A method for finding missing persons based on electronic paper interactive devices and related equipment

Abstract

This application belongs to the field of communication technology and discloses a method for finding missing persons based on electronic paper interactive devices and related equipment. The method includes: when receiving first coded information input by a first operator into a first electronic paper interactive device and uploaded by the first electronic paper interactive device, sending the first coded information to all second electronic paper interactive devices for display; when receiving second coded information input by a second operator into any second electronic paper interactive device and uploaded by the second electronic paper interactive device, performing a matching detection between the second coded information and the first coded information; if the second coded information and the first coded information match, then informing the second operator of the location information of the first electronic paper interactive device through the second electronic paper interactive device that uploaded the second coded information; thereby facilitating the location of lost or confused children.

Description

Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a method for finding missing persons based on an electronic paper interactive device and related equipment. Background Technology

[0002] Children getting lost or wandering off is a frequent occurrence. Wearable smart devices with location tracking capabilities can provide real-time location information for lost or wandering children, making it easier to find them. However, not all children have the opportunity to be equipped with such devices, and finding children who are not wearing them typically requires significant manpower and time. Therefore, there is a need to find a public method and related equipment for easily locating lost or wandering children. Summary of the Invention

[0003] The purpose of this application is to provide a method for finding missing or lost children based on electronic paper interactive devices and related equipment.

[0004] In a first aspect, this application provides a method for finding people based on electronic paper interactive devices, applied to a server, wherein the server is communicatively connected to multiple electronic paper interactive devices distributed in a target area, and includes the following steps: A1. Upon receiving first coded information input by the first operator to the first electronic paper interactive device and uploaded by the first electronic paper interactive device, the first coded information is sent to all second electronic paper interactive devices for display; the second electronic paper interactive devices are all electronic paper interactive devices within the target area other than the first electronic paper interactive device; A2. Upon receiving second cipher information input by a second operator to any of the second electronic paper interactive devices and uploaded by the second electronic paper interactive devices, a matching detection is performed on the second cipher information and the first cipher information; A3. If the second cipher information matches the first cipher information, then the location information of the first electronic paper interactive device is communicated to the second operator by the second electronic paper interactive device that uploaded the second cipher information.

[0005] Children who get lost or astray within the target area can input a first code message pre-agreed with their guardian through any electronic paper interactive device (i.e., the first electronic paper interactive device). The guardian can then input a second code message pre-agreed with the lost or astray child through any other electronic paper interactive device within the target area (i.e., the second electronic paper interactive device). Once a match is found, the child's current location (i.e., the location of the first electronic paper interactive device) can be obtained, making it easier for the guardian to quickly find the lost or astray child.

[0006] Preferably, step A1 includes: Upon receiving initial first code information input by the first operator into the first electronic paper interactive device and uploaded by the first electronic paper interactive device, the validity of the initial first code information is verified. If the initial first code information is valid, then the initial first code information is confirmed as the final first code information; The final first cipher information is sent to all second electronic paper interactive devices for display.

[0007] This prevents operators from maliciously consuming system resources.

[0008] Preferably, after step A1, the method further includes the following step: A4. Send a first instruction to the first electronic paper interactive device to cause the first electronic paper interactive device to play video information for the first operator to watch.

[0009] By playing video information to attract the first user (i.e., the lost or confused child) to stay at the first electronic paper interactive device, the probability of the first user changing location while the second user (i.e., the guardian) is looking for the first user is reduced, thus making it easier for the second user to find the first user quickly.

[0010] Preferably, step A4 includes: The identity information of the first operator is obtained based on the first coded information; the identity information includes age and gender. The video information is filtered based on the identity information; A first instruction is generated based on the selected video information and sent to the first electronic paper interactive device, causing the first electronic paper interactive device to play the selected video information.

