WO2016197385A1 - Alarm system and method capable of monitoring accidental tumble of human body - Google Patents

Abstract

An alarm system capable of monitoring accidental tumble of a human body. The system comprises a background main control unit (1), a camera unit (3), a sensing unit (2) and an alarm unit (4), wherein the camera unit (3) and the sensing unit (2) are responsible for collecting a video image of the human body and a vibration signal, the background main control unit (1) is used for performing framing processing on the video image of the human body, and judging whether tumble happens, and is further used for judging whether the vibration signal exceeds a pre-set threshold value, and generating, when the tumble happens and the vibration signal exceeds the pre-set threshold value, an alarm signal so as to control the alarm unit (4) to respond and give an alarm. The system improves the accuracy of tumble judgement of a human body, improves system stability, and guarantees a device to work accurately in dark, hot and dry environments and during the night. Furthermore, the system can timely give an alarm through the establishment of a monitoring-enquiry-response-alarm mechanism, make a rescue behaviour, and is of great significance in particular to the nursing of elderly people who live alone.

Description

 Alarm system and method capable of monitoring accidental fall of human body Technical field

The invention belongs to the field of monitoring, and in particular relates to an alarm system and method for monitoring an accidental fall of a human body.

Background technique

At present, in the field of falls monitoring for elderly, patients and dangerous workers at home and abroad, most monitoring devices use wearable portable sensors, such as acceleration and angular velocity sensors, or simpler help call buttons. However, most people are often reluctant to wear a wide variety of sensor devices. After the person falls, the body can't move or the brain loses consciousness. In this case, the help call button also fails. Another way to monitor falls is to use traditional camera monitoring to quickly identify the fall behavior. However, the traditional camera is easy to cause misjudgment because it collects data alone and it is unclear for people such as bending over. At the same time, because the sensor technology used is backward, the accuracy of judgment is low, in the dark, night, hot and other environment. The error rate is higher.

technical problem

The technical problem to be solved by the present invention is to provide an alarm system and method capable of monitoring an accidental fall of a human body, aiming at solving the problem that the existing monitoring equipment has low accuracy and easily leads to misjudgment.

Technical solution

The invention is realized in this way, an alarm system capable of monitoring an accidental fall of a human body, comprising: a background main control unit, an image capturing unit respectively connected to the background main control unit, a sensing unit and an alarm unit;

The camera unit includes a camera for acquiring a human body video image and transmitting the image to the background main control unit;

The sensing unit includes a vibration sensor for collecting a vibration signal of a monitoring environment and transmitting the vibration signal to the background main control unit;

The background control unit is configured to perform frame processing on the human body video image to determine whether a fall behavior occurs; and to determine whether the vibration signal exceeds a preset threshold; and determine that a fall behavior occurs When the vibration signal exceeds the preset threshold, an alarm signal is generated to control the alarm unit to respond to the alarm.

Further, the alarm system further includes a voice unit connected to the background main control unit;

The background control unit enters an alarm state when determining that a fall behavior occurs and the vibration signal exceeds a preset threshold, and generates a voice control command to be sent to the voice unit to control the voice unit to perform voice inquiry;

After receiving the positive voice reply, the voice unit generates an open alarm command to transmit to the background control unit; the background control unit generates an alarm signal according to the open alarm command to control the alarm unit to respond. Call the police;

After receiving the negative voice reply, the voice unit generates a cancel alarm command to transmit to the background control unit; and the background control unit cancels the alarm state according to the cancel alarm command.

Further, the background control unit includes a timing module;

The background control unit sends a voice control command to the voice unit to control the voice unit to perform voice inquiry, and controls the timing module to start timing according to a predetermined time value;

The background control unit generates an alarm signal for controlling the alarm unit to respond to an alarm when the instruction sent by the voice unit is not received after the timing module ends counting.

Further, the alarm system further includes a transmission unit connected to the background main control unit; the transmission unit is connected to an external communication system;

The background control unit generates an alarm signal for controlling the alarm unit to respond to an alarm, and generates an alarm message transmitted to the external communication system through the transmission unit, and the external communication system sends the alarm information to Relevant personnel or ambulance agencies.

