RFID data transmission method and system for highland construction environment

Abstract

The application provides an RFID data transmission method and system for highland construction environment, which comprises the following steps: surveying the environment information of a construction area, adjusting the frequency band of an RFID antenna, determining a plurality of data reading positions of the construction area according to the environment information, configuring corresponding RFID tags for each data reading position respectively, carrying out anti-interference processing, reading real-time frequency data generated by each RFID tag, constructing construction information of the construction area, establishing a data transmission scheme, transmitting each real-time frequency data to a corresponding construction terminal for display, transmitting all real-time frequency data and construction information to a smart construction site platform for display, adopting ultrahigh frequency transmission and improving antenna gain, improving the read-write distance of RFID wireless radio frequency technology in the construction site, and combining with a radiation-proof device to improve the anti-interference capability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wireless RFID wireless frequency technology, in particular to a RFID data transmission method and system for highland construction environment. BACKGROUND

[0002] At present, RFID wireless frequency technology has been widely applied in engineering management, and has good application effect in fixed asset inventory, access control, personnel attendance and other functions. RFID electronic tags are installed on site construction equipment, asset information is associated with managers, and site equipment data collection is realized to provide support for related business functions.

[0003] The most basic RFID system consists of electronic tags, readers and antennas, and electronic tags are divided into active electronic tags and passive electronic tags. In the construction environment, electronic tags need to be installed on equipment, and personnel wear or use electronic scanning guns to realize the collection and application of engineering business data. However, in the highland construction environment, there is strong radiation and strong ultraviolet light, and the amount of ultraviolet light is more than 2.5 times that of the plain area. Solar radiation will affect the efficiency and accuracy of RFID wireless frequency technology data transmission.

[0004] Commonly used RFID technology has a short read-write distance. The highland new energy construction area is large, and multiple places are under construction at the same time. It is impossible to install construction fences and access control gate related equipment uniformly. In addition, due to the large number of construction personnel, it is troublesome to collect business data. RFID technology is used to realize data transmission, realize non-inductive collection of business data and convenient management work.

[0005] The construction environment has a large entrance and exit, and the RFID wireless signal is easily affected by human body and equipment shielding objects, which cannot guarantee the accuracy of data collection. The antenna used in the plain area cannot achieve the same effect in the highland new energy environment.

[0006] Therefore, the present application provides a RFID data transmission method and system for highland construction environment. SUMMARY

[0007] The present application provides a RFID data transmission method and system for highland construction environment, which uses ultrahigh frequency transmission and improves the gain of the antenna to improve the read-write distance of the RFID wireless frequency technology in the construction site, and combines the anti-radiation device to improve the anti-interference ability.

[0008] The present application provides a RFID data transmission method for highland construction environment, comprising:

[0009] Step 1: survey the environmental information of the construction area, adjust the frequency band of the RFID antenna according to the environmental information, and determine a plurality of data reading positions of the construction area according to the environmental information.

[0010] Step 2: configuring a corresponding RFID tag for each of the data reading positions respectively, and performing anti-interference processing on each of the RFID tags respectively;

[0011] Step 3: reading real-time radio frequency data generated by each of the RFID tags by using the RFID antenna, and constructing construction information of the construction area according to the real-time radio frequency data;

[0012] Step 4: establishing a data transmission scheme according to construction requirements, transmitting each of the real-time radio frequency data to a corresponding construction terminal for display respectively, and transmitting all of the real-time radio frequency data and the construction information to a smart construction site platform for display respectively.

[0013] In an implementable manner,

[0014] The step 1 comprises:

[0015] Step 11: controlling a UAV to conduct high-altitude surveying on the construction area, and drawing environmental information of the construction area according to a surveying track of the UAV and corresponding surveying data at different time points;

[0016] Step 12: analyzing current frequency band distribution information of the RFID antenna, establishing frequency band requirement information of the construction area according to the environmental information, and constructing a frequency band design scheme by using the frequency band requirement information and the current frequency band distribution information;

[0017] Step 13: adjusting the frequency band of the RFID antenna by using the frequency band design scheme, and obtaining a plurality of frequency band characteristics of the RFID antenna after the frequency band adjustment;

[0018] Step 14: determining a reading range corresponding to each of the frequency band characteristics in the environmental information, and centering each of the reading ranges to obtain a plurality of data reading positions of the construction area.

[0019] In an implementable manner,

[0020] The step 12 comprises:

[0021] Step 121: obtaining a plurality of basic setting parameters of the RFID antenna, and calculating a quality factor of the RFID antenna by using formula (1);

[0022]

[0023] Wherein, Q represents the quality factor of the RFID antenna, f1 represents the first basic setting parameter of the RFID antenna, specifically the maximum operating frequency threshold of the RFID antenna, f2 represents the second basic setting parameter of the RFID antenna, specifically the maximum operating frequency threshold of the RFID antenna, L represents the third basic setting parameter of the RFID antenna, specifically the operating frequency threshold of the RFID antenna, and R represents the fourth basic setting parameter of the RFID antenna, specifically the resistance of the RFID antenna.

[0024] Step 122: Analyze the transmission performance characteristics of the RFID antenna in different frequency bands according to the quality factor, and calculate the transmission performance characteristics corresponding to each of the frequency bands according to formula (2) to construct the quality information corresponding to the RFID antenna in different frequency bands.

