Personnel positioning method, device and system

Abstract

The present invention relates to the field of positioning and tracking, and in particular to a method, device and system for positioning personnel. It mainly includes: the positioning device carried by the person to be positioned collects the surrounding environmental information, and sends the environmental information and device identifier to the marking device passing by; multiple marking devices are distributed in the interval where the person to be positioned may move, and the marking device obtains the movement trajectory of the positioning device according to the received environmental information and device identifier, and judges whether the positioning device leaves or enters a safe area according to the movement trajectory; when the positioning device enters the safe area, the positioning module on the positioning device is turned off, and the person to be positioned is positioned according to the movement trajectory obtained by the marking device. The present invention can improve the endurance of the positioning device and reduce the risk of the person to be positioned getting lost.

Description

Technical Field

[0001] The present invention relates to the field of positioning and tracking, and in particular to a method, device and system for positioning personnel. Background Art

[0002] Dementia mainly refers to people with progressive cognitive degeneration caused by brain injury or disease, and the extent of this degeneration is much higher than the progress of normal aging. The most common is people with Alzheimer's disease. In the context of social aging, the proportion of people with dementia is constantly increasing, causing society and families to bear certain care pressures. Caregivers often find it difficult to cope with the complex cognitive impairment symptoms and changeable mental and behavioral abnormalities of dementia and the series of problems caused by them. Preventing the loss of patients with dementia is one of the most important issues. For example, people with dementia may follow visitors out of the community or the gate of the nursing home, or people with dementia may go to more dangerous areas in public spaces on their own, leading to the loss of people with dementia. On the other hand, in real life, special groups such as the elderly, children, people with Down syndrome, people with mental illness, and people with autism are also at risk of getting lost.

[0003] There are already many products that can assist guardians in locating and searching for easily lost people after they get lost, such as anti-lost bracelets, satellite positioning motion trackers, and positioning tags based on 4G / 5G basebands. However, due to the high power consumption of satellite positioning modules and 4G / 5G basebands, anti-lost bracelets and satellite positioning motion trackers are difficult to maintain battery life for more than a week. Frequent charging may cause inconvenience to the use of anti-lost bracelets and satellite positioning motion trackers, or cause dementia patients to forget to wear them. On the other hand, there are also some positioning devices based on active radio frequency identification technology (Radio Frequency Identification, abbreviated as RFID). In the classic RFID-based positioning technology solution, active RFID tags consume too much power, have high requirements for battery capacity and charging frequency, and are not suitable for integration in wearable devices.

[0004] In view of this, how to overcome the defects of the existing technology and solve the problem of insufficient effectiveness of the current system for tracking lost persons is a problem to be solved in this technical field. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention solves the problem that the existing positioning equipment for people with dementia has high power consumption and causes inconvenience in use.

[0006] The embodiment of the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a method for locating personnel, specifically: a positioning device carried by a person to be located collects surrounding environmental information, and sends the environmental information and a device identifier to a passing marking device, wherein the environmental information includes electronic environmental information and / or natural environmental information; a plurality of marking devices are distributed in an interval where the person to be located may move, and the marking device obtains a movement trajectory of the positioning device based on the received environmental information and device identifier, and determines whether the positioning device has left or entered a safe area based on the movement trajectory; when the positioning device enters the safe area, the positioning module on the positioning device is turned off, and the person to be located is located based on the movement trajectory obtained by the marking device.

[0008] Preferably, the positioning device carried by the person to be located collects surrounding environmental information, and also includes: the positioning device scans surrounding marking devices and collects service identifiers of the marking devices; and / or the positioning device scans surrounding wireless networks and collects wireless network identifiers; and / or the positioning information collects surrounding natural environment information and collects characteristics of the natural environment information.

[0009] Preferably, collecting the service identifiers of the positioning devices specifically includes: the positioning device sorting the signal strengths of the scanned marking devices, obtaining the service identifiers of a specified number of marking devices with the strongest signal strengths, and using the obtained specified number of service identifiers as the service identifiers of the surrounding marking devices.

[0010] Preferably, the marking device obtains the movement trajectory of the positioning device based on the received environmental information and the device identifier, specifically including: the marking device compares the received environmental information with the information of its own environment, and determines whether the positioning device is located in its own range according to the comparison result; when the positioning mark is located in the range of the marking device itself, the device identifier of the positioning device is reported; based on the position of the marking device with the reported device identifier, and the reporting order, the movement trajectory of the positioning device is obtained.

