Fall detection and automatic alarm system applied to walking stick

Abstract

The invention discloses a fall detection and automatic alarm system applied to a walking stick, which relates to the technical field of safety protection and comprises a walking stick state analysis module and a fall monitoring module. The walking stick use state analysis and fall monitoring module is used for analyzing interaction information of the walking stick and a user to obtain a use judgment value, judging and generating a walking stick use signal and marking a monitoring time zone; and the tumble monitoring module analyzes the acceleration, the inclination angle and the applied pressure of the walking stick when receiving the walking stick use signal, fuses analysis results to obtain a tumble judgment value, and judges and generates a tumble signaling according to the tumble judgment value and a preset threshold value. Through cooperative work of a walking stick state analysis module and a falling monitoring module, the walking stick use state is judged, a monitoring time zone is defined, dynamic state information is analyzed, influence values are calculated and fused to obtain a falling judgment value, abnormal changes of a user during walking are sensitively captured, potential risks are recognized in advance, and a signaling is sent in time for early warning before falling. The action safety of the user is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of safety protection, and in particular to a fall detection and automatic alarm system applied to a walking stick. Background Art

[0002] As the global population ages, the health and safety of the elderly are receiving increasing attention. Falls are one of the most common accidental injuries among the elderly, resulting in extremely high mortality and disability rates, which imposes a heavy burden on individuals, families, and society. Therefore, the development of technologies and equipment that can effectively prevent and promptly respond to falls is of great significance for improving the quality of life and safety of the elderly.

[0003] Although the fall detection devices currently on the market can detect fall events to a certain extent, they still have the following limitations: Most devices rely on a single accelerometer to detect falls, which limits their ability to distinguish between daily activities and falls, resulting in a high rate of false positives; Due to the lack of application of advanced technologies such as multi-sensor fusion and deep learning, the detection accuracy of existing equipment in complex environments is limited; Existing devices often cannot be adjusted according to an individual's specific behavioral patterns and health conditions, resulting in inaccurate monitoring. Summary of the invention

[0004] In view of the limitations of existing fall detection devices, the present invention provides a fall detection and automatic alarm system applied to a walking stick, and develops a walking stick system that can comprehensively and accurately detect falls, and promptly and effectively issue alarms and provide personalized protection.

[0005] The object of the present invention can be achieved by the following technical solutions: A fall detection and automatic alarm system applied to a walking stick, comprising a data acquisition module, a walking stick state analysis module, and a fall monitoring module; A data acquisition module, used to collect dynamic state information of the cane, environmental information and state information of the interaction between the user; wherein the state information includes contact temperature, heart rate, and applied pressure, and the dynamic state information includes acceleration, tilt angle, and applied pressure; The cane state analysis module is used to analyze the cane usage state according to the state information of the interaction between the cane and the user to obtain the cane usage determination value; if the cane usage determination value is greater than its preset usage determination threshold, a cane usage signal is generated and the cane usage time is recorded; and the time zone between the cane usage time and the current time is marked as the cane monitoring time zone; The fall monitoring module is used to analyze any information in the dynamic state information of the cane when generating a cane use signal, specifically: analyze the acceleration of the cane, analyze the inclination angle of the cane, and analyze the pressure applied to the cane to obtain the acceleration shadow value, the inclination angle influence value, and the pressure influence value respectively; fuse the acceleration shadow value, the inclination angle influence value, and the pressure influence value to obtain the fall judgment value of the cane; when the fall judgment value is greater than its preset fall threshold, generate a fall signal; the fall signal is used to trigger a fall alarm operation.

[0006] Preferably, the fall monitoring module includes a warning degree and environment analysis module, a fall degree determination module, and an alarm execution module; The warning degree and environment analysis module is used to receive the fall signaling and analyze the fall degree to obtain the fall impact information; wherein the fall impact information includes the fall duration, wave shadow value, outlier value, use judgment difference and fall impact value; it is also used to analyze the environmental information of the cane to obtain the environmental impact value; the fall impact value and the environmental impact value are weighted to obtain the fall degree value; A fall degree determination module is used to match the fall degree value with the value range of the fall degree group to generate a corresponding fall degree signal; wherein the fall degree group includes slight, moderate, and severe fall degree signal; an alarm execution module is used to receive the fall degree signal to execute the corresponding operation.

