CN118917552B - A construction site material tracking method and system based on the combination of Bluetooth and RFID technology - Google Patents

A construction site material tracking method and system based on the combination of Bluetooth and RFID technology

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CN118917552B
CN118917552B CN202411301981.3A CN202411301981A CN118917552B CN 118917552 B CN118917552 B CN 118917552B CN 202411301981 A CN202411301981 A CN 202411301981A CN 118917552 B CN118917552 B CN 118917552B
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田家斌
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Abstract

本发明提供一种基于蓝牙和RFID技术相结合的建筑工地物资追踪方法和系统，本发明采用蓝牙和RFID技术相结合的方式实现对工地物资耗材的信息采集和传输，并根据物资的转移路径、在各点位的停留时长和转移时长，对建筑物资进行异常情况判断；同时，工地巡逻车动态调整巡检路径，工地巡逻车与各点位的第一蓝牙终端的通信采用动态加密技术；从而使得本发明的方案能够提高对工地物资追溯的精准性，并同时提升工地物资管理的效率。

The present invention provides a construction site material tracking method and system based on the combination of Bluetooth and RFID technologies. The present invention adopts the combination of Bluetooth and RFID technologies to realize the information collection and transmission of construction site material consumables, and judges abnormal conditions of construction materials based on the transfer path of the materials, the length of stay at each point and the transfer time; at the same time, the construction site patrol car dynamically adjusts the inspection path, and the communication between the construction site patrol car and the first Bluetooth terminal at each point adopts dynamic encryption technology; thereby, the solution of the present invention can improve the accuracy of tracing construction site materials and at the same time improve the efficiency of construction site material management.

Description

Building site material tracking method and system based on combination of Bluetooth and RFID technology
Technical Field
The invention relates to the technical field of material tracking, in particular to a building site material tracking method and system based on combination of Bluetooth and RFID technologies.
Background
At present, the construction site is complicated in environment caused by more personnel and operation of construction equipment, each area is not clearly divided, the required construction consumables of the construction are various, the management of the construction materials in the construction site is not perfect enough, and the fine management is lacking, so that the phenomena of waste, loss and the like of a plurality of construction materials are caused, and the construction cost cannot be effectively controlled.
In the existing management mode of building materials, a manual management mode is mostly adopted, and the mode not only consumes a great amount of manpower and material resources, but also can not track the condition of the materials when the materials are lost or abnormal. At present, with the popularization of new generation information technology in various fields, how to manage and trace materials of a construction site by adopting a digital method becomes a problem to be solved at present.
Based on the problems, the invention provides a construction site material tracking method and system based on the combination of Bluetooth and RFID technologies.
Disclosure of Invention
Aiming at the problems of nonstandard construction site material management, lack of traceability and the like at present, the invention provides a construction site material tracking method based on the combination of Bluetooth and RFID technology, which specifically comprises the following steps:
s1, when building consumables enter a current point virtual area, reading RFID tags on the building consumables by a tag reader-writer in the current point virtual area, and writing the position and the entering time of the current point into the RFID tags;
When the building consumable leaves the current point location virtual area, reading an RFID tag on the building consumable by a tag reader-writer in the current point location virtual area, and writing the leaving time into the RFID tag;
Further, the number of RFID tags on a batch of building consumables is one or more, and is determined by the type of consumables.
Further, dividing the building site into a plurality of points according to the areas, wherein each point is an area, namely a point virtual area;
For example, the whole space of the construction site is divided into four points A, B, C and D according to the regions, each point corresponds to one region, namely a point virtual region, and the four regions form the whole space of the construction site.
Further, a tag reader-writer and a first Bluetooth terminal are arranged in each point location virtual area;
The tag reader-writer can read data in the RFID tag on the building consumable, and is connected with the first Bluetooth terminal;
further, the tag reader-writer reads the content of the data in the RFID tag on the construction consumable, wherein the content comprises the construction consumable number, the construction consumable name, the supplier number, the supplier name and the transfer path;
when a plurality of RFID tags are arranged in the batch of building consumables, the batch of building consumables corresponds to the plurality of data.
The transfer path comprises the time when the construction consumable enters and leaves each point virtual area, and the specific data format is { point location 1, entering time, leaving time ], [ point location 2, entering time, leaving time ],.[ point location i, entering time, leaving time ] };
for example, when a construction consumable enters a point i+1, the number and the entry time of the point i+1 are written into a transfer path in an RFID tag, such as { [ point 1, entry time, exit time ], [ point 2, entry time, exit time ],.[ point i, entry time, exit time ], [ point i+1, entry time ] };
when the construction consumable leaves the point i+1, the time leaving the point i+1 is written into a transfer path in the RFID tag, such as { [ point 1, entering time, leaving time ], [ point 2, entering time, leaving time ],.[ point i, entering time, leaving time ], [ point i+1, entering time, leaving time ] }.
When the building consumables leave the point i+1, counting the number of the building consumables to be equal, taking the number of RFID tags with the same supplier number as the total number of the batch of the building consumables, and writing the total number into each RFID tag belonging to the same batch of the building consumables;
for example, for a lot of construction consumables, which contains 3 RFID tags, the construction consumables number and the supplier number in the 3 RFID tags are equal, and when the construction consumables leave the spot, 3 of the total number is written into each tag of the 3 RFID tags of the lot of construction consumables.
S2, the tag reader-writer sends the data in the RFID tag on the read building consumable to a first Bluetooth terminal which is arranged in the same point virtual area with the tag reader-writer;
s3, the first Bluetooth terminal stores data in the RFID tag on the construction consumable sent by the tag reader-writer and analyzes the data to obtain a data analysis result;
When the construction site patrol car enters the current point location virtual area, the first Bluetooth terminal sends data in all RFID tags stored by the first Bluetooth terminal to the construction site patrol car;
the construction site patrol car patrol all the points according to the patrol path and collects a plurality of RFID tag data in a first Bluetooth terminal in all the points;
further, a second Bluetooth terminal is installed on the site patrol car, and when the site patrol car enters the point virtual area, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the point virtual area.
