CN114913669A

CN114913669A - Family member safety early warning method and system based on three-dimensional wireless positioning tracking and piezoelectric film sensor

Info

Publication number: CN114913669A
Application number: CN202111624039.7A
Authority: CN
Inventors: 李鹏程; 杭云; 郭宁; 施唯佳
Original assignee: Tianyi Digital Life Technology Co Ltd
Current assignee: Tianyi Digital Life Technology Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-08-16

Abstract

The invention relates to a home safety early warning system and a home safety early warning method. The system can include a processing unit, a wearable device, a camera, and M wireless receiving units in a decentralized arrangement, where M ≧ 3. The wearable device may be configured to transmit a wireless signal. The M wireless receiving units may be respectively configured to receive wireless signals from the wearable device and determine corresponding received signal strengths; and transmitting the received signal strength to a processing unit. The processing unit may be configured to determine three-dimensional location coordinates of the wearable device based on the three-dimensional location coordinates of the M wireless receiving units and the received signal strengths; determining a motion trajectory of the wearable device based on the three-dimensional location coordinates of the wearable device; and sending out alarm information when the abnormal motion track of the wearable equipment is detected. The system can perform safety early warning after comprehensive analysis based on the motion track data and/or the physical sign data and the image shot by the camera, and improves early warning accuracy.

Description

Family member safety early warning method and system based on three-dimensional wireless positioning tracking and piezoelectric film sensor

Technical Field

The invention relates to the technical field of home security, in particular to a home security early warning system and a home security early warning method.

Background

By the end of 2019, the proportion of the population of 60 years old and over in China has reached 18.1%. It is expected that the population of the elderly will exceed 3 hundred million in our country in the near future. In an aging society, the more and more the young people face the pressure of life, the busy work inevitably leads to a lack of necessary care for many preschool children. The elderly and children who need nursing in daily life are difficult to get rid of the predicament by self-efforts when sudden situations (such as wrestling, sudden diseases, etc.) occur in home activities without guardians, and guardians who are not in the field cannot get messages in time to help the monitored personnel get rid of the predicament. At this time, it is very important to provide safety early warning for the emergency situation of the monitored personnel.

The current home safety early warning method is mainly completed by installing a camera monitoring system at home. The camera monitoring system can complete various intelligent scenes such as face recognition, area recognition, voice recognition and the like, and can realize the functions of family monitoring and family member safety early warning. However, the camera has a monitoring dead angle, the basis for realizing the face recognition is that the camera shoots a clear face, and the basis for realizing the voice recognition is that voice audio with a certain volume and definition is obtained, so that false alarm and false alarm of the camera monitoring system are inevitably caused. The guardian cannot continuously stare at the camera to judge the state of the monitored person when the guardian is absent.

Therefore, there is a strong need for improved home security early warning systems and methods.

Disclosure of Invention

The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

In order to solve one or more of the above problems, the present invention aims to provide a home security early warning system and method.

According to one aspect of the disclosure, a home safety precaution system is provided. The system can include a processing unit, a wearable device, a camera, and M wireless receiving units in a decentralized arrangement, where M ≧ 3. In some cases, the wearable device is configured to transmit a wireless signal. The M wireless receiving units are respectively configured to receive wireless signals from the wearable device and determine corresponding received signal strengths; and transmitting the received signal strength to a processing unit. The processing unit may be configured to determine three-dimensional location coordinates of the wearable device based on the three-dimensional location coordinates of the M wireless receiving units and the received signal strengths; determining a motion trajectory of the wearable device based on the three-dimensional position coordinates of the wearable device; and sending out alarm information when the abnormal motion track of the wearable equipment is detected.

According to a further embodiment of the present disclosure, the wearable device may further comprise a vital signs sensing unit. The physical sign sensing unit may be configured to transmit the physical sign data to the processing unit. The processing unit may be further configured to receive the vital sign data from the vital sign sensing unit; and sending out alarm information when the abnormal physical sign data is detected.

According to a further embodiment of the disclosure, the processing unit may be further configured to adjust the camera based on three-dimensional position coordinates of the wearable device.

According to a further embodiment of the present disclosure, wherein M ≧ 4, and determining the three-dimensional location coordinate of the wearable device based on the three-dimensional location coordinates of the M wireless receiving units and the received signal strength further comprises: selecting the strongest N received signal strengths from the received M received signal strengths, wherein N ≧ 3; and determining the three-dimensional position coordinates of the wearable device based on the three-dimensional position coordinates of the selected N wireless receiving units with the strongest signal strengths and the N received signal strengths.