[0011] Preferably, step A2 includes: When a second cipher information is received from the second operator inputting into any of the second electronic paper interactive devices and uploaded by the second electronic paper interactive devices, the cipher information that matches the first cipher information is extracted from the local database and recorded as the third cipher information. Compare the second cipher information and the third cipher information. If the second cipher information and the third cipher information match, then the second cipher information and the first cipher information are determined to match. Otherwise, the second cipher information and the first cipher information are determined to not match.

[0012] Preferably, step A3 includes: Obtain the location information of the first electronic paper interactive device and record it as the first location information; A second instruction containing the first location information is generated and sent to the second electronic paper interactive device that uploaded the second cipher information, so that the second electronic paper interactive device that uploaded the second cipher information displays the first location information.

[0013] Preferably, step A3 further includes: Obtain the location information of the second electronic paper interactive device that uploaded the second cipher information, and record it as the second location information; Based on the first location information and the second location information, a navigation route information is generated from the second electronic paper interactive device that uploaded the second cipher information to the first electronic paper interactive device; Generate a QR code for extracting the navigation route information; A third instruction containing the QR code is generated and sent to the second electronic paper interactive device that uploaded the second cipher information, causing the second electronic paper interactive device that uploaded the second cipher information to display the QR code.

[0014] Secondly, this application provides a missing person search system based on electronic paper interactive devices, including a server and multiple electronic paper interactive devices distributed in a target area, wherein the electronic paper interactive devices are communicatively connected to the server; The electronic paper interactive device is used to upload the first cipher information to the server when the first operator inputs the first cipher information, and to upload the second cipher information to the server when the second operator inputs the second cipher information. The server is configured to, upon receiving the first cipher information uploaded by the first electronic paper interactive device, send the first cipher information to all second electronic paper interactive devices for display; the first electronic paper interactive device is the electronic paper interactive device that uploaded the first cipher information; the second electronic paper interactive devices are all electronic paper interactive devices within the target area except for the first electronic paper interactive device; upon receiving second cipher information uploaded by the second electronic paper interactive device after input by the second operator, the server performs a matching detection on the second cipher information and the first cipher information; if the second cipher information and the first cipher information match, the server informs the second operator of the location information of the first electronic paper interactive device through the second electronic paper interactive device that uploaded the second cipher information.

[0015] Children who get lost or astray within the target area can input a first code message pre-agreed with their guardian through any electronic paper interactive device (i.e., the first electronic paper interactive device). The guardian can then input a second code message pre-agreed with the lost or astray child through any other electronic paper interactive device within the target area (i.e., the second electronic paper interactive device). Once a match is found, the child's current location (i.e., the location of the first electronic paper interactive device) can be obtained, making it easier for the guardian to quickly find the lost or astray child.

[0016] Thirdly, this application provides an electronic device, including a processor and a memory, wherein the memory stores a computer program executable by the processor, and when the processor executes the computer program, it performs the steps of the missing person search method based on the electronic paper interactive device described above.

[0017] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the steps of the missing person search method based on an electronic paper interactive device as described above.

[0018] Beneficial effects: The missing person search method and related equipment based on electronic paper interactive devices provided in this application allow lost or confused children in the target area to input a first code message pre-agreed with their guardians through any electronic paper interactive device. The guardians can then input a second code message pre-agreed with the lost or confused child through any other electronic paper interactive device in the target area. After a successful match, the child's current location can be obtained, making it easier for guardians to quickly find the lost or confused child. Attached Figure Description

[0019] Figure 1 A flowchart of a method for finding people based on an electronic paper interactive device provided in an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the structure of a person-finding system based on an electronic paper interactive device provided in an embodiment of this application.