S4, dynamically adjusting a patrol path by the construction site patrol car according to abnormal conditions of the building consumables in each point virtual area;
S5, the construction site patrol car transmits the collected data in the first Bluetooth terminal of each point virtual area to a material tracking platform, and the material tracking platform dynamically displays the construction consumable data in real time.
The invention further provides a construction site material tracking system based on the combination of Bluetooth and RFID technologies, and the system specifically comprises an RFID tag, a tag reader-writer, a first Bluetooth terminal, a construction site patrol car and a second Bluetooth terminal;
The system divides the construction site into a plurality of point location virtual areas;
Each point location virtual area is set to comprise a tag reader-writer and a first Bluetooth terminal, and the tag reader-writer is in communication connection with the first Bluetooth terminal;
installing RFID tags on the building consumables;
the construction site patrol car carries out patrol on the virtual areas of all the points according to the patrol path, the second Bluetooth terminal is arranged on the construction site patrol car, and when the construction site patrol car enters the virtual areas of the points, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the virtual areas of the points.
Specifically, the system performs the steps of:
s1, when building consumables enter a current point virtual area, reading RFID tags on the building consumables by a tag reader-writer in the current point virtual area, and writing the position and the entering time of the current point into the RFID tags;
When the building consumable leaves the current point location virtual area, reading an RFID tag on the building consumable by a tag reader-writer in the current point location virtual area, and writing the leaving time into the RFID tag;
The number of the RFID tags on the building consumable is one or more, and the RFID tag is specifically determined by the type of the consumable.
Further, the tag reader-writer reads the content of the data in the RFID tag on the construction consumable, wherein the content comprises the construction consumable number, the construction consumable name, the supplier number, the supplier name and the transfer path;
S2, the tag reader-writer sends the data in the RFID tag on the read building consumable to a first Bluetooth terminal which is arranged in the same point virtual area with the tag reader-writer;
s3, the first Bluetooth terminal stores data in the RFID tag on the construction consumable sent by the tag reader-writer and analyzes the data to obtain a data analysis result;
When the construction site patrol car enters the current point location virtual area, the first Bluetooth terminal sends data in all RFID tags stored by the first Bluetooth terminal to the construction site patrol car;
the construction site patrol car patrol all the points according to the patrol path and collects a plurality of RFID tag data in a first Bluetooth terminal in all the points;
further, a second Bluetooth terminal is installed on the site patrol car, and when the site patrol car enters the point virtual area, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the point virtual area.
S4, dynamically adjusting a patrol path by the construction site patrol car according to abnormal conditions of the building consumables in each point virtual area;
S5, the construction site patrol car transmits the collected data in the first Bluetooth terminal of each point virtual area to a material tracking platform, and the material tracking platform dynamically displays the construction consumable data in real time.
The beneficial effects of the invention are as follows:
1. According to the invention, a mode of combining RFID and Bluetooth technology is adopted to dynamically track batch building consumables, wherein RFID communication can enable information to be read when RFID tags are positioned in the building consumables, and Bluetooth technology can effectively avoid the problems of unstable or interference of various communication caused by complex environments or poor network signals in a building site by other communication technologies such as wifi and the like.
2. According to the method, whether the building consumable is abnormal consumable or not is judged according to the transfer paths of the RFID tags, the number of batches of building consumable at each point, the stay time of the RFID tags at each point and the transfer time of the RFID tags among each point, or the consumable is focused, and the building consumable is processed by adopting different processing modes, so that the accuracy of tracking, judging and processing the consumable is improved, and the overall operation efficiency of a construction site is improved.
3. According to the method, firstly, whether the batch of building consumables are abnormal or not is judged according to the transfer path of the RFID tags, and then the building consumables are judged according to the number of the RFID tags, the stay time and the transfer time, so that the judging efficiency of the building consumables is effectively improved;
4. according to whether the construction consumables pay attention to the dynamically adjusted patrol path of the construction patrol car, the construction consumables which possibly risk are subjected to quick and important patrol, so that the accuracy of tracking the construction consumables is improved;
5. The method adopts the product of the times that the site patrol car enters the site virtual area and the MAC address of the first Bluetooth terminal of the site as the first key to encrypt the data, and because the patrol path of the site patrol car is dynamically changed, the times that the site patrol car enters the site virtual area is not easy to be acquired by external personnel, therefore, the encryption mode avoids the possibility that the external personnel falsify the data of the first Bluetooth terminal and send the data to the site patrol car, thereby reducing the possibility that the external personnel illegally acts on the construction consumables.
The foregoing description is only an overview of the present invention, and is intended to be more clearly understood as the present invention, as it is embodied in the following description, and is intended to be more clearly understood as the following description of the preferred embodiments, given in detail, of the present invention, along with other objects, features and advantages of the present invention.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a block diagram of a construction site asset tracking system based on a combination of Bluetooth and RFID technology;
fig. 2 is a flow chart of a construction site material tracking method based on the combination of bluetooth and RFID technology.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly, and may, for example, be connected, removably connected, or integrated, mechanically connected, electrically connected, directly connected, indirectly connected through intermediaries, or in communication between two elements or in interaction with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
[ Embodiment one ]
The invention provides a construction site material tracking method based on combination of Bluetooth and RFID technologies, which specifically comprises the following steps:
s1, when building consumables enter a current point virtual area, reading RFID tags on the building consumables by a tag reader-writer in the current point virtual area, and writing the position and the entering time of the current point into the RFID tags;
When the building consumable leaves the current point location virtual area, reading an RFID tag on the building consumable by a tag reader-writer in the current point location virtual area, and writing the leaving time into the RFID tag;
Further, the number of RFID tags on a batch of building consumables is one or more, and is determined by the type of consumables.
Further, dividing the building site into a plurality of points according to the areas, wherein each point is an area, namely a point virtual area;
For example, the whole space of the construction site is divided into four points A, B, C and D according to the regions, each point corresponds to one region, namely a point virtual region, and the four regions form the whole space of the construction site.
Further, a tag reader-writer and a first Bluetooth terminal are arranged in each point location virtual area;
The tag reader-writer can read data in the RFID tag on the building consumable, and is connected with the first Bluetooth terminal;
further, the tag reader-writer reads the content of the data in the RFID tag on the construction consumable, wherein the content comprises the construction consumable number, the construction consumable name, the supplier number, the supplier name and the transfer path;
when a plurality of RFID tags are arranged in the batch of building consumables, the batch of building consumables corresponds to the plurality of data.
