Construction site materials tracking method and system based on combination of bluetooth and RFID technologies

Abstract

A construction site materials tracking method and system based on a combination of Bluetooth and RFID technologies. Information collection and transmission of construction site materials consumables are realized by means of using the combination of Bluetooth and RFID technologies, and abnormal conditions of construction materials are determined on the basis of transfer paths of materials, a residence duration at each location, and a transfer duration; moreover, a construction site patrol vehicle dynamically adjusts an inspection path, and the construction site patrol vehicle communicates with a first Bluetooth terminal at each location by means of using a dynamic encryption technique, thereby improving the accuracy of tracing construction site materials and also improving the efficiency of managing the construction site materials.

Description

A construction site material tracking method and system based on combination of Bluetooth and RFID technologies TECHNICAL FIELD

[0001] The present application relates to the technical field of material tracking, in particular to a construction site material tracking method and system based on combination of Bluetooth and RFID technologies. BACKGROUND

[0002] At present, due to the large number of personnel, the complex environment caused by the operation of construction equipment, the unclear division of each region, and the large variety of building consumables required for construction, the management of building materials in the construction site is not perfect, and lacks fine management, resulting in waste and loss of many building materials, and the building cost cannot be effectively controlled.

[0003] In the current management method of building materials, manual management is mostly used, which not only consumes a lot of manpower and material resources, but also cannot track the material situation when the material is lost or abnormal. At present, with the popularization of new generation information technology in various fields, how to use digital method to manage and trace the materials of construction site has become a problem to be solved.

[0004] Based on the above problems, the present application provides a construction site material tracking method and system based on combination of Bluetooth and RFID technologies.

[0005] SUMMARY

[0006] In view of the current non-standard management of construction site materials and the lack of tracking, the present application provides a construction site material tracking method based on combination of Bluetooth and RFID technologies, which specifically includes the following steps:

[0007] S1. When the building consumable enters the current point position virtual area, the label reader-writer in the current point position virtual area reads the RFID tag on the building consumable, and writes the position and entering time of the current point position into the RFID tag;

[0008] When the building consumable leaves the current point position virtual area, the label reader-writer in the current point position virtual area reads the RFID tag on the building consumable, and writes the leaving time into the RFID tag;

[0009] Further, the RFID tags on a batch of building consumables are one or more, which is determined by the type of consumable.

[0010] Further, the construction site is divided into a plurality of point positions according to regions, and each point position is a region, i.e. a point position virtual area;

[0011] For example, the overall space of the construction site is divided into four points A, B, C, and D according to regions, each point corresponding to a region, i.e., a point virtual region, and the above four regions form the overall space of the construction site.

[0012] Further, each point virtual region is installed with a tag reader / writer and a first Bluetooth terminal.

[0013] The tag reader / writer can read data in the RFID tag on the construction consumable, and the tag reader / writer is connected with the first Bluetooth terminal.

[0014] Further, the content of the data read by the tag reader / writer from the RFID tag on the construction consumable includes construction consumable number, construction consumable name, supplier number, supplier name, and transfer path.

[0015] Each RFID tag corresponds to one piece of the above data; when a batch of construction consumables has multiple RFID tags, the batch of construction consumables corresponds to multiple pieces of the above data.

[0016] The transfer path includes the time when the construction consumable enters and leaves each point virtual region, and the specific data format is {[point 1, entry time, exit time], [point 2, entry time, exit time], … [point i, entry time, exit time]}.

[0017] For example, when the construction consumable enters point i+1, the number and entry time of the point i+1 are written into the transfer path in the 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]}.

[0018] When the construction consumable leaves point i+1, the time of leaving the point i+1 is written into the transfer path in the 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, exit time]}.

[0019] When the construction consumable leaves point i+1, the number of RFID tags with the same construction consumable number and the same supplier number is counted as the total number of the batch of construction consumables, and the total number is written into each RFID tag belonging to the same batch of construction consumables.

[0020] For example, for a batch of building consumables, it contains 3 RFID tags, the building consumable number and the supplier number in the 3 RFID tags are equal, when the building consumables leave the point, the total number of 3 is written into each of the 3 RFID tags of the batch of building consumables.

[0021] S2. The tag reader-writer sends the data in the RFID tag on the building consumable to the first Bluetooth terminal installed in the same point virtual area as the tag reader-writer;

[0022] S3. The first Bluetooth terminal saves the data in the RFID tag on the building consumable sent by the tag reader-writer and performs data analysis to obtain a data analysis result;

[0023] When the construction site patrol vehicle enters the current point virtual area, the first Bluetooth terminal sends all the data in the RFID tags stored by it to the construction site patrol vehicle;

[0024] The construction site patrol vehicle patrols each point according to the patrol path and collects the multiple RFID tag data in the first Bluetooth terminal in each point;

[0025] Further, the construction site patrol vehicle is installed with a second Bluetooth terminal, when the construction site patrol vehicle enters the point virtual area, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the point virtual area.