[0021] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0022] Labeling explanations: 100, server; 200, electronic paper interactive device; 301, processor; 302, memory; 303, communication bus. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Please refer to Figure 1 , Figure 1 This application discloses a method for finding people based on electronic paper interactive devices, which is applied to a server. The server is communicatively connected to multiple electronic paper interactive devices distributed in a target area, and includes the following steps: A1. Upon receiving the first coded message input by the first operator to the first electronic paper interactive device and uploaded by the first electronic paper interactive device (i.e., the electronic paper interactive device that uploaded the first coded message is the first electronic paper interactive device), the first coded message is sent to all second electronic paper interactive devices for display; the second electronic paper interactive devices are all electronic paper interactive devices in the target area except for the first electronic paper interactive device. A2. Upon receiving second cipher information input by the second operator to any second electronic paper interactive device and uploaded by the second electronic paper interactive device, perform a matching detection between the second cipher information and the first cipher information; A3. If the second cipher information matches the first cipher information, then the location information of the first electronic paper interactive device is communicated to the second operator through the second electronic paper interactive device that uploads the second cipher information.

[0026] Children who get lost or become astray within the target area can input a pre-agreed first code message with their guardian through any electronic paper interactive device (i.e., the first electronic paper interactive device). The guardian can then input a pre-agreed second code message with the lost or astray child through any other electronic paper interactive device within the target area (i.e., the second electronic paper interactive device). Upon successful matching, the child's current location (i.e., the location of the first electronic paper interactive device) can be obtained, facilitating the guardian's rapid retrieval of the lost or astray child. Furthermore, the first code message is sent to all second electronic paper interactive devices for display, enabling police, area administrators, and guardians to promptly identify lost or astray children and take timely action.

[0027] Among them, the method for finding missing persons based on electronic paper interactive devices can be applied to Figure 2 The server 100 in the missing persons search system based on electronic paper interactive devices is shown.

[0028] The electronic paper interactive device has an electronic paper display screen and is also equipped with an input device for inputting coded information, such as at least one of a touch screen, a voice interaction module, a keyboard, and a camera.

[0029] The target area can be a shopping mall, scenic spot, residential area, street or other administrative area. The electronic paper interactive device can be placed on public facilities in the target area (such as trash cans, bus stop signs, billboards, notice boards, etc.) to attract attention.

[0030] In this system, the first and second cipher messages are signals pre-agreed upon by the child and their guardian. The first cipher message is used by the child, and the second cipher message is used by the guardian. These paired cipher messages are pre-registered on the server and recorded in its local database. Therefore, generally, the first operator is the child, and the second operator is the child's guardian. Hereinafter, the first cipher message recorded in the local database and used by the child will be referred to as the child's cipher message, and the second cipher message recorded in the local database and used by the guardian will be referred to as the guardian's cipher message.

[0031] The first and second cipher information may include at least one of the following: text information, numerical information, symbolic information, voice information, graphic information (such as hand-drawn graphic information).

[0032] Sometimes, people may maliciously operate electronic paper interactive devices for pranks or other reasons. If all input cipher information is broadcast (i.e., sent to all second electronic paper interactive devices for display), it will consume system resources and create a large amount of interference information, affecting the dissemination of truly useful information (for example, a large number of false first cipher information are displayed on each second electronic paper interactive device, affecting the prominence of the first cipher information for lost or confused children, making it difficult for guardians to discover the first cipher information in a timely manner). Therefore, in some implementations, step A1 includes: A101. Upon receiving initial first code information input by the first operator into the first electronic paper interactive device and uploaded by the first electronic paper interactive device, verify the validity of the initial first code information; A102. If the initial first code information is valid, then the initial first code information shall be confirmed as the final first code information; A103. Send the final first cipher information to all second electronic paper interactive devices for display.

[0033] Therefore, only the first cipher information that has been verified will be displayed on all second electronic paper interactive devices, preventing operators from maliciously occupying system resources and interfering with the dissemination of valid first cipher information.

[0034] The verification of the validity of the initial first code information specifically includes: searching the local database for children's code information that matches the initial first code information. If the search is successful, the initial first code information is deemed valid; otherwise, it is deemed invalid. If the initial first code information contains at least one of text, numbers, or symbols, the matching children's code information should contain at least one of the same text, numbers, or symbols. If the initial first code information contains speech, a speech matching algorithm (which can be an existing one) is used to search for matching children's code information. If the initial first code information contains graphic information, an image matching algorithm (which can be an existing one) is used to search for matching children's code information. Only when all information in the initial first code information and the target children's code information is identical or matches is the target children's code information determined to be a matching children's code information.