According to further embodiments of the present disclosure, issuing the warning information may include issuing the warning information to a designated warning reception apparatus or emergency dispatch center. The alert information includes one or more of the following: a location of the wearable device; images shot by the camera; abnormal motion trajectory data; and abnormal vital sign data.

According to a further embodiment of the present disclosure, the processing unit may be further configured to perform comprehensive analysis on the motion trajectory data, the physical sign data, and the image captured by the camera before sending the warning information, so as to avoid misjudgment.

According to one aspect of the disclosure, a home security early warning method executed at a processing unit is provided. The method can comprise the following steps: receiving received signal strength from M wireless receiving units which are dispersedly arranged, wherein M ≧ 3, the received signal strength being the strength of a wireless signal which is transmitted by the wearable device and received by the M wireless receiving units; determining three-dimensional position coordinates of the wearable device based on the three-dimensional position coordinates of the M wireless receiving units and the received signal strength; determining a motion trajectory of the wearable device based on the three-dimensional position coordinates of the wearable device; and sending out alarm information when the abnormal motion track of the wearable equipment is detected.

According to a further embodiment of the present disclosure, the method may further comprise receiving vital sign data from the wearable device; and sending out alarm information when the abnormal physical sign data is detected.

According to a further embodiment of the disclosure, the method may further include adjusting a camera based on the three-dimensional location coordinates of the wearable device, the camera configured to capture an image of a location where the wearable device is located.

According to one aspect of the present disclosure, a wearable device is provided. The wearable device may include a vital signs sensing unit and a wireless transmission unit. The wireless transmitting unit may be configured to transmit wireless signals to a plurality of wireless receiving units for three-dimensional localization of the wearable device.

According to the home safety early warning system disclosed by the invention, the motion track of the monitored personnel can be obtained through three-dimensional wireless positioning, meanwhile, the physical sign data of the monitored personnel are monitored in real time through the physical sign sensing unit, and safety early warning is carried out after comprehensive analysis is carried out on the basis of the motion track data and/or the physical sign data and the image shot by the camera, so that the accuracy of early warning is improved, and false alarm and missing report are prevented.

This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. Additional aspects, features and/or advantages of various embodiments will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Brief Description of Drawings

So that the manner in which the above recited features of the present disclosure can be understood in detail, a more particular description of the disclosure, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. In the drawings:

fig. 1 illustrates a schematic structural diagram of a home security early warning system according to embodiments of the present disclosure;

fig. 2 illustrates a three-dimensional wireless location diagram in accordance with various embodiments of the present disclosure;

fig. 3 illustrates a flow diagram for a home security early warning method according to embodiments of the present disclosure;

fig. 4 illustrates a block diagram of a processing unit, according to embodiments of the present disclosure;

fig. 5 illustrates a block diagram of a wearable device in accordance with embodiments of the present disclosure; and

fig. 6 illustrates a block diagram of an apparatus including a processing unit, in accordance with various embodiments of the present disclosure.

Detailed Description

For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the described exemplary embodiments. It will be apparent, however, to one skilled in the art, that the described embodiments may be practiced without some or all of these specific details. In other exemplary embodiments, well-known structures or processing steps have not been described in detail in order to avoid unnecessarily obscuring the concepts of the present disclosure.

In the present specification, unless otherwise specified, the term "a or B" used through the present specification means "a and B" and "a or B", and does not mean that a and B are exclusive.

The home safety early warning is an essential part for dealing with the gradually aging society. The current home safety early warning method is mainly completed by installing a camera monitoring system at home. The camera monitoring system can complete various intelligent scenes such as face recognition, area recognition, voice recognition and the like, and can realize the functions of family monitoring and family member safety early warning. However, the camera has a monitoring dead angle, the basis for realizing the face recognition is that the camera shoots a clear face, and the basis for realizing the voice recognition is that voice audio with certain volume and definition is obtained, so that the false alarm and the false alarm of the camera monitoring system are inevitably caused. The guardian cannot continuously stare at the camera to judge the state of the monitored person when the guardian is absent. It is noted that, although the elderly and children are used as the monitored personnel for illustration, those skilled in the art will appreciate that the home security early warning system and method according to the present disclosure may be applied to all monitored subjects who do not have the capability of dealing with emergency situations or self-rescue.