[0026] S4. The construction site patrol vehicle dynamically adjusts the patrol path according to the abnormal situation of the building consumables in each point virtual area;

[0027] S5. The construction site patrol vehicle transmits the collected data in the first Bluetooth terminal in each point virtual area to the material tracking platform, and the material tracking platform dynamically and real-timely displays the building consumable data.

[0028] The application also proposes a building site material tracking system based on the combination of Bluetooth and RFID technologies, the system specifically comprises an RFID tag, a tag reader-writer, a first Bluetooth terminal, a construction site patrol vehicle, and a second Bluetooth terminal;

[0029] The system divides the construction site into multiple point virtual areas;

[0030] Each point virtual area is provided with a tag reader-writer and a first Bluetooth terminal, and the tag reader-writer is in communication connection with the first Bluetooth terminal;

[0031] An RFID tag is installed on the building consumable;

[0032] The construction site patrol vehicle patrols each point position virtual area according to a patrol path, and the second Bluetooth terminal is installed on the construction site patrol vehicle; when the construction site patrol vehicle enters a point position virtual area, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the point position virtual area.

[0033] Specifically, the system performs the following steps:

[0034] S1. When the construction consumables enter the current point position virtual area, the RFID tag on the construction consumables is read by the tag reader-writer in the current point position virtual area, and the position and entry time of the current point position are written into the RFID tag;

[0035] When the construction consumables leave the current point position virtual area, the RFID tag on the construction consumables is read by the tag reader-writer in the current point position virtual area, and the exit time is written into the RFID tag;

[0036] The RFID tag on the construction consumables is one or more, which is determined by the type of consumables.

[0037] Further, the data content read by the tag reader-writer in the RFID tag on the construction consumables includes: construction consumable number, construction consumable name, supplier number, supplier name, and transfer path.

[0038] S2. The tag reader-writer sends the data in the RFID tag on the construction consumables read by the tag reader-writer to the first Bluetooth terminal installed in the same point position virtual area as the tag reader-writer;

[0039] S3. The first Bluetooth terminal saves the data in the RFID tag on the construction consumables sent by the tag reader-writer and performs data analysis to obtain a data analysis result;

[0040] When the construction site patrol vehicle enters the current point position virtual area, the first Bluetooth terminal sends all the data in the RFID tags stored by the first Bluetooth terminal to the construction site patrol vehicle;

[0041] The construction site patrol vehicle patrols each point position according to a patrol path, and collects the multiple RFID tag data in the first Bluetooth terminal in each point position;

[0042] Further, the second Bluetooth terminal is installed on the construction site patrol vehicle, and when the construction site patrol vehicle enters a point position virtual area, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the point position virtual area.

[0043] S4. The construction site patrol vehicle dynamically adjusts the patrol path according to the abnormal situation of the construction consumables in each point position virtual area;

[0044] S5. The construction site patrol vehicle transmits the data collected in the first Bluetooth terminal of the virtual area of each point to the material tracking platform, and the material tracking platform dynamically and real-timely displays the building material data.

[0045] The beneficial effects of the present application are as follows:

[0046] 1. In the present application, the batch building materials are dynamically tracked by combining RFID and Bluetooth technologies, wherein the RFID communication can enable information reading when the RFID tag is inside the building materials; and the Bluetooth technology can effectively avoid various communication instabilities or interferences caused by complex environment or poor network signal in the construction site.

[0047] 2. According to the transfer path of the RFID tag, the quantity of the batch building materials at each point, the residence duration of the RFID tag at each point, and the transfer duration of the RFID tag between each point, the present application determines whether the building materials are abnormal materials or key attention materials, and processes the building materials by different processing methods, thereby improving the accuracy of tracking, judging and processing the materials and improving the overall operation efficiency of the construction site.

[0048] 3. In the present application, first, whether the batch building materials are abnormal is determined according to the transfer path of the RFID tag, and if no abnormality is found, the building materials are determined according to the quantity, residence duration and transfer duration of the RFID tag, so that the efficiency of determining the condition of the building materials is effectively improved.

[0049] 4. The present application dynamically adjusts the inspection path of the construction site patrol vehicle according to whether the building materials are key attention materials, so that the building materials that may have risks are quickly and key inspected, thereby improving the accuracy of tracking the building materials.

[0050] 5. In the present application, the product of the number of times that the construction site patrol vehicle enters the virtual area of the point and the MAC address of the first Bluetooth terminal of the point is used as the first key to encrypt the data; since the inspection path of the construction site patrol vehicle is dynamically changed, the number of times that the construction site patrol vehicle enters the virtual area of the point is not easy to be obtained by external personnel, so that this encryption method avoids the possibility that the external personnel forge the data of the first Bluetooth terminal and send it to the construction site patrol vehicle, thereby reducing the possibility of illegal behavior of the external personnel on the building materials.