[0035] In step A103, if the first code information contains voice information, the voice information can be converted into text information for display, or the voice information can be directly broadcast.

[0036] Because lost or wandering children are usually young and have less patience, they are prone to leaving after the first code information is entered into the first electronic paper interactive device and going to other places. They are also easily attracted by cartoons, nursery rhyme videos, or other video information. Therefore, in some preferred embodiments, after step A1, the following step is also included: A4. Send a first instruction to the first electronic paper interactive device to cause the first electronic paper interactive device to play video information for the first operator to watch.

[0037] By playing video information to attract the first user (i.e., the lost or confused child) to stay at the first electronic paper interactive device, the probability of the first user changing location while the second user (i.e., the guardian) is looking for the first user is reduced, thus making it easier for the second user to find the first user quickly.

[0038] The video information played can be either video information stored in the first electronic paper interactive device or video information sent to the first electronic paper interactive device in real time by the server.

[0039] For example, in some implementations, step A4 includes: A401. Obtain the identity information of the first operator based on the first cipher information; the identity information includes age and gender; A402. Filter video information based on identity information; A403. Generate a first instruction based on the selected video information and send it to the first electronic paper interactive device to make the first electronic paper interactive device play the selected video information.

[0040] The child's coded information and guardian's coded information recorded in the server's local database are respectively bound to the corresponding child's identity information and guardian's identity information; the identity information includes age and gender, and may also include at least one of the following: name, phone number, ID card number, etc. In step A401, the corresponding child's identity information can be retrieved from the local database by matching the child's coded information with the first coded information, thus obtaining the identity information of the first operator.

[0041] Children of different ages and genders have different preferences for video information. Targeted selection of video information based on the first operator's identity information makes it easier to attract the first operator to stay and watch. Specifically, the stored video information can be divided into multiple groups (with some overlap) in advance based on data statistics and the viewing preferences of children of different ages and genders. In step A402, the corresponding video information group is selected as the target video information group based on the first operator's identity information.

[0042] The video information can be stored locally on the first electronic paper interactive device or on the server.

[0043] If the video information can be stored locally on the first electronic paper interactive device, in step A402, after selecting the corresponding video information group as the target video information group based on the identity information of the first operator, all video information in the target video information group can be selected as the selected video information, or a preset number of video information (set according to actual needs) can be randomly selected as the selected video information. At this time, in step A403, the identification information (such as number, name, etc.) of the selected video information is included in the first instruction and sent to the first electronic paper interactive device, so that the first electronic paper interactive device plays the corresponding video information according to the identification information of the selected video information.

[0044] If the video information can be stored on a server and needs to be sent to the first electronic paper interactive device in real time, to avoid excessive data transmission, in step A402, after selecting the corresponding video information group as the target video information group based on the first operator's identity information, a preset number of video information can be randomly selected from the target video information group as the selected video information. At this time, in step A403, the selected video information is included in the first instruction and sent to the first electronic paper interactive device, causing the first electronic paper interactive device to play the received video information.

[0045] Specifically, step A2 includes: A201. Upon receiving second cipher information input by a second operator into any second electronic paper interactive device and uploaded by the second electronic paper interactive device, extract the cipher information that matches the first cipher information from the local database (i.e., the guardian cipher information that matches the child cipher information that matches the first cipher information), and record it as the third cipher information. A202. Compare the second and third cipher messages. If the second and third cipher messages match, then the second and first cipher messages match. Otherwise, the second and first cipher messages do not match.

[0046] Specifically, if the second coded message contains at least one of text, numbers, or symbols, then the matching third coded message should contain at least one of the same text, numbers, or symbols. If the second coded message contains speech, a speech matching algorithm (which can be an existing one) is used to determine whether the speech information in the second and third coded messages matches. If the second coded message contains graphic information, an image matching algorithm (which can be an existing one) is used to determine whether the graphic information in the second and third coded messages matches. A match is determined only when all information in the second and third coded messages is identical or matches.

