CN114491302B - Blockchain-based positioning and trajectory detection method, electronic student ID card and medium - Google Patents

Abstract

The invention discloses a block chain-based positioning and trajectory detection method, an electronic student ID card and a medium. The method includes: acquiring the first positioning information of the first block chain node and the second area at intervals of a first preset time interval. The second positioning information of the block chain node; according to the first positioning information and the second positioning information, detect whether the movement range of the first block chain node deviates from the reference range; when the movement range of the first block chain node deviates from the reference range, Based on the historical positioning information of the first blockchain node, determine the target movement trajectory information, and send the target movement trajectory information to the alarm terminal associated with the first blockchain node; wherein, the first blockchain node is the first electronic student ID , the second blockchain node is the second electronic student ID associated with the first electronic student ID. The invention aims at improving the flexibility of positioning and track detection of the electronic student ID card, and avoiding or alleviating potential safety hazards of data.

Description

Blockchain-based positioning and trajectory detection method, electronic student ID card and medium

technical field

The invention relates to the technical field of electronic student ID cards, in particular to a blockchain-based positioning and trajectory detection method, electronic student ID cards and media.

Background technique

In the scenes of primary and secondary schools and kindergartens, in order to prevent students from using smartphones and facilitate students to communicate with their parents, a proprietary device called an electronic student ID card has appeared on the market. Electronic student ID cards often have the function of positioning to prevent students from being lost. In related technologies, it is only possible to set a school area as a safety area in advance and detect whether a student is located in the safety area set in advance.

In this case, if teachers and students go out together with students, students will leave the safe area. But at this time, since the student is not actually lost, it will lead to false positives. Moreover, if the relevant data storage server is attacked by the network, the security area information may be tampered with, causing data security risks. Therefore, the above method for positioning and trajectory detection is inflexible, and there may be hidden dangers in data security.

Contents of the invention

The main purpose of the present invention is to provide a blockchain-based positioning and trajectory detection method, electronic student ID card and media, aiming to solve the technical problems of inflexible positioning and trajectory detection methods and potential data security risks.

In order to achieve the above object, the present invention provides a block chain-based positioning and trajectory detection method, the method is applied to the first block chain node, and the method includes:

Obtain the first location information of the first blockchain node and the second location information of the second blockchain node every first preset time interval;

Detecting whether the movement range of the first blockchain node deviates from a reference range according to the first positioning information and the second positioning information;

When the movement range of the first block chain node deviates from the reference range, based on the historical positioning information of the first block chain node, determine the target movement track information, and associate it with the first block chain node The alarm terminal sends the target movement track information;

Wherein, the first block chain node is a first electronic student ID card, and the second block chain node is a second electronic student ID card associated with the first electronic student ID card.

Optionally, the step of detecting whether the movement range of the first blockchain node deviates from a reference range according to the first positioning information and the second positioning information includes:

extracting the second satellite positioning information and the second detection time of each of the second blockchain nodes from the second positioning information of each of the second blockchain nodes;

Based on the second satellite positioning information of each of the second blockchain nodes and the detection time, respectively determine the second movement trajectory of each of the second blockchain nodes;

determining the reference trajectory based on the second movement trajectory of all the second blockchain nodes;

Extracting first satellite positioning information and a first detection time from the first positioning information;

determining a first movement track based on the first positioning information and the first detection time;

Detecting whether the movement range deviates from the reference range according to whether the first movement track deviates from the reference track.

Optionally, after the step of acquiring the first location information of the first blockchain node and the second location information of the second blockchain node at every first preset time interval, it further includes:

Obtain the school-leaving time period information saved in the block of the first block chain node;

Judging whether the current time point needs to leave school based on the time period information for leaving school;

If not, then perform the step of extracting the second satellite positioning information and the second detection time of each of the second blockchain nodes from the second positioning information of each of the second blockchain nodes, respectively. A step of;

If so, then based on the reference school-leaving track and the first positioning information stored in the block of the first blockchain node, detect whether the moving range of the first blockchain node deviates from the reference range .

Optionally, the step of detecting whether the movement range deviates from the reference range according to whether the first movement track deviates from the reference track includes:

Marking the reference track on the map to obtain the reference map area;

Marking the first movement track in the map to obtain a map area to be detected;

Detecting whether there is a target map area that does not overlap with the reference map area in the map area to be detected;

If so, calculate the distance between each position in the target map area and the reference map area, and select the maximum distance among the distances, and when the maximum distance is greater than a preset distance threshold, determine the movement The range deviates from the reference range.