[0051] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, it can be implemented according to the content of the specification, and in order to make the above description and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the preferred embodiments are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0052] 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 with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to limit the present application thereto. Like reference numerals have been used throughout the drawings to denote like parts. In the drawings:

[0053] Fig. 1 is a structural diagram of a construction site material tracking system based on the combination of Bluetooth and RFID technologies;

[0054] Fig. 2 is a flowchart of a construction site material tracking method based on the combination of Bluetooth and RFID technologies. DETAILED DESCRIPTION

[0055] Exemplary embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the present disclosure are shown. This disclosure may, however, be embodied in many different forms and should not be construed as 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 present disclosure to those skilled in the art.

[0056] In the description of the present application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixed", and the like should be understood broadly, for example, can be connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be internal communication of two elements or interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] Embodiment I

[0058] The present application provides a construction site material tracking method based on the combination of Bluetooth and RFID technologies, which specifically comprises the following steps:

[0059] S1. When the construction consumables enter the current point position virtual area, the RFID tag on the construction consumables is read by the tag reader-writer in the current point position virtual area, and the position and entering time of the current point position are written into the RFID tag;

[0060] When the construction consumables leave the current point position virtual area, the RFID tag on the construction consumables is read by the tag reader-writer in the current point position virtual area, and the leaving time is written into the RFID tag;

[0061] Further, the RFID tag on a batch of construction consumables is one or more, which is determined by the type of consumables.

[0062] Further, the construction site is divided into multiple points according to regions, and each point is a region, namely a point virtual region;

[0063] For example, the overall space of the construction site is divided into four points A, B, C, and D according to regions, and each point corresponds to a region, namely a point virtual region, and the above four regions constitute the overall space of the construction site.

[0064] Further, a tag reader and a first Bluetooth terminal are installed in each point virtual region;

[0065] The tag reader can read the data in the RFID tag on the construction consumables, and the tag reader is connected with the first Bluetooth terminal;

[0066] Further, the content of the data read by the tag reader in the RFID tag on the construction consumables includes the construction consumable number, the construction consumable name, the supplier number, the supplier name, and the transfer path;

[0067] Each RFID tag corresponds to one piece of the above data; when a batch of construction consumables has multiple RFID tags, the batch of construction consumables corresponds to multiple pieces of the above data.

[0068] The transfer path is the time when the construction consumables enter and leave each point virtual region, and the specific data format is {[point 1, entry time, exit time], [point 2, entry time, exit time], … [point i, entry time, exit time]};

[0069] For example, when the construction consumables enter point i+1, the number and entry time of the point i+1 are written into the transfer path in the 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]};

[0070] When the construction consumables leave point i+1, the time of leaving the point i+1 is written into the transfer path in the 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, exit time]}.

[0071] When the construction consumables leave point i+1, the number of RFID tags with the same construction consumable number and the same supplier number is counted as the total number of the batch of construction consumables, and the total number is written into each RFID tag belonging to the same batch of construction consumables;

[0072] For example, for a batch of construction materials, it contains 3 RFID tags, then the construction material number, supplier number in the 3 RFID tags are equal, when the construction materials leave the point, the total number of 3 is written into each of the 3 RFID tags of the batch of construction materials.

[0073] S2. The tag reader sends the data in the RFID tag on the construction material to the first Bluetooth terminal installed in the same point virtual area as the tag reader;

[0074] S3. The first Bluetooth terminal saves the data in the RFID tag on the construction material sent by the tag reader and performs data analysis to obtain a data analysis result;

[0075] When the site patrol vehicle enters the current point virtual area, the first Bluetooth terminal sends all the data in the RFID tag stored by it to the site patrol vehicle;

[0076] The site patrol vehicle patrols each point according to the patrol path and collects the multiple RFID tag data in the first Bluetooth terminal in each point;

[0077] Further, the site patrol vehicle is installed with a second Bluetooth terminal, when the site patrol vehicle enters the point virtual area, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the point virtual area.

[0078] S4. The site patrol vehicle dynamically adjusts the patrol path according to the abnormal situation of the construction material in each point virtual area;

[0079] S5. The site patrol vehicle transmits the data collected in the first Bluetooth terminal in each point virtual area to the material tracking platform, and the material tracking platform dynamically and real-timely displays the construction material data.

[0080]

Embodiment Two

[0081] On the basis of steps S1 to S5 in the embodiment, the first Bluetooth terminal in step S3 saves the data in the RFID tag on the construction material sent by the tag reader and performs data analysis to obtain a data analysis result, and specifically further includes the following steps:

[0082] S31. The first Bluetooth terminal saves the data in the RFID tag on the construction material sent by the tag reader and obtains the transfer path information of each RFID tag;

[0083] The transfer path information of the RFID tag is a set of point numbers of all points passed through from the RFID tag entering the site to the RFID tag reaching the current point in chronological order;

[0084] For example, the RFID tag A enters the construction site to the point position of the current point position in the order of time, and the point positions are respectively: No. 3 point position, No. 1 point position, No. 6 point position, and the transfer path information of the RFID tag is 3-1-6;

[0085] S32. The first Bluetooth terminal acquires the label transfer path table stored in the local first Bluetooth terminal, and compares the RFID tag transfer path stored in the label transfer path table with the RFID tag transfer path acquired in step S31. If they are consistent, steps S34 to S36 are executed. If they are inconsistent, step S33 is executed.