[0011] Preferably, the marking device compares the received environmental information with its own environmental information, and determines whether the positioning device is located within its own range based on the comparison result, specifically including: the marking device compares the received service identifier with its own service identifier, and when the received service identifier contains its own service identifier, it indicates that the positioning device is within the range where the marking device is located; and / or, the marking device compares the received wireless network identifier with the wireless network identifier collected by itself, and when the received wireless network identifier is consistent with the wireless network identifier collected by itself, it indicates that the positioning device is within the range where the marking device is located; and / or, the marking device compares the received natural environment information with the natural environment information collected by itself, and when the received natural environment information is consistent with the natural environment information collected by itself, it indicates that the positioning device is within the range where the marking device is located.

[0012] Preferably, the leaving or entering of the safety area by the positioning device is determined based on the movement trajectory, specifically including: when the marking device located at the boundary of the safety area determines that the positioning device is located in its own range, the forward direction of the movement trajectory is obtained; when the movement trajectory extends from inside the safety area to outside the safety area, it indicates that the positioning device is about to leave the safety area; when the movement trajectory extends from outside the safety area to inside the safety area, it indicates that the positioning device is about to enter the safety area.

[0013] Preferably, when the positioning device enters a safe area, shutting down the positioning module on the positioning device further includes: when the positioning device enters an area where a bound marking device is located, shutting down the positioning module on the positioning device.

[0014] Preferably, when the positioning device enters the safety area, turning off the positioning module on the positioning device also includes: when the positioning module on the positioning device is turned off for a period of time exceeding a preset period of time, turning on the positioning module on the positioning device.

[0015] In the second aspect, the present invention provides a device for locating personnel, specifically: including: a processor, a storage module, a positioning module and a data interaction module, for realizing the function of the positioning device in the method described in the first aspect, specifically: the processor is respectively connected to other modules in the device, and the storage module is respectively connected to other modules in the device; wherein the processor is used to control other modules in the device according to the method described in the first aspect; the storage module is used to store positioning data and environmental information data; the positioning module is used to obtain the current position of the device outside the safe area; the data interaction module is used to complete the communication with the marking device according to the method described in the first aspect.

[0016] In a third aspect, the present invention provides a system for positioning personnel, specifically comprising: a positioning device and at least one marking device, specifically: the positioning device and the marking device use wireless communication to exchange data; wherein the positioning device is the device for positioning personnel described in the second aspect, and is used to complete the function of the positioning device in the method described in the first aspect; the marking device is used to complete the function of the marking device in the method described in the first aspect.

[0017] Compared with the prior art, the beneficial effect of the embodiment of the present invention is that: multiple marking devices are distributed in the area where the person to be located may move. When the positioning device enters the safe area, the positioning module on the positioning device is turned off, and only the low-power communication function is retained. The trajectory of the positioning device is calculated by the marking device to replace the high-power positioning module to complete the positioning of the person. Since the person to be located usually moves in the safe area most of the time, only the low-power communication function needs to be used. This method can improve the endurance of the positioning device and reduce the risk of the person to be located getting lost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A flow chart of a method for locating personnel provided by an embodiment of the present invention;

[0020] Figure 2 A flow chart of another method for locating personnel provided by an embodiment of the present invention;

[0021] Figure 3 A flow chart of another method for locating personnel provided by an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the structure of a device for locating personnel provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of a system architecture for personnel positioning provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] The present invention is an architecture of a specific functional system, so the specific embodiments mainly illustrate the functional logical relationship between the various structural modules, and do not limit the specific software and hardware implementation methods.

[0026] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0027] Embodiment 1:

[0028] In order to reduce the positioning power consumption of the positioning device used by the person to be located, to avoid the positioning device stopping working due to low power consumption, or to avoid frequent charging leading to forgetting to carry it, this embodiment provides a low-power positioning method, so that the positioning device can work stably for a long time, so as to reduce the risk of the person to be located getting lost.

[0029] like Figure 1 As shown, the specific steps of the method for locating personnel provided by the embodiment of the present invention are as follows:

[0030] Step 101: The positioning device carried by the person to be positioned collects surrounding environmental information and sends the environmental information and a device identifier to the passing marking device, wherein the environmental information includes electronic environmental information and / or natural environmental information.

[0031] In the method provided in this embodiment, in order to replace the high-power satellite positioning method in the prior art, a marking device is used to obtain the position and movement trajectory of the positioning device within a safe area. Since the marking device is close to the positioning device, various low-power communication methods can be used to exchange data between the positioning device and the marking device, for example, using a low-power Bluetooth device, etc., to minimize the power consumption of the positioning device itself. The positioning device only needs to simply obtain the environmental information around itself and send the environmental information to the marking device so that the marking device can compare and match.

[0032] In actual implementation, in order to ensure that the information sent by the positioning device can be received, the information is preferably sent by broadcasting, so that all marking devices within the signal range of the positioning device can receive the information and perform corresponding calculations and responses.

[0033] In a specific implementation, the environmental information collected by the positioning device may be electronic environmental information or natural environmental information. Since the collection of electronic environmental information consumes less power and has higher accuracy, the electronic environmental information is preferably used.