Optionally, after the step of determining the first movement track based on the first positioning information and the first detection time, it further includes:

Obtain the reference satellite positioning information included in the block of the first blockchain node;

When the first satellite positioning information or the second satellite positioning information is different from the reference satellite positioning information, perform detecting whether the movement range deviates from the reference trajectory according to whether the first movement trajectory deviates from the reference trajectory Steps for the base range.

Optionally, before the step of acquiring the first location information of the first blockchain node and the second location information of the second blockchain node every first preset time interval, the method further includes:

Obtaining the preset course information sent by the server, and the corresponding relationship information between the preset course information and the preset electronic student ID;

Obtain the login user information of the first electronic student ID, and obtain the target course information corresponding to the login user information;

According to the target course information and the corresponding relationship information, determine the preset electronic student ID that is the same as the target course information as the second electronic student ID;

The first blockchain node is established based on the first electronic student ID, and the second blockchain node is established based on the second electronic student ID.

Optionally, the step of determining target movement track information based on the historical location information of the first blockchain node includes:

Acquiring the historical positioning information within the historical time period stored in the block of the first blockchain node, the historical positioning information including the historical satellite positioning position and the third detection time;

Based on the historical positioning information, mark the historical satellite positioning positions and the third detection time corresponding to each of the historical satellite positioning positions on the map to obtain target map information, and use the target map information as the target Mobile trajectory information.

Optionally, the method also includes:

identifying the user identity of the first blockchain node every second preset time interval;

When the identity of the user is successfully identified, the step of acquiring the first location information of the first blockchain node and the second location information of the second blockchain node at a first preset time interval is performed;

When the identification of the user identity fails, the target movement track information is sent to the alarm terminal associated with the first block chain node.

In addition, in order to achieve the above object, the present invention also provides an electronic student ID card, which includes a memory, a processor, and a block chain-based positioning system stored on the memory and operable on the processor. And a track detection program, when the block chain-based positioning and track detection program is executed by the processor, the steps of the block chain-based positioning and track detection method described in any one of the above are implemented.

In addition, in order to achieve the above object, the present invention provides a computer-readable storage medium, the computer-readable storage medium stores a positioning and trajectory detection program based on blockchain, and the positioning and trajectory detection program based on blockchain When the detection program is executed by the processor, the steps of the block chain-based positioning and trajectory detection method described in any one of the above are realized.

The embodiment of the present invention proposes a blockchain-based positioning and trajectory detection method, electronic student ID card and media, by acquiring the first positioning information and the second positioning information of the first blockchain node every first preset time interval Second positioning information of the second block chain node; according to the first positioning information and the second positioning information, detect whether the movement range of the first block chain node deviates from the reference range; in the first block When the movement range of the chain node deviates from the reference range, based on the historical positioning information of the first block chain node, determine the target movement track information, and send the target to the alarm terminal associated with the first block chain node Movement track information; wherein, the first block chain node is a first electronic student ID card, and the second block chain node is a second electronic student ID card associated with the first electronic student ID card. Since the information stored in the blockchain is difficult to be tampered with, the positioning information and trajectory information have high authenticity, which improves the accuracy of the data and reduces potential data security risks. At the same time, based on the first blockchain node and the second block The positioning information of the chain node detects whether the movement range of the first block chain node deviates from the reference range, referring to the positioning information of different electronic student ID cards, and can flexibly detect whether the student deviates from the reference range through positioning and trajectory in various scenarios, and When students deviate from the benchmark range, they will be reminded in time, which effectively improves flexibility and reduces potential data security risks.

Description of drawings

Fig. 1 is the structural representation of the electronic student ID card that the embodiment scheme of the present invention relates to;

2 is a schematic flow diagram of the first embodiment of the blockchain-based positioning and trajectory detection method of the present invention;

3 is a schematic flow diagram of the second embodiment of the blockchain-based positioning and trajectory detection method of the present invention;

FIG. 4 is a schematic flowchart of a third embodiment of the blockchain-based positioning and trajectory detection method of the present invention.

