CN111210595A - Human body falling detection and warning method, device and computer readable storage medium - Google Patents
Human body falling detection and warning method, device and computer readable storage medium Download PDFInfo
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- CN111210595A CN111210595A CN202010044112.2A CN202010044112A CN111210595A CN 111210595 A CN111210595 A CN 111210595A CN 202010044112 A CN202010044112 A CN 202010044112A CN 111210595 A CN111210595 A CN 111210595A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0407—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis
- G08B21/043—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis detecting an emergency event, e.g. a fall
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0438—Sensor means for detecting
- G08B21/0446—Sensor means for detecting worn on the body to detect changes of posture, e.g. a fall, inclination, acceleration, gait
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
Abstract
The embodiment of the invention relates to a human body falling detection and warning method, a human body falling detection and warning device and a computer readable storage medium.A device is small in size and can be directly worn on the waist without causing discomfort to a wearer by a human body falling detection and warning device consisting of a microcontroller, an MPU-6050 module and a GSM module. The technical problems that the existing human body falling detection and alarm device is complex in structure, multiple in required accessories, inconvenient to carry by a user, inconvenient to use by the user, not high in detection accuracy of a falling detection part, easy to cause false information transmission and troublesome to a guardian or a monitoring center are solved.
Description
Technical Field
The invention relates to the technical field of detection, in particular to a human body falling detection and warning method, a human body falling detection and warning device and a computer readable storage medium.
Background
In recent years, the aging social phenomenon has become a hot topic, and the young people often have unrealistic whole-course monitoring to the old people due to work. The old people with certain self-care ability can choose independent life and often carry out outdoor activities such as walking and the like. In this context, falls of elderly people can cause many safety problems, such as: falls cause brain injury, soft tissue injury, fractures, dislocations, and the like, with the most severe being hip fractures. So far, there are few cases of adverse consequences caused by careless fall and no timely rescue in the elderly population.
The existing human body falling detection and alarm device has a complex structure, needs more accessories, is inconvenient for a user to carry, brings inconvenience to the user, has low detection accuracy of a falling detection part, is easy to cause false information transmission, and causes troubles to a guardian or a monitoring center; and when the wearer falls down, the microprocessor sends GPS positioning information and an emergency signal to the guardian or the monitoring center, and the defect that the detection accuracy of the fall detection part is not high enough, false information is easy to send, and troubles are caused to the guardian or the monitoring center.
Therefore, in view of the above circumstances, how to make the human body fall detection and alarm device have a simple structure and are convenient for a user to carry, the use of the user is convenient, and the improvement of the accuracy of fall detection becomes an important technical problem to be solved urgently by the technical staff in the field.
Disclosure of Invention
The embodiment of the invention provides a human body falling detection and warning method, a human body falling detection and warning device and a computer readable storage medium, which are used for solving the technical problems that the existing human body falling detection and warning device is complex in structure, needs more accessories, is inconvenient for a user to carry, brings inconvenience to the user, is not high in detection accuracy of a falling detection part, easily causes false information transmission and causes troubles to a guardian or a monitoring center.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
a human body falling detection and warning method is applied to human body falling detection and warning equipment, the human body falling detection and warning equipment comprises a microcontroller and an MPU-6050 module and a GSM module which are connected with the microcontroller, the microcontroller comprises a memory and a processor, the memory stores a computer program, and the processor executes the computer program to realize the following steps:
s1, acquiring linear acceleration and angular acceleration of a human body to be detected by adopting the MPU-6050 module, and transmitting the acquired linear acceleration and the acquired angular acceleration to the microcontroller;
s2, the microcontroller calculates the linear acceleration through a linear acceleration amplitude value formula to obtain a first linear acceleration amplitude value;
s3, if the first linear acceleration amplitude value is larger than 2g, the microcontroller judges that the human body is in a pre-falling state, the microcontroller obtains the linear acceleration and the angular acceleration of the human body after the preset delay T, and a second linear acceleration amplitude value is obtained through calculation of the linear acceleration amplitude value formula;
s4, if the second linear acceleration amplitude value is larger than 2g, the microcontroller judges that the human body does not fall down when in violent movement; if the second linear acceleration amplitude value is not larger than 2g and the angular acceleration of the human body in the front-back direction or the left-right direction is larger than a preset angular velocity threshold value, the microcontroller judges that the human body falls down;
s5, judging that the human body falls down according to the microcontroller, wherein the microcontroller gives out alarm sound and sends the position positioning information of the human body to a guardian and a phone to the guardian through a GSM module;
the GSM module stores contact information of the guardian.