To address one or more of the above issues, the present disclosure provides a home security early warning system and method. According to the home safety early warning system disclosed by the invention, a three-dimensional wireless positioning module and a physical sign sensing unit are introduced besides the camera is used for monitoring monitored personnel. According to this disclosed house safety early warning system can acquire by the motion track of monitoring personnel through three-dimensional wireless location, simultaneously monitors by the physical sign sensing unit real time monitoring by the physical sign data of monitoring personnel to carry out safety precaution after carrying out the comprehensive analysis based on motion track data, and/or physical sign data and the image that the camera was shot and was taken, improve the degree of accuracy of early warning, prevent wrong report and report missing. Which will be described in detail below with reference to the accompanying drawings.

Fig. 1 illustrates an overall structural schematic diagram of a home security early warning system 100 according to embodiments of the present disclosure. As shown in fig. 1, the home security early warning system 10 may include a processing unit 100, one or more cameras 200, a wireless transmitting unit 300, and M wireless receiving units 400 distributed, where M ≧ 3. In one example, the M wireless receiving units 400 may be dispersedly disposed at various locations (e.g., various corners) in the environment in which the monitored person resides. In some cases, processing unit 100 may be integrated in any intelligent hub in the home (such as on an intelligent router, on an intelligent stereo, on some wireless receiving unit, on some intelligent camera).

In an alternative embodiment, the wireless transmitting unit 300 and the M wireless receiving units 400 may constitute a wireless positioning module for performing three-dimensional wireless positioning on the monitored person to obtain the movement track of the monitored person. In one example, the wireless transmitting unit 300 and the M wireless receiving units 400 may be configured to communicate according to a wireless communication protocol, such as WiFi, BlueTooth, Zigbee, Z-wave, or RF.

In one example scenario, the monitored person may carry the wireless transmitting unit 300 with him. For example, the wireless transmitting unit 300 may be integrated into wearable devices, such as wrist-supported products (e.g., watches, bracelets, wristbands, etc.), foot-supported products (e.g., shoes, socks, or other future leg-wearable products), head-supported products (e.g., glasses, helmets, headbands, etc.), body-supported products (e.g., vests, etc.).

In one example case, assuming that M is 4,

wireless receiving units

400a, 400b, 400c, and 400d may be fixedly installed at four locations in the environment where the monitored person resides, respectively, with three-dimensional position coordinates of (X1, Y1, Z1), (X2, Y2, Z2), (X3, Y3, Z3), and (X4, Y4, Z4), respectively. Referring to fig. 2, a three-dimensional wireless location schematic representation 20 is shown in accordance with various embodiments of the present disclosure.

The three-dimensional position coordinates of the wireless receiving unit 400 may be preset in the system. For example, the three-dimensional position coordinates of the wireless receiving unit 400 may be stored in the processing unit 100 with its identity as an index. It is noted that the location of one of the wtrus 400 may be updated in the system each time the location is adjusted. The wireless transmitting unit in the wearable device carried by the monitored person may be configured to transmit (e.g., broadcast) a wireless signal (e.g., a wireless positioning signal) to the wireless receiving unit 400. For example, the wireless transmitting unit 300 may be configured to periodically (e.g., every 1 ms-2 s) transmit wireless signals. Alternatively, the wireless transmitting unit 300 may be configured to transmit the wireless signal at a first period (e.g., 2s to 5s) in the normal mode, and when the home security early warning system 10 enters the armed mode, the wireless transmitting unit 300 may be configured to transmit the wireless signal at a second period (e.g., 1ms to 1s) in the armed mode. The

wireless receiving units

400a, 400b, 400c, and 400d receive wireless signals and determine received signal strengths RSSI1, RSSI2, RSSI3, RSSI 4. In some cases, the wtru 400 may select the strongest three signal strengths (e.g., RSSI1, RSSI2, RSSI3) from the four signal strengths and transmit the three signal strengths and the three-dimensional position coordinates of the corresponding wtrus to the processing unit 100. In an alternative case, the wireless receiving unit 400 may directly transmit its three-dimensional position coordinates and the received signal strength to the processing unit, and the processing unit 100 performs the selecting operation. The processing unit 100 may determine the position and the motion trajectory of the wireless transmitting unit 300 according to the selected received signal strength and the corresponding three-dimensional position coordinates to determine the position and the motion trajectory of the monitored person. In an alternative case, the wireless receiving unit 400 may determine the position of the wireless transmitting unit 300 according to the selected received signal strength and the corresponding three-dimensional position coordinates and transmit the determined position to the processing unit 100. Thus, the processing unit 100 may determine the position and the movement trajectory of the wireless transmitting unit 300 and the monitored person. As described above with reference to M ≧ 4 as an example, those skilled in the art will appreciate that the home security system 10 may include M ≧ 3 wireless receiving units without departing from the scope of the present disclosure.