[0007] Preferably, the present invention also includes a sensor setting module; the sensor setting module includes a plurality of sensor groups for collecting state information, dynamic state information and environmental information; the sensor group includes a covering contact temperature sensor, a heart rate sensor and a pressure sensor arranged on the top of the cane, and an acceleration sensor, a tilt angle sensor and an environmental parameter sensor installed along the axial and vertical directions of the cane.

[0008] Preferably, the use status of the cane is analyzed according to the state information of the interaction between the cane and the user, and the specific process is as follows: Obtain status information of the top of the cane, including the temperature, heart rate and applied pressure of the top of the cane; Setting an ideal value corresponding to any parameter in the status information; performing a difference calculation between the numerical value of any parameter in the status information and the ideal value to obtain the ideal difference corresponding to the parameter; Mark the time zone within a preset time length before the current moment as the walking stick monitoring time zone; obtain the ideal difference of any parameter in the state information in the walking stick monitoring time zone, and calculate the mean and standard deviation of the ideal difference of the parameters in the walking stick monitoring time zone to obtain the ideal difference mean and ideal difference fluctuation value; The ideal extreme value is obtained by performing difference calculation on the maximum and minimum ideal differences in the walking stick monitoring time zone; The ideal difference, the ideal difference mean, the ideal difference fluctuation value and the ideal extreme value are weighted to obtain the ideal influence value of the parameter; the ideal influence values ​​of all parameters in the state information are weighted to obtain the cane use judgment value.

[0009] Preferably, the acceleration of the walking stick is analyzed, specifically: Get the acceleration of the cane in any direction in three-dimensional space, and convert the acceleration of the cane in the x, y, and z directions in three-dimensional space; Obtain the preset weight of the cane; calculate the components of the cane in the x, y, and z axis directions in three-dimensional space, and respectively calculate the resultant force components in the x, y, and z axis directions; obtain the resultant force components in any axis direction at any adjacent time in the cane monitoring time zone; The mean and standard deviation of the resultant force components at any adjacent moments in the walking stick monitoring time zone are calculated to obtain the mean and fluctuation values ​​of the resultant force components corresponding to the axial direction; the difference between the maximum and minimum resultant force components in the walking stick monitoring time zone is calculated to obtain the extreme difference value of the resultant force components; The resultant force component at the current moment is weighted with the resultant force component mean, resultant force component fluctuation value, and resultant force component fluctuation value extreme difference value to obtain the resultant force distribution corresponding to the axial direction; The resultant force components in all axial directions are weighted to obtain the acceleration value of the cane.

[0010] Preferably, the environmental information of the walking stick is analyzed, specifically: The environmental information of the walking stick is obtained, including temperature, humidity, air quality, and noise; the ideal environmental value of any parameter in the environmental information is set, and the difference between the numerical value of any parameter in the environmental information and the ideal environmental value corresponding to the parameter is calculated to obtain the environmental difference; the mean and standard deviation of the environmental difference in the walking stick monitoring time zone are calculated to obtain the environmental difference mean and environmental difference fluctuation value; the environmental difference, environmental difference mean, and environmental difference fluctuation value of the parameters in the environmental information are weighted to obtain the environmental difference shadow value corresponding to the parameter; the environmental difference shadow values ​​of all parameters in the environmental information are weighted to obtain the environmental impact value.

[0011] Preferably, the tilt angle of the walking stick is analyzed as follows: The walking stick monitoring time zone is equally divided into several tilt monitoring time zones, the tilt angle between the top and bottom of the walking stick at any moment in the tilt monitoring time zone is obtained, and the tilt angles at adjacent moments in the tilt monitoring time zone are calculated to obtain the tilt difference; the tilt difference in the tilt monitoring time zone is calculated to have a mean and standard deviation, and the tilt difference mean and tilt difference fluctuation value are obtained; the minimum and maximum tilt differences in the tilt monitoring time zone are calculated to have a tilt extreme difference; the tilt difference mean, tilt difference fluctuation value, and tilt extreme difference value are weighted to obtain the zone tilt value; The inclination values ​​of all inclination monitoring time zones within the walking stick monitoring time zone are weighted to obtain the inclination influence value.

[0012] Preferably, the pressure applied by the cane is analyzed as follows: Obtain the applied pressure of the cane at any time in the cane monitoring time zone, calculate the average of the applied pressure in the cane monitoring time zone to obtain the average pressure value J; calculate the difference between the maximum and minimum applied pressures in the cane monitoring time zone to obtain the pressure extreme difference value; The pressure applied closest to the current moment in the cane monitoring time zone is weighted together with the average pressure value and the extreme pressure difference value to obtain the pressure impact value.