[0034] On the other hand, there may be multiple positioning devices in the same area. In order for the marking device to distinguish each positioning device, the positioning device also needs to send its own device identifier to the marking device so that the marking device can identify each positioning device through the device identifier.

[0035] Step 102: multiple marking devices are distributed in the area where the person to be located may move. The marking device obtains the movement trajectory of the positioning device based on the received environmental information and device identifier, and determines whether the positioning device leaves or enters the safe area based on the movement trajectory.

[0036] In the method provided in this embodiment, a marking device is used to locate the positioning device. The marking device does not need to be carried with you, so an active device or a high-power battery can be used without being limited by power consumption. In this embodiment, the marking device is responsible for the main data processing and positioning tasks to reduce the power consumption of the positioning device. Each marking device records the positioning devices that pass through its own range, and then integrates the positioning device information recorded by all marking devices, and obtains the movement trajectory of the positioning device based on the position of the marking device and the order in which the positioning devices pass.

[0037] The marking device can be a fixed device, such as a WiFi router, Bluetooth broadcast station, base station, etc. at a fixed location; or a device with positioning function and insensitive to power consumption, such as WiFi on transportation, mobile base stations, mobile communication devices of accompanying personnel or managers, etc. In specific implementation, appropriate marking devices can be selected according to actual needs to adapt to more usage scenarios.

[0038] In actual implementation, the marking device continuously broadcasts its service identifier, and the positioning device uses the received service identifier as the environmental information of the positioning device. When the marking device obtains the movement trajectory of a certain device and there is a possibility of leaving the safe area, it sends a one-to-one warning message to the corresponding positioning device according to the device identifier, and sends the warning message of the positioning device to the bound accompanying personnel.

[0039] In this embodiment, the area where the person to be located can move freely and safely is called a safe area. The key to preventing the person to be located from getting lost is to prevent the person to be located from leaving the safe area. In actual implementation, the safe area can be a fixed area, such as a closed residential area where the person to be located lives, a closed nursing home or hospital, etc.; it can also be a mobile area, such as the inside of a closed vehicle, within a certain range around the accompanying personnel, etc. It is also possible to set multiple layers of safe area boundaries according to the daily activities of the person to be located, for example, the building where the person to be located lives is the first layer of the safe area, the residential area where he lives is the second layer of the safe area, and the block where he lives is the third layer of the safe area. When laying out the marking equipment, the required number of marking devices can be set inside, at the boundary, and outside the safe area as needed.

[0040] When the positioning device enters the range of the marking device located at the boundary of the safe area, for example, when it enters the range of the marking device set up at the entrance and exit of a residential community or a nursing home, it indicates that the positioning device is at risk of leaving the safe area. The marking device located at the boundary of the safe area needs to determine the direction of travel of the person to be located based on the movement trajectory of the positioning device, issue an alarm when the person to be located may leave the safe area, and control the positioning device to perform higher-precision positioning.

[0041] Step 103: When the positioning device enters the safe area, the positioning module on the positioning device is turned off, and the person to be positioned is positioned according to the movement trajectory obtained by the marking device.

[0042] When the person to be located is outside the safe area, the risk of getting lost is high, and there may not be a marking device nearby. The positioning device needs to turn on or keep the positioning module turned on, and use GPS positioning and other more accurate methods for positioning to ensure that the location of the positioning device can be queried at any time to ensure the safety of the person to be located. When the person to be located is within the safe area, the risk of getting lost is low, and only the marking device needs to be used to confirm the approximate location of the person to be located, thereby reducing the power consumption of the positioning device, extending the battery life of the positioning device, and avoiding the positioning device running out of power and being unable to be used or requiring frequent charging.

[0043] In order to further reduce power consumption, within the safe area, the positioning device may not maintain continuous communication status, but instead open the data interaction module and the marking device to interact with data at specified time intervals. For example, data interaction is performed every 10 seconds to enable the marking device to obtain the current location of the positioning device. In the state of non-continuous communication, in order to prevent the person to be located from entering a location where there is no marking device when communication is interrupted, when the positioning device cannot collect information from the marking device when communication is turned on, or when no reply information is received from the marking device, the positioning module of the positioning device also needs to be turned on to obtain the current location of the positioning device in a timely manner.

[0044] After steps 101 to 103 provided in this embodiment, the marking device and the positioning device can be coordinated to locate the person to be located while the power consumption of the positioning device is as low as possible.

[0045] The positioning device carried by the person to be located needs to collect surrounding environmental information. The following simply provides some methods for obtaining environmental information. In actual implementation, other methods can be used to obtain it or obtain other environmental information as needed.

[0046] (1) The positioning device scans the surrounding tag devices and collects the service identifiers of the tag devices.