In an optional example, the home security early warning system 10 (e.g., the processing unit 100) may be configured to pre-learn the position (e.g., especially the height) of the wireless transmitting unit 300 carried by the monitored person with respect to the monitored person, so as to better determine the motion track of the monitored person, improve the early warning accuracy, and reduce false alarm and false alarm.

In an alternative embodiment, the processing unit 100 may be configured to issue an alarm message when detecting an abnormality in the motion trajectory of the wireless transmitting unit 300. For example, the processing unit 100 may be configured to issue an alarm message to a designated warning receiving device (e.g., a guardian's user terminal) or an emergency dispatch center when an abnormality in the motion trajectory of the wireless transmitting unit 300 is detected. In some cases, the alert information may include, but is not limited to, one or more of the following: a location of the wearable device; images shot by the camera; and abnormal motion trajectory data.

In an alternative embodiment, the processing unit 100 may invoke the camera 200 according to the acquired position and three-dimensional motion trajectory of the monitored person. In some cases, the processing unit 100 may determine the camera 200 to be invoked (e.g., invoke a camera of a room in which the monitored person is located) according to the acquired location of the monitored person. In other cases, the processing unit 100 may adjust the camera 200 according to the acquired position and three-dimensional motion trajectory of the monitored person so that the camera 200 is aligned with the position where the monitored person is located. For example, the processing unit 100 may rotate the angle of the camera, zoom the view of the camera, and adjust the focal length according to the acquired position and three-dimensional motion trajectory of the monitored person, so that the camera 200 can clearly monitor the position where the monitored person is located. In some cases, the processing unit 100 adjusting the camera 200 may specifically include the following steps:

s1: acquiring three-dimensional position coordinates of a monitored person;

s2: sending a request message to the camera 200 according to the three-dimensional position coordinates of the monitored personnel, wherein the request message can request to acquire the current three-dimensional position coordinates of the camera, the current corner of the camera, the current central focus of the camera and the like;

s3: receiving a response message from the camera 200, wherein the response message may include a current three-dimensional position coordinate of the camera, a current corner of the camera, a current central focus of the camera, and the like;

s4: obtaining a distance sum space vector between the three-dimensional position coordinates of the monitored person and the current three-dimensional position coordinates of the camera, and obtaining an angle (including a front angle and a rear angle) to be rotated by the camera 200 according to the current corner of the camera and the space vector between the two; and

s5: and transmitting a control message to the camera 200, wherein the control message can comprise an angle to be rotated by the camera 200 and a distance (in meters) between the angle and the distance, so that the camera 200 adjusts a camera rotation angle according to the rotation angle information in the control message and adjusts a camera center focal point according to the distance between the angle and the distance, and the camera can accurately track and shoot, thereby ensuring the shooting angle and the quality of shot pictures. In some cases, the camera 200 may transmit the photographed image to the processing unit 100.

In an alternative embodiment, the processing unit 100 may be configured to issue a warning message when a dynamic anomaly is identified from the captured image. For example, the processing unit 100 may be configured to issue a warning message to a designated early warning receiving device (e.g., a user terminal of a guardian) or an emergency dispatch center when a movement abnormality (e.g., a wrestling) of a monitored person is recognized from a captured image. As an example, the processing unit 100 may be configured to pre-learn a movement anomaly of the monitored person through a large amount of image data. In some cases, the alert information may include, but is not limited to, one or more of the following: a location of the wearable device; the image shot by the camera.

In an alternative embodiment, the wearable device carried by the monitored person may further include a physical sign sensing unit 500, for example, a physical examination monitoring sensor (such as a piezoelectric film sensor). Piezoelectric thin film sensors are dynamic strain sensors that can be placed on the skin surface of the human body or implanted inside the human body to monitor vital signs, such as heart rate, respiration, and body movement. Furthermore, the vital signs sensing unit 500 may further comprise other sensors for sensing other vital signs, e.g. sensors for sensing blood pressure, body temperature, etc. The vital signs sensing unit 500 may determine the state (e.g., sleep state, movement state) in which the monitored person is located based on the sensed vital signs data. The vital signs sensing unit 500 can transmit the sensed vital signs data to the processing unit 100. Additionally, the condition sensing unit 500 may further communicate the status of the monitored person to the processing unit 100