Further, the background control unit determines that a fall behavior occurs according to a change in the height, the tilt angle, and the effective area of the human body in the human body video image.

Further, the background control unit obtains the preset threshold by integrating the vibration signal collected by the sensing unit in the monitoring environment, and performing the mean square error on the acquired integral value.

The invention also provides an alarm method capable of monitoring an accidental fall of a human body, and the steps include:

Step A: collecting a human body video image and performing frame processing to determine whether a fall behavior occurs;

Step B: collecting a vibration signal of the monitoring environment to determine whether the vibration signal exceeds a preset threshold;

In step C, if it is determined that a fall behavior occurs and the vibration signal exceeds a preset threshold, an alarm is initiated.

Further, the step C further includes: performing a voice inquiry before starting the alarm;

Step C specifically includes: if it is determined that a fall behavior occurs and the vibration signal exceeds a preset threshold, entering an alarm state, and starting a voice inquiry;

After receiving a positive voice response, the alarm is activated;

After receiving a negative voice reply, the alarm state is released.

Further, the step C further includes: performing an alarm timing when the voice inquiry is started;

Step C specifically includes: if it is determined that a fall behavior occurs and the vibration signal exceeds a preset threshold, entering an alarm state, starting a voice inquiry and performing an alarm timing;

After receiving a positive voice reply within the alarm timing time, the alarm is activated;

After receiving a negative voice reply within the alarm timing time, the alarm state is released;

After the alarm timing is over, the alarm is activated.

Further, the step C further includes: starting an alarm and generating an alarm message to be transmitted to an external communication system, and the external communication system transmits the alarm information to a related person or an ambulance institution.

Beneficial effect

Compared with the prior art, the present invention has the beneficial effects that: the invention recognizes and analyzes the human body fall behavior through image recognition technology, and simultaneously detects the vibration wave change generated by the monitoring environment through the high-sensitivity vibration sensor, and the two The combination judgment makes the accuracy of the human body fall judgment, improves the stability of the system, and ensures that the device can work accurately in the dark, night, hot and other environments. Further, through the establishment of the monitoring-inquiry-response-alarm mechanism, it is possible to issue alarms and make rescue actions in a timely manner, especially for the care of elderly people living alone.

DRAWINGS

FIG. 1 is a schematic structural diagram of an alarm system capable of monitoring an accidental fall of a human body according to Embodiment 1 of the present invention.

FIG. 2 is a schematic structural diagram of an alarm system capable of monitoring an accidental fall of a human body according to Embodiment 2 of the present invention.

FIG. 3 is a schematic structural diagram of an alarm system capable of monitoring an accidental fall of a human body according to Embodiment 3 of the present invention.

4 is a flow chart of an alarm method capable of monitoring an accidental fall of a human body according to an embodiment of the present invention.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in FIG. 1 , an alarm system capable of monitoring an accidental fall of a human body according to the first embodiment of the present invention includes: a background main control unit 1 , an image capturing unit 3 connected to the background main control unit 1 , and sensing Unit 2 and alarm unit 4;

The camera unit 3, including a camera, for collecting human body video images and transmitting to the background main control unit 1;

The sensing unit, including the vibration sensor, is used for collecting the vibration signal of the monitoring environment and transmitting to the background main control unit 1;

The background control unit 1 is configured to perform frame processing on the human body video image to determine whether a fall behavior occurs; and to determine whether the vibration signal exceeds a preset threshold; and determine that a fall behavior occurs and the vibration When the signal exceeds the preset threshold, an alarm signal is generated to control the alarm unit 4 yuan to respond to the alarm.

In this embodiment, the human body image is collected by the camera, and the video is subjected to frame processing to analyze changes in the human body motion. The occurrence of falling behavior is determined according to the height, inclination angle and effective area change of the person. Vibration waves generated by the monitoring environment are detected by a highly sensitive vibration sensor. When the image recognizes that the degree of human fall behavior and environmental vibration exceeds a set threshold, when both conditions are satisfied, the alarm mode is activated, and in the present embodiment, the buzzer is used to issue an alarm.