The transfer path is the time when the construction consumable enters and leaves each point virtual area, and the specific data format is { point location 1, entry time, exit time ], [ point location 2, entry time, exit time ],.[ point location i, entry time, exit time ] };
for example, when a construction consumable enters a point i+1, the number and the entry time of the point i+1 are written into a transfer path in an RFID tag, such as { [ point 1, entry time, exit time ], [ point 2, entry time, exit time ],.[ point i, entry time, exit time ], [ point i+1, entry time ] };
when the construction consumable leaves the point i+1, the time leaving the point i+1 is written into a transfer path in the RFID tag, such as { [ point 1, entering time, leaving time ], [ point 2, entering time, leaving time ],.[ point i, entering time, leaving time ], [ point i+1, entering time, leaving time ] }.
When the building consumables leave the point i+1, counting the number of the building consumables to be equal, taking the number of RFID tags with the same supplier number as the total number of the batch of the building consumables, and writing the total number into each RFID tag belonging to the same batch of the building consumables;
for example, for a lot of construction consumables, which contains 3 RFID tags, the construction consumables number and the supplier number in the 3 RFID tags are equal, and when the construction consumables leave the spot, 3 of the total number is written into each tag of the 3 RFID tags of the lot of construction consumables.
S2, the tag reader-writer sends the data in the RFID tag on the read building consumable to a first Bluetooth terminal which is arranged in the same point virtual area with the tag reader-writer;
s3, the first Bluetooth terminal stores data in the RFID tag on the construction consumable sent by the tag reader-writer and analyzes the data to obtain a data analysis result;
When the construction site patrol car enters the current point location virtual area, the first Bluetooth terminal sends data in all RFID tags stored by the first Bluetooth terminal to the construction site patrol car;
the construction site patrol car patrol all the points according to the patrol path and collects a plurality of RFID tag data in a first Bluetooth terminal in all the points;
further, a second Bluetooth terminal is installed on the site patrol car, and when the site patrol car enters the point virtual area, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the point virtual area.
S4, dynamically adjusting a patrol path by the construction site patrol car according to abnormal conditions of the building consumables in each point virtual area;
S5, the construction site patrol car transmits the collected data in the first Bluetooth terminal of each point virtual area to a material tracking platform, and the material tracking platform dynamically displays the construction consumable data in real time.
[ Example two ]
On the basis of the first step S1 to the second step S5, the first bluetooth terminal in the second step S3 stores the data in the RFID tag on the construction consumable sent by the tag reader-writer and performs data analysis, so as to obtain a data analysis result, and specifically further includes the following steps:
s31, the first Bluetooth terminal stores data in RFID tags on the construction consumables sent by the tag reader-writer, and obtains transfer path information of each RFID tag;
The transfer path information of the RFID tag is a set of point position numbers of all the point positions which are passed from the RFID tag entering the construction site to the current point position reached by the RFID tag according to the passing sequence of time;
For example, the positions of the RFID tag A from entering the construction site to reaching the current position are respectively a position No. 3, a position No.1 and a position No. 6 according to the time sequence, and the transfer path information of the RFID tag is 3-1-6;
S32, the first Bluetooth terminal acquires a label transfer path table stored in the local of the first Bluetooth terminal, compares the RFID label transfer path stored in the label transfer path table with the RFID label transfer path acquired in the step S31, if the RFID label transfer paths are consistent, executes the steps S34 to S36, if the RFID label transfer paths are inconsistent, executes the step S33;
Further, the tag transfer path table is pre-stored in a first Bluetooth terminal of each point location and synchronously stored in a construction patrol car;
the label transfer path table stores the transfer path of each RFID label, the stay time at each point, the transfer time between each point and the number of the belonging batch of building consumables at each point.
S33, the first Bluetooth terminal judges that the batch of building consumables corresponding to the RFID tag are abnormal consumables, controls an alarm connected with the first Bluetooth terminal to alarm, and after receiving alarm information, the building site inspection personnel go to a point location virtual area where the first Bluetooth terminal is positioned to perform site check on the batch of building consumables;
If the checking is free of abnormality, the site inspection personnel modifies the data content in the RFID tag and the data content in the first Bluetooth terminal according to the correct RFID tag information so as to eliminate the abnormality information;
If the checking is abnormal, the construction site inspection personnel pauses the use of the construction consumable corresponding to the RFID tag.
S34, when RFID tags of the batch of building consumables leave the point location, the first Bluetooth terminal gathers the total number of the RFID tags with the same building consumable numbers and the same supplier numbers, and the total number is used as the number of the RFID tags of the batch of building consumables entering the virtual area of the current point location;
s35, the first Bluetooth terminal calculates the stay time of each RFID tag at each point location and the transfer time between the point locations according to each RFID tag;
Further, the residence time of the RFID tag at the point location=the time when the RFID tag leaves the point location-the time when the RFID tag enters the point location;
Further, the transfer time of the RFID tag between the points=the time when the RFID tag enters the point A-the time when the RFID tag leaves the point B, wherein the RFID tag leaves the point B and enters the point A;
s36, the first Bluetooth terminal performs data analysis according to the number of RFID tags entering the virtual area of the current point location, the stay time of the RFID tags at the point location, the transfer time of the RFID tags among the point locations and various loss parameters, and a data analysis result is obtained, wherein the calculation formula of the data analysis is as follows:
The lambda n、λt、λz is a first weight, a second weight and a third weight respectively, wherein lambda n>λt>λz;Nhi、Nqi is the number of RFID tags in the batch of building consumables to which the RFID tags belong when the RFID tags correspond to the ith serial number in the transfer path and the due number of RFID tags in the batch of building consumables to which the RFID tags belong when the RFID tags stored in the tag transfer path table correspond to the ith serial number in the transfer path respectively; T hi、Tqi is the stay time of the point corresponding to the ith serial number of the RFID label in the transfer path, the stay time of the point corresponding to the ith serial number of the RFID label in the transfer path in the label transfer path table, Z hi、Zqi is the transfer time of the point corresponding to the ith serial number of the RFID label in the transfer path to the point corresponding to the ith serial number of the transfer path, the stay time of the point corresponding to the ith serial number of the RFID label in the transfer path in the label transfer path table, W is the analysis result value, d is the number of the current point, S ni、Sti、Szi is the loss parameter of the number of the RFID labels in the batch of construction consumables to which the RFID label belongs when the point corresponding to the ith serial number of the RFID label in the transfer path, the loss parameter of the stay time of the point corresponding to the ith serial number of the RFID label in the transfer path, and the loss parameter of the point corresponding to the ith serial number of the RFID label in the transfer path.