In an alternative embodiment, the processing unit 100 may be configured to issue an alarm message upon detection of an abnormality in the physical characteristic data of the monitored person. For example, the processing unit 100 may be configured to issue an alert message to a designated alert receiving device (e.g., a guardian's user terminal) or an emergency dispatch center upon detecting an abnormality in at least one of heart rate, respiration, body movement, blood pressure, body temperature, etc. of the monitored person. Additionally, the processing unit may determine whether the vital sign data is abnormal in conjunction with the state the monitored person is in. For example, when the monitored person is in a sleep state, the heart rate is suddenly severe, and it can be concluded that the vital sign data is abnormal. In some cases, the alert information may include, but is not limited to, one or more of the following: a location of the wearable device; images shot by the camera; and abnormal vital sign data.

In an alternative embodiment, the processing unit 100 may be configured to, upon detecting any one of the following exceptions: and (4) entering an alert state by using the motion data, the movement of the detected person and the physical sign data. The processing unit 100 may then be configured to perform a comprehensive analysis of the motion trajectory data, the physical sign data, and the images captured by the camera after entering the armed state, in order to avoid false positives. In some cases, the alert information may include, but is not limited to, one or more of the following: a location of the wearable device; an image shot by a camera; abnormal motion trajectory data; and abnormal vital sign data.

As an example, the processing unit 100 may specifically send out the alarm information, which includes the following steps:

s1: and marking the three-dimensional position coordinates and the physical sign data (such as heart rate and the like) of the monitored person according to the time information, and generating a moving track curve and a physical sign data curve (such as a heart rate change curve and the like) according to the time axis. Generally, the moving trajectory curve in the normal state is smooth, and the volume characteristic data curve in the normal state fluctuates within a certain range. When the monitored personnel fall down, the position curve has wide-range instantaneous fluctuation (can be judged by curve tangent lines and the like). The detecting of the anomaly includes: (1) transient fluctuations greater than a threshold are detected from the moving trajectory curve, (2) fluctuations that are not within a set healthy range are detected from the vital sign data curve, (3) moving anomalies are identified from the captured images.

S2: when (1), (2) and (3) are met simultaneously, entering a level 1 alarm, wherein the level 1 alarm comprises the alarm level, the position of the wearable device, and alarm video and sign data within a threshold time before and after the fluctuation point is taken as the center (for example, within 15 seconds before and after the fluctuation point is taken as the center) are transmitted to a guardian mobile phone and/or an emergency dispatch center; if the abnormality is recovered to be normal within the first duration threshold, canceling the level 1 alarm;

when two of (1), (2) and (3) are satisfied, entering a level 2 alarm, including transmitting alarm video and sign data of the alarm level, the position of the wearable device, and the time of a threshold value before and after the fluctuation point (for example, within 15 seconds before and after the fluctuation point) to the guardian mobile phone; if the abnormality is recovered to be normal within the second duration threshold, canceling the level 2 alarm; or alternatively

When one of (1), (2) and (3) is satisfied, entering an alert mode (for example, shortening the sampling period), detecting the sign data or judging in combination with images shot by the camera before and after the fluctuation point, and triggering a level 2 alarm if the abnormality exceeds a third duration threshold; if the anomaly exceeds a fourth duration threshold, a level 1 alarm is triggered. Examples of level 2 alarms and level 1 alarms may be similar to the level 2 alarms and level 1 alarms described above.

In addition, when the early warning receiving equipment receives the warning information, the guardian can preliminarily judge whether the warning information is misjudged or not according to the warning information, and if the warning information is misjudged, the warning information is marked as misjudged; if further information is desired, the system details page can be entered to view the real-time status of the monitored personnel. The early warning receiving device may be a personal electronic device, such as a cellular phone, a Personal Digital Assistant (PDA), a tablet computer, a laptop computer, or a personal computer, etc., that the guardian carries with him. In other embodiments, the early warning receiving device may be a server of an emergency center.

Fig. 3 illustrates a flow diagram of a home security precaution method 30 for execution at a processing unit in accordance with embodiments of the present disclosure. Referring to fig. 3, a home safety precaution method 30 for execution at a processing unit may include the steps of:

at 305, received signal strengths from M wireless receiving units in a decentralized arrangement, where M ≧ 3, may be received. In some cases, when M ≧ 4, received signal strengths from N wireless receiving units in a decentralized arrangement may be received, where the received signal strength is N received signal strengths selected from among the M received signal strengths, where N ≧ 3.