[0025]

[0026] Wherein, X i represents the quality information corresponding to the i-th frequency band, m represents the total amount of external interference factors of the frequency band, K i j represents the ideal receiving distance of the i-th frequency band when the interference amount of the j-th external interference factor is 0, and a i represents the transmission performance characteristics corresponding to the i-th frequency band, represents the propagation factor, specifically the receiving distance of the i-th frequency band under the action of external interference factors.

[0027] According to the transmission performance characteristics corresponding to each of the frequency bands, the quality information corresponding to the RFID antenna in different frequency bands is constructed, and the current frequency band distribution information of the RFID antenna is constructed.

[0028] Step 123: Analyze the environment information, determine a plurality of communication positions contained in the environment information, match a corresponding communication frequency band for each of the communication positions according to the communication distance between each of the communication positions and the RFID antenna and a preset frequency band-distance list, and generate the frequency band demand information of the construction area.

[0029] Step 124: Determine the to-be-adjusted frequency band of the RFID antenna according to the information difference between the frequency band demand information and the current frequency band distribution information, generate the adjustment measure corresponding to each of the to-be-adjusted frequency bands according to the preset structure adjustment mode corresponding to each of the frequency bands, and obtain the frequency band design scheme of the RFID antenna.

[0030] In an implementable manner,

[0031] The step 2 comprises:

[0032] Step 21: constructing a position distribution map of the data reading positions in the construction area, obtaining a data occurrence frequency corresponding to each data reading position respectively, and configuring an RFID tag of a corresponding identification frequency band for each data reading position based on the data occurrence frequency;

[0033] Step 22: analyzing a transmission distance difference between an actual transmission distance and an ideal transmission distance corresponding to each RFID tag, and screening a target RFID tag whose transmission distance difference does not meet a specified distance standard;

[0034] Step 23: discretely processing a transmission cycle corresponding to each target RFID tag respectively to obtain a plurality of time limits corresponding to each RFID tag, respectively counting a plurality of tag values corresponding to each time limit, and finding a target time limit whose channel utilization rate is higher than a standard utilization rate;

[0035] Step 24: tracing a source of each tag value corresponding to the target time limit to obtain a target RFID tag corresponding to each tag value, respectively finding a blank time limit corresponding to each target RFID tag, distributing the plurality of tag values corresponding to the target time limit into the blank time limit, and obtaining an adjusted transmission cycle corresponding to each target RFID tag.

[0036] In an implementable manner,

[0037] The step 22 comprises:

[0038] Step 221: calculating an ideal transmission distance corresponding to each RFID tag respectively by using formula (3);

[0039]

[0040] wherein, D k an ideal transmission distance corresponding to the kth RFID tag, pr k denotes a receiving power corresponding to the RFID antenna when receiving data generated by the kth RFID tag, pt k denotes a transmission power corresponding to the kth RFID tag when generating data, Gr k denotes a receiving antenna gain corresponding to the RFID antenna when receiving data generated by the kth RFID tag, GT k denotes a transmission tag gain corresponding to the kth RFID tag when generating data, f1 denotes a first basic setting parameter of the RFID antenna, specifically a maximum working frequency threshold of the RFID antenna, f2 denotes a second basic setting parameter of the RFID antenna, specifically a maximum working frequency threshold of the RFID antenna, and c denotes a constant light speed;

[0041] Step 222: calculating the actual transmission distance corresponding to each of the RFID tags by using formula (4);

[0042]

[0043] wherein, A k represents the actual transmission distance corresponding to the kth RFID tag, h represents the position altitude corresponding to the data reading position of the RFID tag, x h represents the transmission attenuation coefficient corresponding to the RFID tag at the corresponding position altitude;

[0044] Step 223: constructing the regulation distance standard corresponding to each of the RFID tags according to the calculation result of formula (3) in combination with the preset transmission ratio;

[0045] Step 224: determining the transmission distance difference corresponding to each of the RFID tags according to the calculation results of formula (3) and (4), and screening the target RFID tags that do not meet the corresponding regulation distance standard.

[0046] In an implementable manner,

[0047] The step 3 comprises:

[0048] Step 31: controlling the RFID antenna to read the real-time frequency data generated by each of the RFID tags respectively, constructing a data mapping matrix according to the data reading position corresponding to each of the RFID tags, and mapping each of the real-time frequency data into the data mapping matrix respectively to obtain a real-time construction matrix of the construction area;

[0049] Step 32: performing dynamic analysis on each matrix column of the real-time construction matrix to obtain a plurality of dynamic characteristics of the construction area, and constructing the regional construction information corresponding to each of the data reading positions in combination with the construction characteristics corresponding to each of the data reading positions of the construction area;

[0050] Step 33: analyzing the construction logic relationship between different data reading positions in the construction area, counting the regional construction information corresponding to each of the data reading positions, and constructing the construction information of the construction area in combination with the construction logic relationship.

[0051] In an implementable manner,

[0052] The step 4 comprises:

[0053] Step 41: obtaining the construction demand of the construction area, determining a plurality of supervision data reading positions corresponding to each construction terminal according to the construction demand, and constructing a data transmission scheme of the construction area;

[0054] Step 42: configuring a corresponding RFID tag reader for each of the construction terminals according to the data transmission scheme, reading real-time radio frequency data of the corresponding RFID tag by using the tag reader, and transmitting the real-time radio frequency data to the construction terminal for display;

[0055] Step 43: synchronously processing all the real-time radio frequency data to obtain synchronous data of the construction area, and transmitting the synchronous data and the construction information to the smart construction site platform for display.