[0013] Preferably, the degree of fall is analyzed, specifically: Mark the moment when the fall signal is generated as the fall moment, mark the time zone between the current moment and the initial moment as the fall time zone; calculate the time length of the fall time zone to obtain the fall duration; Obtain the cane use determination value output by the cane state analysis module; construct a broken line change diagram of the cane fall state, input the cane use determination value at any time in the fall time zone into the broken line change diagram, and mark the position of the cane use determination value in the broken line change diagram as a use point; connect adjacent use points to obtain a use line, and calculate the slope of the use line; mark a positive slope as a positive slope value, and mark the absolute value of a negative slope as a negative slope value; sum up all positive slope values ​​and negative slope values ​​in the fall time zone and calculate the absolute value to obtain a positive slope total value and a negative slope total value; perform weighted processing on the positive slope total value and the negative slope total value to obtain a wave shadow value; Set a slope change threshold, mark the usage lines corresponding to the positive slope values ​​and negative slope values ​​greater than the slope change threshold as abnormal change lines; record the number of abnormal change lines in the fall time zone and mark it as an abnormal value; Obtaining a cane use determination value at any time in the fall time zone, and calculating the difference between the maximum and minimum cane use determination values ​​in the fall time zone to obtain a use determination difference; The fall duration, wave shadow value, outlier value and usage judgment difference are weighted to obtain the fall impact value; the fall duration, wave shadow value, outlier value, usage judgment difference and fall impact value are marked as fall impact information.

[0014] Preferably, receiving the fall degree signaling to perform corresponding operations is specifically: When a minor fall degree signal is generated, a brief prompt and a slight vibration are issued, and at the same time, the minor fall information including the time of signal generation and the current position of the cane is sent to the application associated with the cane through wireless communication for viewing; When a moderate fall degree signal is generated, a voice alarm is issued, a local rescue number is dialed, and a preset rescue notification is played. At the same time, the moderate fall information is sent to the application associated with the cane and the corresponding smart device; When a severe fall degree signal is generated, an audible and visual alarm is issued, the emergency center is dialed and an emergency rescue notification is played, an emergency notification is sent to the emergency contact, and the severe fall information is sent to the application associated with the cane and the corresponding smart device.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention cooperates with the cane state analysis module and the fall monitoring module to accurately judge the cane usage status and define the monitoring time zone based on the interactive state information, deeply analyze the dynamic state information to calculate the influence value fusion to obtain the fall judgment value, keenly capture the abnormal changes of the user when walking, identify potential risks in advance, and send signals in time to warn before falling, effectively ensuring the safety of the user's movement.

[0016] 2. The present invention can realize the functions of comprehensively evaluating the fall situation, accurately determining the fall degree and timely executing the corresponding alarm operation through the coordinated work of the warning degree and environmental analysis module, the fall degree determination module and the alarm execution module. The warning degree and environmental analysis module comprehensively analyzes the fall-related information and environmental factors to obtain the fall degree value; the fall degree determination module matches and determines the fall degree signaling based on this; the alarm execution module executes operations such as reminders in case of minor falls, voice alarms and local requests for help in case of moderate falls, sound and light alarms and first aid notifications in case of severe falls according to different degree signals, ensuring that the most appropriate and effective rescue response can be provided to users in different fall scenarios, protecting the users' lives and improving the intelligence and practicality of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Further details, features and advantages of the present application are disclosed in the following description of exemplary embodiments in conjunction with the accompanying drawings, in which: Figure 1 It is a principle block diagram of the present invention. DETAILED DESCRIPTION

[0018] Several embodiments of the present application will be described in more detail below with reference to the accompanying drawings so that those skilled in the art can implement the present application. The present application can be embodied in many different forms and purposes and should not be limited to the embodiments described herein. These embodiments are provided to make the present application comprehensive and complete, and to fully convey the scope of the present application to those skilled in the art. The embodiments do not limit the present application.

