A rapid detection method and system for falls in the shower

A detection method and fast technology, which can be applied in measuring pulse rate/heart rate, diagnostic recording/measurement, medical science, etc., can solve the problems of low accuracy rate of drop alarm, poor battery life, invasion of privacy, etc., to improve detection accuracy, The effect of improving practicality and taking into account accuracy

Active Publication Date: 2022-06-24
SHANDONG ACAD OF SCI INST OF AUTOMATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventors of the present disclosure found that most of the existing fall detectors use wearable (bracelet) or visual methods. The wristband has the function of monitoring heart rate and blood pressure. Poor capability, low drop alarm accuracy
The visual method uses a small camera and fast image processing method, but it is easily affected by the environment, not suitable for the shower scene, and there are suspicions of invasion of privacy
Whether the method of lying in bed uses a pressure-sensitive mattress, the cost is high, and the fall cannot be detected
Respiratory activity detection uses contact instruments, which affect normal activities and are not suitable for long-term use in nursing homes or at home

Method used

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  • A rapid detection method and system for falls in the shower
  • A rapid detection method and system for falls in the shower
  • A rapid detection method and system for falls in the shower

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Embodiment 1

[0045] Embodiment 1 of the present disclosure provides a method for rapid detection of falls in a shower. The overall flow diagram of the method for rapid detection of falls in a shower is as follows figure 1 As shown, the small radar sensor is based on the hardware. The small radar sensor adopts a wide antenna beam design. Different antenna beam widths are designed according to its installation position angle, key monitoring area and detection distance, which can be conical or elliptical cone. shape.

[0046] The signal waveform used by the small radar sensor can be pulsed (unipolar or bipolar, first-order or multi-order Gaussian pulse), continuous wave, frequency modulated continuous wave (FMCW) and other forms. During the detection process, the radar sensor continuously obtains the amplitude and phase of the reflected signal in the monitoring area, completes the corresponding demodulation processing, and outputs a baseband digital signal without carrier information.

[004...

Embodiment 2

[0094] Embodiment 2 of the present disclosure provides a rapid detection system for falls in a shower, including a processor and at least one radar sensor disposed in a detection area and connected to the processor in communication, the radar sensor is configured to transmit electromagnetic waves and receive echo signals , the processor performs fall detection by using the rapid detection method for falling in the shower described in Embodiment 1 of the present disclosure.

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Abstract

The present disclosure provides a rapid detection method and system for falling in the shower, which continuously observes multiple times and calculates the sum of the power spectrum density within the observation range of the body movement frequency of each observation, and passes the sum of the power density during and after the fall. Comparison of limit values, pre-alarm of falls, and confirmation of falls by comparing the power spectral density within the respiratory frequency observation range with the echo interference level obtained in corresponding situations; this disclosure is applicable to non-contact and non-visual falls Detection does not affect normal activities, does not violate personal privacy, greatly improves the practicability of detection, and has a very high promotion value.

Description

technical field [0001] The present disclosure relates to the technical field of fall detection, and in particular, to a rapid detection method and system for falls in a shower. Background technique [0002] The statements in this section merely provide background related to the present disclosure and do not necessarily constitute prior art. [0003] Falling in the shower is a very dangerous, sudden and imperceptible abnormal situation, and may even induce heart and brain diseases. In the research of smart medical equipment and devices, the detection of shower falls will also attract attention. [0004] The inventors of the present disclosure have found that most of the existing fall detectors adopt wearable (wristband) or visual methods. The wristband has the function of monitoring heart rate and blood pressure, and some can also locate and call, and even can alarm when falling, but the battery life is not enough. The ability is poor, and the accuracy of the drop alarm is ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): A61B5/11A61B5/113A61B5/05A61B5/08A61B5/024A61B5/00
CPCA61B5/1117A61B5/113A61B5/0816A61B5/05A61B5/024A61B5/7235A61B5/746
Inventor田现忠李向东刘成业颜广赵兴文张琳张延波
OwnerSHANDONG ACAD OF SCI INST OF AUTOMATION