[0047] In some implementations, step A3 includes: A301. Obtain the location information of the first electronic paper interactive device, and record it as the first location information; A302. Generate a second instruction containing the first location information and send it to the second electronic paper interactive device that uploaded the second cipher information, so that the second electronic paper interactive device that uploaded the second cipher information displays the first location information.

[0048] The first location information can be uploaded by the first electronic paper interactive device, for example, when uploading the first cipher information; or the corresponding first location information can be obtained by querying the identification information uploaded by the first electronic paper interactive device (such as the serial number, MAC code, IP address, etc. of the first electronic paper interactive device).

[0049] When the second electronic paper interactive device displays the first location information, it may display only the corresponding text information or display map information containing the first location information.

[0050] To prevent unauthorized personnel from obtaining the first location information and threatening the personal safety of the first operator, the second electronic paper interactive device displays the first location information for a preset duration (which can be set according to actual needs). Alternatively, the second electronic paper interactive device detects whether the second operator has left through a sensor or camera and stops displaying the first location information after the second operator leaves.

[0051] In some implementations, step A3 further includes: A303. Obtain the location information of the second electronic paper interactive device that uploaded the second cipher information, and record it as the second location information; A304. Generate navigation route information from the second electronic paper interactive device that uploaded the second cipher information to the first electronic paper interactive device based on the first location information and the second location information; A305. Generate a QR code for extracting navigation route information; A306. Generate a third instruction containing a QR code and send it to the second electronic paper interactive device that uploaded the second cipher information, so that the second electronic paper interactive device that uploaded the second cipher information displays the QR code.

[0052] The second location information can be uploaded by the second electronic paper interactive device, for example, when uploading the second cipher information; or the corresponding second location information can be obtained by querying the identification information uploaded by the second electronic paper interactive device (such as the number, MAC code, IP address, etc. of the second electronic paper interactive device).

[0053] When generating navigation route information, third-party navigation software programs can be called to generate navigation routes.

[0054] After the second electronic paper interactive device displays the QR code, the second operator can use a mobile terminal to identify the QR code to extract the navigation route information, thereby finding the first operator more quickly based on the navigation route information.

[0055] To prevent unauthorized personnel from obtaining the navigation route information and posing a threat to the personal safety of the first operator, the second electronic paper interactive device displays the QR code for a preset duration (which can be set according to actual needs). Alternatively, the second electronic paper interactive device detects whether the second operator has left through a sensor or camera and stops displaying the QR code after the second operator leaves.

[0056] As can be seen from the above, this method for finding missing persons based on electronic paper interactive devices, upon receiving first coded information input by the first operator into the first electronic paper interactive device and uploaded by the first electronic paper interactive device, sends the first coded information to all second electronic paper interactive devices for display; upon receiving second coded information input by the second operator into any second electronic paper interactive device and uploaded by the second electronic paper interactive device, performs a matching test on the second coded information and the first coded information; if the second coded information and the first coded information match, the location information of the first electronic paper interactive device is informed to the second operator through the second electronic paper interactive device that uploaded the second coded information; thus facilitating the location of lost or confused children.

[0057] refer to Figure 2 This application provides a missing person search system based on electronic paper interactive devices, including a server 100 and multiple electronic paper interactive devices 200 distributed in the target area, wherein the electronic paper interactive devices 200 are communicatively connected to the server 100; The electronic paper interactive device 200 is used to upload the first password information to the server 100 when the first operator inputs the first password information, and to upload the second password information to the server 100 when the second operator inputs the second password information. Server 100 is used to send the first coded information uploaded by the first electronic paper interactive device to all second electronic paper interactive devices for display when it receives the first coded information uploaded by the first electronic paper interactive device. The first electronic paper interactive device is the electronic paper interactive device 200 that uploaded the first coded information. The second electronic paper interactive devices are all electronic paper interactive devices 200 in the target area except for the first electronic paper interactive device. When receiving the second coded information uploaded by the second operator to any second electronic paper interactive device, the server 100 performs a matching test on the second coded information and the first coded information. If the second coded information and the first coded information match, the server 100 informs the second operator of the location information of the first electronic paper interactive device through the second electronic paper interactive device that uploaded the second coded information (for details, refer to the previous method for finding people based on electronic paper interactive devices).