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Fig. 1, Fig. 1 is a schematic structural diagram of the electronic student ID card involved in the solution of the embodiment of the present invention.

As shown in FIG. 1 , the electronic student ID card may include: a processor 1001 , such as a CPU, a memory 1002 , and a communication bus 1003 . Wherein, the communication bus 1003 is used to realize connection and communication between these components. The memory 1002 can be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a disk memory. Optionally, the memory 1002 may also be a storage device independent of the foregoing processor 1001 .

Those skilled in the art can understand that the structure of the electronic student ID card shown in Figure 1 does not constitute a limitation on the electronic student ID card, and may include more or less components than those shown in the illustration, or combine some components, or different components layout.

As shown in FIG. 1 , the memory 1002 as a computer storage medium may include a blockchain-based positioning and trajectory detection program.

In the electronic student ID card shown in Figure 1, the processor 1001 can be used to call the block chain-based positioning and track detection program stored in the memory 1002, and perform the following operations:

Obtain the first location information of the first blockchain node and the second location information of the second blockchain node every first preset time interval;

Detecting whether the movement range of the first blockchain node deviates from a reference range according to the first positioning information and the second positioning information;

When the movement range of the first block chain node deviates from the reference range, based on the historical positioning information of the first block chain node, determine the target movement track information, and associate it with the first block chain node The alarm terminal sends the target movement track information;

Wherein, the first block chain node is a first electronic student ID card, and the second block chain node is a second electronic student ID card associated with the first electronic student ID card.

Further, the processor 1001 can call the block chain-based positioning and trajectory detection program stored in the memory 1002, and also perform the following operations:

extracting the second satellite positioning information and the second detection time of each of the second blockchain nodes from the second positioning information of each of the second blockchain nodes;

Based on the second satellite positioning information of each of the second blockchain nodes and the detection time, respectively determine the second movement trajectory of each of the second blockchain nodes;

determining the reference trajectory based on the second movement trajectory of all the second blockchain nodes;

Extracting first satellite positioning information and a first detection time from the first positioning information;

determining a first movement track based on the first positioning information and the first detection time;

Detecting whether the movement range deviates from the reference range according to whether the first movement track deviates from the reference track.

Further, the processor 1001 can call the block chain-based positioning and trajectory detection program stored in the memory 1002, and also perform the following operations:

Obtain the school-leaving time period information saved in the block of the first block chain node;

Judging whether the current time point needs to leave school based on the time period information for leaving school;

If not, then perform the step of extracting the second satellite positioning information and the second detection time of each of the second blockchain nodes from the second positioning information of each of the second blockchain nodes, respectively. A step of;

If so, then based on the reference school-leaving track and the first positioning information stored in the block of the first blockchain node, detect whether the moving range of the first blockchain node deviates from the reference range .

Further, the processor 1001 can call the block chain-based positioning and trajectory detection program stored in the memory 1002, and also perform the following operations:

Marking the reference track on the map to obtain the reference map area;

Marking the first movement track in the map to obtain a map area to be detected;

Detecting whether there is a target map area that does not overlap with the reference map area in the map area to be detected;

If so, calculate the distance between each position in the target map area and the reference map area, and select the maximum distance among the distances, and when the maximum distance is greater than a preset distance threshold, determine the movement The range deviates from the reference range.

Further, the processor 1001 can call the block chain-based positioning and trajectory detection program stored in the memory 1002, and also perform the following operations:

Obtain the reference satellite positioning information included in the block of the first blockchain node;

When both the first satellite positioning information and the second satellite positioning information are different from the reference satellite positioning information, perform detecting whether the movement range is based on whether the first movement track deviates from the reference track. Steps away from the reference range.

Further, the processor 1001 can call the block chain-based positioning and trajectory detection program stored in the memory 1002, and also perform the following operations:

Obtaining the preset course information sent by the server, and the corresponding relationship information between the preset course information and the preset electronic student ID;

Obtain the login user information of the first electronic student ID, and obtain the target course information corresponding to the login user information;

According to the target course information and the corresponding relationship information, determine the preset electronic student ID that is the same as the target course information as the second electronic student ID;

The first blockchain node is established based on the first electronic student ID, and the second blockchain node is established based on the second electronic student ID.