[0047] Each tag device has its own service identifier, which is continuously broadcast. Therefore, the positioning device can scan the service identifiers of all surrounding tag devices and use the service identifiers of the tag devices as one of the environmental information.

[0048] In actual implementation, there may be multiple marking devices in the same area, and the signal ranges of the marking devices may overlap. At this time, the positioning device may collect the service identifiers of multiple marking devices at the same time. When positioning, it is necessary to select the nearest marking device as the location reference of the positioning device. In wireless communication, the closer the device is, the stronger the signal is. Therefore, the positioning device sorts the signal strengths of the scanned marking devices, obtains the service identifiers of a specified number of marking devices with the strongest signal strength, and uses the obtained specified number of service identifiers as the service identifiers of the surrounding marking devices. In specific implementations, in order to minimize the positioning reference range, the specified number of marking devices can generally be 1-3.

[0049] (2) The positioning device scans the surrounding wireless networks and collects wireless network identifiers.

[0050] The data interaction module of the positioning device can scan the surrounding wireless networks, such as WiFi, Bluetooth, wireless base stations, etc. Each network will have a corresponding wireless network identifier. The marking devices within the same range can also collect the corresponding wireless network identifier, so the wireless network identifier can be used as one of the environmental information.

[0051] (3) Positioning information collects surrounding natural environment information and the characteristics of the natural environment information.

[0052] When the positioning device and the marking device are in the same range, the surrounding natural environment information such as noise and images will also be consistent, so the natural environment information can also be used as one of the environmental information.

[0053] Among the above environmental information, the service identifier and the wireless network identifier are both electronic environmental information. Compared with natural environmental information, electronic environmental information is easier to obtain and easier to compare. Therefore, when electronic environmental information can be obtained, it is preferred to use electronic environmental information as the environmental information for comparison. However, in some scenarios, the positioning device cannot obtain the service identifier and the wireless network identifier, and in this case, it is necessary to use the natural environmental information for comparison.

[0054] When the positioning device can collect the service identifier, it indicates that there are marking devices around. The positioning device directly sends the environmental information to the nearby marking devices, which then report it to reduce the power consumption of the positioning device. On the other hand, when the positioning device cannot collect the service identifier, it indicates that there may be no marking devices around, and the risk of the person to be located getting lost is high. At this time, the positioning device directly reports the environmental information through the data interaction module to promptly detect the loss of the person to be located.

[0055] In order to further reduce the power consumption of the positioning device in sending information, the service identifier list of the marking devices located at the border of the safe area can also be retained on the positioning device. When the positioning device receives a marking device whose service identifier is not at the border of the safe area, it indicates that the positioning device is located in the middle of the safe area and the possibility of getting lost is low. At this time, only the service identifier information can be sent to the marking device, and the marking device can only rely on the service identifier information for comparison. When the positioning device receives a marking device whose service identifier is at the border of the safe area, it indicates that the positioning device is at the border of the safe area and the possibility of getting lost is high. At this time, it is necessary to send a variety of environmental information to obtain more search instructions after the person to be located leaves the safe area.

[0056] like Figure 2 As shown, after receiving the environmental information sent by the positioning device, the marking device obtains the movement trajectory of the positioning device according to the received environmental information and the device identifier.

[0057] Step 201: The marking device compares the received environmental information with the information of its own environment, and determines whether the positioning device is within its own range based on the comparison result.

[0058] The marking device compares the environmental information of the positioning device with its own information. If the two are consistent, it indicates that the positioning device and the marking device are in the same range.

[0059] Step 202: When the positioning mark is located within the range of the marking device itself, the device identifier of the positioning device is reported.

[0060] When the marking device determines that the positioning device and itself are in the same range, it reports the device identifier of the positioning device and uses its own location information as the current location of the positioning device.

[0061] Step 203: Obtain the movement trajectory of the positioning device according to the position of the marking device that reports the device identifier and the reporting order.

[0062] By connecting each reported location point information in the order of reporting, the route and direction of the positioning device can be obtained, and the movement trajectory of the positioning device can be obtained.

[0063] After steps 201 to 203 provided in this embodiment, the movement trajectory of the positioning device can be obtained by comparing the environmental information of the positioning device and the marking device, so as to locate the person to be located.

[0064] In step 201, different comparison methods may be used for different environmental information. Some comparison methods for environmental information are briefly provided below. In actual implementation, other comparison methods may be used as needed, or other environmental information may be compared.

[0065] (1) The marking device compares the received service identifier with its own service identifier. If the received service identifier contains its own service identifier, it indicates that the positioning device is within the range of the marking device.

[0066] When the positioning device is within the signal range of a certain marking device, it can receive the service identifier of the corresponding marking device. Therefore, if the service identifier collected by the positioning device contains the service identifier of the marking device itself, the environmental information of the marking device is consistent with the environmental information sent by the marking device.

