RFID read / write antenna dynamic detection device and dynamic detection method
By setting up multiple sets of RFID read and write antennas in the RFID scanning and detection device and driving them to move synchronously with the cargo, the problem of low detection efficiency caused by the fixed RFID read and write antenna in the prior art is solved, and the RFID read and write antenna is realized and The cargo always maintains the optimal inspection position, which improves inspection efficiency and accuracy.
Patent Information
- Application Number
- CN201910522382.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-06-17
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2039-06-17
AI Technical Summary
The existing RFID scanning and detection equipment is fixed due to the fixed RFID read and write antenna, which causes the positional relationship between the cargo and the antenna when passing through the detection channel, and cannot always be maintained in the optimal detection position, resulting in low detection efficiency.
Design a dynamic detection device for RFID read and write antennas. By setting up an RFID read and write antenna on the inner wall of the detection device, it moves synchronously with the cargo, so that it is always in the optimal detection position. Multiple groups of RFID read and write antennas are used to distribute them on the detection channel. The lower, left and right directions are located, and the antenna and the cargo are driven to keep moving in synchronization with the cargo through the driving mechanism.
The detection efficiency and accuracy of RFID read and write antennas and goods are improved, so that RFID read and write antennas are always within the optimal detection angle range, improving detection efficiency and accuracy.
Smart Images
Figure CN110135213B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a scanning detection device, in particular to a RFID read-write antenna dynamic detection device. Background Art
[0002] With the continuous development of the manufacturing industry, the output of goods has increased significantly. The method of scanning and detecting goods one by one can no longer meet the needs of production because it will cause a large backlog of goods. Therefore, in order to improve the detection efficiency, a scanning and detection device using RFID technology has appeared on the market. Before work, the staff attaches an RFID tag to each piece of goods to be detected, and then places the goods with RFID tags on the conveying channel of the scanning and detection equipment. The conveying device transports these goods to the detection station of the scanning and detection equipment. At this time, the RFID read-write antenna set in the scanning and detection equipment generates electromagnetic waves of a specific frequency and sends them out through spatial coupling. When the RFID tag on the goods reaches the detection range, the RFID tag will receive the electromagnetic wave signal and return the electromagnetic wave signal to the RFID read-write antenna through backscatter coupling. The RFID read-write antenna receives and identifies the electromagnetic wave signal returned by the RFID tag, thereby obtaining specific information about the goods. The above-mentioned scanning and detection equipment can simultaneously realize the scanning and detection of multiple pieces of goods, thereby improving work efficiency.
[0003] In the process of detecting the RFID tags on the goods by the existing scanning and detection equipment, the RFID read-write antenna is usually fixed, and the goods and the RFID tags on the goods are driven through the scanning channel by the conveying device set in the scanning and detection equipment. In this process, when the goods move to a certain position or a certain distance range, the detection effect of the RFID read-write antenna is the best, and this position is the best detection position of the RFID read-write antenna. However, in the existing scanning and detection equipment, since the RFID antenna remains stationary, the position relationship between the goods and the RFID read-write antenna is constantly changing during the process of the goods passing through the detection channel. Even if it can be in the best detection position for a certain period of time, since this time is very short, the RFID read-write antenna and the goods cannot always remain in the best detection position, so that the detection efficiency of the RFID read-write antenna is not high. Summary of the invention
[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an RFID read-write antenna dynamic detection device, which can achieve synchronous movement with the goods, so that the goods and the RFID read-write antenna are always in the optimal detection position state, thereby improving the detection efficiency.
[0005] Another object of the present invention is to provide a method for dynamic detection of an RFID read / write antenna.
[0006] The technical solution of the present invention to solve the above technical problems is:
[0007] A RFID read / write antenna dynamic detection device comprises an RFID read / write antenna arranged in a detection box of an RFID detection device and a driving mechanism for driving the RFID read / write antenna to move synchronously with goods along a conveying direction parallel to the RFID detection device, wherein the RFID read / write antenna is arranged on an inner wall of the RFID detection device, and the center of the goods coincides with an optimal detection position of the RFID read / write antenna; under the drive of the driving mechanism, the center of the goods remains coincident with the optimal detection position of the RFID read / write antenna, and the goods and the RFID read / write antenna move synchronously.