Further, the processor 1001 can call the block chain-based positioning and trajectory detection program stored in the memory 1002, and also perform the following operations:

Acquiring the historical positioning information within the historical time period stored in the block of the first blockchain node, the historical positioning information including the historical satellite positioning position and the third detection time;

Based on the historical positioning information, mark the historical satellite positioning positions and the third detection time corresponding to each of the historical satellite positioning positions on the map to obtain target map information, and use the target map information as the target Mobile trajectory information.

Further, the processor 1001 can call the block chain-based positioning and trajectory detection program stored in the memory 1002, and also perform the following operations:

identifying the user identity of the first blockchain node every second preset time interval;

When the identity of the user is successfully identified, the step of acquiring the first location information of the first blockchain node and the second location information of the second blockchain node at a first preset time interval is performed;

When the identification of the user identity fails, the target movement track information is sent to the alarm terminal associated with the first block chain node.

Referring to Fig. 2, the first embodiment of the present invention provides a blockchain-based positioning and trajectory detection method, the blockchain-based positioning and trajectory detection method comprising:

Step S10, acquiring the first location information of the first blockchain node and the second location information of the second blockchain node every first preset time interval;

Step S20, according to the first positioning information and the second positioning information, detect whether the movement range of the first blockchain node deviates from a reference range;

Step S30, when the moving range of the first block chain node deviates from the reference range, based on the historical location information of the first block chain node, determine the target moving track information, and send to the first block chain The alarm terminal associated with the chain node sends the target movement track information;

Wherein, the first block chain node is a first electronic student ID card, and the second block chain node is a second electronic student ID card associated with the first electronic student ID card.

The first blockchain node is the first electronic student ID card, and the first electronic student ID card is the executive body, which mainly refers to the electronic student ID card that needs to detect location information and track information. The first preset time interval is a preset time interval used to limit the timing of acquiring positioning information. The first location information is the location information detected and stored in the block by the first blockchain node. The second block chain node is the electronic student ID card associated with the first electronic student in advance, and belongs to a node in the block chain. The second location information is location information detected by the second block chain node and stored in the block. The moving range refers to the geographic location range through which the first blockchain node moves. The reference range is the geographical range where the specified first electronic student ID should be located. The historical location information is the location information of the first electronic student ID card within a period of time before the current time point, including the historical location and the historical detection time corresponding to the historical location. The target moving track information is the moving track information drawn or determined based on the historical positioning information. The alarm terminal is a terminal used to warn that the trajectory of the first electronic student ID card deviates. For example, the terminal of the student's guardian corresponding to the first electronic student ID card may be used as an alarm terminal.

Optionally, based on whether the first positioning information and the second positioning information are the same, if they are the same, it indicates that the first electronic student ID and the second electronic student ID are at the same positioning location, and the movement range can be determined at this time There is no deviation from the baseline range. The reason is that in the actual campus scene, students often carry out activities in groups, and the locations they pass are mostly similar. If some students deviate from the group, the detected first positioning information and the second positioning information Information can vary widely. Therefore, in this embodiment, the main application scenario is that the students who hold the first electronic student ID card and the second electronic student ID card originally concentrated their activities in a specific place, but since they are not limited to a specific place, their Compared with the prior art, the flexibility is improved.

For example, when students holding the first electronic student ID card and the second electronic student ID card are carrying out activities in the school, both the first location information and the second location information should be mainly located within the school. And when teachers and students take students to go out collectively, it only needs to be further based on the similarity between the first positioning information and the second positioning information at this time, then it can be determined whether the student holding the first electronic student ID deviates from the group, and may Lost phenomenon occurs. Therefore, by introducing the second positioning information of the second electronic student ID card to detect whether the movement range of the first blockchain deviates from the reference range, the flexibility of detecting whether the movement range deviates from the reference range in various scenarios can be improved. It can further improve the flexibility of detecting whether students deviate from the group in various scenarios. Moreover, the first electronic student ID card and each second electronic student ID card are used as a block chain node to store data through blocks, effectively preventing data from being tampered with.

Optionally, the first positioning information includes first satellite positioning information detected through satellites and a detection time of detecting the first satellite positioning information.

Optionally, the blockchain can be a distributed ledger, a private chain, a public chain or an alliance chain.