At 310, three-dimensional location coordinates of the wearable device may be determined based on the three-dimensional location coordinates of the selected wireless receiving unit and the selected received signal strength.

At 315, a motion trajectory of the wearable device may be determined based on the three-dimensional location coordinates of the wearable device.

At 320, an alert message may be issued when an abnormality in the motion trajectory of the wearable device is detected.

Additionally, the home safety precaution method 40 for execution at the processing unit may include: receiving vital sign data from the wearable device; and sending out alarm information when the abnormal physical sign data is detected.

Fig. 4 illustrates a block diagram of a processing unit 100, according to various embodiments of the present disclosure. Referring to fig. 4, the processing unit 100 may include: a receiving module 105, a processing module 110, and a transmitting module 115.

In an embodiment of the disclosure, the receiving module 105 may be configured to receive received signal strengths from M wireless receiving units in a decentralized arrangement, where M ≧ 3. The processing module 110 may be configured to determine three-dimensional location coordinates of the wearable device based on the three-dimensional location coordinates of the selected wireless receiving unit and the selected received signal strength, and determine a motion trajectory of the wearable device based on the three-dimensional location coordinates of the wearable device. The transmission module 115 may be configured to issue alert information.

Fig. 5 illustrates a block diagram of a wearable device 600 in accordance with embodiments of the disclosure. Referring to fig. 5, the wearable device 600 may include: a wireless transmission module 400 and a vital signs sensing unit 500.

In embodiments of the present disclosure, the wireless transmission module 400 may be configured to transmit wireless signals to a plurality of wireless receiving units for three-dimensional localization of the wearable device 600. The vital signs sensing unit 500 may be configured to detect vital signs data.

Fig. 6 shows a block diagram of a device 700 including a processing unit according to aspects of the present disclosure. The apparatus illustrates a general hardware environment in which the present disclosure may be applied in accordance with exemplary embodiments of the present disclosure.

A device 700, which is an exemplary embodiment of a hardware device that may be applied to aspects of the present disclosure, will now be described with reference to fig. 6. Device 700 may be any machine configured to perform processing and/or computing, and may be, but is not limited to, a workstation, a server, a desktop computer, a laptop computer, a tablet computer, a Personal Digital Assistant (PDA), a smartphone, or any combination thereof. The above-described system may be implemented in whole or at least in part by device 700 or a similar device or system.

Device 700 may include components connected to bus 702 or in communication with bus 702, possibly via one or more interfaces. For example, the device 700 may include, among other things, a bus 702, one or more input devices 705, one or more output devices 710, one or more processors 715, and one or more memories 720.

The processor 715 can be any type of processor, and can include, but is not limited to, a general-purpose processor and/or a special-purpose processor (e.g., a special-purpose processing chip), an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 715 may be configured to operate the memory array using a memory controller. In other cases, a memory controller (not shown) may be integrated into the processor 715. The processor 715 may be configured to execute computer-readable instructions stored in the memory to perform various functions described herein.

Memory 720 may be any storage device that can enable storage of data. The memory 720 may include, but is not limited to, a magnetic disk drive, an optical storage device, solid state memory, floppy disk, hard disk, magnetic tape, or any other magnetic medium, an optical disk, or any other optical medium, ROM (read only memory), RAM (random access memory), cache memory, and/or any other memory chip or cartridge, and/or any other medium from which a computer can read data, instructions, and/or code. The memory 720 may store computer-executable software 725 comprising computer-readable instructions that, when executed, cause the processor to perform various functions described herein. Memory 720 may have various data/instructions/code for performing the various functions described herein.

Software 725 may be stored in memory 720 including, but not limited to, an operating system, one or more applications, drivers, and/or other data and code. Instructions to perform the various functions described herein may be included in one or more applications, and the elements of the device 700 described above may be implemented by instructions being read and executed by the processor 715. In some cases, the software 725 may not be directly executable by the processor, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein.

Input device 705 may be any type of device that can input information to a computing device.

Output device 710 may be any type of output device that can output information.

It will be apparent to those skilled in the art from the foregoing description that the present disclosure may be implemented in software having necessary hardware or in hardware, firmware, etc. Based on such understanding, embodiments of the present disclosure may be partially implemented in software. The computer software may be stored on a readable storage medium, such as a floppy disk, a hard disk, an optical disk, or a flash memory of the computer. The computer software includes a series of instructions to cause a computer (e.g., a personal computer, a service station, or a network terminal) to perform a method or a portion thereof according to various embodiments of the present disclosure.