[0058] Children who get lost or astray within the target area can input a first code message agreed upon with their guardian in advance through any electronic paper interactive device 200 (i.e., the first electronic paper interactive device). The guardian can input a second code message agreed upon with the lost or astray child in advance through any other electronic paper interactive device 200 (i.e., the second electronic paper interactive device) within the target area. After a successful match, the guardian can obtain the child's current location (i.e., the location of the first electronic paper interactive device), making it easier for the guardian to quickly find the lost or astray child.

[0059] In some implementations, server 100 is also used for: Send a first instruction to the first electronic paper interactive device to make the first electronic paper interactive device play video information for the first operator to watch (for details, refer to the previous method of finding people based on electronic paper interactive devices).

[0060] Please refer to Figure 3 , Figure 3This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device includes a processor 301 and a memory 302. The processor 301 and the memory 302 are interconnected and communicate with each other via a communication bus 303 and / or other connection mechanisms (not shown). The memory 302 stores a computer program executable by the processor 301. When the electronic device is running, the processor 301 executes the computer program to perform the person-finding method based on an electronic paper interactive device in any optional implementation of the above embodiments, to achieve the following functions: upon receiving first coded information input by a first operator to a first electronic paper interactive device and uploaded by the first electronic paper interactive device, the first coded information is sent to all second electronic paper interactive devices for display; upon receiving second coded information input by a second operator to any second electronic paper interactive device and uploaded by the second electronic paper interactive device, a matching detection is performed between the second coded information and the first coded information; if the second coded information matches the first coded information, the location information of the first electronic paper interactive device is informed to the second operator through the second electronic paper interactive device that uploaded the second coded information.

[0061] This application provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it performs a method for finding people based on an electronic paper interactive device in any optional implementation of the above embodiments, to achieve the following functions: upon receiving first coded information input by a first operator to a first electronic paper interactive device and uploaded by the first electronic paper interactive device, the first coded information is sent to all second electronic paper interactive devices for display; upon receiving second coded information input by a second operator to any second electronic paper interactive device and uploaded by the second electronic paper interactive device, a matching detection is performed between the second coded information and the first coded information; if the second coded information and the first coded information match, the location information of the first electronic paper interactive device is informed to the second operator through the second electronic paper interactive device that uploaded the second coded information.

[0062] The computer-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0063] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0064] Furthermore, the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0065] Furthermore, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0066] In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations.

[0067] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for finding people based on electronic paper interactive devices, applied to a server, wherein the server is communicatively connected to multiple electronic paper interactive devices distributed in a target area, and the electronic paper interactive devices are installed on public equipment in the target area, characterized in that... Including the following steps: A1. Upon receiving first coded information input by the first operator to the first electronic paper interactive device and uploaded by the first electronic paper interactive device, the first coded information is sent to all second electronic paper interactive devices for display; the second electronic paper interactive devices are all electronic paper interactive devices within the target area other than the first electronic paper interactive device; A2. Upon receiving second cipher information input by a second operator to any of the second electronic paper interactive devices and uploaded by the second electronic paper interactive devices, a matching detection is performed on the second cipher information and the first cipher information; A3. If the second cipher information matches the first cipher information, then the location information of the first electronic paper interactive device is communicated to the second operator by the second electronic paper interactive device that uploaded the second cipher information; Following step A1, the following steps are also included: A4. Send a first instruction to the first electronic paper interactive device to cause the first electronic paper interactive device to play video information for the first operator to watch; Step A4 includes: The identity information of the first operator is obtained based on the first coded information; the identity information includes age and gender. The video information is filtered based on the identity information; A first instruction is generated based on the selected video information and sent to the first electronic paper interactive device, causing the first electronic paper interactive device to play the selected video information.