[0067] (2) The marking device compares the received wireless network identifier with the wireless network identifier collected by itself. When the received wireless network identifier is consistent with the wireless network identifier collected by itself, it indicates that the positioning device is located in the range where the marking device is located.

[0068] In the same range, different wireless devices can search for basically the same wireless network signals. Therefore, if the wireless network identifier collected by the positioning device is consistent with the wireless network identifier collected by the marking device, the environmental information of the two is consistent.

[0069] (3) The marking device compares the received natural environment information with the natural environment information collected by itself. When the received natural environment information is consistent with the natural environment information collected by itself, it indicates that the positioning device is located in the range where the marking device is located.

[0070] In the same range, the natural environment information collected by different devices is basically the same, for example, the noises are similar, the same characteristic objects exist in the environment image, etc. Therefore, if the natural environment information collected by the positioning device is consistent with the natural environment information collected by the marking device, the environmental information of the two is consistent.

[0071] It can be seen that by comparing different environmental information, it can be confirmed whether the positioning device and the marking device are located in the same range, and then the positioning device can be located by the position of the marking device.

[0072] In the method provided in this embodiment, the positioning module in the positioning device is turned off within the safe area, and the positioning module in the positioning device is turned on outside the safe area. Therefore, it is necessary to switch the positioning mode when the positioning device enters and leaves the safe area. Figure 3 As shown, the following method can be used to determine whether the positioning device leaves or enters the safe area based on the movement trajectory.

[0073] Step 301: When the marking device located at the boundary of the safety area determines that the positioning device is located in the area where it is located, the moving direction of the movement trajectory is obtained.

[0074] When the positioning device is always within the safe area or active in the safe area, the positioning mode does not need to be switched. When the positioning device enters the range of the marking device at the boundary of the safe area, it may enter or leave the safe area. At this time, it is necessary to determine whether the person to be located is currently entering or leaving the safe area based on the movement trajectory, and switch the positioning mode accordingly based on the judgment result.

[0075] Step 302: When the motion track extends from inside the safety area to outside the safety area, it indicates that the positioning device is about to leave the safety area.

[0076] If the movement trajectory first passes through the marking device inside the safety area and then passes through the marking device at the boundary of the safety area, it indicates that the positioning device may leave the safety area.

[0077] Step 303: When the motion track extends from outside the safety area to inside the safety area, it indicates that the positioning device is about to enter the safety area.

[0078] If the movement trajectory first passes through a marking device outside the safety area and then passes through a marking device at the boundary of the safety area, or does not pass through any marking device within a certain period of time before passing through a marking device at the boundary of the safety area, it indicates that the positioning device may have entered the safety area.

[0079] After steps 301 to 303 provided in this embodiment, it can be determined that the current positioning device is about to leave or enter a safe area.

[0080] In some actual scenarios, the room where the person to be located lives may be located at the edge of the safe area, for example, the room where the person to be located lives is close to the outer wall of a residential area or hospital. In order to avoid misjudgment in this scenario, the switching standard of the positioning method can also be adjusted according to the actual situation, and more judgment conditions can be added. For example, the marking device in the room where the person to be located lives is bound to the positioning device. When the positioning device enters the range of the bound marking device, it indicates that the person to be located is in the room where he lives and is in a safe state, and the positioning module on the positioning device is turned off.

[0081] In some actual scenarios, the positioning module on the positioning device may not be turned on in time when the person to be located leaves the safe area due to reasons such as failure of the marking device at the boundary of the safe area or poor signal. To avoid this problem, when the positioning module on the positioning device is turned off for longer than the preset time, the positioning module on the positioning device is turned on. In a certain scenario, the positioning module is in the off state and the last communication with the marking device has been more than ten minutes. At this time, the positioning module needs to be started every 5 minutes. If the positioning data obtained is outside the safe area, the satellite positioning module is kept on to prevent the person to be located from getting lost due to recognition failure at the boundary of the safe area.

[0082] In some actual scenarios, due to the obstruction of urban residential buildings, the signal of the positioning satellite has been greatly attenuated or difficult to detect in the outdoor environment between the buildings before entering the indoors, which will cause a substantial increase in the power consumption of the positioning module. In order to solve this technical problem. When the person to be located approaches the safe area, the position of the positioning device can also be identified by the marking device located at the boundary of the safe area to shut down the positioning module in advance. This method can prevent the overall power consumption of low-power positioning devices from being more accurately reduced when the satellite signal is poor. In order to ensure accurate positioning, this determination method must be combined with signal strength and multiple service identifiers for determination.