The home security early warning apparatus and method according to the present disclosure are described above. The apparatus and method of the present disclosure have at least the following advantages:

(1) the home safety early warning system can send warning information to a monitor and/or an emergency dispatching center when the monitored personnel are abnormal. The alarm information is rich in content, including but not limited to the position and motion track of the monitored person, physical sign data, real-time monitoring pictures and the like. The guardian can judge according to the alarm information and carry out necessary rescue measures in time, thereby avoiding tragedy.

(2) The home safety early warning system provided by the disclosure utilizes the wireless transmitting units carried by monitored personnel and the wireless receiving units distributed dispersedly to carry out accurate three-dimensional wireless positioning, thereby obtaining the three-dimensional position seat and the motion track of the monitored personnel. The motion trail of the monitored person can be used as one of the criteria for judging whether the monitored person has an emergency or not.

(3) The three-dimensional position seat and the motion trail of the monitored person are used for adjusting the camera so that the camera can focus and rotate, and therefore the monitored person can be accurately tracked and shot. The image data shot by the camera can also be used as one of the criteria for judging whether the monitored personnel has the emergency condition.

(4) The piezoelectric film of the piezoelectric film sensor is ultrathin, light, soft and extremely durable, can withstand millions of times of bending and vibration, is high enough (can detect human body pulse through a jacket), and is very suitable for being applied to the surface of human skin or implanted into the human body to monitor vital sign signals. The piezoelectric film sensor is used as a sign sensing unit to be manufactured into wearable equipment, so that sign data of monitored personnel can be monitored conveniently and sensitively. The physical sign data can also be used as one of criteria for judging whether the monitored personnel has an emergency condition.

(5) The home safety early warning system can comprehensively judge the condition of the monitored personnel by utilizing various criteria, improves the alarm accuracy rate and avoids the false alarm omission.

In summary, the multi-angle and all-directional safety early warning system is constructed, and the system is perfect and has strong operability.

Reference throughout this specification to "an embodiment" means that a particular described feature, structure, or characteristic is included in at least one embodiment. Thus, usage of such phrases may not refer to only one embodiment. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

One skilled in the relevant art will recognize, however, that the embodiments can be practiced without one or more of the specific details, or with other methods, resources, materials, and so forth. In other instances, well-known structures, resources, or operations have not been shown or described in detail merely to observe obscuring aspects of the embodiments.

While embodiments and applications have been illustrated and described, it is to be understood that the embodiments are not limited to the precise configuration and resources described above. Various modifications, substitutions, and improvements apparent to those skilled in the art may be made in the arrangement, operation, and details of the methods and systems disclosed herein without departing from the scope of the claimed embodiments.

An implementation (1) of the present disclosure may be a home security early warning system. The system can include a processing unit, a wearable device, a camera, and M wireless receiving units in a decentralized arrangement, where M ≧ 3. In some cases, the wearable device is configured to transmit a wireless signal. The M wireless receiving units are respectively configured to receive wireless signals from the wearable device and determine corresponding received signal strengths; and transmitting the received signal strength to a processing unit. The processing unit may be configured to determine three-dimensional location coordinates of the wearable device based on the three-dimensional location coordinates of the M wireless receiving units and the received signal strengths; determining a motion trajectory of the wearable device based on the three-dimensional position coordinates of the wearable device; and sending out alarm information when the abnormal motion track of the wearable equipment is detected.

There may be some implementations (2) of the above system (1), wherein the wearable device may further comprise a physical trait sensing unit. The vital signs sensing unit may be configured to transmit the vital signs data to the processing unit. The processing unit may be further configured to receive the vital sign data from the vital sign sensing unit; and sending out alarm information when the abnormal physical sign data is detected.

There may be some implementations (3) of the system (1) above, wherein the processing unit may be further configured to adjust the camera based on three-dimensional location coordinates of the wearable device.

Some implementations (4) of the above system (1) may exist, wherein M ≧ 4, and determining the three-dimensional location coordinate of the wearable device based on the three-dimensional location coordinates of the M wireless receiving units and the received signal strength further includes: selecting the strongest N received signal strengths from the received M received signal strengths, wherein N ≧ 3; and determining the three-dimensional position coordinates of the wearable device based on the three-dimensional position coordinates of the selected N wireless receiving units with the strongest signal strengths and the N received signal strengths.

There may be some implementations (5) of the above system (1) in which issuing an alert may include issuing an alert to a designated alert receiving device or emergency dispatch center. The alert information includes one or more of the following: a location of the wearable device; images shot by the camera; abnormal motion trajectory data; and abnormal vital sign data.

