensors are respectively placed at the four corners of the bed frame, rigid bed boards are placed on the sensors, and two sets of infrared detection devices are respectively installed on the front and rear bedside frames; four load sensors and two sets of infrared The detection device is respectively connected to the data acquisition module, the data acquisition module is connected to the computer processing system, and the signal output end of the computer processing system is connected to the alarm system and the automatic lifting guardrail driving device.

The four load sensors respectively measure the reaction force of the patient on the bed and the infrared detection device detects the patient's up and down state on the bed, and the data of the four sensors and the infrared detection signal are input into the computer processing system through the data acquisition module for calculation. Judging the position and state of the patient's center of gravity on the bed, if the patient is in a dangerous state, the alarm system will alarm, and the guardrail will be automatically raised at the same time.

The substantive features and significant advantages of the utility model are: the four load sensors of the utility model respectively measure the reaction force of each support of the patient on the bed and the infrared detection device detects the patient's standing and lying state on the bed, and through the data acquisition module The four sensor data and infrared detection signals are input into the computer processing system to calculate and judge the position and state of the patient's center of gravity on the bed. If the patient is in a dangerous state, the alarm system will alarm, and at the same time, the guardrail can be automatically raised to ensure the safety of the patient. The utility model can effectively prevent the danger of the patient falling off the bed, reduce the burden of the medical staff, and can make up for the shortage of nursing beds to a certain extent.

Description of drawings

Fig. 1 is a schematic diagram of center of gravity determination;

Fig. 2 is a structural representation of the utility model;

Fig. 3 is a flow chart of the monitoring program of the anti-fall nursing bed.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

As shown in Figure 2, the anti-falling nursing bed of the present utility model includes automatic lifting guardrail 3, bed frame 4, bedside frame 9, bed board 5, four load sensors 1, two sets of infrared detection devices 2, data acquisition module 6 , computer processing system 7, alarm system 8, wherein, four load sensors 1 are respectively placed on the four corners of the bed frame 4, rigid bed boards 5 are placed on the sensors 1, and two sets of infrared detection devices 2 are respectively installed on two bedside frames 9 Four load sensors 1 and two sets of infrared detection devices 2 are respectively connected to the data acquisition module 6, the data acquisition module 6 is connected to the computer processing system 7, and the computer processing system 7 signal output terminals are connected to the alarm system 8 and the automatic lifting guardrail 3 driving devices.

The four load sensors 1 respectively measure the reaction forces of the patient on the bed, the infrared detection device 2 detects the patient's standing and lying state on the bed, and the data of each sensor and the infrared detection signal are input into the computer processing system 7 through the data acquisition module 6, and Calculate and judge the center of gravity position and state of the patient on the bed. If the patient is in a dangerous state, the alarm system 8 will give an alarm, and the guardrail 3 can be automatically raised to ensure the safety of the patient.

The design of the utility model is mainly based on the static weighing technology, and the balance equation calculation is established through the balance relationship between the force and moment between the support reaction force and the gravity to determine the position of the center of gravity (Fig. 1).

Assuming that the patient is lying on the nursing bed, its weight is P, and the position of the center of gravity from the left side of the bed (coinciding with the y-axis in Figure 1) is x. Four load sensors are placed on the four corners of the nursing bed. Using secondary weighing, after removing the tare weight of the bed board, the gravity P and the four supporting reaction forces R ₁ , R ₂ , R ₃ , and R ₄ form a space parallel force system, and the balance condition is as follows:

$\left\{\begin{array}{cc}\mathrm{<span\; class="notranslate">\; \&Sigma;Z</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}& {\mathrm{<span\; class="notranslate">\; R</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; R</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; R</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; R</span>}}_{\mathrm{<span\; class="notranslate">\; 4</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; P</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}\\ \mathrm{<span\; class="notranslate">\; \&Sigma;</span>}{\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; the\; y</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}& {\mathrm{<span\; class="notranslate">\; Px</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; R</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}\mathrm{<span\; class="notranslate">\; a</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; R</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}}\mathrm{<span\; class="notranslate">\; a</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}\end{array}\right.$

In the formula: P——the weight of the patient

R ₁ , R ₂ , R ₃ , R ₄ ——sensor support reaction force

a——Nursing bed width

x ₀ ——Coordinates of patient's center of gravity

Get the coordinates of the patient's center of gravity: $x_0=\frac{(R_1+R_3)a}{(R_1+R_2+R_3+R_4)}$ x ₀ ∈ [0, a]

Considering the limitations of the front and rear side bed frames, it is impossible for the patient to fall off the bed along the y direction, and the _y0 coordinate of the center of gravity does not need to be measured. To ensure safety, a safe area [x ₁ , x ₂ ] is specified. When the position of the center of gravity x ₀ satisfies x ₁ <x ₀ <x ₂ (wherein 0<x ₁ <x ₂ <a), the patient is in the safe area. Otherwise, it is in a non-safe area, and the corresponding information is entered into the computer processing system.

Working process of the present utility model is shown in Fig. 3.

The utility model can effectively prevent the danger of the patient falling off the bed, reduce the burden of the medical staff, and alleviate the current situation of the shortage of nursing beds to a certain extent. It is still in the trial stage, with high technical content and product added value, good extensibility and developability, and a variety of medical equipment can be used in conjunction with it. Future research will focus on how to further improve the coordination and flexibility of the system, and expand the cooperation with its supporting medical facilities.

Claims (2)

1. An anti-fall nursing bed, including a bed frame (4), a bed board (5), a headboard (9), and two automatic lifting guardrails (3), four load sensors (1), two sets of infrared rays Detection device (2), data acquisition module (6), computer processing system (7), alarm system (8), it is characterized in that described four load cells (1) are respectively placed in four corners of bed frame (4), described A rigid bed board (5) is placed on the sensor (1), and two sets of infrared detection devices (2) are installed on the front and rear headboards (9) respectively; the four load sensors (1) and the two sets of infrared detection devices (2) Connect the data acquisition module (6) respectively, and the data acquisition module (6) is connected with the computer processing system (7), and the signal output terminal of the computer processing system (7) is connected with the alarm system (8) and the automatic lifting guardrail (3) drive unit. 2. The anti-falling function nursing bed according to claim 1, characterized in that the four load sensors (1) respectively measure the reaction force of each support of the patient on the bed and the infrared detection device (2) detects that the patient is on the bed. bed, and through the data acquisition module (6), the four sensor data and infrared detection signals are input into the computer processing system (7), and the calculation is performed to determine the position and state of the patient's center of gravity on the bed. If the patient is in a dangerous state, then Alarm system (8) reports to the police, raises guardrail (3) automatically simultaneously.

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