Optionally, when the first block chain node detects the location information, perform a hash operation on the location information, generate a block hash value, and combine the location information and its corresponding block hash value with a transaction In the form of broadcasting to each second blockchain node of the blockchain, each second blockchain node subsequently stores the transaction in its own blockchain based on the consensus mechanism, thereby realizing multi-party storage of positioning information. When the hash value of the information is inconsistent with the hash value published in the blockchain node, it means that the positioning information has been tampered with.

Optionally, the target moving track information may be in the form of a character string or a data list, or may also be marked on a map. Regardless of the form, the target moving track information is obtained according to historical positioning information, and includes historical position information and historical time information.

In one embodiment, the step of determining target movement track information based on the historical location information of the first blockchain node includes:

Acquiring the historical positioning information within the historical time period stored in the block of the first blockchain node, the historical positioning information including the historical satellite positioning position and the third detection time;

Based on the historical positioning information, mark the historical satellite positioning positions and the third detection time corresponding to each of the historical satellite positioning positions on the map to obtain target map information, and use the target map information as the target Mobile trajectory information.

The historical time period is the time period before the current point in time. The historical satellite positioning position is the position detected by the first student ID through satellite positioning within the historical time period. The third detection time is the time for detecting historical satellite positioning positions. The target map information is map information including the historical satellite positioning position and the third detection time. Specifically, the target map information may include latitude and longitude information and a third detection time associated with the latitude and longitude information.

By marking the historical location information on the map, it is easy to view the student's movement track.

In one embodiment, the method also includes:

identifying the user identity of the first blockchain node every second preset time interval;

When the identity of the user is successfully identified, the step of acquiring the first location information of the first blockchain node and the second location information of the second blockchain node at a first preset time interval is performed;

When the identification of the user identity fails, the target movement track information is sent to the alarm terminal associated with the first block chain node.

The second preset time interval is a preset time interval used to limit the opportunity to identify the identity of the user. The user identity is the identity of the user holding the first electronic student ID card.

Optionally, the identity of the user of the first blockchain node is identified through fingerprint recognition, voiceprint recognition or face recognition.

In the case of successful recognition, it can detect whether the moving track deviates from the reference range, and in the case of failed recognition, directly generate and send the target moving track information, so that in some scenarios, the alarm terminal can obtain the first electronic student ID card in time movement track. For example, in the scene where the student may have been lost, the first electronic student ID card may not be carried, or it may be carried but it is not convenient for identity verification. At this time, by directly sending the target movement track information, the alarm terminal can obtain the student's lost information in time. moving track.

In this implementation, the first positioning information of the first blockchain node and the second positioning information of the second blockchain node are obtained at every first preset time interval; according to the first positioning information and the The second positioning information, detecting whether the movement range of the first block chain node deviates from the reference range; when the movement range of the first block chain node deviates from the reference range, based on the first block chain The historical positioning information of the node determines the target movement trajectory information, and sends the target movement trajectory information to the alarm terminal associated with the first block chain node; wherein, the first block chain node is the first electronic student ID , the second blockchain node is the second electronic student ID associated with the first electronic student ID. Since the information stored in the blockchain is difficult to be tampered with, the positioning information and trajectory information have high authenticity, which improves the accuracy of the data and reduces potential data security risks. At the same time, based on the first blockchain node and the second block The positioning information of the chain node detects whether the movement range of the first block chain node deviates from the reference range, referring to the positioning information of different electronic student ID cards, and can flexibly detect whether the student deviates from the reference range through positioning and trajectory in various scenarios, and When students deviate from the benchmark range, they will be reminded in time, which effectively improves flexibility and reduces potential data security risks.

Referring to FIG. 3, the second embodiment of the present invention provides a blockchain-based positioning and trajectory detection method. Based on the first embodiment shown in FIG. 2 above, the step S20 includes:

Step S21, respectively extracting the second satellite positioning information and the second detection time of each second blockchain node from the second positioning information of each second blockchain node;

Step S22, based on the second satellite positioning information of each of the second blockchain nodes and the detection time, respectively determine the second movement trajectory of each of the second blockchain nodes;

Step S23, determining the reference trajectory based on the second movement trajectory of all the second blockchain nodes;

Step S24, extracting the first satellite positioning information and the first detection time from the first positioning information;

Step S25, determining a first movement track based on the first positioning information and the first detection time;

Step S26, according to whether the first moving track deviates from the reference track, detect whether the moving range deviates from the reference range.