[0008] Preferably, the RFID read-write antennas are in multiple groups, and each group of RFID read-write antennas is composed of several RFID read-write antennas; the multiple groups of RFID read-write antennas are distributed in two or more of the four directions of up, down, left and right in the detection channel of the detection box, and each direction is provided with a group of RFID read-write antennas; the detection channel in the detection box is evenly divided into multiple detection areas along the conveying direction, and the number of the detection areas is consistent with the number of groups of RFID read-write antennas; wherein each group of RFID read-write antennas is responsible for the dynamic detection of goods arriving at one of the detection areas, the moving travels of the multiple groups of RFID read-write antennas are connected end to end, and each group of RFID read-write antennas is driven by a driving mechanism.
[0009] Preferably, RFID read / write antennas are provided at the upper, lower, left and right positions of the detection channel.
[0010] Preferably, the optimal detection position of the RFID read / write antenna is located on a plane 20-35 cm away from the RFID antenna and parallel to the conveying direction of the goods, preferably 30 cm.
[0011] Preferably, there are four groups of RFID read-write antennas, and the four groups of RFID read-write antennas are distributed on the top, bottom and two side walls of the detection box, wherein the RFID read-write antenna located at the top of the detection box is the first RFID read-write antenna, the RFID read-write antenna located at the bottom of the detection box is the second RFID read-write antenna, and the RFID read-write antennas located on the two side walls of the detection box are the third RFID read-write antenna and the fourth RFID read-write antenna.
[0012] Preferably, the detection channel in the detection box is evenly divided into four detection areas along the conveying direction, namely: a first detection area, a second detection area, a third detection area and a fourth detection area; wherein, the first RFID read-write antenna is responsible for dynamic detection of goods arriving at the detection area in the first detection area; the second RFID read-write antenna is responsible for dynamic detection of goods arriving at the detection area in the second detection area; the third RFID read-write antenna is responsible for dynamic detection of goods arriving at the detection area in the third detection area; and the fourth RFID read-write antenna is responsible for dynamic detection of goods arriving at the detection area in the fourth detection area.
[0013] Preferably, the driving mechanism comprises a cylinder, a cylinder body of the cylinder is mounted on the detection box, and a piston rod of the cylinder is connected to the RFID read-write antenna.
[0014] A method for dynamic detection of RFID read / write antennas, comprising the following steps:
[0015] (1) The conveying device conveys the goods into the detection box, and the shielding door of the detection box is closed;
[0016] (2) The conveying device drives the goods to continue to move along the detection channel of the detection box. When the center of the goods coincides with the optimal detection position of the RFID read / write antenna in the detection area, the driving mechanism drives the RFID read / write antenna to move, and the movement speed is consistent with the movement speed of the goods;
[0017] (3) When the goods move to the end of the detection channel of the detection box, the shielding door of the detection box opens, the goods leave the detection box, and the detection of the goods is completed.
[0018] (4) The driving mechanism drives the RFID read / write antenna back to the initial position and repeats the above steps (1) to (3) until all goods have been scanned and detected.
[0019] Preferably, in step (2), after the conveying device drives the goods to move to the first detection area, when the center of the goods coincides with the optimal detection position of the first RFID read / write antenna in the first detection area, the driving mechanism in the first detection area drives the first RFID read / write antenna to move synchronously with the goods until the goods enter the second detection area;
[0020] After the goods enter the second detection area, when the center of the goods coincides with the optimal detection position of the second RFID read / write antenna in the second detection area, the driving mechanism in the second detection area drives the second RFID read / write antenna to move synchronously with the goods until the goods enter the third detection area;
[0021] After the goods enter the third detection area, when the center of the goods coincides with the optimal detection position of the third RFID read / write antenna in the third detection area, the driving mechanism in the third detection area drives the third RFID read / write antenna to move synchronously with the goods until the goods enter the fourth detection area;
[0022] After the goods enter the fourth detection area, when the center of the goods coincides with the optimal detection position of the fourth RFID read-write antenna in the fourth detection area, the driving mechanism in the fourth detection area drives the fourth RFID read-write antenna and the goods to move synchronously until the goods enter the end of the fourth detection area, that is, the goods move to the end of the detection channel of the detection box.
[0023] Compared with the prior art, the present invention has the following beneficial effects:
[0024] The RFID reader / writer antenna dynamic detection device of the present invention drives the RFID reader / writer antenna to move so that the RFID reader / writer antenna and the goods can move synchronously, so that the RFID reader / writer antenna and the goods are always kept within the optimal detection angle range, thereby improving the detection efficiency and detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a three-dimensional structural schematic diagram of a specific implementation of the RFID read / write antenna dynamic detection device of the present invention.