[0056] In an implementable manner,

[0057] The step 223 comprises:

[0058] According to formula (5), the free loss distance corresponding to each of the RFID tags is calculated respectively;

[0059]

[0060] wherein, S k represents the free loss distance corresponding to the kth RFID tag, D k represents the ideal transmission distance corresponding to the kth RFID tag, F k represents the data generation frequency corresponding to the kth RFID tag, and c represents the constant light speed.

[0061] According to formula (6), the specified distance standard corresponding to each of the RFID tags is calculated respectively;

[0062] G k = (D k -S k )*96.5% (6)

[0063] wherein, 96.5% represents a preset transmission ratio.

[0064] In an implementable manner,

[0065] Further comprising:

[0066] According to formula (7), the channel utilization rate corresponding to each of the time limits is calculated respectively;

[0067] P u =G u *e^(-2G u ) (7)

[0068] P u represents the channel utilization rate corresponding to the uth time limit, G u represents the average arrival rate of the tag value corresponding to the uth time limit.

[0069] The application provides an RFID data transmission system for a highland construction environment, comprising:

[0070] A survey adjustment module is used for surveying environment information of a construction area, adjusting a frequency band of an RFID antenna according to the environment information, and determining a plurality of data reading positions of the construction area according to the environment information;

[0071] An interference elimination module is used for configuring a corresponding RFID tag for each data reading position and performing anti-interference processing on each RFID tag respectively;

[0072] A data reading module is used for reading real-time frequency data generated by each RFID tag by using the RFID antenna, and constructing construction information of the construction area according to the real-time frequency data;

[0073] A transmission execution module is used for establishing a data transmission scheme according to construction requirements, transmitting each real-time frequency data to a corresponding construction terminal for display, and transmitting all real-time frequency data and the construction information to a smart construction site platform for display.

[0074] The above technical solution has the following beneficial effects: in order to make the wireless RFID frequency technology better adapt to the highland environment, the environment information of the construction area is surveyed before data transmission, so that the frequency band of the RFID antenna is adjusted according to the actual environment information, and the data reading position of the construction area where data is generated is determined according to the environment information, then a corresponding RFID tag is configured for each data reading position, in order to eliminate the interference of the highland environment on the RFID data, the RFID tag is subjected to anti-interference processing, so that the real-time frequency data generated by each RFID tag can be read by using the RFID antenna, and then the construction information of the construction area is constructed, finally, different real-time frequency data and construction information are transmitted according to the management requirements of different terminals, realizing super-long distance transmission, and effectively improving the application of the RFID frequency technology in the highland environment.

[0075] Other features and advantages of the application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. The objects and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0076] The technical solutions of the application will be further described in detail below with reference to the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0077] The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application, and together with the description serve to explain the principles of the application, and should not be taken as limiting the application. In the drawings:

[0078] Figure 1 A schematic diagram of a work flow of an RFID data transmission method for a highland construction environment according to an embodiment of the application;

[0079] Figure 2 A schematic diagram of a composition of an RFID data transmission system for a highland construction environment according to an embodiment of the application. DETAILED DESCRIPTION

[0080] The preferred embodiments of the application will be described hereinafter with reference to the accompanying drawings, in which the preferred embodiments of the application will be presented in order to enable those skilled in the art to carry out the application. It should be understood that the preferred embodiments described herein are presented by way of explanation of the application, and are not used as limitations of the application.

[0081] Embodiment 1

[0082] This embodiment provides an RFID data transmission method for a highland construction environment, as shown in the accompanying drawings, comprising: Figure 1

[0083] Step 1: Survey the environmental information of the construction area, adjust the frequency band of the RFID antenna using the environmental information, and determine a plurality of data reading positions of the construction area according to the environmental information;

[0084] Step 2: Configure a corresponding RFID tag for each data reading position, and perform anti-interference processing on each RFID tag respectively;

[0085] Step 3: Read the real-time frequency data generated by each RFID tag using the RFID antenna, and construct the construction information of the construction area according to the real-time frequency data;

[0086] Step 4: Establish a data transmission scheme according to the construction requirements, transmit each real-time frequency data to the corresponding construction terminal for display, and transmit all real-time frequency data and construction information to the smart construction platform for display.

[0087] In this example, the larger the antenna, the greater the output power, and the farther the read-write distance. However, a large antenna size will result in a decrease in signal-to-noise ratio, and anti-interference errors, blind areas, and other problems will occur. Therefore, the antenna size should be reduced as much as possible, and the gain should be improved. The antenna needs to be designed in a highland environment;

[0088] In this example, one data reading position is configured with one RFID tag;

[0089] ​In this example, the construction information includes construction progress and construction safety information of the construction area.

[0090] In this example, the construction terminal represents an operation platform for viewing and managing a part of the construction area, and the smart construction site platform represents an operation platform for unified management of the construction area.

[0091] The working principle and beneficial effects of the above technical solution are as follows: In order to better adapt the wireless RFID frequency technology to the plateau environment, the environmental information of the construction area is surveyed before data transmission, so that the frequency band of the RFID antenna is adjusted according to the actual environmental information, and the data reading position where data is generated in the construction area is determined according to the environmental information, and then each data reading position is configured with a corresponding RFID tag. In order to eliminate the interference of the plateau environment on the RFID data, the RFID tag is subjected to anti-interference processing, so that the real-time frequency data generated by each RFID tag can be read by the RFID antenna, and then the construction information of the construction area is constructed. Finally, different real-time frequency data and construction information are transmitted according to the management needs of different terminals, realizing ultra-long distance transmission and effectively improving the application of RFID frequency technology in the plateau environment.