Preferably, the human body falling detection and warning device further comprises a GPS module connected with the microcontroller, the GPS module is used for receiving a C/a code from a GPS satellite system, the microcontroller calculates the current geographic location information of the human body according to the C/a code, and the microcontroller sends the location information and the edited distress information to the mobile terminal of the guardian through the GSM module by using a short message.
Preferably, the human body falling detection and warning device further comprises an alarm module connected with the microcontroller, and the alarm module is used for giving an alarm sound to attract the attention of people around the human body. Wherein, the alarm module comprises a buzzer or a loudspeaker for emitting sound.
Preferably, the MPU-6050 module is used for acquiring linear acceleration and angular acceleration of the human body in the x direction, the y direction and the z direction. Wherein, the x direction is the left and right direction of the human body, the y direction is the front and back direction of the human body, and the z direction is the vertical direction of the human body
Preferably, the linear acceleration amplitude value is represented as SVM, and the formula is:
wherein, axLinear acceleration of the human body in the x direction, ayLinear acceleration in the y-direction of the human body, azThe magnitude of the linear acceleration amplitude value is used for representing the intensity of the motion state of the human body.
Preferably, the microcontroller is a micro control unit of model MSP430F 149.
Preferably, the delay T is 3 s.
The invention also provides a human body falling detection and warning device, which is applied to human body falling detection and warning equipment and comprises the following components:
the data acquisition unit is used for acquiring the linear acceleration and the angular acceleration of the human body to be detected by adopting an MPU-6050 module and transmitting the acquired linear acceleration and the acquired angular acceleration to the microcontroller;
the calculation unit is used for calculating the linear acceleration in the microcontroller according to a linear acceleration amplitude value formula to obtain a first linear acceleration amplitude value;
the first judgment unit is used for judging that the human body is in a pre-falling state according to the fact that the first linear acceleration amplitude value is larger than 2g, and obtaining a second linear acceleration amplitude value by adopting the data acquisition unit and the calculation unit after time delay T;
the second judgment unit is used for judging that the human body does not fall down when the human body is in violent movement according to the fact that the second linear acceleration amplitude value is larger than 2 g; the microcontroller is further used for judging that the human body falls down according to the fact that the second linear acceleration amplitude value is not larger than 2g and the angular acceleration of the human body in the front-back direction or the left-right direction is larger than a preset angular velocity threshold;
and the output warning unit is used for judging that the human body falls down according to the microcontroller, and the microcontroller gives out alarm sound and sends the position positioning information of the human body to the guardian and dials a telephone to the guardian through the GSM module.
The invention also provides a computer-readable storage medium for storing program code for performing the method of detecting and warning a human fall as claimed above.