The loss parameters are the maximum error parameters allowed by the quantity, the stay time and the transfer time caused by transportation damage or other factors;
For example, if the number of RFID tags at a certain point is 5, and the number of tags in the tag transfer path table is 6, and the loss parameter is 2, then |5-6|=1, 1 is within the range of loss parameter 2.
I=1 to d in the above formula represent the i-th sequence number in the transfer path of the RFID tag.
For example, the actual transfer path of the RFID tag is 2-1-6, so d=3 in the formula, that is, the transfer path representing the RFID tag includes 3 dot nodes. The first serial number in the transfer path of the RFID tag corresponds to the point location 2, the second serial number in the transfer path corresponds to the point location 1, and the third serial number in the transfer path corresponds to the point location 6. In the formula, when i=1, T hi represents the residence time of the RFID tag at the point corresponding to the first serial number in the transfer path (i.e., point 2), that is, the residence time of the RFID tag at point 2.
The label transfer path table prestores the due number of the building consumables in each point, the stay time of each RFID label in each point, and the transfer time of each RFID label from one point to the next point.
When W > R, the first Bluetooth terminal judges that the building consumable corresponding to the RFID tag is the consumable of major concern, controls an alarm connected with the first Bluetooth terminal to alarm, and after receiving alarm information, the building site patrol personnel go to the point location virtual area where the first Bluetooth terminal is positioned to carry out site check on the building consumable, and sends RFID tag information corresponding to the consumable of major concern to the building site patrol car by the building site patrol personnel;
The RFID tag information comprises batch building consumable information corresponding to the RFID tag, a point position number of the RFID tag when the RFID tag leaves, and time of the RFID tag when the RFID tag leaves the current point position.
When W < R, the first Bluetooth terminal does not perform alarm operation.
Further, in the step S3, the first bluetooth terminal stores the data in the RFID tag on the construction consumable sent by the tag reader-writer and performs data analysis, so as to obtain a data analysis result, and specifically further includes the following steps:
The method comprises the steps that a first Bluetooth terminal obtains the time T 1 when each RFID tag stored in a tag transfer path table of the first Bluetooth terminal reaches a current point location virtual area;
When the current moment T d>T1+Ty is reached, the first Bluetooth terminal judges that the building consumable corresponding to the RFID tag is abnormal consumable, controls an alarm connected with the first Bluetooth terminal to alarm, and after receiving alarm information, a building site inspection person goes to a point location virtual area where the first Bluetooth terminal is located to perform site check on the building consumable;
T d is the current time, and T y is a preset threshold;
The T y is set according to the actual scene, for example, 10min to 30min.
If the checking is free of abnormality, the site inspection personnel modifies the data content in the RFID tag and the data content in the first Bluetooth terminal according to the correct RFID tag information so as to eliminate the abnormality information;
If the checking is abnormal, the construction site inspection personnel pauses the use of the construction consumable corresponding to the RFID tag.
[ Example III ]
On the basis of the second embodiment, the step S4 of dynamically adjusting the patrol path by the construction patrol car according to the abnormal condition of the construction consumables in the virtual area of each point, and specifically further comprises the following steps:
s41, when the construction site patrol car receives RFID tag information corresponding to the important attention consumable materials sent by the construction site patrol personnel, the construction site patrol car acquires the time length for ending the current residual patrol work according to the current patrol path.
S42, calculating the point position number reached by the RFID label corresponding to the building consumable material by the construction patrol car when the time length of the current residual patrol work is finished;
Further, the construction patrol car judges the point number reached by the RFID tag corresponding to the construction consumable when the construction patrol car finishes the market of the current residual patrol work according to the time of the current residual patrol work, the time of leaving the current point by the RFID tag in the RFID tag information received from the construction patrol personnel, the time of transferring the RFID tag to the subsequent point in a tag transfer path table in the construction patrol car and the stay time of the subsequent point.
For example, the time when the RFID leaves the current point is 10:00 am, the duration of the current residual patrol operation of the construction patrol car is 30min, the next point of the RFID tag is K, the next point of the next point K is L, the transfer duration of the RFID tag from the current point to the next point K is 5min, the stay duration of the next point K is 10min, the transfer duration of the RFID tag from the next point K to the point L is 10min, and the stay duration of the RFID tag from the next point K to the point L is 30min. Therefore, when the current time length of the remaining patrol work of the construction site patrol car is over, namely 10:30 time, the point position number of the RFID tag is L.
S43, when the construction site patrol car completes the current patrol path, taking the point position number obtained in the step S42 as a first patrol point position of the next patrol path, and carrying out path planning on the rest point positions again according to the distance from the first patrol point to form an adjusted patrol path;
When the construction patrol car completes the current patrol path, the construction patrol car takes the point number closest to the last point of the construction patrol car completing the current patrol path of the plurality of point numbers obtained in the step S42 as the first patrol point position of the next patrol path, carries out path planning again according to the distance between the RFID tag corresponding to the rest of the construction consumable of focus attention and the first patrol point, and carries out path planning on the point numbers which do not participate in the path planning according to the distance between the last point of the planned path after the path planning is completed.