[0083] The personnel positioning method provided in this embodiment has the following technical advantages:

[0084] 1. Through the low-power data interaction module integrated in the positioning device, broadcast communication is carried out with the marking device to complete the interaction of environmental information, so as to achieve accurate positioning of indoor and safe area boundaries. Since no connection for high-speed communication is established and the main computing tasks are completed by the marking device, it has lower positioning battery power consumption.

[0085] 2. Trigger the action of starting and shutting down the positioning module at the boundary of the safe area, so that the positioning module of the positioning device remains dormant in the safe area to save power, so that the positioning device has a longer battery life and reduces the frequency of battery charging.

[0086] Embodiment 2:

[0087] Based on the personnel positioning method provided in Example 1, this embodiment further provides a personnel positioning device, which is used to implement the function of the positioning device in the method provided in Example 1.

[0088] like Figure 4 As shown, it includes a processor, a storage module, a positioning module and a data interaction module. The processor is connected to other modules in the device respectively, and the storage module is connected to other modules in the device respectively. Figure 4 In the diagram, the lines represent the data and control signal interactions between modules.

[0089] The processor is used to control other modules in the device according to the method provided in Example 1, for example, to control the opening and closing of the positioning module according to the signal fed back by the marking device, to interact with the marking device for data according to the set communication time, etc.

[0090] The storage module is used to store positioning data and environmental information data, and can also be used to store other data that needs to be used or calculate intermediate data.

[0091] The positioning module is used to obtain the current location of the device outside the safety zone. In the specific implementation, the appropriate positioning module can be selected as needed. For example: using the satellite positioning module, the real-time dynamic positioning of the person to be located is realized through the signal of the navigation satellite; using the electronic tag reading module, the positioning of the person to be located is realized based on the pre-set electronic tag device; the satellite positioning module and the electronic tag module are used at the same time, and the satellite positioning module is turned on or off by triggering the electronic tag set on the boundary of the safety zone.

[0092] The data interaction module is used to complete the communication with the marking device according to the method provided in Example 1. In a specific implementation, a low-power communication method such as a low-power Bluetooth module or a WiFi module can be used as a data interaction method according to the requirements of the marking device to reduce the power consumption requirements when positioning within the safe area.

[0093] In the preferred scheme of this embodiment, the data interaction module uses a low-power Bluetooth module. The positioning device starts a scan in no more than 4 seconds to obtain surrounding environmental information, and starts the data interaction module to interact with the marking device. Furthermore, when the identification device uses the Bluetooth name as the service identifier, the positioning device uses the low-power Bluetooth module to obtain the service identifier of the marking device. At this time, although the low-power Bluetooth module can reduce the Bluetooth module power consumption and CPU scanning load power consumption caused by Bluetooth scanning by increasing the scanning interval in the scanning state and reducing the scanning window, the CPU scanning load is still very high in the scan without Bluetooth name filtering. Therefore, the Bluetooth name (i.e., service identifier) ​​of the marking device can be recorded in the positioning device, and a Bluetooth name filter list can be generated to perform low-power Bluetooth scanning with Bluetooth name filtering to further reduce power consumption.

[0094] Furthermore, in order to improve the safety of the person to be located outside the safe area, the device provided in this embodiment also includes a communication module, and the communication module can use a 4G / 5G module or a WiFi module, so that the person to be located can call for help outside the safe area, or the accompanying personnel can call to remind and assist the person to be located. However, since the power consumption of communication modules such as 4G / 5G modules is relatively large, when the communication module is used in the device, the communication module and the positioning module need to be turned on and off at the same time to save the power consumption of the device.

[0095] It can be seen that the method provided in this embodiment can realize the function of the positioning device in the method of Example 1, and cooperate with the marking device to realize low-power personnel positioning.

[0096] Embodiment 3:

[0097] Based on the personnel positioning method provided in Example 2, this embodiment also provides a personnel positioning device for implementing the function of the positioning device in the method provided in Example 1.

[0098] like Figure 5 As shown, the system includes a positioning device and at least one marking device, and the positioning device and the marking device use wireless communication to exchange data. Figure 5 In the figure, there is a positioning device and multiple marking devices. The dotted line indicates the scope of the safe area. The marking devices are distributed within the safe area, on the boundary of the safe area, and outside the safe area.

[0099] The positioning device uses the device provided in Example 2 to complete the function of the positioning device in the method described in Example 1.

[0100] The marking device is used to complete the function of the marking device in the method described in Example 1. In a specific implementation, a wireless network device integrated with a low-power Bluetooth module or a WiFi module can be used as a marking device, for example: an industrial computer integrated with a low-power Bluetooth module, a mobile communication device integrated with a low-power Bluetooth module, a handheld computer or tablet computer integrated with a low-power Bluetooth module, a wireless router integrated with a WiFi module, etc.