[0026] Figure 2 is an expanded view of the detection box.
[0027] Figure 3 It is a side view of the detection box.
[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the dynamic detection antenna and driving mechanism. DETAILED DESCRIPTION
[0029] The present invention is further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.
[0030] See also Figure 1-Figure 4 The RFID read / write antenna dynamic detection device of the present invention comprises an RFID read / write antenna 2 arranged in a detection box 1 of an RFID detection device and a driving mechanism 3 for driving the RFID read / write antenna 2 to move synchronously with the goods along a conveying direction parallel to the RFID detection device.
[0031] In which, the RFID read-write antenna 2 is arranged on the inner wall of the RFID detection device, and the center of the goods coincides with the optimal detection position of the RFID read-write antenna 2; under the drive of the driving mechanism 3, the center of the goods remains coincident with the optimal detection position of the RFID read-write antenna 2, and the goods and the RFID read-write antenna 2 move synchronously.
[0032] See also Figure 1-Figure 4 , the RFID read / write antenna 2 is a plurality of groups, each group of RFID read / write antenna 2 is composed of a plurality of RFID read / write antenna 2; the plurality of RFID read / write antenna 2 is distributed in two or more of the four directions of upper, lower, left and right in the detection channel of the detection box 1, and each direction is provided with a group of RFID read / write antenna 2; along the direction of the goods conveying in the detection channel, the moving strokes of the plurality of RFID read / write antenna 2 are connected end to end. By setting the plurality of RFID read / write antenna 2 in different directions, the advantages brought are: (1) the conveying stroke of the goods in the detection channel is divided into sub-strokes with which different groups of RFID read / write antenna 2 move synchronously, that is, each group of RFID read / write antenna 2 is responsible for a sub-stroke, so that the moving stroke of a single group of RFID read / write antenna 2 will not be too large, which is not only convenient for setting the driving mechanism 3 (for example, when the driving mechanism 3 is composed of a cylinder, it is difficult to make a single group of RFID read / write antenna 2 move throughout the entire conveying stroke in the detection channel), but also the return stroke of each group of RFID read / write antenna 2 The time is shortened, and preparations can be made quickly for the inspection of the next box of goods, thereby improving efficiency; (2) In actual inspection, in order to improve the inspection efficiency, the cartons for storing goods are generally made into cubes or rectangular shapes. Therefore, by setting RFID read-write antennas 2 in multiple positions of the upper, lower, left and right four directions of the inspection channel of the inspection box 1, the RFID tags on the goods can be detected from different directions, and the optimal detection positions of the RFID read-write antennas 2 in each direction coincide with the center of the goods, thereby further improving the inspection efficiency and inspection accuracy and avoiding missed inspections.
[0033] See also Figure 1-Figure 4 , the RFID detection device in this embodiment has RFID read / write antennas 2 at the upper, lower, left and right positions of the detection channel. This can further improve the efficiency and accuracy of cargo detection.
[0034] See also Figure 1-Figure 4, the detection channel in the detection box 1 is evenly divided into multiple detection areas along the conveying direction, and the number of the detection areas is consistent with the number of groups of RFID read-write antennas 2; wherein each group of RFID read-write antennas 2 is responsible for dynamic detection of goods arriving at one of the detection areas. Since the detection channel in the detection box 1 is evenly divided into multiple detection areas along the conveying direction, the travel of the goods in each detection area is the same. For example, if the detection channel in the detection box 1 is evenly divided into four detection areas along the conveying direction, the travel of the goods in each detection area is one-fourth of the total travel, so that the return time of the RFID read-write antenna 2 in each detection area can be reduced to one-fourth, thereby reducing the working interval of the entire RFID detection equipment to one-fourth of that when only a single group of RFID read-write antennas 2 is set, thereby improving the detection efficiency.