[ Example IV ]
On the basis of the third embodiment, when the site patrol car enters the current point location virtual area in the step S3, the first bluetooth terminal sends the data in all the RFID tags stored in the first bluetooth terminal to the site patrol car, and specifically further includes the following steps:
SA, the first Bluetooth terminal obtains the times of the construction site patrol car entering the virtual area of the current point location, multiplies the times by the MAC address of the first Bluetooth terminal to form an encryption key, and encrypts data in all RFID tags stored in the first Bluetooth terminal;
Further, when the construction site patrol car enters a point location virtual area where the first Bluetooth terminal is located, the number of times corresponding to the first Bluetooth terminal in the point location data table is added by 1 in the point location data table stored in the construction site patrol car, wherein the number of times of the first Bluetooth terminal entering the construction site patrol car stored in the construction site patrol car is added by 1;
the point location data table stored in the construction site patrol car comprises first Bluetooth terminals, access times corresponding to the first Bluetooth terminals and MAC addresses.
SB. the first Bluetooth terminal transmits the data in the encrypted RFID tag to the construction site patrol car in a Bluetooth communication mode;
SC. the site patrol car acquires the times and the MAC address corresponding to the first Bluetooth terminal of the current point from the point data table stored in the site patrol car, multiplies the MAC address and the times to obtain a first decryption key, and decrypts the received data.
[ Example five ]
On the basis of the fourth embodiment, the step S5 is that the site patrol car transmits the collected data in the first bluetooth terminal of each site virtual area to the material tracking platform, and the material tracking platform dynamically displays the building consumable data in real time, and specifically includes:
and displaying the virtual area of each point position according to the range of the virtual area of each point position on the material tracking platform, and dynamically displaying the information of the building consumable in the virtual area of each point position.
[ Example six ]
The invention further provides a construction site material tracking system based on the combination of Bluetooth and RFID technologies, and the system specifically comprises an RFID tag, a tag reader-writer, a first Bluetooth terminal, a construction site patrol car and a second Bluetooth terminal;
The system divides the construction site into a plurality of point location virtual areas;
Each point location virtual area is set to comprise a tag reader-writer and a first Bluetooth terminal, and the tag reader-writer is in communication connection with the first Bluetooth terminal;
installing RFID tags on the building consumables;
the construction site patrol car carries out patrol on the virtual areas of all the points according to the patrol path, the second Bluetooth terminal is arranged on the construction site patrol car, and when the construction site patrol car enters the virtual areas of the points, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the virtual areas of the points.
Specifically, the system performs the steps of:
s1, when building consumables enter a current point virtual area, reading RFID tags on the building consumables by a tag reader-writer in the current point virtual area, and writing the position and the entering time of the current point into the RFID tags;
When the building consumable leaves the current point location virtual area, reading an RFID tag on the building consumable by a tag reader-writer in the current point location virtual area, and writing the leaving time into the RFID tag;
The number of the RFID tags on the building consumable is one or more, and the RFID tag is specifically determined by the type of the consumable.
Further, dividing the building site into a plurality of points according to the areas, wherein each point is an area, namely a point virtual area;
For example, the whole space of the construction site is divided into four points A, B, C and D according to the regions, each point corresponds to one region, namely a point virtual region, and the four regions form the whole space of the construction site.
Further, a tag reader-writer and a first Bluetooth terminal are arranged in each point location virtual area;
The tag reader-writer can read data in the RFID tag on the building consumable, and is connected with the first Bluetooth terminal;
further, the tag reader-writer reads the content of the data in the RFID tag on the construction consumable, wherein the content comprises the construction consumable number, the construction consumable name, the supplier number, the supplier name and the transfer path;
when a plurality of RFID tags are arranged in the batch of building consumables, the batch of building consumables corresponds to the plurality of data.
The transfer path is the time when the construction consumable enters and leaves each point virtual area, and the specific data format is { point location 1, entry time, exit time ], [ point location 2, entry time, exit time ],.[ point location i, entry time, exit time ] };
for example, when a construction consumable enters a point i+1, the number and the entry time of the point i+1 are written into a transfer path in an RFID tag, such as { [ point 1, entry time, exit time ], [ point 2, entry time, exit time ],.[ point i, entry time, exit time ], [ point i+1, entry time ] };
when the construction consumable leaves the point i+1, the time leaving the point i+1 is written into a transfer path in the RFID tag, such as { [ point 1, entering time, leaving time ], [ point 2, entering time, leaving time ],.[ point i, entering time, leaving time ], [ point i+1, entering time, leaving time ] }.
When the building consumables leave the point i+1, counting the number of the building consumables to be equal, taking the number of RFID tags with the same supplier number as the total number of the batch of the building consumables, and writing the total number into each RFID tag belonging to the same batch of the building consumables;
for example, for a lot of construction consumables, which contains 3 RFID tags, the construction consumables number and the supplier number in the 3 RFID tags are equal, and when the construction consumables leave the spot, 3 of the total number is written into each tag of the 3 RFID tags of the lot of construction consumables.
S2, the tag reader-writer sends the data in the RFID tag on the read building consumable to a first Bluetooth terminal which is arranged in the same point virtual area with the tag reader-writer;
s3, the first Bluetooth terminal stores data in the RFID tag on the construction consumable sent by the tag reader-writer and analyzes the data to obtain a data analysis result;
When the construction site patrol car enters the current point location virtual area, the first Bluetooth terminal sends data in all RFID tags stored by the first Bluetooth terminal to the construction site patrol car;
the construction site patrol car patrol all the points according to the patrol path and collects a plurality of RFID tag data in a first Bluetooth terminal in all the points;
further, a second Bluetooth terminal is installed on the site patrol car, and when the site patrol car enters the point virtual area, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the point virtual area.
S4, dynamically adjusting a patrol path by the construction site patrol car according to abnormal conditions of the building consumables in each point virtual area;
S5, the construction site patrol car transmits the collected data in the first Bluetooth terminal of each point virtual area to a material tracking platform, and the material tracking platform dynamically displays the construction consumable data in real time.
The beneficial effects of the invention are as follows:
1. According to the invention, a mode of combining RFID and Bluetooth technology is adopted to dynamically track batch building consumables, wherein RFID communication can enable information to be read when RFID tags are positioned in the building consumables, and Bluetooth technology can effectively avoid the problems of unstable or interference of various communication caused by complex environments or poor network signals in a building site by other communication technologies such as wifi and the like.