[0019] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant art and / or the context of this specification, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0020] See also Figure 1 As shown, a fall detection and automatic alarm system applied to a walking stick includes a data acquisition module, a walking stick state analysis module, and a fall monitoring module; A data acquisition module, used to collect dynamic state information of the cane, environmental information and state information of the interaction between the user; wherein the state information includes contact temperature, heart rate, and applied pressure, and the dynamic state information includes acceleration, tilt angle, and applied pressure; The cane state analysis module is used to analyze the cane usage state according to the state information of the interaction between the cane and the user to obtain the cane usage determination value; if the cane usage determination value is greater than its preset usage determination threshold, a cane usage signal is generated and the cane usage time is recorded; and the time zone between the cane usage time and the current time is marked as the cane monitoring time zone; The fall monitoring module is used to analyze any information in the dynamic state information of the cane when generating a cane use signal, specifically: analyze the acceleration of the cane, analyze the inclination angle of the cane, and analyze the pressure applied to the cane to obtain the acceleration shadow value, the inclination angle influence value, and the pressure influence value respectively; fuse the acceleration shadow value, the inclination angle influence value, and the pressure influence value to obtain the fall judgment value of the cane; when the fall judgment value is greater than its preset fall threshold, generate a fall signal; the fall signal is used to trigger a fall alarm operation.

[0021] Specifically, the fall monitoring module includes a warning degree and environment analysis module, a fall degree determination module, and an alarm execution module; The warning degree and environment analysis module is used to receive the fall signaling and analyze the fall degree to obtain the fall impact information; wherein the fall impact information includes the fall duration, wave shadow value, outlier value, use judgment difference and fall impact value; it is also used to analyze the environmental information of the cane to obtain the environmental impact value; the fall impact value and the environmental impact value are weighted to obtain the fall degree value; A fall degree determination module is used to match the fall degree value with the value range of the fall degree group to generate a corresponding fall degree signal; wherein the fall degree group includes slight, moderate, and severe fall degree signal; an alarm execution module is used to receive the fall degree signal to execute the corresponding operation.

[0022] Specifically, the present invention also includes a sensor setting module; the sensor setting module includes a plurality of sensor groups for collecting state information, dynamic state information and environmental information; the sensor group includes a covering contact temperature sensor, a heart rate sensor and a pressure sensor arranged on the top of the walking stick, and an acceleration sensor, an inclination angle sensor and an environmental parameter sensor installed along the axial and vertical directions of the walking stick.

[0023] Specifically, the use status of the cane is analyzed according to the state information of the interaction between the cane and the user. The specific process is as follows: Obtain status information of the top of the cane, including the temperature, heart rate and applied pressure of the top of the cane; Set an ideal value corresponding to any parameter in the status information; perform difference calculation between the numerical value of any parameter in the status information and the ideal value to obtain the ideal difference value BZ1 corresponding to the parameter; Mark the time zone within a preset time length before the current moment as the walking stick monitoring time zone; obtain the ideal difference of any parameter in the state information in the walking stick monitoring time zone, and calculate the mean and standard deviation of the ideal difference of the parameters in the walking stick monitoring time zone to obtain the ideal difference mean BZ2 and the ideal difference fluctuation value BZ3; The ideal extreme value BZ4 is obtained by performing difference calculation on the maximum and minimum ideal differences in the walking stick monitoring time zone; The ideal influence value BZ of the parameter is obtained by weighting the ideal difference, the ideal difference mean, the ideal difference fluctuation value and the ideal extreme value. The formula is: ; Among them, z1, z2, z3 represent the weights corresponding to the ideal difference, ideal difference mean, ideal difference fluctuation value and ideal extreme value of the parameters in the state information respectively; the ideal influence values ​​of all parameters in the state information are weighted to obtain the cane use judgment value B, which is expressed by the formula: ; Among them, n and N represent the number and total number of parameters in the status information respectively, and BZn and na represent the standard influence value of parameter n in the status information and the weight corresponding to the parameter respectively.

[0024] Specifically, the acceleration of the cane is analyzed as follows: Get the acceleration of the cane in any direction in the three-dimensional space, and mark the acceleration of the cane in the x, y, and z axis directions in the three-dimensional space as Gx, Gy, and Gz respectively; Get the preset weight of the cane marked as m; calculate the components of the cane in the x, y, and z axes in three-dimensional space, specifically: Calculate the resultant force component Fx in the x-axis direction, the formula is: ; Calculate the resultant force component Fy in the y-axis direction, the formula is: ; Calculate the resultant force component Fz in the z-axis direction, the formula is:

[0025] Get the resultant force component FG0 in any axis direction at any adjacent time in the cane monitoring time zone; The mean and standard deviation of the resultant force components at any adjacent moments in the walking stick monitoring time zone are calculated to obtain the mean value FG1 and the resultant force component fluctuation value FG2 corresponding to the axial direction; the difference between the maximum and minimum resultant force components in the walking stick monitoring time zone is calculated to obtain the resultant force component extreme difference value FG3; The resultant force component at the current moment is weighted with the resultant force component mean, resultant force component fluctuation value, and resultant force component fluctuation value extreme value to obtain the resultant force distribution FG corresponding to the axial direction. The formula is: ; Among them, f0, f1, f2, and f3 represent the weight influence factors corresponding to the resultant force component at the current moment and the mean value of the resultant force component, the fluctuation value of the resultant force component, and the extreme value of the fluctuation value of the resultant force component respectively; The acceleration value F of the cane is obtained by weighting the resultant force in all axial directions. The formula is: ; Among them, n and N represent the number and total number of axis directions respectively, and FGn and ng represent the resultant force distribution in the direction of axis numbered n and the weight corresponding to its direction respectively.

[0026] Specifically, the environmental information of the cane is analyzed as follows: The environmental information of the walking stick is obtained, including temperature, humidity, air quality, and noise; the ideal environmental value of any parameter in the environmental information is set according to the physiological comfort range and safety requirements of the human body, and the numerical value of any parameter in the environmental information is calculated to obtain the environmental difference with the ideal environmental value corresponding to the parameter; the mean and standard deviation of the environmental difference in the monitoring time zone of the walking stick are calculated to obtain the mean environmental difference and the fluctuation value of the environmental difference; the environmental difference, the mean environmental difference, and the fluctuation value of the environmental difference of the parameters in the environmental information are weighted to obtain the environmental difference shadow value corresponding to the parameter; the environmental difference shadow values ​​of all parameters in the environmental information are weighted to obtain the environmental impact value.

[0027] Specifically, the inclination angle of the cane is analyzed as follows: The walking stick monitoring time zone is equally divided into several tilt monitoring time zones, the tilt angle between the top and bottom of the walking stick at any moment in the tilt monitoring time zone is obtained, and the tilt angles at adjacent moments in the tilt monitoring time zone are calculated to obtain the tilt difference; the mean and standard deviation of the tilt difference in the tilt monitoring time zone are calculated to obtain the tilt difference mean and tilt difference fluctuation value; the minimum and maximum tilt difference in the tilt monitoring time zone are calculated to obtain the tilt extreme difference value; the tilt difference mean, tilt difference fluctuation value and tilt extreme difference value are weighted to obtain the zone tilt value QU; The inclination values ​​of all inclination monitoring time zones in the walking stick monitoring time zone are weighted to obtain the inclination influence value Q, which is expressed by the formula: ; Among them, u and H represent the number and quantity of the inclination monitoring time zone in the walking stick monitoring time zone, respectively, and QUu and ub represent the zone inclination value corresponding to the inclination monitoring time zone numbered u and its corresponding weight, respectively.

[0028] Specifically, the pressure applied by the cane is analyzed as follows: Obtain the applied pressure JY1 of the cane at any time in the cane monitoring time zone, calculate the average of the applied pressure in the cane monitoring time zone to obtain the average pressure value JY2; calculate the difference between the maximum and minimum applied pressures in the cane monitoring time zone to obtain the pressure extreme difference value JY3; The pressure applied closest to the current moment in the cane monitoring time zone is weighted with the average pressure value and the pressure extreme difference value to obtain the pressure impact value JY, which is expressed by the formula: ; Among them, y1, y2, and y3 represent the weights corresponding to the applied pressure, the average pressure value, and the pressure extreme difference value, respectively.