[0035] The RFID read / write antenna 2 uses an 8DB standard antenna. The optimal detection position of the RFID read / write antenna 2 is obtained through the following six groups of experimental data (i.e., Experiments 1 to 7):
[0036] Experiment 1: The power of the 8DB standard antenna used in this experiment is 17.5w. The distance between the center of the goods and the RFID read / write antenna 2 is 5-50cm. The RFID tag on the goods uses a 9662H3 tag. There are 500 RFID tags in the entire goods. The time taken by the RFID read / write antenna to detect all the RFID tags on the goods and the number of RFID tags on the goods detected by the RFID read / write antenna 2 within 3s are collected respectively. Among them, the number of RFID tags on the goods detected by the RFID read / write antenna 2 within 3s is tested five times, and the data of the five experiments are collected, namely Experiment 1, Experiment 2, Experiment 3, Experiment 4 and Experiment 5. The specific data are as follows:
[0037]
[0038] It can be seen from the above table that when the center of the cargo is 30 cm away from the RFID read-write antenna, the time taken by the RFID read-write antenna to read 500 RFID tags on the cargo is the shortest, which is 6.0 s. In addition, the number of RFID tags on the cargo detected by the RFID read-write antenna within the limited time of 3 s is also the largest in Experiments 1 to 5, which are 455, 465, 454, 450 and 450, respectively. Therefore, the best detection position of the RFID read-write antenna 2 is on a plane 30 cm away from the RFID read-write antenna and parallel to the conveying direction of the cargo, that is, the distance between the center of the cargo and the center of the RFID read-write antenna 2 is 30 cm.
[0039] Experiment 2: The difference between this experiment and Experiment 1 is that the power of RFID read / write antenna 2 is changed to 18.5w, and the other conditions remain unchanged. The specific data are as follows:
[0040]
[0041] It can be seen from the above table that when the center of the cargo is 30 cm away from the RFID read-write antenna, the time taken by the RFID read-write antenna to read 500 RFID tags on the cargo is the shortest, which is 7.0 s. Among the numbers of RFID tags on the cargo detected by the RFID read-write antenna within the limited time of 3 s, S=30 cm is 499, 499, 499, 499 and 499 in the five groups of experiments respectively. Although the data in Experiments 1, 2, 3 and 5 are the same as the experimental data when S=25 cm and S=35 cm, in Experiment 4, the number of RFID tags detected within 3 s in S=30 cm is 499, which is greater than 498 in S=25 cm and S=35 cm. Therefore, the best detection position of the RFID read-write antenna 2 is 30 cm away from the RFID read-write antenna and on a plane parallel to the conveying direction of the cargo, that is, the distance between the center of the cargo and the center of the RFID read-write antenna 2 is 30 cm.
[0042] Experiment 3: The difference between this experiment and Experiment 1 is that the power of RFID read / write antenna 2 is changed to 19.5w, and the other conditions remain unchanged. The specific data are as follows:
[0043]
[0044] It can be seen from the above table that when the center of the goods is 30 cm away from the RFID read-write antenna, the time T taken by the RFID read-write antenna to read 500 RFID tags on the goods is 4.0s, second only to 2.4s when S=35cm; and among the numbers of RFID tags on the goods detected by the RFID read-write antenna within the limited time of 3s, S=30cm was 499, 499, 499, 499 and 499 in the five groups of experiments respectively, which is also second only to 500, 500, 500, 500 and 500 when S=35cm.
[0045] Experiment 4: The difference between this experiment and Experiment 1 is that the power of RFID read / write antenna 2 is changed to 20.5w, and the other conditions remain unchanged. The specific data are as follows:
[0046]
[0047]
[0048] It can be seen from the above table that when the distance between the center of the goods and the RFID read-write antenna 2 is S=30cm, the time T taken by the RFID read-write antenna 2 to read 500 RFID tags on the goods is 2.3s; and among the numbers of RFID tags on the goods detected by the RFID read-write antenna 2 within the limited time of 3s, S=30cm is 500, 500, 500, 500 and 500 in the five groups of experiments, which are the same as 500, 500, 500, 500, 500 and 500 when S=35cm. However, when S=30cm, the time taken to read all the RFID tags on the goods is T=2.3s, while when S=35cm, the time taken by the RFID read-write antenna 2 to read all the RFID tags on the goods is T=2.4s. Therefore, the detection effect when S=30cm is better than that when S=35cm.
[0049] Experiment 5: The difference between this experiment and Experiment 1 is that the power of RFID read / write antenna 2 is changed to 21.5w, and the other conditions remain unchanged. The specific data are as follows:
[0050]
[0051] It can be seen from the above table that although the number of RFID tags on the goods detected by the RFID reading and writing antenna within the limited time of 3s is 500, 500, 500, 500 and 500 respectively in the five groups of experiments from S=5cm to S=35cm, when S=30cm, the time spent to read all the RFID tags on the goods is the shortest, which is 1.5s. Therefore, the detection effect is best when S=30cm.