According to the technical scheme, the embodiment of the invention has the following advantages:
1. according to the human body falling detection and warning method, the human body falling detection and warning device composed of the microcontroller, the MPU-6050 module and the GSM module is small in size and can be directly worn on the waist, discomfort can not be caused to a wearer, the human body falling detection and warning method adopts twice judgment on human body falling behaviors, the identification accuracy rate of the falling of the human body is ensured, the device can also automatically dial a telephone and send a short message to a guardian after the human body falls, the guardian can conveniently master the field situation in real time at the first time, and measures are taken in time for rescue. The technical problems that the existing human body falling detection and alarm device is complex in structure, needs more accessories, is inconvenient for a user to carry, brings inconvenience to the user, is not high enough in detection accuracy of a falling detection part, easily causes false information transmission, and causes troubles to a guardian or a monitoring center are solved;
2. this human body falls and detects and warning device passes through the linear acceleration and the angular acceleration of data acquisition unit collection human body, the computational element calculates first linear acceleration amplitude value and second linear acceleration amplitude value through linear acceleration amplitude value formula, first judgement unit carries out twice judgement to first linear acceleration amplitude value and second judgement unit to the action of falling down of human body to the second linear acceleration amplitude value, the discernment rate of accuracy that the human body took place to tumble is ensured to confirm, still adopt output warning unit automatic dialing telephone and send the SMS for the guardian after the human body tumbles, the guardian of being convenient for masters the site conditions in real time very first time, in time take measures and rescue. The technical problems that the existing human body falling detection and alarm device is complex in structure, multiple in required accessories, inconvenient to carry by a user, inconvenient to use by the user, not high in detection accuracy of a falling detection part, easy to cause false information transmission and troublesome to a guardian or a monitoring center are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating steps of a method for detecting and warning a human fall according to an embodiment of the present invention.
Fig. 2 is a frame diagram of the human fall detection and warning apparatus according to the embodiment of the present invention.
Fig. 3 is a frame diagram of the human fall detection and warning device according to the embodiment of the invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the application provides a human body falling detection and warning method, a human body falling detection and warning device and a computer readable storage medium, which are used for solving the technical problems that the existing human body falling detection and warning device is complex in structure, needs more accessories, is inconvenient for a user to carry, brings inconvenience for the user to use, is not high enough in detection accuracy of a falling detection part, easily causes false information to be sent, and causes trouble for a guardian or a monitoring center.
The first embodiment is as follows:
fig. 1 is a flowchart illustrating steps of a method for detecting and warning a human fall according to an embodiment of the present invention.
Fig. 2 is a frame diagram of the human fall detection and warning apparatus according to the embodiment of the present invention.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a human body fall detection and warning method, which is applied to a human body fall detection and warning device, the human body fall detection and warning device includes a microcontroller 10 and an MPU-6050 module 20 and a GSM module 30 connected to the microcontroller 10, the microcontroller 10 includes a memory 11 and a processor 12, the memory 11 stores a computer program, and the processor 12 implements the following steps when executing the computer program:
s1, acquiring linear acceleration and angular acceleration of a human body to be detected by adopting an MPU-6050 module, and transmitting the acquired linear acceleration and angular acceleration to a microcontroller;
s2, the microcontroller calculates the linear acceleration through a linear acceleration amplitude value formula to obtain a first linear acceleration amplitude value;
s3, if the first linear acceleration amplitude value is larger than 2g, the microcontroller judges that the human body is in a pre-falling state, the microcontroller acquires the linear acceleration and the angular acceleration of the human body after the preset delay T, and the second linear acceleration amplitude value is obtained through calculation by a linear acceleration amplitude value formula;
s4, if the second line acceleration amplitude value is larger than 2g, the microcontroller judges that the human body is in violent movement and does not fall down; if the second linear acceleration amplitude value is not larger than 2g and the angular acceleration of the human body in the front-back direction or the left-right direction is larger than the threshold value of the preset angular velocity, the microcontroller judges that the human body falls down;
s5, judging that the human body falls down according to the microcontroller, sending an alarm by the microcontroller, and sending the position positioning information of the human body to a guardian and calling the guardian through the GSM module;
the GSM module stores contact information of the guardian.