2. The method for finding missing persons based on an electronic paper interactive device according to claim 1, characterized in that, Step A1 includes: Upon receiving initial first code information input by the first operator into the first electronic paper interactive device and uploaded by the first electronic paper interactive device, the validity of the initial first code information is verified. If the initial first code information is valid, then the initial first code information is confirmed as the final first code information; The final first cipher information is sent to all second electronic paper interactive devices for display.

3. The method for finding missing persons based on an electronic paper interactive device according to claim 1, characterized in that, Step A2 includes: When a second cipher information is received from the second operator inputting into any of the second electronic paper interactive devices and uploaded by the second electronic paper interactive devices, the cipher information that matches the first cipher information is extracted from the local database and recorded as the third cipher information. Compare the second cipher information and the third cipher information. If the second cipher information and the third cipher information match, then the second cipher information and the first cipher information are determined to match. Otherwise, the second cipher information and the first cipher information are determined to not match.

4. The method for finding missing persons based on an electronic paper interactive device according to claim 1, characterized in that, Step A3 includes: Obtain the location information of the first electronic paper interactive device and record it as the first location information; A second instruction containing the first location information is generated and sent to the second electronic paper interactive device that uploaded the second cipher information, so that the second electronic paper interactive device that uploaded the second cipher information displays the first location information.

5. The method for finding missing persons based on an electronic paper interactive device according to claim 4, characterized in that, Step A3 also includes: Obtain the location information of the second electronic paper interactive device that uploaded the second cipher information, and record it as the second location information; Based on the first location information and the second location information, a navigation route information is generated from the second electronic paper interactive device that uploaded the second cipher information to the first electronic paper interactive device; Generate a QR code for extracting the navigation route information; A third instruction containing the QR code is generated and sent to the second electronic paper interactive device that uploaded the second cipher information, causing the second electronic paper interactive device that uploaded the second cipher information to display the QR code.

6. A missing person search system based on an electronic paper interactive device, characterized in that, The system includes a server and multiple electronic paper interactive devices distributed in the target area, wherein the electronic paper interactive devices are communicatively connected to the server; the electronic paper interactive devices are installed on public equipment in the target area. The electronic paper interactive device is used to upload the first cipher information to the server when the first operator inputs the first cipher information, and to upload the second cipher information to the server when the second operator inputs the second cipher information. The server is configured to, upon receiving the first cipher information uploaded by the first electronic paper interactive device, send the first cipher information to all second electronic paper interactive devices for display; the first electronic paper interactive device is the electronic paper interactive device that uploaded the first cipher information; the second electronic paper interactive devices are all electronic paper interactive devices within the target area except for the first electronic paper interactive device; upon receiving second cipher information uploaded by the second electronic paper interactive device after input by the second operator, the server performs a matching detection on the second cipher information and the first cipher information; if the second cipher information and the first cipher information match, the server informs the second operator of the location information of the first electronic paper interactive device through the second electronic paper interactive device that uploaded the second cipher information; The server is also used for: Send a first instruction to the first electronic paper interactive device to cause the first electronic paper interactive device to play video information for the first operator to watch; The step of sending a first instruction to the first electronic paper interactive device to cause the first electronic paper interactive device to play video information for the first operator to view includes: The identity information of the first operator is obtained based on the first coded information; the identity information includes age and gender. The video information is filtered based on the identity information; A first instruction is generated based on the selected video information and sent to the first electronic paper interactive device, causing the first electronic paper interactive device to play the selected video information.

7. An electronic device, characterized in that, It includes a processor and a memory, the memory storing a computer program executable by the processor, and when the processor executes the computer program, it performs the steps of the method for finding people based on an electronic paper interactive device as described in any one of claims 1-5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it performs the steps of the missing person search method based on an electronic paper interactive device as described in any one of claims 1-5.

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