[0029] Specifically, the degree of fall is analyzed as follows: Mark the moment when the fall signal is generated as the fall moment, and mark the time zone between the current moment and the initial moment as the fall time zone; calculate the time length of the fall time zone to obtain the fall duration DF1; Obtain the cane use determination value output by the cane state analysis module; construct a broken line change diagram of the cane fall state, input the cane use determination value at any time in the fall time zone into the broken line change diagram, and mark the position of the cane use determination value in the broken line change diagram as a use point; connect adjacent use points to obtain a use line, and calculate the slope of the use line; mark a positive slope as a positive slope value, and mark the absolute value of a negative slope as a negative slope value; sum up all positive slope values ​​and negative slope values ​​in the fall time zone and calculate the absolute value to obtain a positive slope total value and a negative slope total value; perform weighted processing on the positive slope total value and the negative slope total value to obtain a wave shadow value DF2; Set a slope change threshold, and mark the usage lines corresponding to the positive slope values ​​and negative slope values ​​greater than the slope change threshold as abnormal change lines; record the number of abnormal change lines in the fall time zone and mark it as an abnormal value DF3; Obtain the cane use determination value at any time in the fall time zone, and calculate the difference between the maximum and minimum cane use determination values ​​in the fall time zone to obtain the use determination difference DF4; The fall duration, wave shadow value, outlier value and use judgment difference are weighted to obtain the fall impact value DF, which is expressed by the formula: ; Among them, d1, d2, d3, and d4 respectively represent the weights corresponding to the fall duration, wave shadow value, outlier value, and usage judgment difference; the fall duration, wave shadow value, outlier value, usage judgment difference, and fall impact value are marked as fall impact information.

[0030] Specifically, receiving the fall degree signaling to perform corresponding operations is specifically: When a signal of a slight fall is generated, a short prompt and slight vibration are issued, and at the same time, the slight fall information including the time of signal generation and the current position of the cane is sent to the application associated with the cane through wireless communication for viewing; it should be noted that the short prompt is set to a gentle sound that can attract the user's attention, such as two "beep-beep" sounds, with a frequency of 800Hz-1000Hz and a volume of about 60-70 decibels, to ensure that the user can hear it clearly in a quiet environment, but it will not be too harsh to scare the user; the intensity of slight vibration can be set to make the cane produce an acceleration change of about 0.2-0.3g (g is the acceleration of gravity), lasting about 1-2 seconds. This degree of vibration can be felt by the user, but will not affect the user's restabilization due to excessive vibration; When generating a signaling signal of a moderate fall, a voice alarm is issued, a local rescue number is dialed, and a preset rescue notification is played. At the same time, the moderate fall information is sent to the application associated with the cane and the corresponding smart device; it should be noted that the preset voice alarm operation content can be "Attention! The user has fallen, please help the people around!", the voice tone should be clear, loud and moderate, about 3-4 words per second, and the volume can be set to 80-90 decibels to ensure that it can be clearly heard by the surrounding people within a radius of 10-15 meters; the preset local rescue number can be set to a community service center, a nearby neighbor, or other pre-set numbers that can provide on-site assistance; when dialing the local rescue number, the preset rescue notification played can be "This is the fall alarm of [cane user name], he fell near [cane current location information], the situation is a moderate fall, please go to help as soon as possible." The location information is conveyed in a clear and accurate manner, such as a specific street address or longitude and latitude coordinates; When a severe fall degree signal is generated, an audible and visual alarm is issued, the emergency center is dialed and an emergency rescue notification is played, an emergency notification is sent to the emergency contact, and the severe fall information is sent to the application associated with the cane and the corresponding smart device; It should be noted that the preset sound and light alarm operation is specifically as follows: the light can use a high-brightness red LED light, flashing at a frequency of 3-4 times per second, with a brightness of up to 100-200 lumens, to ensure that it can attract the attention of people around in a dimly lit environment; the sound alarm uses a high-frequency and loud alarm sound, with a frequency of 1000Hz-2000Hz and a volume of 100-120 decibels, and the alarm continues until it is manually turned off or emergency personnel arrive; When you call the emergency center, the preset rescue notification played is "This is an emergency call. [Name of the cane user] has had a serious fall at [current location of the cane]. He may be seriously injured. Please come to rescue as soon as possible." At the same time, the serious fall information is automatically sent to the emergency center system, including fall impact information, environmental impact value, etc.; notifications can be sent in a variety of ways, such as SMS and application push notifications.

[0031] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fall detection and automatic alarm system applied to a walking stick, applied to a walking stick, characterized in that: Including data acquisition module, cane status analysis module, and fall monitoring module; A data acquisition module, used to collect dynamic state information of the cane, environmental information and state information of the interaction between the user; wherein the state information includes contact temperature, heart rate, and applied pressure, and the dynamic state information includes acceleration, tilt angle, and applied pressure; The cane state analysis module is used to analyze the cane usage state according to the state information of the interaction between the cane and the user to obtain the cane usage determination value; if the cane usage determination value is greater than its preset usage determination threshold, a cane usage signal is generated and the cane usage time is recorded; and the time zone between the cane usage time and the current time is marked as the cane monitoring time zone; The fall monitoring module is used to analyze any information in the dynamic state information of the cane when generating a cane use signal, specifically: analyze the acceleration of the cane, analyze the inclination angle of the cane, and analyze the pressure applied to the cane to obtain the acceleration shadow value, the inclination angle influence value, and the pressure influence value respectively; fuse the acceleration shadow value, the inclination angle influence value, and the pressure influence value to obtain the fall judgment value of the cane; when the fall judgment value is greater than its preset fall threshold, generate a fall signal; the fall signal is used to trigger a fall alarm operation.