[0052] Experiment 6: The difference between this experiment and Experiment 1 is that the power of RFID read / write antenna 2 is changed to 22.5w, and the other conditions remain unchanged. The specific data are as follows:
[0053]
[0054] It can be seen from the above table that although the number of RFID tags on the goods detected by the RFID reading and writing antenna within the limited time of 3s is 500, 500, 500, 500 and 500 respectively in the five groups of experiments from S=5cm to S=35cm, when S=30cm, the time spent to read all the RFID tags on the goods is the shortest, which is 1.5s. Therefore, the detection effect is best when S=30cm.
[0055] Experiment 7: The difference between this experiment and Experiment 1 is that the power of RFID read / write antenna 2 is changed to 23.5w, and the other conditions remain unchanged. The specific data are as follows:
[0056]
[0057] It can be seen from the above table that although the number of RFID tags on the goods detected by the RFID reading and writing antenna within the limited time of 3s is 500, 500, 500, 500 and 500 respectively in the five groups of experiments from S=5cm to S=35cm, when S=30cm, the time spent to read all the RFID tags on the goods is the shortest, which is 1.5s. Therefore, the detection effect is best when S=30cm.
[0058] Combining the above experiments 1 to 7, it can be concluded that the best detection position of the RFID reader / writer antenna 2 is 30 cm away from the RFID reader / writer antenna and on a plane parallel to the conveying direction of the goods.
[0059] In addition, for RFID read / write antennas of other specifications (such as 4BD, 12BD, 16BD, 24BD, etc.), there will also be corresponding optimal detection positions, which can be detected by referring to the above experimental method to set the position relationship between the cargo center and the RFID read / write antenna 2.
[0060] See also Figure 1-Figure 4 , the RFID read-write antenna 2 is four groups, each group of RFID read-write antenna 2 is driven by a driving mechanism 3; the four groups of RFID read-write antenna 2 are distributed on the top, bottom and two side walls of the detection box 1, wherein the RFID read-write antenna 2 located at the top of the detection box 1 is the first RFID read-write antenna, the RFID read-write antenna 2 located at the bottom of the detection box 1 is the second RFID read-write antenna, and the RFID read-write antenna 2 located on the two side walls of the detection box 1 is the third RFID read-write antenna and the fourth RFID read-write antenna. By setting four groups of RFID read-write antennas 2, and the four groups of RFID read-write antennas 2 are respectively set on the top, bottom and two side walls of the detection box 1, the RFID tags on each of the goods stored in the carton can be detected, thereby improving the detection accuracy.
[0061] See also Figure 1-Figure 4, the detection channel in the detection box 1 is evenly divided into four detection areas along the conveying direction, namely: the first detection area 1-1, the second detection area 1-2, the fourth detection area 1-31-3 and the fourth detection area 1-41-4; wherein, the first RFID read-write antenna is responsible for the dynamic detection of the goods arriving in the first detection area 1-1; the second RFID read-write antenna is responsible for the dynamic detection of the goods arriving in the second detection area 1-2; the third RFID read-write antenna is responsible for the dynamic detection of the goods arriving in the fourth detection area 1-3; the fourth RFID read-write antenna is responsible for the dynamic detection of the goods arriving in the fourth detection area 1-4. Its purpose is to shorten the time for the RFID read-write antenna 2 to return to the initial position after detecting the goods, which is one-fourth of the time for the RFID read-write antenna 2 to return to the initial position after detecting the goods when the detection channel is divided into one detection area, so that the time spent on cargo detection can be reduced, thereby improving the detection efficiency.
[0062] See also Figure 1-Figure 4 The driving mechanism 3 includes a cylinder, the cylinder body of the cylinder is installed on the detection box 1, and the piston rod of the cylinder is connected to the RFID read-write antenna 2. The cylinder drives the RFID read-write antenna 2 to move, thereby realizing dynamic scanning of the RFID tag on the goods. In addition to the above method, the driving mechanism 3 can also be a combination of a motor and a screw transmission mechanism.
[0063] See also Figure 1-Figure 4 The driving mechanism 3 also includes a guiding mechanism for guiding the movement of the RFID read / write antenna 2. The guiding mechanism can be a slider rail mechanism.