[0101] In specific implementation, according to different installation locations and specific functions, the marking devices can be subdivided into indoor marking devices, marking devices in the safe area, marking devices at the boundary of the safe area, and marking devices outside the safe area. In actual implementation, indoor usually refers to the house or floor where the person to be located lives. Within this range, the person to be located can usually be considered to be in a safe state.

[0102] (1) Indoor tagging devices can be integrated into a home gateway and deployed in the house where the person to be located lives.

[0103] (2) The marking device in the safe area is deployed in the safe area to obtain the movement trajectory of the positioning device and locate the person to be located in the safe area.

[0104] (3) Security area boundary marking devices are deployed at the security area boundary, such as the entrance and exit of a cell, and send control signals to the positioning device to turn on and off the positioning module according to the situation of the positioning device entering and leaving the security area.

[0105] (4) Outside the safety area, marking equipment is deployed outside the safety area to assist in finding the person to be located who has left the safety area.

[0106] like Figure 5In the actual scenario shown, four marking devices are used. Among them, marking device 1 is an indoor marking device, marking device 2 is a marking device in the safe area, marking device 3 is a marking device at the boundary of the safe area, and marking device 4 is a marking device outside the safe area. The positioning methods of the person to be located in different areas are as follows.

[0107] (1) When the person to be located is active in a safe area, it can be basically ensured that he will not get lost. At this time, the positioning module and communication module on the positioning device remain in a closed state, and only data is exchanged with the marking device 1 and the marking device 2 through the low-power data interaction module. The marking device 1 and the marking device 2 locate the person to be located, thereby minimizing the power consumption of the positioning device.

[0108] (2) When the person to be located arrives near the entrance or exit of the safety area, there is a possibility that he or she will leave the safety area. At this time, the person to be located has entered the range of the marking device 3. The marking device 3 determines whether the person to be located has moved from the safety area to the outside of the safety area based on the movement trajectory of the person to be located obtained by the marking device 1, the marking device 2, and the marking device 4. If the person to be located passes through the marking device 1 or the marking device 2-marking device 3 in sequence, indicating that the person to be located is moving outside the safety area, the positioning module and the communication module on the positioning device are turned on to avoid the person to be located being unable to be located after leaving the safety area. An alarm message can also be sent to the accompanying personnel or the community security management personnel. If the person to be located passes through the marking device 4-marking device 3 in sequence, indicating that the person to be located is moving into the safety area, the positioning module and the communication module on the positioning device are turned off to reduce the power consumption of the positioning device after the person to be located enters the safety area.

[0109] (3) When the person to be located walks out of the safe area, the risk of getting lost is very high. At this time, the person to be located has entered the range of the marking device 4, and the positioning module is used for positioning, and the marking device 4 performs auxiliary positioning and alarm.

[0110] It can be seen that the system provided in this embodiment can establish a positioning network for the person to be located and a missing warning network through the use of the above-mentioned marking devices, and realize the positioning of the person while the positioning device consumes as little power as possible. In actual implementation, the number and position of the marking devices can be reasonably set according to the actual situation to achieve the best positioning and safety protection effect.

[0111] In the system provided in this embodiment, the data interaction between the positioning device and the marking device can be implemented by using low-power Bluetooth technology or WiFi wireless network technology. The hardware implementation examples of the two solutions are as follows.

[0112] (1) The marking device is a network device with a low-power Bluetooth module, the positioning device is integrated with a low-power Bluetooth module, the indoor marking device is specifically a gateway device with a Bluetooth module, and the safe area boundary marking device is specifically an industrial computer with a low-power Bluetooth module. Since the data length of the low-power Bluetooth broadcast message can reach up to 31 bytes, which is enough to accommodate the service identifier or device identifier, environmental information, etc., no Bluetooth connection is established between the marking device and the positioning device. The two parties exchange data through Bluetooth broadcast, that is, the service identifier, device identifier, and environmental information are all transmitted using Bluetooth broadcast packets. Low-power Bluetooth technology uses the 2.4G frequency band and has the characteristics of omnidirectionality and good wall penetration ability, but when the system is deployed, it needs to be installed separately in the home of the person to be located or replaced with a gateway device with a Bluetooth module.

[0113] (2) The marking device is a WiFi wireless router. The low-power positioning device is integrated with a WiFi data interaction module. The indoor positioning module is a WiFi data communication module. WiFi wireless network technology is widely used and does not need to be constructed in the living room of the person to be located. However, the power consumption is high, which will reduce the endurance of the low-power positioning device.

[0114] In actual implementation, the above examples can be used for implementation, or adjustments can be made according to actual conditions. However, considering that the power consumption of the indoor positioning module cannot be too high, it is preferred to use a solution using low-power Bluetooth technology.

[0115] The above description is only a 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 scope of the present invention.