[0092] Embodiment 2

[0093] On the basis of embodiment 1, the RFID data transmission method for the plateau construction environment, step 1, comprises:

[0094] Step 11: controlling the unmanned aerial vehicle to conduct high-altitude surveying on the construction area, and drawing the environmental information of the construction area according to the surveying track of the unmanned aerial vehicle and the corresponding surveying data at different times;

[0095] Step 12: analyzing the current frequency band distribution information of the RFID antenna, establishing the frequency band demand information of the construction area according to the environmental information, and constructing a frequency band design scheme by using the frequency band demand information and the current frequency band distribution information;

[0096] Step 13: adjusting the frequency band of the RFID antenna by using the frequency band design scheme, and obtaining a plurality of frequency band characteristics of the RFID antenna after frequency band adjustment;

[0097] Step 14: determining the reading range corresponding to each frequency band characteristic in the environmental information, respectively positioning the center of each reading range, and obtaining a plurality of data reading positions of the construction area.

[0098] In this example, the current frequency band distribution information represents the frequency bands that can be collected by the RFID and the frequency band stability degree corresponding to each collectable frequency band.

[0099] In this example, the frequency band requirement information indicates all the frequency bands needed to complete data transmission in the construction area.

[0100] The working principle and beneficial effects of the above technical solution are as follows: By using drones to conduct high-altitude surveys of the construction area to map the environmental information of the construction area, the current frequency band distribution information of the RFID antenna and the frequency band demand information of the construction area are analyzed to construct a frequency band design scheme. Using this scheme, the frequency band of the RFID antenna is adjusted, and several frequency band characteristics of the RFID antenna are determined. Thus, based on the center position of each reading range, multiple data reading positions in the construction area are determined, thereby ensuring that accurate and widely distributed data can be collected subsequently.

[0101] Example 3

[0102] Based on Example 2, the RFID data transmission method for high-altitude construction environments is characterized in that step 12 includes:

[0103] Step 121: Obtain several basic setting parameters of the RFID antenna and calculate the quality factor of the RFID antenna using formula (1);

[0104]

[0105] Wherein, Q represents the quality factor of the RFID antenna, f1 represents the first basic setting parameter of the RFID antenna, specifically the maximum operating frequency threshold of the RFID antenna, f2 represents the second basic setting parameter of the RFID antenna, specifically the maximum operating frequency threshold of the RFID antenna, L represents the third basic setting parameter of the RFID antenna, specifically the operating frequency threshold of the RFID antenna, and R represents the fourth basic setting parameter of the RFID antenna, specifically the resistance of the RFID antenna.

[0106] Step 122: Analyze the transmission performance characteristics of the RFID antenna in different frequency bands based on the quality factor, and calculate the transmission performance characteristics corresponding to each frequency band according to formula (2) to construct the quality information of the RFID antenna in different frequency bands;

[0107]

[0108] Among them, X i This represents the quality information corresponding to the i-th frequency band, where m represents the total amount of external interference factors in the frequency band, and K... i j represents the ideal receiving distance for the i-th frequency band when the interference from the j-th external interference factor is 0, and α i This represents the transmission performance characteristics corresponding to the i-th frequency band. represents a propagation factor, and specifically represents a receiving distance of the i-th frequency band under the influence of external interference factors;

[0109] According to the transmission performance characteristics corresponding to each of the frequency bands, the quality information corresponding to the different frequency bands of the RFID antenna is constructed, and the current frequency band distribution information of the RFID antenna is constructed.

[0110] Step 123: Analyzing the environment information, determining a plurality of communication positions contained in the environment information, and according to the communication distance between each of the communication positions and the RFID antenna, combining a preset frequency band-distance list to match a corresponding communication frequency band for each of the communication positions respectively, and generating the frequency band demand information of the construction area;

[0111] Step 124: According to the information difference between the frequency band demand information and the current frequency band distribution information, determining the to-be-adjusted frequency band of the RFID antenna, combining the preset structure adjustment mode corresponding to each frequency band to generate the adjustment measure corresponding to each of the to-be-adjusted frequency bands respectively, and obtaining the frequency band design scheme of the RFID antenna.

[0112] In this example, the external interference factors include: total number of tags, highland metal interference, highland air humidity, highland radiation duration, and transmission loss. The following table shows the minimum interference starting point corresponding to each interference factor. When the interference factor reaches the minimum interference starting point, m = 1. For example, when the highland radiation duration is greater than or equal to 8 hours, the value of m is 1.

[0113]

[0114] In this example, the quality information contains 5 levels, and the following table shows the meaning corresponding to each level.

[0115] Degree of impact Meaning Greater than 1 Less than 2 Slight impact on wireless signal transmission, but no impact on data reception Greater than 2 Less than 3 Impact on wireless signal transmission, data reception is disturbed Greater than 3 Less than 4 Impact on wireless signal transmission, data reception is disturbed, accuracy is reduced Greater than 4 Less than 5 Severe impact on wireless signal transmission, accuracy of reception is less than 50% Greater than 5 Severe impact on wireless signal transmission, data cannot be transmitted

[0116] In this example, the preset frequency band-distance list contains the data transmission distance corresponding to each frequency band.

[0117] In this example, the preset structure adjustment mode is to redesign the RFID antenna and reduce the interference of external signals on the antenna by installing shielding structure metal sheets.