2. A fall detection and automatic alarm system for a walking stick according to claim 1, characterized in that: The fall monitoring module includes a warning degree and environment analysis module, a fall degree determination module, and an alarm execution module; The warning degree and environment analysis module is used to receive the fall signaling and analyze the fall degree to obtain the fall impact information; wherein the fall impact information includes the fall duration, wave shadow value, outlier value, use judgment difference and fall impact value; it is also used to analyze the environmental information of the cane to obtain the environmental impact value; the fall impact value and the environmental impact value are weighted to obtain the fall degree value; A fall degree determination module is used to match the fall degree value with the value range of the fall degree group to generate a corresponding fall degree signal; wherein the fall degree group includes slight, moderate, and severe fall degree signal; an alarm execution module is used to receive the fall degree signal to execute the corresponding operation.

3. A fall detection and automatic alarm system for a walking stick according to claim 1, characterized in that: It also includes a sensor setting module; the sensor setting module includes a plurality of sensor groups for collecting state information, dynamic state information and environmental information; the sensor group includes a covering contact temperature sensor, a heart rate sensor and a pressure sensor arranged on the top of the cane, and an acceleration sensor, an inclination angle sensor and an environmental parameter sensor installed along the axial and vertical directions of the cane.

4. A fall detection and automatic alarm system for a walking stick according to claim 1, characterized in that: The usage status of the cane is analyzed based on the status information of the interaction between the cane and the user. The specific process is as follows: Obtain status information of the top of the cane, including the temperature, heart rate and applied pressure of the top of the cane; Set the ideal value corresponding to any parameter in the status information; The difference between the value of any parameter in the state information and the ideal value is calculated to obtain the ideal difference corresponding to the parameter; Mark the time zone within a preset time length before the current moment as the cane monitoring time zone; Obtain an ideal difference value of any parameter in the state information within the walking stick monitoring time zone, and calculate the mean and standard deviation of the ideal difference value of the parameter within the walking stick monitoring time zone to obtain an ideal difference mean value and an ideal difference fluctuation value; The ideal extreme value is obtained by performing difference calculation on the maximum and minimum ideal differences in the walking stick monitoring time zone; The ideal influence value of the parameter is obtained by weighting the ideal difference, the ideal difference mean, the ideal difference fluctuation value and the ideal extreme value; The ideal influence values ​​of all parameters in the state information are weighted to obtain the cane use judgment value.

5. A fall detection and automatic alarm system for a walking stick according to claim 1, characterized in that: The acceleration of the cane is analyzed as follows: Get the acceleration of the cane in any direction in three-dimensional space, and convert the acceleration of the cane in the x, y, and z directions in three-dimensional space; Obtain the preset weight of the cane, calculate the components of the cane in the x, y, and z axis directions in three-dimensional space, and calculate the resultant force components in the x, y, and z axis directions respectively; obtain the resultant force components in any axis direction at any adjacent time in the cane monitoring time zone; The mean and standard deviation of the resultant force components at any adjacent moments in the walking stick monitoring time zone are calculated to obtain the mean and fluctuation values ​​of the resultant force components corresponding to the axial direction; the difference between the maximum and minimum resultant force components in the walking stick monitoring time zone is calculated to obtain the extreme difference value of the resultant force components; The resultant force component at the current moment is weighted with the resultant force component mean, resultant force component fluctuation value, and resultant force component fluctuation value extreme difference value to obtain the resultant force distribution corresponding to the axial direction; The resultant force components in all axial directions are weighted to obtain the acceleration value of the cane.