2. According to the method, whether the building consumable is abnormal consumable or not is judged according to the transfer paths of the RFID tags, the number of batches of building consumable at each point, the stay time of the RFID tags at each point and the transfer time of the RFID tags among each point, or the consumable is focused, and the building consumable is processed by adopting different processing modes, so that the accuracy of tracking, judging and processing the consumable is improved, and the overall operation efficiency of a construction site is improved.
3. According to the method, firstly, whether the batch of building consumables are abnormal or not is judged according to the transfer path of the RFID tags, and then the building consumables are judged according to the number of the RFID tags, the stay time and the transfer time, so that the judging efficiency of the building consumables is effectively improved;
4. according to whether the construction consumables pay attention to the dynamically adjusted patrol path of the construction patrol car, the construction consumables which possibly risk are subjected to quick and important patrol, so that the accuracy of tracking the construction consumables is improved;
5. The method adopts the product of the times that the site patrol car enters the site virtual area and the MAC address of the first Bluetooth terminal of the site as the first key to encrypt the data, and because the patrol path of the site patrol car is dynamically changed, the times that the site patrol car enters the site virtual area is not easy to be acquired by external personnel, therefore, the encryption mode avoids the possibility that the external personnel falsify the data of the first Bluetooth terminal and send the data to the site patrol car, thereby reducing the possibility that the external personnel illegally acts on the construction consumables.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (5)

1.一种基于蓝牙和RFID技术相结合的建筑工地物资追踪方法，其特征在于，所述方法具体包括如下步骤：1. A construction site material tracking method based on the combination of Bluetooth and RFID technology, characterized in that the method specifically comprises the following steps: S1.当建筑耗材进入当前点位虚拟区域时，由当前点位虚拟区域内的标签读写器读取建筑耗材上的RFID标签，并将当前点位的位置和进入时间写入至所述RFID标签；S1. When the construction consumables enter the current virtual area, the tag reader within the current virtual area reads the RFID tag on the construction consumables and writes the current location and entry time to the RFID tag; 当建筑耗材离开当前点位虚拟区域时，由当前点位虚拟区域内的标签读写器读取建筑耗材上的RFID标签，并将离开时间写入至所述RFID标签中；When the construction consumables leave the current virtual area, the tag reader in the current virtual area reads the RFID tag on the construction consumables and writes the departure time into the RFID tag; S2.标签读写器将读取的建筑耗材上的RFID标签中的数据发送至与所述标签读写器安装在同一点位虚拟区域中的第一蓝牙终端；S2. The tag reader reads the data on the RFID tag of the construction supplies and sends it to the first Bluetooth terminal installed in the same virtual area as the tag reader; S3.第一蓝牙终端保存所述标签读写器发送的建筑耗材上的RFID标签中的数据并进行数据分析，获得数据分析结果；S3. The first Bluetooth terminal saves the data in the RFID tag on the construction consumables sent by the tag reader and performs data analysis to obtain data analysis results; 当工地巡逻车进入当前点位虚拟区域中时，第一蓝牙终端将其存储的所有RFID标签中的数据发送给工地巡逻车；When the construction site patrol car enters the virtual area of the current point, the first Bluetooth terminal sends the data in all RFID tags stored in it to the construction site patrol car; 所述工地巡逻车按照巡逻路径对各点位进行巡逻，并收集各点位中的第一蓝牙终端中的多个RFID标签数据；The construction site patrol car patrols each point along the patrol route and collects multiple RFID tag data from the first Bluetooth terminal at each point; S4.工地巡逻车根据各点位虚拟区域中的建筑耗材的异常情况，动态调整巡逻路径；S4. The construction site patrol car dynamically adjusts its patrol route based on abnormal conditions of construction consumables in each virtual area. S5.工地巡逻车将收集的各点位虚拟区域的第一蓝牙终端中的数据传输至物资追踪平台中，所述物资追踪平台动态实时显示建筑耗材数据；S5. The patrol car transmits the data collected from the first Bluetooth terminal in each virtual area to the material tracking platform, which dynamically displays the construction material data in real time. 其中，步骤S3具体包括如下步骤：Wherein, step S3 specifically includes the following steps: S31.第一蓝牙终端保存所述标签读写器发送的建筑耗材上的RFID标签中的数据，并获得各RFID标签的转移路径信息；S31. The first Bluetooth terminal saves the data in the RFID tag on the construction consumables sent by the tag reader and obtains the transfer path information of each RFID tag; 所述RFID标签的转移路径信息为从RFID标签进入工地至该RFID标签到达当前点位所经过的所有点位的点位编号按照经过先后时间顺序的集合；The transfer path information of the RFID tag is a collection of the point numbers of all the points passed by the RFID tag from the time the RFID tag entered the construction site to the time the RFID tag arrived at the current point, in chronological order; S32.第一蓝牙终端获取存储于第一蓝牙终端本地的标签转移路径表，根据标签转移路径表中存储的RFID标签转移路径与步骤S31中获取的RFID标签的转移路径进行比较，如一致，则执行步骤S34至步骤S36，如不一致，则执行步骤S33；S32. The first Bluetooth terminal obtains the tag transfer path table stored locally in the first Bluetooth terminal, and compares the RFID tag transfer path stored in the tag transfer path table with the transfer path of the RFID tag obtained in step S31. If they are consistent, steps S34 to S36 are executed. If they are inconsistent, step S33 is executed. S33.