[0086] Further, the label transfer path table is pre-stored in the first Bluetooth terminal of each point position and is synchronously stored in the construction site patrol vehicle.

[0087] The label transfer path table stores the transfer path of each RFID tag, the stay duration at each point position, the transfer duration between each point position, and the quantity of the batch building consumables at each point position.

[0088] S33. The first Bluetooth terminal judges that the batch building consumables corresponding to the RFID tag are abnormal consumables, controls the alarm connected with the first Bluetooth terminal to alarm, and the construction site inspection personnel receives the alarm information and goes to the point position virtual area where the first Bluetooth terminal is located to check the batch building consumables on site.

[0089] If no abnormality is found after checking, the construction 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 abnormal information.

[0090] If an abnormality is found after checking, the construction site inspection personnel suspends the use of the building consumables corresponding to the RFID tag.

[0091] S34. When the RFID tag of the batch building consumables leaves the point position, the first Bluetooth terminal sums up the total number of RFID tags with equal building consumable numbers and equal supplier numbers as the quantity of RFID tags of the batch building consumables entering the current point position virtual area.

[0092] S35. The first Bluetooth terminal calculates the stay duration of each RFID tag at each point position and the transfer duration between point positions according to each RFID tag.

[0093] Further, the stay duration of the RFID tag at the point position = the time when the RFID tag leaves the point position - the time when the RFID tag enters the point position.

[0094] Further, the RFID tag transfer time length between the points = RFID tag entering point A time - RFID tag leaving point B time; wherein, RFID tag leaves point B, enters point A;

[0095] S36. The first Bluetooth terminal performs data analysis according to the number of RFID tags of the batch of building consumables entering the current point virtual area, the RFID tag stay time length in the point, the RFID tag transfer time length between the points, and each loss parameter, and obtains a data analysis result, and the calculation formula of the data analysis is as follows:

[0096] Wherein, the λ n , λ t , λ z , respectively, are the first weight, the second weight, and the third weight, wherein λ n > λ t > λ z ; N hi , N qi , respectively, are the number of RFID tags in the batch of building consumables to which the RFID tag belongs at the point corresponding to the i-th serial number in the transfer path and the required number of RFID tags in the batch of building consumables to which the RFID tag belongs at the point corresponding to the i-th serial number in the transfer path stored in the RFID tag transfer path table; T hi , T qi , respectively, are the stay time length of the point corresponding to the i-th serial number in the transfer path of the RFID tag and the required stay time length of the point corresponding to the i-th serial number in the transfer path of the RFID tag in the RFID tag transfer path table; Z hi , Z qi , respectively, are the transfer time length of the point corresponding to the i-1-th serial number in the transfer path of the RFID tag to the point corresponding to the i-th serial number in the transfer path and the required transfer time length of the point corresponding to the i-1-th serial number in the transfer path of the RFID tag to the point corresponding to the i-th serial number in the transfer path in the RFID tag transfer path table; W is the analysis result value; d is the number of the current point; S ni , S ti , S zi , respectively, are the loss parameter of the number of RFID tags in the batch of building consumables to which the RFID tag belongs at the point corresponding to the i-th serial number in the transfer path, the loss parameter of the stay time length of the point corresponding to the i-th serial number in the transfer path of the RFID tag, and the loss parameter of the transfer time length of the point corresponding to the i-1-th serial number in the transfer path of the RFID tag to the point corresponding to the i-th serial number in the transfer path.

[0097] The loss parameter is the maximum error parameter of the number, the staying time length, and the transfer time length caused by transportation damage or other factors;

[0098] For example, the number of RFID tags at a certain point is 5, the number of tags in the tag transfer path table is 6, and the loss parameter is 2. Therefore, |5-6|=1, which is within the range of the loss parameter 2.

[0099] In the above formula, i=1 to d represents the i-th sequence number in the transfer path of the RFID tag.

[0100] 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 of the RFID tag includes three point nodes. The first sequence number in the transfer path of the RFID tag corresponds to point 2, the second sequence number in the transfer path corresponds to point 1, and the third sequence number in the transfer path corresponds to point 6. In the formula, when i=1, T hi represents the staying time length of the RFID tag at the point corresponding to the first sequence number in the transfer path (i.e., point 2), that is, the staying time length of the RFID tag at point 2.

[0101] The tag transfer path table pre-stores the expected number of each batch of construction materials at each point, the expected staying time length of each RFID tag at each point, and the expected transfer time length of each RFID tag from one point to the next point.

[0102] When W>R, the first Bluetooth terminal determines that the construction material corresponding to the RFID tag is a key attention material, controls the alarm connected to the first Bluetooth terminal to alarm, and the site inspection personnel receives the alarm information, goes to the point virtual area where the first Bluetooth terminal is located to check the construction material on site, and sends the RFID tag information corresponding to the key attention material to the site patrol vehicle by the site inspection personnel;

[0103] The RFID tag information includes: the batch construction material information corresponding to the RFID tag, the point number currently left by the RFID tag, and the time when the RFID tag leaves the current point.