The number of second block chain nodes is multiple. Each second blockchain node has corresponding second location information. The second positioning information includes second satellite positioning information and a second detection time. The second satellite positioning information is the position information detected by the second blockchain node through satellite positioning. The second detection time is the time when the second block chain detects the second satellite positioning information. Each detected satellite positioning position corresponds to a detection time. The second movement trajectory is the trajectory of the movement of the second blockchain node. Each second blockchain node has a corresponding second movement track. The reference trajectory is information used to describe the overall trajectory of the second electronic student ID card obtained based on the second movement trajectory. The first satellite positioning information is the position information detected by the first electronic student ID through satellite positioning. The first detection time is the detection time when the first electronic student ID card detects the first satellite positioning information. The first movement track is the movement track of the first electronic student ID card.

Optionally, the reference trajectory includes all second movement trajectories.

Optionally, the first movement trajectory is obtained by sorting each piece of first satellite positioning information in the list according to the first detection time from early to late. Alternatively, the first satellite positioning information may also be marked on the map to obtain the first movement track.

Optionally, the second movement trajectory is obtained by sorting each piece of second satellite positioning information in the list according to the second detection time from early to late. Alternatively, the second satellite positioning information may also be marked on the map to obtain the second movement track.

In one embodiment, after the step of acquiring the first location information of the first blockchain node and the second location information of the second blockchain node at every first preset time interval, it further includes:

Obtain the school-leaving time period information saved in the block of the first block chain node;

Judging whether the current time point needs to leave school based on the time period information for leaving school;

If not, then perform the step of extracting the second satellite positioning information and the second detection time of each of the second blockchain nodes from the second positioning information of each of the second blockchain nodes, respectively. A step of;

If so, then based on the reference school-leaving track and the first positioning information stored in the block of the first blockchain node, detect whether the moving range of the first blockchain node deviates from the reference range .

The school-leaving time period information is pre-stored in the block, and is used to indicate the time period information of when the student leaves school. The reference school leaving track is pre-stored in the block, and is used to indicate the corresponding moving track when the first electronic student ID card leaves school.

In the scene where there is no need to leave the school, the students should be in a group activity. At this time, the first positioning information can be combined with the second positioning information to detect whether the student's position is out of the group. In the case of leaving the group, the target trajectory needs to be sent information. In the scenario where students need to leave school, there is no specific rule between the first positioning information and the second positioning information. At this time, it can be combined with the reference school leaving track to detect whether the first electronic student ID deviates from the expected moving route. For example, the route home can be used as the reference trajectory.

In an embodiment, the step of detecting whether the movement range deviates from the reference range according to whether the first movement track deviates from the reference track includes:

Marking the reference track on the map to obtain the reference map area;

Marking the first movement track in the map to obtain a map area to be detected;

Detecting whether there is a target map area that does not overlap with the reference map area in the map area to be detected;

If so, calculate the distance between each position in the target map area and the reference map area, and select the maximum distance among the distances, and when the maximum distance is greater than a preset distance threshold, determine the movement The range deviates from the reference range.

The reference map area is the map area obtained by marking the map with the reference track. The map area to be detected is a map area obtained through the first movement track. The target map area is the tendency of the non-overlapping part of the map area to be detected and the reference map area. The preset distance threshold is a preset distance threshold used to indicate whether to deviate from the reference range.

Optionally, the reference map area may be represented by latitude and longitude information. By marking all the latitude and longitude information corresponding to the reference trajectory in the map, and fitting all the latitude and longitude information corresponding to the reference trajectory, the first fitting figure in the map is obtained as the reference map area.

Optionally, the map area to be detected can be represented by latitude and longitude information. By marking all the latitude and longitude information corresponding to the first movement track in the map, and fitting all the latitude and longitude information corresponding to the first movement track, the second position in the map is obtained. The fitting graph is used as the map area to be detected.

Optionally, by calculating the distance between all the latitude and longitude information in the target map area and all the latitude and longitude information in the reference map area, the maximum distance is obtained, and when the maximum distance is greater than the preset distance threshold, it indicates that the first electronic student ID card has moved far away from the reference range.

In an embodiment, after the step of determining the first movement track based on the first positioning information and the first detection time, it further includes:

Obtain the reference satellite positioning information included in the block of the first blockchain node;

When both the first satellite positioning information and the second satellite positioning information are different from the reference satellite positioning information, perform detecting whether the movement range is based on whether the first movement track deviates from the reference track. Steps away from the reference range.