第一蓝牙终端判断该RFID标签所对应的批次建筑耗材为异常耗材，控制与第一蓝牙终端连接的报警器进行报警，工地巡检人员接收到报警信息后，前往第一蓝牙终端所在的点位虚拟区域对该批次建筑耗材进行现场核对；S33. The first Bluetooth terminal determines that the batch of construction consumables corresponding to the RFID tag is abnormal, controls the alarm connected to the first Bluetooth terminal to sound an alarm, and upon receiving the alarm, the construction site inspection personnel proceed to the virtual area where the first Bluetooth terminal is located to conduct on-site verification of the batch of construction consumables. 如经核对无异常，工地巡检人员根据正确的RFID标签信息修改RFID标签中的数据内容，以及第一蓝牙终端内的数据内容，以消除异常信息；If there is no abnormality after verification, the site inspection personnel modify the data content in the RFID tag and the data content in the first Bluetooth terminal according to the correct RFID tag information to eliminate the abnormal information; 如经核对发生异常，工地巡检人员暂停该RFID标签所对应的建筑耗材的使用；If any abnormality is found after verification, the site inspection personnel will suspend the use of the construction consumables corresponding to the RFID tag; S34.在批次建筑耗材的RFID标签离开点位时，第一蓝牙终端汇总建筑耗材编号相等且供应商编号相等的RFID标签的总数，作为批次建筑耗材进入当前点位虚拟区域的RFID标签的数量；S34. When the RFID tags of the batch of construction consumables leave the point, the first Bluetooth terminal summarizes the total number of RFID tags with the same construction consumable number and the same supplier number as the number of RFID tags of the batch of construction consumables entering the current point virtual area; S35.第一蓝牙终端根据各RFID标签计算各RFID标签在各点位的停留时长，以及点位间的转移时长；S35. The first Bluetooth terminal calculates the length of stay of each RFID tag at each point, and the transfer duration between points, based on each RFID tag; S36.第一蓝牙终端根据批次建筑耗材进入当前点位虚拟区域的RFID标签的数量、RFID标签在点位的停留时长、RFID标签在点位间的转移时长、各项损耗参数进行数据分析，获得数据分析结果；S36. The first Bluetooth terminal performs data analysis based on the number of RFID tags of batches of construction consumables entering the virtual area of the current location, the length of time the RFID tags stay at the location, the length of time the RFID tags are transferred between locations, and various loss parameters to obtain data analysis results; 其中，步骤S36中，所述数据分析的计算公式如下：Wherein, in step S36, the calculation formula of the data analysis is as follows: 其中，所述λn、λt、λz分别为第一权重、第二权重、第三权重，其中，λn>λt>λz；Nhi、Nqi分别为RFID标签在转移路径中的第i个序号所对应点位时该RFID标签所属的批次建筑耗材中RFID标签的数量、在标签转移路径表中存储的RFID标签在转移路径中的第i个序号所对应点位时该RFID标签所属的批次建筑耗材中RFID的应有数量；Thi、Tqi分别为RFID标签在转移路径中的第i个序号所对应点位的停留时长、在标签转移路径表中RFID标签在转移路径中的第i个序号所对应点位的应该停留时长；Zhi、Zqi分别为RFID标签在转移路径中的第i-1个序号所对应点位转移到转移路径中的第i个序号所对应点位的转移时长、在标签转移路径表中RFID标签在转移路径中的第i-1个序号所对应点位转移到转移路径中的第i个序号所对应点位的应该转移时长；W为分析结果数值；d为当前点位的编号；Sni、Sti、Szi分别为RFID标签在转移路径中的第i个序号所对应点位时该RFID标签所属的批次建筑耗材中RFID标签的数量的损耗参数、RFID标签在转移路径中的第i个序号所对应点位的停留时长的损耗参数、RFID标签在标签转移路径中的第i-1个序号所对应点位转移到转移路径中的第i个序号所对应点位的转移时长的损耗参数；Among them, the λn , λt , and λz are respectively the first weight, the second weight, and the third weight, among which λn > λt >λz; Nhi and Nqi are respectively the number of RFID tags in the batch of construction consumables to which the RFID tag belongs when the RFID tag is at the point corresponding to the i-th serial number in the transfer path, and the expected number of RFID tags in the batch of construction consumables to which the RFID tag belongs when the RFID tag is at the point corresponding to the i-th serial number in the transfer path stored in the tag transfer path table; Thi and Tqi are respectively the length of time the RFID tag stays at the point corresponding to the i-th serial number in the transfer path, and the expected length of time the RFID tag stays at the point corresponding to the i-th serial number in the transfer path in the tag transfer path table; Zhi and Zqi are respectively qi is the transfer time of the RFID tag from the point corresponding to the i-1th serial number in the transfer path to the point corresponding to the i-th serial number in the transfer path, and the required transfer time of the RFID tag from the point corresponding to the i-1th serial number in the transfer path to the point corresponding to the i-th serial number in the transfer path in the tag transfer path table; W is the analysis result value; d is the number of the current point; S ni , S ti , and S zi are respectively the loss parameters of the number of RFID tags in the batch of building consumables to which the RFID tag belongs when the RFID tag is at the point corresponding to the i-th serial number in the transfer path, the loss parameters of the stay time of the RFID tag at the point corresponding to the i-th serial number in the transfer path, and the loss parameters of the transfer time of the RFID tag from the point corresponding to the i-1th serial number in the tag transfer path to the point corresponding to the i-th serial number in the transfer path; 所述标签转移路径表中预存储各批次建筑耗材在各点位的应有数量，各RFID标签在各点位的应该停留时长，各RFID标签从一个点位转移至下一个点位的应该转移时长；The tag transfer path table pre-stores the required quantity of each batch of construction consumables at each location, the required length of time each RFID tag should stay at each location, and the required length of time each RFID tag should transfer from one location to the next. 其中，步骤S3中当工地巡逻车进入当前点位虚拟区域中时，第一蓝牙终端将其存储的所有RFID标签中的数据发送给工地巡逻车，具体还包括如下步骤：Among them, in step S3, when the construction site patrol car enters the current point virtual area, the first Bluetooth terminal sends the data in all RFID tags stored in it to the construction site patrol car, which specifically includes the following steps: SA.