[0104] When W<R, the first Bluetooth terminal does not perform the alarm operation.

[0105] Further, the first Bluetooth terminal in step S3 saves the data in the RFID tag on the construction material sent by the tag reader-writer and performs data analysis to obtain a data analysis result, and specifically further includes the following steps:

[0106] The first Bluetooth terminal acquires a time T1 at which each RFID tag reaches a current point virtual area stored in a tag transfer path table of the first Bluetooth terminal;

[0107] When the current time T d >T1+T y , the first Bluetooth terminal judges that the building material corresponding to the RFID tag is an abnormal building material, controls an alarm connected to the first Bluetooth terminal to alarm, and a site inspection personnel receives the alarm information and goes to the point virtual area where the first Bluetooth terminal is located to check the building material on site;

[0108] The T d is the current time, and T y is a preset threshold value;

[0109] The T y is set according to the actual scene, such as 10min to 30min.

[0110] If there is no abnormality after checking, 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 abnormal information;

[0111] If there is an abnormality after checking, the site inspection personnel suspends the use of the building material corresponding to the RFID tag.

[0112]

Embodiment Three

[0113] On the basis of embodiment two, the step S4 of the site patrol vehicle dynamically adjusts the patrol path according to the abnormal situation of the building material in each point virtual area, and further comprises the following steps:

[0114] S41. When the site patrol vehicle receives the RFID tag information of the building material corresponding to the key attention sent by the site inspection personnel, the site patrol vehicle acquires the time length of the remaining inspection work at the end of the current patrol path.

[0115] S42. The site patrol vehicle calculates the point number reached by the RFID tag corresponding to the key attention building material at the end of the current remaining inspection work time length;

[0116] Further, the site patrol vehicle judges the point number reached by the RFID tag corresponding to the key attention building material at the end of the current remaining inspection work time length according to the current remaining inspection work time length, the time of the RFID tag leaving the current point in the RFID tag information received from the site inspection personnel, the transfer time length of the RFID tag in the tag transfer path table in the site patrol vehicle to the subsequent point and the staying time length at the subsequent point.

[0117] For example, the RFID leaves the current point at 10:00 am, the current remaining inspection time of the construction patrol vehicle is 30 min, the next point of the RFID tag is K, the next point of the next point K is L, the transfer time of the RFID tag from the current point to the next point K is 5 min, the stay time at the next point K is 10 min, the transfer time of the RFID from the next point K to the point L is 10 min, and the stay time at the point L is 30 min. Therefore, when the current remaining inspection time of the construction patrol vehicle ends, i.e., at 10:30, the point number of the RFID tag is L.

[0118] S43. When the construction patrol vehicle completes the current patrol path, the point number obtained in step S42 is taken as the first inspection point of the next inspection path, and the remaining points are re-planned according to the distance from the first inspection point to form an adjusted inspection path.

[0119] When the construction patrol vehicle completes the current patrol path, the point number obtained in step S42 is taken as the first inspection point of the next inspection path, and the remaining points are re-planned according to the distance from the first inspection point to form an adjusted inspection path.

[0120]

Embodiment Four

[0121] On the basis of Embodiment Three, when the construction patrol vehicle enters the virtual area of the current point in step S3, the first Bluetooth terminal sends the data in all the RFID tags stored by it to the construction patrol vehicle, and the specific steps further include the following steps:

[0122] SA. The first Bluetooth terminal obtains the number of times that the construction patrol vehicle enters the virtual area of the current point, and multiplies the number by the MAC address of the first Bluetooth terminal to form an encryption key, and encrypts the data in all the RFID tags stored by the first Bluetooth terminal;

[0123] Further, when the construction site patrol vehicle enters the point position virtual area where the first Bluetooth terminal is located, the construction site patrol vehicle adds 1 to the number of times corresponding to the first Bluetooth terminal in the point position data table stored in the construction site patrol vehicle; and the first Bluetooth terminal adds 1 to the number of times of entering of the construction site patrol vehicle stored in the first Bluetooth terminal.

[0124] The point position data table stored in the construction site patrol vehicle includes each first Bluetooth terminal and the number of times of accessing corresponding to the first Bluetooth terminal, and a MAC address.

[0125] SB. The first Bluetooth terminal transmits the data in the encrypted RFID tag to the construction site patrol vehicle by using a Bluetooth communication mode.

[0126] SC. The construction site patrol vehicle obtains the number of times corresponding to the first Bluetooth terminal of the current point position and a MAC address from the point position data table stored in the construction site patrol vehicle, and multiplies the MAC address and the number of times to obtain a first decryption key, and decrypts the received data.

[0127]

Embodiment Five

[0128] On the basis of the embodiment four, the construction site patrol vehicle transmits the data in the first Bluetooth terminal of each point position virtual area collected by the construction site patrol vehicle to a material tracking platform, and the material tracking platform dynamically and real-timely displays building material data, and specifically includes the following steps:

[0129] On the material tracking platform, the virtual area of each point position is displayed according to the range of the virtual area of each point position, and the information of the building material in the virtual area is dynamically displayed in the virtual area of each point position.