In the embodiment of the present invention, a user wears the MPU-6050 module 20 to complete the acquisition of linear acceleration and angular acceleration signals in three directions, namely, the x direction, the y direction and the z direction, of a human body for detecting the angular acceleration and the linear acceleration of the human body, the data acquired by the MPU-6050 module 20 is transmitted to the microcontroller 10 through an IIC bus protocol, and the microcontroller 10 processes the data through a calculation formula of a linear acceleration amplitude value; if the first linear acceleration amplitude value is greater than 2g, the microcontroller 10 determines that the human body is a pre-falling behavior, the microcontroller 10 processes the linear acceleration and angular acceleration data acquired again by the MPU-6050 module 20 through a calculation formula of the linear acceleration amplitude value after delaying for 3 seconds, and if the second linear acceleration amplitude value is greater than 2g, the microcontroller 10 determines that the human body is in violent movement and does not fall; if the second linear acceleration amplitude value is not larger than 2g and the angular acceleration in the x direction or the y direction of the human body is larger than the threshold value of the preset angular velocity, the microcontroller 10 judges that the human body is in a falling behavior, the microcontroller 10 sends the position information of the current geography where the human body is located of the human body to the GSM module 30, the GSM module 30 sends the position information and the edited emergency short message to the mobile phone of the guardian and makes a call to the guardian, so that the guardian can conveniently master the field situation in real time at the first time and take measures for rescue in time.
It should be noted that the microcontroller 10 preferably adopts an ultra-low power consumption 16-bit MSP430 series MSP430F149 model single chip microcomputer of TI company, the MSP430F149 single chip microcomputer is an ultra-low power consumption MCU based on flash memory or ROM, provides 8MIPS, has a working voltage of 1.8V-3.6V, has a flash memory up to 60KB and various high-performance analog and intelligent digital peripherals, and has the characteristics of strong processing capability, fast operation speed and ultra-low power consumption. The MSP430F149 has a powerful low-power mode design, in which the current consumption is much smaller than the AM (active state) mode; and the device has the advantages of small volume, low power consumption and strong processing capability. Wherein, the x direction is the left and right direction of the human body, the y direction is the front and back direction of the human body, and the z direction is the vertical direction. The microcontroller 10 calculates and processes the linear acceleration and the angular acceleration in three directions acquired by the MPU-6050 module 20 through a linear acceleration amplitude value formula to obtain a linear acceleration amplitude value, and compares the linear acceleration amplitude value with a value 2g of the human body in normal activity to judge whether the human body falls down. The delay T is preferably 3 s.
According to the human body falling detection and warning method provided by the invention, the human body falling detection and warning equipment consisting of the microcontroller, the MPU-6050 module and the GSM module has a small volume, can be directly worn on the waist, and does not cause discomfort for a wearer. The technical problems that the existing human body falling detection and alarm device is complex in structure, multiple in required accessories, inconvenient to carry by a user, inconvenient to use by the user, not high in detection accuracy of a falling detection part, easy to cause false information transmission and troublesome to a guardian or a monitoring center are solved.
In an embodiment of the present invention, the human body falling detection and warning device further includes a GPS module 40 connected to the microcontroller 10, the GPS module 40 is configured to receive a C/a code from a GPS satellite system, the microcontroller 10 calculates location information of a current geographic location of the human body according to the C/a code, and the microcontroller sends the location information and edited distress information to the mobile terminal of the guardian through the GSM module 30 by using a short message.
It should be noted that the GPS module 40 is in communication with the microcontroller 10 by serial communication. Specifically, the data transmission between the GPS module 40 and the microcontroller 10 can be realized by connecting the GPS module 40 with TxD, RxD, PPS interfaces of a MSP430F149 type single chip microcomputer. The GPS module 10 can receive a C/A code from a GPS satellite system, the MSP430F149 type single chip microcomputer calculates the current geographic information position of the human body according to the C/A code, and the position information is sent to the mobile terminal of the guardian through the GSM module 30 after the short message is edited. The mobile terminal may preferably be a handset. In this embodiment, the GSM module 40 has the characteristics of small size, ultra-low power consumption, and wide operating temperature range, and supports the functions of voice communication and SMS short message, and the communication between the GSM module 40 and the MSP430F149 type single chip microcomputer can be realized by adopting conventional serial communication. When a human body falls down, the MSP430F149 type single chip microcomputer interrupts to trigger the GSM module 40, sends SMS emergency messages to inform a guardian of the situation, and the voice function automatically dials a preset guardian number to enable the guardian to master the field situation in real time and take measures to rescue in time.