[0064] See also Figure 1-Figure 4 The working principle of the RFID read-write antenna dynamic detection device of the present invention is:
[0065] Usually, the goods to be inspected are packed in cartons, which are filled with individual goods, each of which is affixed with an RFID tag. When working, after the goods enter the inspection box 1, the shielding door of the inspection box 1 is closed, and the RFID read-write antenna 2 starts to detect the RFID tag on the goods, thereby reading the information in the RFID tag. The signal of the RFID read-write antenna 2 radiates into the inspection box 1. The optimal detection position of the RFID read-write antenna 2 is located on a plane that is a certain distance away from the RFID read-write antenna 2 and parallel to the conveying direction of the goods. By aligning the center of the carton with the plane, it is ensured that the center of the goods remains coincident with the optimal detection position of the RFID read-write antenna 2. The specific process is: in the process of the conveying device driving the goods through the inspection box 1, the center of the goods remains coincident with the plane where the optimal detection position of the RFID read-write antenna 2 is located. When the center of the goods reaches the optimal detection position of the RFID read-write antenna 2, the driving mechanism 3 drives the RFID read-write antenna 2 to move synchronously with the goods. During the transportation process, the center of the goods remains coincident with the optimal detection position of the RFID read-write antenna 2, thereby greatly improving the detection efficiency and detection accuracy.
[0066] See also Figure 1-Figure 4 The RFID reader / writer antenna dynamic detection method of the present invention comprises the following steps:
[0067] (1) The conveying device conveys the goods into the detection box 1, and the shielding door of the detection box 1 is closed;
[0068] (2) The conveying device drives the goods to continue to move along the detection channel of the detection box 1. When the center of the goods coincides with the optimal detection position of the RFID read / write antenna in the detection area, the driving mechanism 3 drives the RFID read / write antenna 2 to move, and the movement speed is consistent with the movement speed of the goods;
[0069] (3) When the goods move to the end of the detection channel of the detection box 1, the shielding door of the detection box 1 opens, the goods leave the detection box 1, and the detection of the goods is completed.
[0070] (4) The driving mechanism 3 drives the RFID read / write antenna 2 back to the initial position and repeats the above steps (1) to (3) until all goods have been scanned and detected.
[0071] In step (2), after the conveying device drives the goods to move to the first detection area 1-1, when the center of the goods coincides with the optimal detection position of the first RFID read / write antenna in the first detection area 1-1, the driving mechanism 3 in the first detection area 1-1 drives the first RFID read / write antenna to move synchronously with the goods until the goods enter the second detection area 1-2;
[0072] After the goods enter the second detection area 1-2, when the center of the goods coincides with the optimal detection position of the second RFID read-write antenna in the second detection area 1-2, the driving mechanism 3 in the second detection area 1-2 drives the second RFID read-write antenna to move synchronously with the goods until the goods enter the fourth detection area 1-3;
[0073] When the center of the cargo coincides with the optimal detection position of the third RFID read / write antenna in the third detection area 1-3, the driving mechanism 3 in the third detection area 1-3 drives the third RFID read / write antenna to move synchronously with the cargo until the cargo enters the fourth detection area 1-4;
[0074] When the center of the cargo coincides with the optimal detection position of the fourth RFID read-write antenna in the fourth detection area 1-4, the driving mechanism 3 in the fourth detection area 1-4 drives the fourth RFID read-write antenna to move synchronously with the cargo until the cargo enters the end of the fourth detection area 1-4, that is, the cargo moves to the end of the detection channel of the detection box 1.
[0075] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.