[0130]

Embodiment Six

[0131] The application further provides a building site material tracking system based on the combination of Bluetooth and RFID technologies, and the system specifically includes an RFID tag, a tag reader / writer, a first Bluetooth terminal, a construction site patrol vehicle, and a second Bluetooth terminal.

[0132] The system divides the construction site into a plurality of point position virtual areas.

[0133] Each point position virtual area includes a tag reader / writer and a first Bluetooth terminal, and the tag reader / writer is in communication connection with the first Bluetooth terminal.

[0134] The RFID tag is installed on the building material.

[0135] The construction site patrol vehicle patrols each point position virtual area according to a patrol path, the second Bluetooth terminal is installed on the construction site patrol vehicle, and when the construction site patrol vehicle enters the point position virtual area, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the point position virtual area.

[0136] Specifically, the system performs the following steps:

[0137] S1. When the construction consumables enter the current point virtual area, the RFID tag on the construction consumables is read by the tag reader and writer in the current point virtual area, and the location and entering time of the current point are written into the RFID tag;

[0138] When the construction consumables leave the current point virtual area, the RFID tag on the construction consumables is read by the tag reader and writer in the current point virtual area, and the leaving time is written into the RFID tag;

[0139] The RFID tag on the construction consumables is one or more, which is determined by the type of consumables.

[0140] Further, the construction site is divided into multiple points according to regions, and each point is a region, i.e. a point virtual area;

[0141] For example, the overall space of the construction site is divided into four points A, B, C, and D according to regions, and each point corresponds to a region, i.e. a point virtual area, and the above four regions form the overall space of the construction site.

[0142] Further, a tag reader and a first Bluetooth terminal are installed in each point virtual area.

[0143] The tag reader can read the data in the RFID tag on the construction consumables, and the tag reader is connected to the first Bluetooth terminal.

[0144] Further, the data content read by the tag reader in the RFID tag on the construction consumables includes the construction consumable number, the construction consumable name, the supplier number, the supplier name, and the transfer path.

[0145] Each RFID tag corresponds to one piece of the above data; when a batch of construction consumables has multiple RFID tags, the batch of construction consumables corresponds to multiple pieces of the above data.

[0146] The transfer path is the time when the construction consumables enter and leave each point virtual area, and the specific data format is {[point 1, entering time, leaving time], [point 2, entering time, leaving time], … [point i, entering time, leaving time]}.

[0147] For example, when the construction consumables enter point i+1, the number and entering time of the point i+1 are written into the 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]}.

[0148] When the building material leaves the point i+1, the time of leaving the point i+1 is written into the 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]}.

[0149] When the building material leaves the point i+1, the number of RFID tags with the same building material number and the same supplier number is counted as the total number of batch building materials, and the total number is written into each RFID tag belonging to the same batch of building materials.

[0150] For example, for a batch of building materials containing 3 RFID tags, the building material numbers and supplier numbers in the 3 RFID tags are equal, and when the building material leaves the point, the total number 3 is written into each of the 3 RFID tags of the batch of building materials.

[0151] S2. The tag reader sends the data in the RFID tag on the building material to the first Bluetooth terminal installed in the same point virtual area as the tag reader;

[0152] S3. The first Bluetooth terminal saves the data in the RFID tag on the building material sent by the tag reader and performs data analysis to obtain a data analysis result;

[0153] When the site patrol vehicle enters the current point virtual area, the first Bluetooth terminal sends all the data in the RFID tags stored by the first Bluetooth terminal to the site patrol vehicle;

[0154] The site patrol vehicle patrols each point according to the patrol path and collects the plurality of RFID tag data in the first Bluetooth terminal in each point;

[0155] Further, the second Bluetooth terminal is installed on the site patrol vehicle, and when the site patrol vehicle enters the point virtual area, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the point virtual area.

[0156] S4. The site patrol vehicle dynamically adjusts the patrol path according to the abnormal situation of the building material in each point virtual area;

[0157] S5. The site patrol vehicle transmits the collected data in the first Bluetooth terminal in each point virtual area to the material tracking platform, and the material tracking platform dynamically and real-timely displays the building material data.

[0158] The beneficial effects of the present application are as follows:

[0159] 1. The application adopts the combination of RFID and Bluetooth technology to dynamically track batch building consumables, wherein the RFID communication can enable information reading when the RFID tag is inside the building consumables; the Bluetooth technology can effectively avoid various communication instabilities or interferences caused by complex environment or poor network signal in the construction site.

[0160] 2. The application determines whether the building consumables are abnormal consumables or key attention consumables according to the transfer path of the RFID tag, the quantity of the batch building consumables at each point, the residence duration of the RFID tag at each point, and the transfer duration of the RFID tag between points, and adopts different processing methods to process the building consumables, thereby improving the accuracy of tracking, judging and processing the consumables and improving the overall operation efficiency of the construction site.