In order to better monitor the monitoring environment and avoid unnecessary alarms, as shown in the second embodiment of FIG. 2, the present invention further includes a voice unit 5 connected to the background main control unit 1;

The background main control unit 1 enters an alarm state when determining that a fall behavior occurs and the vibration signal exceeds a preset threshold, and generates a voice control command to be sent to the voice unit 5 for controlling the voice unit 5 to perform voice inquiry;

After receiving the positive voice reply, the voice unit 5 generates an open alarm command and transmits it to the background control unit 1; the background control unit 1 generates an alarm signal according to the open alarm command to control the alarm unit 4 to respond to the alarm;

After receiving the negative voice reply, the voice unit 4 generates a cancel alarm command and transmits it to the background control unit 1; the background control unit 1 cancels the alarm state according to the cancel alarm command.

In the present embodiment, the voice unit 5 inquires whether the person in the monitoring environment needs help when performing the voice broadcast, and when receiving the "required help" reply, activates the alarm mode and receives a clear "unwanted" reply. The alarm status is cancelled.

The third embodiment shown in FIG. 3 includes a transmission unit connected to the background main control unit 1 in order to prevent the person in the monitoring environment from falling and not being able to notify the dependent person or the hospital in time. 6; the transmission unit 6 is connected to an external communication system;

The background control unit 1 includes a timing module;

The background control unit 1 sends a voice control command to the voice unit 5 for controlling the voice unit 5 to perform voice inquiry, and controls the timing module to start timing according to a predetermined time value; after the timing module ends, the timer module does not receive. When an instruction sent by the voice unit is sent, an alarm signal is generated to control the alarm unit to respond to the alarm, and an alarm message is generated to be transmitted to the external communication system through the transmission unit 6, and the external communication system will The alarm information is sent to the relevant personnel or the ambulance agency. In the specific use, the user or the guardian can set the time of the timing module, and can set different time according to different usage scenarios, such as one minute, five minutes, etc., and time timing is performed while the voice inquiry is being performed, and the time is counted. The voice inquiry is continuously played, and if no voice reply is received after the timer expires, the relevant response alarm is started and the relevant alarm information is sent.

The invention also provides an alarming method for monitoring an accidental fall of a human body as shown in FIG. 4, the steps comprising:

S1, collecting human body video images and performing frame processing to determine whether a fall behavior occurs. In this step, the human body motion change is analyzed according to the image after the framing, and the fall behavior is determined according to the height, the tilt angle and the effective area change of the human body.

S2: Acquire a vibration signal of the monitoring environment to determine whether the vibration signal exceeds a preset threshold. In this step, the determination of the preset threshold is implemented by a high-sensitivity vibration sensor. The vibration sensor is placed in the actual monitoring place a few days before the monitoring, and the acquired vibration signal is integrated, and the acquired integral is obtained. The value is obtained by finding the mean square error.

S3. Determine that a fall behavior occurs and the vibration signal exceeds a preset threshold. In order to ensure the accuracy of the monitoring, in this step, it is necessary to simultaneously determine whether the fall behavior and the vibration signal exceed a preset threshold.

S4, start a voice inquiry, and make an inquiry timing;

S5, determining whether the user has a voice reply during the inquiry time. In this step, if a voice reply is not received within the inquiry time, the process goes to step S6; if a voice reply is received, the process goes to step S8.

S6, generating an alarm message to the external communication system and starting to jump to step S7 for alarm.

S8, judging whether the user needs help according to the voice reply. If it is determined that the user selection needs help, the process goes to step S6; if it is determined that the user selection does not need help, the process goes to step S3 to continue monitoring.