Claims
1. A RFID read / write antenna dynamic detection method implemented by using an RFID read / write antenna dynamic detection device, characterized in that: The RFID read / write antenna dynamic detection device includes an RFID read / write antenna arranged in a detection box of an RFID detection device and a driving mechanism for driving the RFID read / write antenna to move synchronously with the goods along a conveying direction parallel to the RFID detection device, wherein the RFID read / write antenna is arranged on an inner wall of the RFID detection device, and the center of the goods coincides with the optimal detection position of the RFID read / write antenna; under the drive of the driving mechanism, the center of the goods remains coincident with the optimal detection position of the RFID read / write antenna, and the goods move synchronously with the RFID read / write antenna; The RFID read / write antennas are multiple groups, and each group of RFID read / write antennas is composed of several RFID read / write antennas; the multiple groups of RFID read / write antennas are distributed in two or more of the four directions of upper, lower, left and right in the detection channel of the detection box, and each direction is provided with a group of RFID read / write antennas; the detection channel in the detection box is evenly divided into multiple detection areas along the conveying direction, and the number of the detection areas is consistent with the number of groups of RFID read / write antennas; wherein each group of RFID read / write antennas is responsible for dynamic detection of goods arriving at one of the detection areas, and the moving travels of the multiple groups of RFID read / write antennas are connected end to end, and each group of RFID read / write antennas is driven by a driving mechanism; There are four groups of RFID read-write antennas, which are distributed on the top, bottom and two side walls of the detection box, wherein the RFID read-write antenna located at the top of the detection box is the first RFID read-write antenna, the RFID read-write antenna located at the bottom of the detection box is the second RFID read-write antenna, and the RFID read-write antennas located on the two side walls of the detection box are the third RFID read-write antenna and the fourth RFID read-write antenna; The detection channel in the detection box is evenly divided into four detection areas along the conveying direction, namely: the first detection area, the second detection area, the third detection area and the fourth detection area; wherein the first RFID read-write antenna is responsible for the dynamic detection of goods arriving at the detection area in the first detection area; the second RFID read-write antenna is responsible for the dynamic detection of goods arriving at the detection area in the second detection area; the third RFID read-write antenna is responsible for the dynamic detection of goods arriving at the detection area in the third detection area; the fourth RFID read-write antenna is responsible for the dynamic detection of goods arriving at the detection area in the fourth detection area; The RFID read / write antenna dynamic detection method comprises the following steps: (1) The conveying device conveys the goods into the detection box, and the shielding door of the detection box is closed; (2) The conveying device drives the goods to continue to move along the detection channel of the detection box. When the center of the goods coincides with the optimal detection position of the RFID read-write antenna in the detection area, the driving mechanism drives the RFID read-write antenna to move, and the movement speed is consistent with the movement speed of the goods; wherein, after the conveying device drives the goods to move to the first detection area, when the center of the goods coincides with the optimal detection position of the first RFID read-write antenna in the first detection area, the driving mechanism in the first detection area drives the first RFID read-write antenna to move synchronously with the goods until the goods enter the second detection area; After the goods enter the second detection area, when the center of the goods coincides with the optimal detection position of the second RFID read / write antenna in the second detection area, the driving mechanism in the second detection area drives the second RFID read / write antenna to move synchronously with the goods until the goods enter the third detection area; After the goods enter the third detection area, when the center of the goods coincides with the optimal detection position of the third RFID read / write antenna in the third detection area, the driving mechanism in the third detection area drives the third RFID read / write antenna to move synchronously with the goods until the goods enter the fourth detection area; After the goods enter the fourth detection area, when the center of the goods coincides with the optimal detection position of the fourth RFID read-write antenna in the fourth detection area, the driving mechanism in the fourth detection area drives the fourth RFID read-write antenna to move synchronously with the goods until the goods enter the end of the fourth detection area, that is, the goods move to the end of the detection channel of the detection box; (3) When the goods move to the end of the detection channel of the detection box, the shielding door of the detection box opens, the goods leave the detection box, and the detection of the goods ends; (4) The driving mechanism drives the RFID read / write antenna back to the initial position and repeats the above (1)-(3) until all the goods have been scanned and detected.
2. The RFID read / write antenna dynamic detection method according to claim 1, characterized in that: RFID read / write antennas are provided at the upper, lower, left and right positions of the detection channel.
3. The RFID read / write antenna dynamic detection method according to claim 1, characterized in that: The RFID read / write antenna is an 8DB standard antenna, and the best detection position of the RFID read / write antenna is located on a plane 20-35 cm away from the RFID read / write antenna and parallel to the conveying direction of the goods.
4. The RFID read / write antenna dynamic detection method according to claim 1, characterized in that: The optimal detection position of the RFID read / write antenna is located on a plane 30 cm away from the RFID read / write antenna and parallel to the conveying direction of the goods.
5. The RFID read / write antenna dynamic detection method according to claim 1, characterized in that: The driving mechanism comprises a cylinder, a cylinder body of the cylinder is mounted on the detection box, and a piston rod of the cylinder is connected to the RFID reading and writing antenna.