The reference satellite positioning information is fixed satellite positioning information stored in the block in advance.

For example, the satellite positioning information corresponding to the school may be used as the reference satellite positioning information.

When the first satellite positioning information and the second satellite positioning information are different from the reference satellite positioning information, it indicates that the students may go out together. At this time, in order to still detect whether the first electronic student ID is lost in the group going out scene, it is necessary Further, based on whether the first moving track deviates from the reference track, it is detected whether the moving range is in the reference range, so as to avoid the situation of wrongly judging that the moving range deviates in the scene of group going out.

In this embodiment, by extracting the second satellite positioning information and the second detection time of each of the second blockchain nodes from the second positioning information of each of the second blockchain nodes ; Based on the second satellite positioning information of each of the second blockchain nodes and the detection time, respectively determine the second movement trajectory of each of the second blockchain nodes; based on all the second The second moving trajectory of the blockchain node determines the reference trajectory; extracts the first satellite positioning information and the first detection time from the first positioning information; based on the first positioning information and the first Detecting time to determine a first movement track; detecting whether the movement range deviates from the reference range according to whether the first movement track deviates from the reference track. Therefore, based on the second moving track of the second electronic student ID card as a reference, it can be judged whether the first moving track deviates from the reference track, so that in the scene of group going out, it is possible to continue to detect whether the moving track of the first electronic student ID card deviates, Improved application flexibility in different scenarios.

Referring to FIG. 4, the third embodiment of the present invention provides a blockchain-based positioning and trajectory detection method. Based on the first embodiment shown in FIG. 2 above, before the step S10, it also includes:

Step S40, obtaining the preset course information sent by the server, and the correspondence relationship information between the preset course information and the preset electronic student ID;

Step S50, obtaining the login user information of the first electronic student ID card, and obtaining the target course information corresponding to the login user information;

Step S60, according to the target course information and the corresponding relationship information, determine the preset electronic student ID that is the same as the target course information as the second electronic student ID;

Step S70, establishing the first blockchain node based on the first electronic student ID, and establishing the second blockchain node based on the second electronic student ID.

The preset course information is preset course information. Each preset course information has a corresponding preset electronic student ID. The preset electronic student ID ID is an ID for identifying the electronic student ID card. Both the first electronic student ID card and the second electronic student ID card have corresponding identifications. The login user information is the information of the user who has logged in the first electronic student ID card. The target course information is course information corresponding to the login user information.

When determining the second electronic student ID, it is necessary to select the first electronic student ID from the preset electronic student IDs with the same target course information, and use the remaining preset electronic student IDs after elimination as the second electronic student ID.

In one scenario, students corresponding to different courses may be different. At this time, in order to accurately detect whether the movement track of the first electronic student ID deviates from the reference track, a second block chain node will be established for the electronic student ID card with the same course, In this way, it is possible to more specifically detect whether the movement trajectory deviates from scenarios such as elective courses, and improve the application flexibility in the elective course scenario.

In this embodiment, by obtaining the preset course information sent by the server, and the corresponding relationship information between the preset course information and the preset electronic student ID; acquiring the login user information of the first electronic student ID, and obtaining The target course information corresponding to the login user information; according to the target course information and the correspondence information, determine the preset electronic student ID that is the same as the target course information as the second electronic student ID; based on The first electronic student ID establishes the first block chain node, and establishes the second block chain node based on the second electronic student ID. It is possible to further improve the flexibility of detecting whether the movement range deviates from the reference range when courses are different.

It should be noted that, as used herein, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or system comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or system. Without further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article or system comprising that element.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the technical solution of the present invention can be embodied in the form of a software product in essence or in other words, the part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM) as described above. , magnetic disk, optical disk), including several instructions to make an electronic student ID card execute the method described in each embodiment of the present invention.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields , are all included in the scope of patent protection of the present invention in the same way.