In an embodiment of the present invention, the human body fall detection and warning device further comprises an alarm module 50 connected to the microcontroller 10, wherein the alarm module 50 is configured to send an alarm sound to attract the attention of people around the human body. Wherein the alarm module 50 includes a buzzer or a speaker for emitting sound.
It should be noted that the alarm module 50 is mainly composed of a buzzer, and has a simple structure, and the microcontroller 10 only needs to provide pulses to make the buzzer sound an alarm, so as to be convenient for attracting the attention of surrounding people, thereby seeking help to the surrounding people. Specifically, the microcontroller 10 triggers an interrupt and the buzzer sounds an alarm to alert surrounding people.
In one embodiment of the invention, the MPU-6050 module 20 is used for acquiring linear acceleration and angular acceleration of the human body in the x direction, the y direction and the z direction; the x direction is the left and right direction of the human body, the y direction is the front and back direction of the human body, and the z direction is the vertical direction of the human body.
It should be noted that the MPU-6050 module 20 integrates a 3-axis accelerator and a 3-axis gyroscope, and the 3-axis accelerator and the 3-axis gyroscope can measure linear acceleration and angular acceleration in the x direction, the y direction, and the z direction, respectively. The MPU-6050 module 20 and the microcontroller 10 communicate by adopting a standard IIC communication protocol, and the MPU-6050 module 20 and an MSP430F149 type single-chip microcomputer are connected with I/O interfaces of SCK, SDA and INT, so that data transmission between the MPU-6050 module 20 and the microcontroller 10 can be realized. The built-in 16-bit AD converter of the MPU-6050 module 20 does not need external AD and DA converters, and has simple structure and simple and convenient operation. The angular acceleration and the linear acceleration worn by the user can be acquired by an MPU-6050 module, and the system has extremely low manufacturing cost and high precision.
In an embodiment of the present invention, the linear acceleration amplitude value is denoted as SVM, and its formula is:
wherein, axLinear acceleration of the human body in the x direction, ayLinear acceleration in the y-direction of the human body, azLinear acceleration in the z direction of the human body; the magnitude of the linear acceleration amplitude value is used for representing the intensity of the motion state of the human body.
It should be noted that the magnitude of the linear acceleration amplitude value reflects the intensity of the human motion state, and the threshold of the linear acceleration amplitude value is set to be 2g for the practical situation that the activity frequency of the elderly is low and the intensity is not high. When the human body falls forwards or backwards, the x-axis angle of the human body is about-90 degrees and 90 degrees; similarly, when a person falls to the left or right, the y-axis angle of the person should float around-90 ° and 90 °. Therefore, in the step S4, the threshold value of the preset angular velocity is designed to be 75 as the second determination condition threshold value.
Example two:
fig. 3 is a frame diagram of the human fall detection and warning device according to the embodiment of the invention.
As shown in fig. 3, an embodiment of the present invention provides a human body fall detection and warning device, which is applied to a human body fall detection and warning device, and includes:
the data acquisition unit 101 is used for acquiring the linear acceleration and the angular acceleration of the human body to be detected by adopting an MPU-6050 module and transmitting the acquired linear acceleration and the acquired angular acceleration to the microcontroller;
the calculation unit 102 is configured to calculate the linear acceleration in the microcontroller according to a linear acceleration amplitude value formula to obtain a first linear acceleration amplitude value;
the first judging unit 103 is used for judging that the human body is in a pre-falling state according to the fact that the first linear acceleration amplitude value is larger than 2g, and obtaining a second linear acceleration amplitude value by adopting the data acquisition unit and the calculating unit after time delay T;
the second judging unit 104 is configured to judge that the human body is in strenuous exercise and does not fall down according to the second linear acceleration amplitude value being greater than 2 g; the microcontroller is further used for judging that the human body falls down according to the fact that the second linear acceleration amplitude value is not larger than 2g and the angular acceleration of the human body in the front-back direction or the left-right direction is larger than a preset angular velocity threshold;
and the output warning unit 105 is used for judging that the human body falls down according to the microcontroller, and the microcontroller gives out alarm sound and sends the position positioning information of the human body to the guardian and dials a telephone to the guardian through the GSM module.