The alarm system and method for monitoring accidental fall of human body provided by the invention are mainly used for monitoring and alarming of falling behavior of elderly persons, patients and dangerous workers, and also for behavior monitoring of infants and young children; information collection of behaviors of the elderly and patients To study changes in their physical status; to collect athletic information for high-level athletes to provide training guidance data. Application method: The data (image and vibration) is collected and processed for the environment, and the alarm system is triggered when the party is inquired and the set conditions are met.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims (10)

1. An alarm system capable of monitoring an accidental fall of a human body, comprising: a background main control unit, an image capturing unit, a sensing unit and an alarm unit respectively connected to the background main control unit;

   The camera unit includes a camera for acquiring a human body video image and transmitting the image to the background main control unit;

   The sensing unit includes a vibration sensor for collecting a vibration signal of a monitoring environment and transmitting the vibration signal to the background main control unit;

   The background control unit is configured to perform frame processing on the human body video image to determine whether a fall behavior occurs; and to determine whether the vibration signal exceeds a preset threshold; and determine that a fall behavior occurs When the vibration signal exceeds the preset threshold, an alarm signal is generated to control the alarm unit to respond to the alarm.
2. The alarm system according to claim 1, wherein said alarm system further comprises a voice unit connected to said background master unit;

   The background control unit enters an alarm state when determining that a fall behavior occurs and the vibration signal exceeds a preset threshold, and generates a voice control command to be sent to the voice unit to control the voice unit to perform voice inquiry;

   After receiving the positive voice reply, the voice unit generates an open alarm command to transmit to the background control unit; the background control unit generates an alarm signal according to the open alarm command to control the alarm unit to respond. Call the police;

   After receiving the negative voice reply, the voice unit generates a cancel alarm command to transmit to the background control unit; and the background control unit cancels the alarm state according to the cancel alarm command.
3. The alarm system according to claim 2, wherein said background control unit comprises a timing module;

   The background control unit sends a voice control command to the voice unit to control the voice unit to perform voice inquiry, and controls the timing module to start timing according to a predetermined time value;

   The background control unit generates an alarm signal to control the alarm unit to respond to an alarm when the instruction sent by the voice unit is not received after the timing module ends counting.
4. The alarm system according to claim 3, wherein said alarm system further comprises a transmission unit connected to said background main control unit; said transmission unit is connected to an external communication system;

   The background control unit generates an alarm signal for controlling the alarm unit to respond to an alarm, and generates an alarm message transmitted to the external communication system through the transmission unit, and the external communication system sends the alarm information to Relevant personnel or ambulance agencies.
5. The alarm system according to claim 1, wherein said background control unit determines that a fall behavior occurs based on a change in height, inclination angle, and effective area of a person in said human body video image.
6. The alarm system according to claim 1, wherein said background control unit obtains said vibration by integrating a vibration signal collected by said sensing unit in a monitoring environment, and performing an average square error on the obtained integrated value. Set the threshold.
7. An alarm method capable of monitoring an accidental fall of a human body, characterized in that the steps include:

   Step A: collecting a human body video image and performing frame processing to determine whether a fall behavior occurs;

   Step B: collecting a vibration signal of the monitoring environment to determine whether the vibration signal exceeds a preset threshold;

   In step C, if it is determined that a fall behavior occurs and the vibration signal exceeds a preset threshold, an alarm is initiated.
8. The alarm method according to claim 7, wherein said step C further comprises: performing a voice inquiry before starting the alarm;

   Step C specifically includes: if it is determined that a fall behavior occurs and the vibration signal exceeds a preset threshold, entering an alarm state, and starting a voice inquiry;

   After receiving a positive voice response, the alarm is activated;

   After receiving a negative voice reply, the alarm state is released.
9. The alarm method according to claim 8, wherein the step C further comprises: performing an alarm timing when the voice inquiry is started;

   Step C specifically includes: if it is determined that a fall behavior occurs and the vibration signal exceeds a preset threshold, entering an alarm state, starting a voice inquiry and performing an alarm timing;

   After receiving a positive voice reply within the alarm timing time, the alarm is activated;

   After receiving a negative voice reply within the alarm timing time, the alarm state is released;

   After the alarm timing is over, the alarm is activated.
10. The alarm method according to claim 9, wherein said step C further comprises: initiating an alarm and generating an alarm message for transmission to an external communication system, said external communication system transmitting said alarm information to a relevant person or ambulance mechanism.