Claims (7)

1. A positioning and track detection method based on a block chain is applied to a first block chain node, and the method comprises the following steps:

acquiring first positioning information of the first block chain node and second positioning information of the second block chain node at intervals of a first preset time interval;

acquiring off-calibration time period information stored in the block of the first block link node;

judging whether the current time point needs to be calibrated based on the calibration time period information;

if not, detecting whether the moving range of the first block chain node deviates from a reference range according to the first positioning information and the second positioning information, wherein the step of detecting whether the moving range of the first block chain node deviates from the reference range according to the first positioning information and the second positioning information comprises the following steps: acquiring reference satellite positioning information included in a block of the first block chain node, and detecting whether the movement range deviates from the reference range when the first positioning information and the second positioning information are different from the reference satellite positioning information;

if so, detecting whether the moving range of the first block chain node deviates from the reference range based on a reference deviation track stored in a block of the first block chain node and the first positioning information;

when the moving range of the first block chain node deviates from the reference range, determining target moving track information based on historical positioning information of the first block chain node, and sending the target moving track information to an alarm terminal associated with the first block chain node;

the first block chain node is a first electronic student certificate, the second block chain node is a second electronic student certificate associated with the first electronic student certificate, and the reference satellite positioning information is satellite positioning information corresponding to a school;

before the step of acquiring the first positioning information of the first blockchain node and the second positioning information of the second blockchain node at every first preset time interval, the method further includes:

acquiring preset course information sent by a server and corresponding relation information between the preset course information and a preset electronic student identity card identifier;

acquiring login user information of the first electronic student certificate, and acquiring target course information corresponding to the login user information;

determining the preset electronic student certificate which is the same as the target course information as the second electronic student certificate according to the target course information and the corresponding relation information;

and establishing the first block chain node based on the first electronic student identity card, and establishing the second block chain node based on the second electronic student identity card.

2. The method of claim 1, wherein the step of detecting whether the moving range of the first blockchain node deviates from a reference range according to the first positioning information and the second positioning information comprises:

extracting second satellite positioning information and second detection time of each second blockchain node from the second positioning information of each second blockchain node respectively;

determining a second movement trajectory of each second blockchain node respectively based on the second satellite positioning information and the detection time of each second blockchain node;

determining a reference track based on the second movement tracks of all the second blockchain nodes;

extracting first satellite positioning information and first detection time from the first positioning information;

determining a first movement track based on the first positioning information and the first detection time;

and acquiring reference satellite positioning information included in the block of the first block chain node, and detecting whether the movement range deviates from the reference range according to whether the first movement track deviates from the reference track when the first satellite positioning information and the second satellite positioning information are different from the reference satellite positioning information.

3. The method according to claim 2, wherein the step of detecting whether the movement range deviates from the reference range according to whether the first movement trajectory deviates from the reference trajectory comprises:

marking the reference track in a map to obtain a reference map area;

marking the first moving track in the map to obtain a map area to be detected;

detecting whether a target map area which is not overlapped with the reference map area exists in the to-be-detected map area or not;

if yes, calculating the distance between each position in the target map area and the reference map area, selecting the maximum distance from the distances, and determining that the moving range deviates from the reference range when the maximum distance is greater than a preset distance threshold.

4. The method of claim 1, wherein the step of determining target movement trajectory information based on historical positioning information of the first blockchain node comprises:

obtaining historical positioning information in a historical time period saved in a block of the first block chain node, wherein the historical positioning information comprises a historical satellite positioning position and third detection time;

and marking the historical satellite positioning positions and the third detection time corresponding to each historical satellite positioning position in a map based on the historical positioning information to obtain target map information, and taking the target map information as the target moving track information.

5. The method of claim 1, wherein the method further comprises:

identifying the user identity of the first block chain node every a second preset time interval;

when the user identity is successfully identified, a step of acquiring first positioning information of the first block chain node and second positioning information of the second block chain node at intervals of a first preset time interval is executed;

and when the user identity is failed to be identified, sending the target movement track information to the alarm terminal associated with the first block link point.

6. An electronic student card comprising a memory, a processor and a blockchain based positioning and trajectory detection program stored on the memory and executable on the processor, the blockchain based positioning and trajectory detection program when executed by the processor implementing the steps of the blockchain based positioning and trajectory detection method according to any one of claims 1 to 5.

7. A computer-readable storage medium, wherein a blockchain-based positioning and trajectory detection program is stored on the computer-readable storage medium, and when the blockchain-based positioning and trajectory detection program is executed by a processor, the steps of the blockchain-based positioning and trajectory detection method according to any one of claims 1 to 5 are implemented.

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