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On-bed and off-bed detection method and equipment based on flexible film resistive pressure sensor

A resistive pressure, flexible film technology, applied in sensors, instruments, measuring forces, etc., can solve problems such as personnel leaving, prevent cheating, avoid accidents, and facilitate inspection work.

Pending Publication Date: 2022-04-19
HENAN HANWEI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, for some special supervision places, there may be situations where heavy objects are placed on the bed and people leave. How to use technological means to prevent relevant personnel from escaping the monitoring of the bed-leaving state based on the pressure monitoring sensor is imminent.

Method used

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  • On-bed and off-bed detection method and equipment based on flexible film resistive pressure sensor
  • On-bed and off-bed detection method and equipment based on flexible film resistive pressure sensor
  • On-bed and off-bed detection method and equipment based on flexible film resistive pressure sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] attached figure 1 And attached figure 2 Shown is a flow chart of a detection method for leaving the bed based on a flexible thin film resistive pressure sensor, the detection method for leaving the bed includes the following steps:

[0049] Step 1, according to the preset detection period T, read the original in-bed data x(t) collected in real time, and use the IIR data filter to filter the original in-bed data;

[0050] Step 2: Determine the left endpoint SL and the right endpoint SR of the original data x(t) leaving the bed after filtering, and perform all the maximum points of the original data x(t) leaving the bed after filtering from left to right Mark to obtain the maximum point set GM, and mark all the minimum points of the filtered original in-bed data x(t) from left to right to obtain the minimum point set GN;

[0051] Wherein, the maximum point set GM={M max ǀ M 0 , M 1 ,...,M k}, the set of maximum points is arranged in descending order according to th...

Embodiment 2

[0101] The difference between this embodiment and embodiment 1 is:

[0102] After step 8, it is also performed: when it is determined that the person to be tested is in the state of leaving the bed and there is a phenomenon of heavy objects on the bed in the i-th time interval, and the person to be tested is the first user object, a second bed-leaving alarm is issued .

[0103] It can be understood that since the detection method for leaving the bed is based on the flexible thin film resistive pressure sensor, when the person leaves the bed and puts a heavy object on the bed, as attached image 3 As shown, only considering the pressure value of the flexible thin-film resistive pressure sensor, there may be a misjudgment phenomenon, that is, the phenomenon that the person to be tested is in the state of leaving the bed and there is a heavy object on the bed is misjudged as the person to be measured is in the state of the bed; for this phenomenon , this embodiment monitors whet...

Embodiment 3

[0111] This embodiment provides a kind of in-bed detection equipment based on flexible thin film resistive pressure sensor, the described in-bed detection equipment based on flexible thin film resistive pressure sensor includes a memory, a processor and a memory stored on the memory and The out-of-bed detection program based on the flexible thin-film resistive pressure sensor that can run on the processor, when the out-of-bed detection program based on the flexible thin-film resistive pressure sensor is executed by the processor, it is as in Embodiment 1 Or the steps in the detection method based on the flexible thin film resistive pressure sensor in 2.

[0112] as attached Figure 7As shown, the bed-leaving detection device based on the flexible thin film resistive pressure sensor also includes a flexible thin film resistive pressure sensor, a signal conditioning module, an alarm module, a power supply module and a wireless transmission module, wherein the flexible thin film ...

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Abstract

The invention provides an on-bed and off-bed detection method and equipment based on a flexible film resistance type pressure sensor. The method comprises the following steps: performing in-bed and off-bed state detection based on third target in-bed and off-bed data ci '(t) and fourth target in-bed and off-bed data ri (t): if a first threshold value is less than the maximum value of ci' (t) and a second threshold value is less than or equal to the maximum value of ri (t) and is less than a third threshold value, judging that a to-be-detected person is in a bed and lying state within an ith time interval; if the first threshold value is smaller than or equal to the maximum value of ci '(t), and the third threshold value is smaller than or equal to the maximum value of ri (t), it is judged that the person to be detected is in a bed and side-by-side state within the ith time interval; if the maximum value of the ci '(t) is smaller than the first threshold value and the maximum value of the ri (t) is larger than or equal to the second threshold value and smaller than the third threshold value, it is judged that the person to be detected is in the off-bed state and the heavy object is in the bed in the ith time interval, and if the maximum value of the ci' (t) is smaller than the first threshold value and the maximum value of the ri (t) is smaller than the second threshold value, it is judged that the person to be detected is in the off-bed state in the ith time interval.

Description

technical field [0001] The invention relates to the technical field of bed-leaving state monitoring, in particular to a bed-leaving detection method and equipment based on a flexible thin-film resistive pressure sensor. Background technique [0002] With the improvement of people's attention and attention to sleep state, related research on the monitoring of leaving bed state is gradually rising. [0003] At present, the elderly (especially the elderly living alone or lying in bed for a long time) have increasingly prominent needs for life services and medical care. Due to the decline of various physiological functions, the elderly need a high proportion of bed rest in daily situations. Therefore, for the elderly The focus of human care is mostly on the care of bedridden patients. In hospitals, rehabilitation centers or ordinary residents’ homes, the most common medical care problems of a type of bedridden patients represented by the elderly include accidental bed fall and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/11A61B5/00G01L1/20
CPCA61B5/1115A61B5/1116A61B5/1118A61B5/6891A61B5/746A61B5/725A61B5/7235G01L1/20
Inventor 武传伟魏君飞赵金领陆小辉林聪朱少安
Owner HENAN HANWEI ELECTRONICS
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