[0161] 3. The application first determines whether there is an abnormal batch building consumable according to the transfer path of the RFID tag, and if no abnormality is found, then determines the building consumables according to the quantity, residence duration and transfer duration of the RFID tag, so as to effectively improve the efficiency of determining the condition of the building consumables.

[0162] 4. The application dynamically adjusts the inspection path of the construction site patrol vehicle according to whether the building consumables are key attention, so as to quickly and key inspect the building consumables that may have risks, thereby improving the accuracy of tracking the building consumables.

[0163] 5. The application adopts the product of the number of times that the construction site patrol vehicle enters the point virtual area and the MAC address of the first Bluetooth terminal at the point as the first key to encrypt data; since the inspection path of the construction site patrol vehicle is dynamically changed, the number of times that the construction site patrol vehicle enters the point virtual area is not easy to be obtained by external personnel, so that this encryption method avoids the possibility that external personnel forge the first Bluetooth terminal data and send it to the construction site patrol vehicle, thereby reducing the possibility of illegal behavior of external personnel on the building consumables.

[0164] The above is only the preferred specific embodiment of the application, but the protection scope of the application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered within the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A construction site material tracking method based on the combination of Bluetooth and RFID technologies, characterized by, The method specifically comprises the following steps: S1. When the building consumables enter the current point position virtual area, the RFID tag on the building consumables is read by the tag read-write device in the current point position virtual area, and the position and entering time of the current point position are written into the RFID tag; When the building consumables leave the current point position virtual area, the RFID tag on the building consumables is read by the tag read-write device in the current point position virtual area, and the leaving time is written into the RFID tag; S2. The tag read-write device sends the data in the RFID tag on the building consumables to the first Bluetooth terminal installed in the same point position virtual area as the tag read-write device; S3. The first Bluetooth terminal saves the data in the RFID tag on the building consumables sent by the tag read-write device and performs data analysis to obtain a data analysis result; When the site patrol vehicle enters the current point position virtual area, the first Bluetooth terminal sends all the data in the RFID tags stored by it to the site patrol vehicle; The site patrol vehicle patrols each point position according to a patrol path and collects the plurality of RFID tag data in the first Bluetooth terminal in each point position; S4. The site patrol vehicle dynamically adjusts the patrol path according to the abnormal situation of the building consumables in each point position virtual area; S5. The site patrol vehicle transmits the data in the first Bluetooth terminal in each point position virtual area collected by it to a material tracking platform, and the material tracking platform dynamically and real-timely displays the building consumables data.

2. The building site material tracking method based on the combination of Bluetooth and RFID technologies according to claim 1, wherein the step S1 further comprises: One tag read-write device and one first Bluetooth terminal are installed in each point position virtual area.

3. The building site material tracking method based on the combination of Bluetooth and RFID technologies according to claim 1, wherein the step S1 further comprises: The tag read-write device can read the data in the RFID tag on the building consumables, and the tag read-write device is connected with the first Bluetooth terminal; The content of the data in the RFID tag on the building consumables read by the tag read-write device comprises a building consumables number, a building consumables name, a supplier number, a supplier name, and a transfer path; The transfer path comprises the time when the building consumables enter and leave each point position virtual area.

4. The building site material tracking method based on the combination of Bluetooth and RFID technologies according to claim 1, wherein the step S1 further comprises: S31. The first Bluetooth terminal saves the data in the RFID tag on the building consumables sent by the tag read-write device and obtains the 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 passed through by the RFID tag from entering the site to reaching the current point position in chronological order; S32. The first Bluetooth terminal acquires the label transfer path table stored in the first Bluetooth terminal locally, compares the RFID label transfer path stored in the label transfer path table with the transfer path of the RFID label acquired in step S31, and if they are consistent, executes steps S34 to S36, and if they are inconsistent, executes step S33; S33. The first Bluetooth terminal judges that the batch of construction consumables corresponding to the RFID label is abnormal consumables, controls the alarm connected to the first Bluetooth terminal to alarm, and the site inspection personnel receives the alarm information and goes to the point virtual area where the first Bluetooth terminal is located to check the batch of construction consumables on site; If no abnormality is found after checking, the site inspection personnel modifies the data content in the RFID label and the data content in the first Bluetooth terminal according to the correct RFID label information to eliminate abnormal information; If abnormality is found after checking, the site inspection personnel suspends the use of the construction consumables corresponding to the RFID label; S34. When the RFID label of the batch of construction consumables leaves the point, the first Bluetooth terminal sums up the total number of RFID labels with equal construction consumable numbers and equal supplier numbers as the number of RFID labels of the batch of construction consumables entering the current point virtual area; S35. The first Bluetooth terminal calculates the stay duration of each RFID label at each point and the transfer duration between points according to each RFID label; S36. The first Bluetooth terminal performs data analysis according to the number of RFID labels of the batch of construction consumables entering the current point virtual area, the stay duration of the RFID label at the point, the transfer duration of the RFID label between points, and each loss parameter to obtain a data analysis result.