Claims

1. A method for locating personnel, It is characterized in that Specifically include: The positioning device carried by the person to be positioned collects surrounding environmental information and sends environmental information and device identifiers to the passing marking devices, wherein the environmental information includes electronic environmental information and / or natural environmental information; wherein a list of service identifiers of marking devices located at the boundary of the safe area is retained on the positioning device, and when the service identifier collected by the positioning device is not a marking device at the boundary of the safe area, only the service identifier information is sent to the marking device; when the service identifier collected by the positioning device is a marking device at the boundary of the safe area, the service identifier information and environmental information are sent; A plurality of marking devices are distributed in the interval where the person to be located may move. The marking device obtains the movement trajectory of the positioning device according to the received environmental information and device identifier, and determines whether the positioning device leaves or enters the safe area according to the movement trajectory; wherein the positioning device and the marking device use a low-power communication method to exchange data; wherein, the determination of whether the positioning device leaves or enters the safe area according to the movement trajectory specifically includes: when the marking device located at the boundary of the safe area determines that the positioning device is located within its own range, obtaining the forward direction of the movement trajectory; when the movement trajectory extends from inside the safe area to outside the safe area, it indicates that the positioning device is about to leave the safe area; when the movement trajectory extends from outside the safe area to inside the safe area, it indicates that the positioning device is about to enter the safe area; When the positioning device enters a safe area, and / or when the positioning device enters the range of a bound marking device, the positioning module on the positioning device is turned off, and the person to be located is located according to the movement trajectory obtained by the marking device; wherein, when the positioning device is able to collect the service identifier of the marking device, the positioning device sends the environmental information to the marking device of the corresponding service identifier, and the marking device reports the movement trajectory.

2. The method for locating a person according to claim 1, It is characterized in that The positioning device carried by the person to be positioned collects surrounding environmental information, and also includes: The positioning device scans surrounding marking devices and collects service identifiers of the marking devices; and / or, the positioning device scans surrounding wireless networks and collects wireless network identifiers; And / or, the positioning information collects surrounding natural environment information and collects characteristics of the natural environment information.

3. The method for locating a person according to claim 2, It is characterized in that The service identifier of the collection marking device specifically includes: The positioning device sorts the signal strengths of the scanned marking devices, obtains the service identifiers of a specified number of marking devices with the strongest signal strengths, and uses the obtained specified number of service identifiers as the service identifiers of the surrounding marking devices.

4. The method for locating a person according to claim 1, It is characterized in that The marking device obtains the movement track of the positioning device according to the received environmental information and the device identifier, specifically including: The marking device compares the received environmental information with the information of its own environment, and determines whether the positioning device is within its range based on the comparison result; When the positioning mark is within the range of the marking device itself, the device identifier of the positioning device is reported; The movement trajectory of the positioning device is obtained according to the location of the marking device of the reported device identifier and the reporting order.

5. The method for locating a person according to claim 4, It is characterized in that The marking device compares the received environmental information with the information of its own environment, and determines whether the positioning device is within its own range according to the comparison result, specifically including: The marking device compares the received service identifier with its own service identifier. When the received service identifier contains its own service identifier, it indicates that the positioning device is located within the range where the marking device is located. And / or, the marking device compares the received wireless network identifier with the wireless network identifier collected by itself, and when the received wireless network identifier is consistent with the wireless network identifier collected by itself, it indicates that the positioning device is located in the range where the marking device is located; And / or, the marking device compares the received natural environment information with the natural environment information collected by itself. When the received natural environment information is consistent with the natural environment information collected by itself, it indicates that the positioning device is located in the range where the marking device is located.

6. The method for locating a person according to claim 1, It is characterized in that When the positioning device enters the safety area, shutting down the positioning module on the positioning device also includes: When the positioning module on the positioning device is turned off for longer than a preset time, the positioning module on the positioning device is turned on.

7. A device for locating personnel, It is characterized in that The device comprises a processor, a storage module, a positioning module and a data interaction module, and is used to implement the function of the positioning device in any one of claims 1 to 6, specifically: The processors are respectively connected to other modules in the device, and the storage modules are respectively connected to other modules in the device; Wherein, the processor is used to control other modules in the device according to the method according to any one of claims 1-6; The storage module is used to store positioning data and environmental information data; The positioning module is used to obtain the current position of the device outside the safe area; The data interaction module is used to complete the communication with the marking device according to the method described in any one of claims 1-6.

8. A system for locating personnel, It is characterized in that It includes a positioning device and at least one marking device, specifically: The positioning device and the marking device use wireless communication to exchange data; Wherein, the positioning device is the device for positioning personnel as described in claim 7, which is used to complete the function of the positioning device in any one of the methods of claims 1-6; The marking device is used to complete the function of the marking device in any one of claims 1-6.

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