There may be some implementations (6) of the above system (1), wherein the processing unit may be further configured to perform a comprehensive analysis of the motion trajectory data, the physical sign data, and the image taken by the camera before issuing the warning information to avoid a false determination.

One implementation (7) of the present disclosure may be a home security early warning method performed at a processing unit. The method can comprise the following steps: receiving received signal strength from M wireless receiving units which are dispersedly arranged, wherein M ≧ 3, and the received signal strength is the strength of a wireless signal which is transmitted by the wearable device and received by the M wireless receiving units; determining three-dimensional position coordinates of the wearable device based on the three-dimensional position coordinates of the M wireless receiving units and the received signal strength; determining a motion trajectory of the wearable device based on the three-dimensional location coordinates of the wearable device; and sending out alarm information when the abnormal motion track of the wearable device is detected.

There may be some implementations (8) of the above method (7), wherein the method may further include receiving vital sign data from the wearable device; and sending out alarm information when the abnormal physical sign data is detected.

There may be some implementations (9) of the method (7) above, wherein the method may further include adjusting a camera based on the three-dimensional location coordinates of the wearable device, the camera configured to capture an image of where the wearable device is located.

An implementation (10) of the present disclosure may be a wearable device. The wearable device may include a physical sensing unit and a wireless transmitting unit configured to transmit wireless signals to a plurality of wireless receiving units for three-dimensional localization of the wearable device.

Claims

1. A home safety early warning system comprises a processing unit, wearable equipment, a camera and M wireless receiving units which are distributed in a dispersed mode, wherein M is not less than 3;

the wearable device is configured to transmit a wireless signal;

the M wireless receiving units are respectively configured to:

receiving a wireless signal from the wearable device and determining a corresponding received signal strength; and

transmitting the received signal strength to the processing unit;

the processing unit is configured to:

determining three-dimensional location coordinates of the wearable device based on the three-dimensional location coordinates of the M wireless receiving units and the received signal strengths;

determining a motion trajectory of the wearable device based on three-dimensional location coordinates of the wearable device; and

and sending out alarm information when the abnormal motion track of the wearable equipment is detected.

2. The home security alert system of claim 1, wherein the wearable device further comprises a vital signs sensing unit configured to transmit vital signs data to the processing unit, and the processing unit is further configured to:

receive the vital sign data from the vital sign sensing unit; and

and sending out alarm information when the abnormal physical sign data is detected.

3. The home safety warning system of claim 1, wherein the processing unit is further configured to:

adjusting the camera based on the three-dimensional location coordinates of the wearable device.

4. The home safety warning system of claim 1, wherein M ≧ 4, and determining the three-dimensional location coordinate of the wearable device based on the three-dimensional location coordinates of the M wireless receiving units and the received signal strength further comprises:

selecting the strongest N received signal strengths from the received M received signal strengths, wherein N ≧ 3;

and determining the three-dimensional position coordinates of the wearable device based on the three-dimensional position coordinates of the selected N wireless receiving units with the strongest signal strengths and the N received signal strengths.

5. The home safety warning system of claim 1, wherein sending the warning message comprises: sending alarm information to a designated early warning receiving device or an emergency dispatch center, wherein the alarm information comprises one or more of the following information:

the location of the wearable device;

an image shot by the camera;

abnormal motion trajectory data; and

abnormal vital sign data.

6. The home security pre-warning system of claim 2, wherein the processing unit is further configured to:

before the warning information is sent out, the motion track data, the physical sign data and the image shot by the camera are comprehensively analyzed so as to avoid misjudgment.

7. A home safety early warning method executed in a processing unit comprises the following steps:

receiving reception signal strengths from M wireless reception units in a distributed arrangement, wherein M ≧ 3, the reception signal strengths being strengths of wireless signals received by the M wireless reception units and transmitted by a wearable device;

determining three-dimensional location coordinates of a wearable device based on the three-dimensional location coordinates of the M wireless receiving units and the received signal strengths;

8. The home safety precaution method according to claim 7, further comprising:

receiving vital sign data from the wearable device; and

9. The home security alert method of claim 7, further comprising adjusting a camera based on three-dimensional location coordinates of the wearable device, the camera configured to capture an image of a location where the wearable device is located.

10. A wearable device comprising a vital signs sensing unit and a wireless transmitting unit configured to transmit wireless signals to a plurality of wireless receiving units for three-dimensional localization of the wearable device.