第一蓝牙终端获取工地巡逻车进入当前点位的虚拟区域的次数，并将所述次数乘以第一蓝牙终端的MAC地址，形成加密密钥，对第一蓝牙终端存储的所有RFID标签中的数据进行加密；SA first Bluetooth terminal obtains the number of times the site patrol car enters the current point of the virtual area, and multiplies the number by the MAC address of the first Bluetooth terminal to form an encryption key, the data stored in all RFID tags of the first Bluetooth terminal is encrypted; 其中，工地巡逻车进入至第一蓝牙终端所在的点位虚拟区域时，工地巡逻车在其内部存储的点位数据表中，将点位数据表中的第一蓝牙终端对应的次数加1；所述第一蓝牙终端在其内部存储的工地巡逻车进入次数加1；When the construction site patrol car enters the virtual area of the point where the first Bluetooth terminal is located, the construction site patrol car increases the number of times corresponding to the first Bluetooth terminal in the point data table stored internally by 1; the first Bluetooth terminal increases the number of times the construction site patrol car enters stored internally by 1; 所述工地巡逻车内部存储的点位数据表包括各第一蓝牙终端及对第一蓝牙终端所对应的访问次数、MAC地址；The point data table stored in the construction site patrol car includes each first Bluetooth terminal and the number of visits and MAC addresses corresponding to the first Bluetooth terminal; SB.第一蓝牙终端将加密后的RFID标签中的数据采用蓝牙通信方式传输给工地巡逻车；SB. The first Bluetooth terminal transmits the encrypted data in the RFID tag to the construction site patrol car using Bluetooth communication; SC.工地巡逻车从其内部存储的点位数据表中获取当前点位的第一蓝牙终端所对应的次数和MAC地址，并将MAC地址和次数相乘，获得第一解密密钥，对接收的数据进行解密。SC. The construction site patrol car obtains the number and MAC address corresponding to the first Bluetooth terminal at the current point from the point data table stored internally, multiplies the MAC address and the number to obtain the first decryption key, and decrypts the received data. 2.根据权利要求1所述的一种基于蓝牙和RFID技术相结合的建筑工地物资追踪方法，步骤S1还包括：2. According to the method for tracking construction site materials based on the combination of Bluetooth and RFID technology as claimed in claim 1, step S1 further comprises: 每个点位虚拟区域中均安装有一个标签读写器，一个第一蓝牙终端。A tag reader and a first Bluetooth terminal are installed in each point virtual area. 3.根据权利要求1所述的一种基于蓝牙和RFID技术相结合的建筑工地物资追踪方法，所述步骤S1还包括：3. The method for tracking construction site materials based on the combination of Bluetooth and RFID technology according to claim 1, wherein step S1 further comprises: 标签读写器能够读取建筑耗材上的RFID标签中的数据，所述标签读写器与第一蓝牙终端连接；The tag reader is capable of reading data in the RFID tag on the construction consumable material, and the tag reader is connected to the first Bluetooth terminal; 所述标签读写器读取建筑耗材上的RFID标签中的数据的内容包括：建筑耗材编号、建筑耗材名称、供应商编号、供应商名称、转移路径；The tag reader reads the data in the RFID tag on the building consumables, including: building consumables number, building consumables name, supplier number, supplier name, and transfer path; 所述转移路径包括该建筑耗材进入和离开各点位虚拟区域的时间。The transfer path includes the time when the construction consumables enter and leave the virtual area of each point. 4.根据权利要求3所述的一种基于蓝牙和RFID技术相结合的建筑工地物资追踪方法，其特征在于，步骤S36还包括：4. The method for tracking construction site materials based on the combination of Bluetooth and RFID technology according to claim 3, wherein step S36 further comprises: 当W>R时，第一蓝牙终端判断该RFID标签所对应的建筑耗材为重点关注耗材，控制与第一蓝牙终端连接的报警器进行报警，工地巡检人员接收到报警信息后，前往第一蓝牙终端所在的点位虚拟区域对建筑耗材进行现场核对，并由工地巡检人员向工地巡逻车发送重点关注耗材所对应的RFID标签信息；When W>R, the first Bluetooth terminal determines that the construction consumables corresponding to the RFID tag are consumables of special concern, and controls the alarm connected to the first Bluetooth terminal to sound an alarm. After receiving the alarm information, the construction site inspection personnel go to the virtual area where the first Bluetooth terminal is located to conduct on-site verification of the construction consumables, and the construction site inspection personnel send the RFID tag information corresponding to the consumables of special concern to the construction site patrol car; 所述RFID标签信息包括：该RFID标签所对应的批次建筑耗材信息、该RFID标签当前离开的点位编号、该RFID标签离开当前点位的时间；The RFID tag information includes: the batch construction consumables information corresponding to the RFID tag, the location number of the RFID tag currently leaving, and the time when the RFID tag left the current location; 当W<R时，第一蓝牙终端不进行报警操作。When W<R, the first Bluetooth terminal does not perform an alarm operation. 5.根据权利要求4所述的一种基于蓝牙和RFID技术相结合的建筑工地物资追踪方法，其特征在于，步骤S3还包括：5. The method for tracking construction site materials based on the combination of Bluetooth and RFID technology according to claim 4, wherein step S3 further comprises: 第一蓝牙终端获取存储于第一蓝牙终端的标签转移路径表中的各RFID标签到达当前点位虚拟区域的时刻T1；The first Bluetooth terminal obtains the time T 1 at which each RFID tag in the tag transfer path table stored in the first Bluetooth terminal arrives at the current point virtual area; 当当前时刻Td>T1+Ty时，第一蓝牙终端判断该RFID标签所对应的建筑耗材为异常耗材，控制与第一蓝牙终端连接的报警器进行报警，工地巡检人员接收到报警信息后，前往第一蓝牙终端所在的点位虚拟区域对建筑耗材进行现场核对；When the current time T d >T 1 +T y , the first Bluetooth terminal determines that the construction consumable corresponding to the RFID tag is an abnormal consumable, and controls the alarm connected to the first Bluetooth terminal to sound an alarm. After receiving the alarm information, the construction site inspection personnel go to the virtual area where the first Bluetooth terminal is located to conduct on-site verification of the construction consumables; 所述Td为当前时刻，Ty为预设阈值；The Td is the current moment, and Ty is the preset threshold; 如经核对无异常，工地巡检人员根据正确的RFID标签信息修改RFID标签中的数据内容，以及第一蓝牙终端内的数据内容，以消除异常信息；If there is no abnormality after verification, the site inspection personnel modify the data content in the RFID tag and the data content in the first Bluetooth terminal according to the correct RFID tag information to eliminate the abnormal information; 如经核对发生异常，工地巡检人员暂停该RFID标签所对应的建筑耗材的使用。If any abnormality is found after verification, the site inspection personnel will suspend the use of the construction consumables corresponding to the RFID tag.
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