[0118] The working principle and beneficial effects of the technical solution are as follows: in order to set a better frequency band design scheme, first, the quality factor of the RFID antenna is calculated according to the basic setting parameters of the RFID antenna, then the transmission performance characteristics of the RFID antenna in different frequency bands are analyzed, so as to calculate the quality information corresponding to different frequency bands, thereby constructing the current frequency band distribution information of the RFID antenna, then the communication positions required by the plateau environment are determined by analyzing the environmental information, and the corresponding communication frequency band is matched for each communication position according to different communication distances, so as to determine the frequency band demand information of each construction area, finally, the information difference between two frequency band information is used to determine the to-be-adjusted frequency band of the RFID antenna, and finally the structure of the RFID antenna is adjusted, so that the frequency band design scheme of the RFID antenna is obtained, which lays a foundation for subsequent data acquisition work.

[0119] Embodiment 4

[0120] On the basis of embodiment 1, the RFID data transmission method for a plateau construction environment, the step 2 comprises:

[0121] Step 21: constructing a position distribution map of the data reading positions in the construction area, respectively acquiring the data occurrence frequency corresponding to each data reading position, and respectively configuring the RFID tags of the corresponding identification frequency bands for each data reading position based on the data occurrence frequency;

[0122] Step 22: analyzing the transmission distance difference between the actual transmission distance and the ideal transmission distance corresponding to each RFID tag, and screening the target RFID tags whose transmission distance difference does not meet the specified distance standard;

[0123] Step 23: respectively performing discrete processing on the emission cycle corresponding to each target RFID tag, obtaining a plurality of time limits corresponding to each RFID tag, respectively counting a plurality of tag values corresponding to each time limit, and finding a target time limit whose channel utilization rate is higher than the standard utilization rate;

[0124] Step 24: performing source tracing on each tag value corresponding to the target time limit, obtaining the target RFID tag corresponding to each tag value, respectively finding the blank time limit corresponding to each target RFID tag, distributing the plurality of tag values corresponding to the target time limit into the blank time limit, and obtaining the adjusted emission cycle corresponding to each target RFID tag.

[0125] In this example, the time limit represents a plurality of time short and small capacity frames formed after the emission cycle of the target RFID tag is discretely processed, and the target time limit represents the time limit in which capacity overflow occurs, for example, the time limit 2 of frame 1 and the time limit 3 of frame 2 in the following table collide;

[0126]

[0127]

[0128] The working principle and beneficial effects of the above technical solutions are as follows: in order to better complete the data transmission work, the position distribution map of the data reading position is constructed, and the data occurrence probability of each data reading position is obtained at the same time, the RFID tag of the corresponding frequency band is configured for each data reading position, the target RFID tag that does not meet the transmission distance specification is screened, the transmission period of the target RFID tag is discretely processed, the corresponding time limit is determined, then the target time limit with high channel utilization rate is traced back to the source, and the several tag values carried by the target time limit are shunted to the blank time slot of the RFID tag, and then the transmission period of the RFID tag is adjusted accordingly, so that the data can be completely and effectively transmitted to each terminal.

[0129] Embodiment 5

[0130] On the basis of embodiment 4, the RFID data transmission method for highland construction environment, the step 22 comprises:

[0131] Step 221: calculate the ideal transmission distance corresponding to each RFID tag by formula (3) respectively;

[0132]

[0133] Wherein, D k The ideal transmission distance corresponding to the kth RFID tag, pr k Indicates the corresponding receiving power of the RFID antenna when receiving the data generated by the kth RFID tag, pt k Indicates the corresponding transmission power of the data generated by the kth RFID tag, Gr k Indicates the corresponding receiving antenna gain of the RFID antenna when receiving the data generated by the kth RFID tag, GT k Indicates the corresponding transmission tag gain of the data generated by the kth RFID tag, f1 indicates the first basic setting parameter of the RFID antenna, specifically the maximum working frequency threshold of the RFID antenna, f2 indicates the second basic setting parameter of the RFID antenna, specifically the maximum working frequency threshold of the RFID antenna, and c indicates the constant light speed;

[0134] Step 222: calculate the actual transmission distance corresponding to each RFID tag by formula (4);

[0135]

[0136] wherein, A k represents the actual transmission distance corresponding to the kth RFID tag, h represents the position altitude corresponding to the data reading position of the RFID tag, x h represents the transmission attenuation coefficient corresponding to the RFID tag at the corresponding position altitude;

[0137] Step 223: constructing the prescribed distance standard corresponding to each RFID according to the calculation result of formula (3) combined with the preset transmission ratio;

[0138] Step 224: determining the transmission distance difference corresponding to each RFID tag according to the calculation results of formula (3) and (4), and screening the target RFID tag that does not meet the corresponding prescribed distance standard.

[0139] In this example, the preset transmission ratio is 96.5%.

[0140] The working principle and beneficial effects of the above technical solution are as follows: the ideal transmission distance and the actual transmission distance of each RFID are calculated by using formula, and then the target RFID tag that does not meet the prescribed distance standard is screened, so that only the unqualified RFID tag can be processed, and the work efficiency is effectively improved.

[0141] Embodiment 6

[0142] On the basis of embodiment 1, the RFID data transmission method for highland construction environment, the step 3 comprises:

[0143] Step 31: controlling the RFID antenna to read the real-time frequency data generated by each RFID tag respectively, constructing a data mapping matrix according to the data reading position corresponding to each RFID tag, and respectively mapping each real-time frequency data into the data mapping matrix to obtain a real-time construction matrix of the construction area;

[0144] Step 32: dynamically analyzing each matrix column of the real-time construction matrix to obtain a plurality of dynamic characteristics of the construction area, and constructing the regional construction information corresponding to each data reading position combined with the construction characteristics corresponding to each data reading position of the construction area;

[0145] Step 33: analyzing the construction logic relationship between different data reading positions in the construction area, counting the regional construction information corresponding to each data reading position, and constructing the construction information of the construction area combined with the construction logic relationship.