It should be noted that, a user wears the MPU-6050 module 20 to complete the acquisition of linear acceleration and angular acceleration signals in three directions, namely, the x direction, the y direction and the z direction, of a human body for detecting the angular acceleration and the linear acceleration of the human body, the data acquisition unit 101 adopts the MPU-6050 module 20 to acquire data and transmit the data to the microcontroller 10, and the microcontroller 10 adopts the calculation unit 102 to process the data by using a calculation formula of a linear acceleration amplitude value; the first judgment unit 103 is used for judging the falling behavior of the human body for the first time, if the first linear acceleration amplitude value is greater than 2g, the microcontroller 10 judges that the human body is the pre-falling behavior, and after 3 seconds, the microcontroller 10 processes the linear acceleration and angular acceleration data acquired again by the MPU-6050 module 20 through a calculation formula of the linear acceleration amplitude value. The second judgment unit 104 is used for carrying out second judgment on the falling behavior of the human body, and if the second linear acceleration amplitude value is larger than 2g, the microcontroller 10 judges that the human body does not fall down when the human body is in violent movement; if the second linear acceleration amplitude value is not greater than 2g and the angular acceleration in the x direction or the y direction of the human body is greater than the threshold value of the preset angular velocity, the microcontroller 10 judges that the human body is in a falling behavior, the output warning unit 105 is adopted to send the position information of the current geography where the human body is located to the GSM module 30 through the microcontroller 10, the GSM module 30 sends the position information and the edited emergency short message to the mobile phone of the guardian, and the mobile phone is dialed for the guardian, so that the guardian can conveniently master the site situation in real time at the first time and take measures to rescue in time.
According to the human body falling detection and warning device, the linear acceleration and the angular acceleration of a human body are acquired through the data acquisition unit, the calculation unit calculates the first linear acceleration amplitude value and the second linear acceleration amplitude value through the linear acceleration amplitude value formula, the first judgment unit judges the falling behavior of the human body twice through the first linear acceleration amplitude value and the second linear acceleration amplitude value, the identification accuracy rate of the falling of the human body is ensured, the output warning unit is adopted to automatically dial a call and send a short message to a guardian after the human body falls, the guardian can conveniently master the site situation in real time at the first time, and measures are taken for rescue in time. The technical problems that the existing human body falling detection and alarm device is complex in structure, multiple in required accessories, inconvenient to carry by a user, inconvenient to use by the user, not high in detection accuracy of a falling detection part, easy to cause false information transmission and troublesome to a guardian or a monitoring center are solved.