6. A fall detection and automatic alarm system for a walking stick according to claim 2, characterized in that: Analyze the environmental information of the cane, specifically: The environmental information of the walking stick is obtained, including temperature, humidity, air quality, and noise; the ideal environmental value of any parameter in the environmental information is set, and the difference between the numerical value of any parameter in the environmental information and the ideal environmental value corresponding to the parameter is calculated to obtain the environmental difference; the mean and standard deviation of the environmental difference in the walking stick monitoring time zone are calculated to obtain the environmental difference mean and environmental difference fluctuation value; the environmental difference, environmental difference mean, and environmental difference fluctuation value of the parameters in the environmental information are weighted to obtain the environmental difference shadow value corresponding to the parameter; the environmental difference shadow values ​​of all parameters in the environmental information are weighted to obtain the environmental impact value.

7. A fall detection and automatic alarm system for a walking stick according to claim 1, characterized in that: The inclination angle of the cane is analyzed as follows: The walking stick monitoring time zone is equally divided into several tilt monitoring time zones, the tilt angle between the top and bottom of the walking stick at any moment in the tilt monitoring time zone is obtained, and the tilt angles at adjacent moments in the tilt monitoring time zone are calculated to obtain the tilt difference; the tilt difference in the tilt monitoring time zone is calculated to have a mean and standard deviation, and the tilt difference mean and tilt difference fluctuation value are obtained; the minimum and maximum tilt differences in the tilt monitoring time zone are calculated to have a tilt extreme difference; the tilt difference mean, tilt difference fluctuation value, and tilt extreme difference value are weighted to obtain the zone tilt value; The inclination values ​​of all inclination monitoring time zones within the walking stick monitoring time zone are weighted to obtain the inclination influence value.

8. A fall detection and automatic alarm system for a walking stick according to claim 1, characterized in that: The pressure applied by the cane was analyzed as follows: Obtain the applied pressure of the cane at any time in the cane monitoring time zone, calculate the average of the applied pressure in the cane monitoring time zone to obtain the average pressure value J; calculate the difference between the maximum and minimum applied pressures in the cane monitoring time zone to obtain the pressure extreme difference value; The pressure applied closest to the current moment in the cane monitoring time zone is weighted together with the average pressure value and the extreme pressure difference value to obtain the pressure impact value.

9. A fall detection and automatic alarm system for a walking stick according to claim 1, characterized in that: The degree of falls was analyzed as follows: Mark the moment when the fall signal is generated as the fall moment, mark the time zone between the current moment and the initial moment as the fall time zone; calculate the time length of the fall time zone to obtain the fall duration; Obtain the cane use determination value output by the cane state analysis module; construct a broken line change diagram of the cane fall state, input the cane use determination value at any time in the fall time zone into the broken line change diagram, and mark the position of the cane use determination value in the broken line change diagram as a use point; connect adjacent use points to obtain a use line, and calculate the slope of the use line; mark a positive slope as a positive slope value, and mark the absolute value of a negative slope as a negative slope value; sum up all positive slope values ​​and negative slope values ​​in the fall time zone and calculate the absolute value to obtain a positive slope total value and a negative slope total value; perform weighted processing on the positive slope total value and the negative slope total value to obtain a wave shadow value; Set a slope change threshold, mark the usage lines corresponding to the positive slope values ​​and negative slope values ​​greater than the slope change threshold as abnormal change lines; record the number of abnormal change lines in the fall time zone and mark it as an abnormal value; Obtaining a cane use determination value at any time in the fall time zone, and calculating the difference between the maximum and minimum cane use determination values ​​in the fall time zone to obtain a use determination difference; The fall duration, wave shadow value, outlier value and usage judgment difference are weighted to obtain the fall impact value; the fall duration, wave shadow value, outlier value, usage judgment difference and fall impact value are marked as fall impact information.

10. A fall detection and automatic alarm system for a walking stick according to claim 2, characterized in that: Receive the fall degree signaling to perform corresponding operations, specifically: When a minor fall degree signal is generated, a brief prompt and a slight vibration are issued, and at the same time, the minor fall information including the time of signal generation and the current position of the cane is sent to the application associated with the cane through wireless communication for viewing; When a moderate fall degree signal is generated, a voice alarm is issued, a local rescue number is dialed, and a preset rescue notification is played. At the same time, the moderate fall information is sent to the application associated with the cane and the corresponding smart device; When a severe fall degree signal is generated, an audible and visual alarm is issued, the emergency center is dialed and an emergency rescue notification is played, an emergency notification is sent to the emergency contact, and the severe fall information is sent to the application associated with the cane and the corresponding smart device.

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