[0146] The working principle and beneficial effects of the above technical solution are as follows: the real-time radio frequency data read by the RFID antenna is arranged in a matrix, and then the obtained real-time construction matrix is dynamically analyzed to determine a plurality of dynamic characteristics of the construction area. Furthermore, the regional construction information of each data reading position is constructed in combination with the construction characteristics of the construction area, and the construction information of the construction area is constructed in combination with the construction logic relationship between different data reading positions. The dynamic characteristics of the construction area are expressed by using the intuitiveness of the matrix, so as to construct the construction information, thereby guaranteeing the effectiveness and efficiency of the construction information.

[0147] Embodiment 7

[0148] On the basis of embodiment 1, the step 4 of the RFID data transmission method for a highland construction environment comprises:

[0149] Step 41: Obtain the construction demand of the construction area, determine a plurality of supervision data reading positions corresponding to each construction terminal according to the construction demand, and construct a data transmission scheme of the construction area;

[0150] Step 42: According to the data transmission scheme, configure a corresponding RFID tag reader for each construction terminal, read the real-time radio frequency data of the corresponding RFID tag by using the tag reader, and transmit the real-time radio frequency data to the construction terminal for display;

[0151] Step 43: Synchronously process all the real-time radio frequency data to obtain synchronous data of the construction area, and transmit the synchronous data and the construction information to a smart construction site platform for display.

[0152] The working principle and beneficial effects of the above technical solution are as follows: the supervision position of each construction terminal is determined according to the construction demand of different areas, so as to construct a construction data transmission scheme, configure a corresponding tag reader for each construction terminal, and then realize the transmission and display of data. At the same time, the real-time radio frequency data and the construction information are transmitted to the smart construction site platform for display, thereby improving the transmission efficiency and accuracy of data.

[0153] Embodiment 8

[0154] On the basis of embodiment 5, the RFID data transmission method for a highland construction environment comprises the following steps:

[0155] According to formula (5), the free loss distance corresponding to each RFID tag is calculated;

[0156]

[0157] S = 2.45 * 10 7 kD represents the free loss distance corresponding to the kth RFID tag k F represents the ideal transmission distance corresponding to the kth RFID tag k c represents the constant light speed

[0158] The formula (6) is used to calculate the specified distance standard corresponding to each RFID tag respectively.

[0159] G k = (D k -S k )*96.5% (6)

[0160] 96.5% represents the preset transmission ratio.

[0161] The working principle and beneficial effects of the above technical solution are that the free loss is considered when setting the specified distance standard, ensuring the rationality of the specified distance standard.

[0162] Embodiment 9

[0163] Based on the embodiment 4, the RFID data transmission method for the plateau construction environment further comprises:

[0164] The formula (7) is used to calculate the channel utilization rate corresponding to each time limit respectively.

[0165] P u =G u *e^(-2G u ) (7)

[0166] P u represents the channel utilization rate corresponding to the uth time limit u G represents the average arrival rate of the tag value corresponding to the uth time limit.

[0167] The working principle and beneficial effects of the above technical solution are that the channel utilization rate of each time limit is calculated, which can improve the efficiency and accuracy of screening the target RFID tag.

[0168] Embodiment 10

[0169] The embodiment provides an RFID data transmission system for a plateau construction environment, as shown in the figure, comprising: Figure 2

[0170] The survey adjustment module is used for surveying the environmental information of the construction area, adjusting the frequency band of the RFID antenna by using the environmental information, and determining a plurality of data reading positions of the construction area according to the environmental information.

[0171] ​An interference elimination module is configured to configure a corresponding RFID tag for each data reading position respectively, and to perform anti-interference processing on each RFID tag respectively;

[0172] A data reading module is configured to read real-time radio frequency data generated by each RFID tag using the RFID antenna, and to construct construction information of the construction area according to the real-time radio frequency data;

[0173] A transmission execution module is configured to establish a data transmission scheme according to construction requirements, to transmit each real-time radio frequency data to a corresponding construction terminal for display respectively, and to transmit all real-time radio frequency data and the construction information to a smart construction site platform for display respectively.

[0174] In this example, the larger the antenna, the greater the output power, and the farther the read-write distance. However, an excessively large antenna size will result in a decrease in signal-to-noise ratio, and anti-interference errors, read blind areas, and other problems will occur. Therefore, the antenna size is reduced as much as possible, and the gain is improved. The antenna needs to be designed in a high-altitude environment.

[0175] In this example, one data reading position is configured with one RFID tag.

[0176] In this example, the construction information includes construction progress and construction safety information of the construction area.

[0177] In this example, the construction terminal represents an operation platform for viewing and managing a part of the construction area, and the smart construction site platform represents an operation platform for unified management of the construction area.

[0178] The working principle and beneficial effects of the above technical solution are as follows: In order to make the wireless RFID radio frequency technology better adapt to the high-altitude environment, the environment information of the construction area is surveyed before data transmission, so that the frequency band of the RFID antenna is adjusted according to the actual environment information, and the data reading position where data is generated in the construction area is determined according to the environment information. Then, a corresponding RFID tag is configured for each data reading position respectively. In order to eliminate the interference of the high-altitude environment on the RFID data, the RFID tag is subjected to anti-interference processing. Thus, the real-time radio frequency data generated by each RFID tag can be read using the RFID antenna, and the construction information of the construction area can be constructed. Finally, different real-time radio frequency data and construction information are transmitted according to the management requirements of different terminals, realizing ultra-long distance transmission and effectively improving the application of the RFID radio frequency technology in the high-altitude environment.