Example three:
an embodiment of the present invention provides a computer-readable storage medium for storing program codes for executing the method for detecting and warning a human fall as claimed above.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A human body falling detection and warning method is applied to human body falling detection and warning equipment and is characterized in that the human body falling detection and warning equipment comprises a microcontroller and an MPU-6050 module and a GSM module which are connected with the microcontroller, the microcontroller comprises a memory and a processor, the memory stores a computer program, and the processor executes the computer program to realize the following steps:
s1, acquiring linear acceleration and angular acceleration of a human body to be detected by adopting the MPU-6050 module, and transmitting the acquired linear acceleration and the acquired angular acceleration to the microcontroller;
s2, the microcontroller calculates the linear acceleration through a linear acceleration amplitude value formula to obtain a first linear acceleration amplitude value;
s3, if the first linear acceleration amplitude value is larger than 2g, the microcontroller judges that the human body is in a pre-falling state, the microcontroller obtains the linear acceleration and the angular acceleration of the human body after the preset delay T, and a second linear acceleration amplitude value is obtained through calculation of the linear acceleration amplitude value formula;
s4, if the second linear acceleration amplitude value is larger than 2g, the microcontroller judges that the human body does not fall down when in violent movement; if the second linear acceleration amplitude value is not larger than 2g and the angular acceleration of the human body in the front-back direction or the left-right direction is larger than a preset angular velocity threshold value, the microcontroller judges that the human body falls down;
s5, judging that the human body falls down according to the microcontroller, wherein the microcontroller gives out alarm sound and sends the position positioning information of the human body to a guardian and a phone to the guardian through a GSM module;
the GSM module stores contact information of the guardian.
2. The human body falling detection and warning method as claimed in claim 1, wherein the human body falling detection and warning device further comprises a GPS module connected to the microcontroller, the GPS module is configured to receive a C/a code from a GPS satellite system, the microcontroller calculates location information of a current geographic location of the human body according to the C/a code, and the microcontroller sends the location information and the edited distress information to the monitor mobile terminal through the GSM module by using a short message.
3. The human body fall detection and warning method as claimed in claim 1, further comprising an alarm module connected to the microcontroller, the alarm module being configured to sound an alarm to attract the attention of people around the human body.
4. A method for human fall detection and warning as claimed in claim 3, wherein the alarm module comprises a buzzer or speaker for emitting sound.
5. The human body fall detection and warning method according to claim 1, wherein the MPU-6050 module is configured to acquire linear acceleration and angular acceleration of the human body in an x direction, a y direction and a z direction;
the x direction is the left and right direction of the human body, the y direction is the front and back direction of the human body, and the z direction is the vertical direction of the human body.
6. A method for detecting and warning a human fall according to claim 1, wherein the linear acceleration amplitude value is represented as SVM, and the formula is:
wherein, axLinear acceleration of the human body in the x direction, ayLinear acceleration in the y-direction of the human body, azThe magnitude of the linear acceleration amplitude value is used for representing the intensity of the motion state of the human body.
7. A method of human fall detection and alert as claimed in claim 1, wherein the microcontroller is a model MSP430F149 microcontroller unit.
8. A method for human fall detection and warning as claimed in claim 1, wherein the delay T is 3 s.
9. The utility model provides a human fall detection and warning device which characterized in that is applied to human fall detection and warning equipment, includes:
the data acquisition unit is used for acquiring the linear acceleration and the angular acceleration of the human body to be detected by adopting an MPU-6050 module and transmitting the acquired linear acceleration and the acquired angular acceleration to the microcontroller;
the calculation unit is used for calculating the linear acceleration in the microcontroller according to a linear acceleration amplitude value formula to obtain a first linear acceleration amplitude value;
the first judgment unit is used for judging that the human body is in a pre-falling state according to the fact that the first linear acceleration amplitude value is larger than 2g, and obtaining a second linear acceleration amplitude value by adopting the data acquisition unit and the calculation unit after time delay T;
the second judgment unit is used for judging that the human body does not fall down when the human body is in violent movement according to the fact that the second linear acceleration amplitude value is larger than 2 g; the microcontroller is further used for judging that the human body falls down according to the fact that the second linear acceleration amplitude value is not larger than 2g and the angular acceleration of the human body in the front-back direction or the left-right direction is larger than a preset angular velocity threshold;
and the output warning unit is used for judging that the human body falls down according to the microcontroller, and the microcontroller gives out alarm sound and sends the position positioning information of the human body to the guardian and dials a telephone to the guardian through the GSM module.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium is configured to store program code for performing the method of human fall detection and warning according to any of claims 1-8.
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