5. The construction site material tracking method based on the combination of Bluetooth and RFID technologies according to claim 4, characterized in that, In the step S36, the calculation formula of the data analysis is as follows: Wherein, the λ n , λ t , λ z , are respectively the first weight, the second weight, the third weight, wherein, λ n > λ t > λ z ; N hi , N qi are respectively the quantity of the 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 sequence number in the transfer path, and the required quantity of the 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 sequence number in the transfer path and stored in the label transfer path table; T hi , T qi are respectively the RFID The residence duration of the RFID tag at the point corresponding to the i-th serial number in the transfer path, and the RFID tag's residence duration at the point corresponding to the i-th serial number in the transfer path in the label transfer path table; Z hi , Z qi The transfer duration of the RFID tag at the point corresponding to the i-1-th serial number in the transfer path to the point corresponding to the i-th serial number in the transfer path, and the RFID tag's transfer duration at the point corresponding to the i-1-th serial number in the transfer path to the point corresponding to the i-th serial number 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 , S ti , S zi The loss parameter 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 parameter of the residence duration of the RFID tag at the point corresponding to the i-th serial number in the transfer path, and the loss parameter of the transfer duration of the RFID tag at the point corresponding to the i-1-th serial number in the transfer path to the point corresponding to the i-th serial number in the transfer path. The label transfer path table pre-stores the expected number of each batch of construction consumables at each point, the expected stay duration of each RFID label at each point, and the expected transfer duration of each RFID label from one point to the next point.

6. The construction site material tracking method based on the combination of Bluetooth and RFID technologies according to claim 5, characterized in that, The step S36 further comprises: When W>R, the first Bluetooth terminal judges that the construction consumables corresponding to the RFID label are key attention consumables, controls the alarm connected to the first Bluetooth terminal to alarm, and the site inspection personnel receives the alarm information and goes to the point virtual area where the first Bluetooth terminal is located to check the construction consumables on site, and the site inspection personnel sends the RFID label information corresponding to the key attention consumables to the site patrol vehicle; The RFID label information includes: the batch of construction consumable information corresponding to the RFID label, the point number currently left by the RFID label, and the time when the RFID label leaves the current point; When W<R, the first Bluetooth terminal does not perform the alarm operation.

7. The construction site material tracking method based on the combination of Bluetooth and RFID technologies according to claim 6, characterized in that, The step S3 further comprises: The first Bluetooth terminal acquires the time T1 when each RFID label arrives at the current point virtual area in the label transfer path table stored in the first Bluetooth terminal; When the current time T d > T1+T y , the first Bluetooth terminal judges that the building consumables corresponding to the RFID tag are abnormal consumables, controls the alarm connected with the first Bluetooth terminal to alarm, and the site inspection personnel receives the alarm information and goes to the point virtual area where the first Bluetooth terminal is located to check the building consumables on site. The T d is the current time, T y is a preset threshold value; If no abnormality is found after checking, the site inspection personnel modifies the data content in the RFID label and the data content in the first Bluetooth terminal according to the correct RFID label information to eliminate abnormal information; If the check is abnormal, the site inspection personnel suspend the use of the building consumables corresponding to the RFID tag.

8. A construction site material tracking system based on a combination of Bluetooth and RFID technologies, characterized in that, The system specifically comprises an RFID tag, a tag reader / writer, a first Bluetooth terminal, a site patrol vehicle, and a second Bluetooth terminal. The system divides the site into a plurality of point virtual areas. Each point virtual area comprises a tag reader / writer and a first Bluetooth terminal, which are in communication connection. One or more RFID tags are installed on the building consumables. The site patrol vehicle patrols each point virtual area according to a patrol path, and the second Bluetooth terminal is installed on the site patrol vehicle; when the site patrol vehicle enters a point virtual area, the second Bluetooth terminal is in communication connection with the first Bluetooth terminal in the point virtual area. The system performs the following steps: S1. When the building consumables enter a current point virtual area, the tag reader / writer in the current point virtual area reads the RFID tag on the building consumables and writes the location of the current point and the entry time into the RFID tag. When the building consumables leave the current point virtual area, the tag reader / writer in the current point virtual area reads the RFID tag on the building consumables and writes the exit time into the RFID tag. S2. The tag reader / writer sends the data in the RFID tag on the building consumables to the first Bluetooth terminal installed in the same point virtual area as the tag reader / writer. S3. The first Bluetooth terminal saves the data in the RFID tag on the building consumables sent by the tag reader / writer and performs data analysis to obtain a data analysis result. When the site patrol vehicle enters the current point virtual area, the first Bluetooth terminal sends all the data in the RFID tags stored by it to the site patrol vehicle. The site patrol vehicle patrols each point according to a patrol path and collects the plurality of RFID tag data in the first Bluetooth terminal in each point. S4. The site patrol vehicle dynamically adjusts the patrol path according to the abnormal conditions of the building consumables in each point virtual area. S5. The site patrol vehicle transmits the data in the first Bluetooth terminal in each point virtual area collected by it to a material tracking platform, and the material tracking platform dynamically and real-timely displays the building consumables data.

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