[0179] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A method for RFID data transmission for high altitude construction environments, characterized by, The method comprises the following steps: Step 1: surveying the environmental information of the construction area, adjusting the frequency band of the RFID antenna according to the environmental information, and determining a plurality of data reading positions in the construction area according to the environmental information; Step 2: configuring a corresponding RFID tag for each data reading position, and respectively performing anti-interference processing on each RFID tag; Step 3: reading real-time radio frequency data generated by each RFID tag using the RFID antenna, and constructing construction information of the construction area according to the real-time radio frequency data; Step 4: establishing a data transmission scheme according to the construction requirements, respectively transmitting each real-time radio frequency data to the corresponding construction terminal for display, and transmitting all real-time radio frequency data and construction information to the smart construction platform for display; Wherein, the step 2 comprises: Step 21: constructing a position distribution diagram of the data reading positions in the construction area, respectively acquiring the data occurrence frequency corresponding to each data reading position, and respectively configuring an RFID tag with a corresponding identification frequency band for each data reading position based on the data occurrence frequency; Step 22: analyzing the transmission distance difference between the actual transmission distance and the ideal transmission distance corresponding to each RFID tag, and screening target RFID tags whose transmission distance difference does not meet the specified distance standard; Step 23: respectively performing discrete processing on the transmission cycle corresponding to each target RFID tag, obtaining a plurality of time limits corresponding to each RFID tag, respectively counting a plurality of tag values corresponding to each time limit, and finding a target time limit with a channel utilization rate higher than a standard utilization rate; Step 24: tracing the source of each tag value corresponding to the target time limit to obtain a target RFID tag corresponding to each tag value, respectively finding a blank time limit corresponding to each target RFID tag, and distributing a plurality of tag values corresponding to the target time limit to the blank time limit to obtain an adjusted transmission cycle corresponding to each target RFID tag.

2. The RFID data transmission method for high altitude construction environments of claim 1, wherein, The step 1 comprises: Step 11: controlling a UAV to conduct high-altitude surveying on the construction area, and drawing the environmental information of the construction area according to the surveying track of the UAV and the corresponding surveying data at different time; Step 12: analyzing the current frequency band distribution information of the RFID antenna, establishing frequency band requirement information of the construction area according to the environmental information, and constructing a frequency band design scheme using the frequency band requirement information and the current frequency band distribution information; Step 13: adjusting the frequency band of the RFID antenna using the frequency band design scheme to obtain a plurality of frequency band characteristics of the RFID antenna after frequency band adjustment; Step 14: determining the reading range corresponding to each frequency band characteristic in the environmental information, respectively positioning the center of each reading range, and obtaining a plurality of data reading positions in the construction area.

3. The RFID data transmission method for high altitude construction environments of claim 2, wherein, The step 12 comprises: Step 121: acquiring a plurality of basic setting parameters of the RFID antenna, and calculating the quality factor of the RFID antenna using formula (1); （1） wherein, represents a quality factor of the RFID antenna, represents a first basic setting parameter of the RFID antenna, in particular a maximum operating frequency threshold of the RFID antenna, represents a second basic setting parameter of the RFID antenna, in particular a minimum operating frequency threshold of the RFID antenna, represents a third basic setting parameter of the RFID antenna, in particular a current operating frequency threshold of the RFID antenna, represents a fourth basic setting parameter of the RFID antenna, in particular a resistance of the RFID antenna; Step 122: analyzing the transmission performance characteristics of the RFID antenna in different frequency bands according to the quality factor, calculating the transmission performance characteristics corresponding to each of the frequency bands according to formula (2), and constructing the quality information of the RFID antenna in different frequency bands corresponding to each of the frequency bands; （2） wherein, denotes the quality information corresponding to the ith frequency band, m denotes the total amount of external interference factors of the frequency band, denotes the ideal receiving distance of the RFID antenna in the ith frequency band when the interference amount of the jth external interference factor is 0, denotes the transmission performance characteristic corresponding to the ith frequency band, denotes the propagation factor, and specifically denotes the receiving distance of the ith frequency band under the action of external interference factors; constructing the quality information of the RFID antenna in different frequency bands corresponding to each of the frequency bands according to the transmission performance characteristics corresponding to each of the frequency bands, and constructing the current frequency band distribution information of the RFID antenna according to the quality information of the RFID antenna in different frequency bands corresponding to each of the frequency bands; Step 123: analyzing the environment information to determine a plurality of communication positions contained in the environment information, matching a corresponding communication frequency band for each of the communication positions according to the communication distance between each of the communication positions and the RFID antenna and a preset frequency band-distance list, and generating frequency band demand information of the construction area; Step 124: determining the to-be-adjusted frequency band of the RFID antenna according to the information difference between the frequency band demand information and the current frequency band distribution information, generating an adjustment measure corresponding to each of the to-be-adjusted frequency bands according to a preset structure adjustment mode corresponding to each of the frequency bands, and obtaining a frequency band design scheme of the RFID antenna.

4. The RFID data transmission method for high altitude construction environments of claim 1, wherein, The step 22 comprises: Step 221: calculating the ideal transmission distance corresponding to each of the RFID tags respectively by using formula (3); （3） wherein, represents the ideal transmission distance corresponding to the kth RFID tag, represents the receiving power corresponding to the kth RFID tag when the RFID antenna receives the data generated by the kth RFID tag, represents the transmitting power corresponding to the kth RFID tag when the data generated by the kth RFID tag, represents the receiving antenna gain corresponding to the kth RFID tag when the RFID antenna receives the data generated by the kth RFID tag, represents the transmitting tag gain corresponding to the kth RFID tag when the data generated by the kth RFID tag, represents the first basic setting parameter of the RFID antenna, specifically the maximum operating frequency threshold of the RFID antenna, represents the second basic setting parameter of the RFID antenna, specifically the minimum operating frequency threshold of the RFID antenna, and c represents the constant speed of light; Step 222: calculating the actual transmission distance corresponding to each of the RFID tags by using formula (4); （4） wherein, represents the actual transmission distance corresponding to the kth RFID tag, h represents the position altitude corresponding to the data reading position of the RFID tag, represents the transmission attenuation coefficient corresponding to the RFID tag at the corresponding position altitude; Step 223: constructing the regulation distance standard corresponding to each of the RFID tags according to the calculation result of formula (3) and a preset transmission ratio; Step 224: determining the transmission distance difference corresponding to each of the RFID tags according to the calculation results of formulas (3) and (4), and screening target RFID tags that do not meet the corresponding regulation distance standard.

5. The RFID data transmission method for high altitude construction environments of claim 1, wherein, The step 3 comprises: Step 31: controlling the RFID antenna to read real-time radio frequency data generated by each of the RFID tags respectively, constructing a data mapping matrix according to the data reading position corresponding to each of the RFID tags, and mapping each of the real-time radio frequency data into the data mapping matrix to obtain a real-time construction matrix of the construction area; Step 32: dynamically analyzing each matrix column of the real-time construction matrix to obtain a plurality of dynamic characteristics of the construction area, and constructing regional construction information corresponding to each of the data reading positions according to the construction characteristics corresponding to each of the data reading positions of the construction area; Step 33: analyzing the construction logic relationship between different data reading positions in the construction area, counting the regional construction information corresponding to each of the data reading positions, and constructing construction information of the construction area according to the construction logic relationship.

6. The RFID data transmission method for high altitude construction environments of claim 1, wherein, The step 4 comprises: Step 41: obtaining construction demand of the construction area, determining a plurality of supervision data reading positions corresponding to each of the construction terminals according to the construction demand, and constructing a data transmission scheme of the construction area; Step 42: configuring a corresponding RFID tag reader for each of the construction terminals according to the data transmission scheme, reading real-time radio frequency data of the corresponding RFID tag by using the tag reader, and transmitting the data to the construction terminal for display; Step 43: synchronously processing all the real-time radio frequency data to obtain synchronous data of the construction area, and transmitting the synchronous data and the construction information to the smart construction site platform for display.

7. The RFID data transmission method for high altitude construction environments of claim 4, wherein, The step 223 comprises: calculating a free loss distance corresponding to each of the RFID tags according to formula (5); （5） wherein, represents a free loss distance corresponding to the kth RFID tag, represents an ideal transmission distance corresponding to the kth RFID tag, represents a data generation frequency corresponding to the kth RFID tag, represents a constant light speed; calculating a specified distance standard corresponding to each of the RFID tags according to formula (6); （6） wherein, represents a preset transmission ratio.

8. The RFID data transmission method for high altitude construction environments of claim 1, wherein, Further comprising: calculating a channel utilization rate corresponding to each of the time limits by using formula (7); （7） represents a channel utilization ratio corresponding to the u-th time limit, represents a tag value average arrival rate corresponding to the u-th time limit.

9. An RFID data transmission system for high altitude construction environments, characterized by, Comprising: a survey adjustment module, configured to survey environmental information of a construction area, adjust a frequency band of an RFID antenna by using the environmental information, and determine a plurality of data reading positions of the construction area according to the environmental information; an interference elimination module, configured to configure a corresponding RFID tag for each of the data reading positions, and perform anti-interference processing on each of the RFID tags; a data reading module, configured to read real-time radio frequency data generated by each of the RFID tags by using the RFID antenna, and construct construction information of the construction area according to the real-time radio frequency data; a transmission execution module, configured to establish a data transmission scheme according to construction requirements, transmit each of the real-time radio frequency data to a corresponding construction terminal for display, and transmit all the real-time radio frequency data and the construction information to a smart construction site platform for display; The interference elimination module respectively configures a corresponding RFID tag for each of the data reading positions, and performs anti-interference processing on each of the RFID tags, which comprises: constructing a position distribution map of the data reading positions in the construction area, obtaining a data occurrence frequency corresponding to each of the data reading positions, and configuring a corresponding RFID tag with an identification frequency band for each of the data reading positions based on the data occurrence frequency; analyzing a transmission distance difference between an actual transmission distance and an ideal transmission distance corresponding to each of the RFID tags, and screening a target RFID tag whose transmission distance difference does not satisfy a specified distance standard; discretely processing a transmission cycle corresponding to each of the target RFID tags to obtain a plurality of time limits corresponding to each of the RFID tags, respectively counting a plurality of tag values corresponding to each of the time limits, and finding a target time limit whose channel utilization rate is higher than a standard utilization rate; performing source tracing on each of the tag values corresponding to the target time limit to obtain a target RFID tag corresponding to each of the tag values, respectively finding a blank time limit corresponding to each of the target RFID tags, distributing the plurality of tag values corresponding to the target time limit to the blank time limit, and obtaining an adjusted transmission cycle corresponding to each of the target RFID tags.

Images