Method and device for radio frequency identification of moving direction of object, and personnel access control system
A radio frequency identification device and radio frequency identification technology, applied in the direction of induction recording carrier, single input port/output port register, instrument, etc., can solve the problems such as the difficulty in judging the moving direction of objects and the inability to read label information smoothly
Inactive Publication Date: 2016-03-23
CHINA STEEL
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[0011] To sum up, when the existing reader reads the label, once it encounters a reading dead angle, it cannot read the label information smoothly, making it very difficult for the existing radio frequency identification system to realize the judgment of the moving direction of the object
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[0071] image 3 A flow chart showing the radio frequency identification method for object moving direction of the present invention. Figure 4 A schematic diagram showing an object, a first radio frequency identification tag and a second radio frequency identification tag in the method of the present invention. Figure 5A A front view showing the distribution of horizontally polarized waves of the first dipole antenna and the second dipole antenna in the method of the present invention. Figure 5B A top view showing the distribution of horizontally polarized waves of the first dipole antenna and the second dipole antenna in the method of the present invention. Please refer to image 3 Step S31, Figure 4 , Figure 5A and Figure 5B , providing an object O, a first radio frequency identification tag 11 and a second radio frequency identification tag 12 . The object O has a first side surface S1 and a second side surface S2, and the second side surface S2 is opposite to th...
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The invention relates to a radio frequency identification method and device for object movement direction and a personnel entry and exit control system. The method includes the following steps: (a) providing an object, first and second radio frequency identification tags, the object has a first side surface and an opposite second side surface, and the first and second radio frequency identification tags respectively have a first side surface and an opposite second side surface. The first and second dipole antennas can generate first and second horizontally polarized waves respectively. The radiation direction of the first horizontally polarized wave is perpendicular to the length direction of the first dipole antenna. The second dipole antenna can generate first and second horizontally polarized waves respectively. The radiation direction of the horizontally polarized wave is perpendicular to the length direction of the second dipole antenna; (b) Set the first and second radio frequency identification tags on the first and second side surfaces of the object, and make the first and second couplers The length direction of the polar antenna is perpendicular to the moving direction of the object; and (c) using at least one radio frequency identification reader to read at least one of the groups composed of the first and second radio frequency identification tags to determine the The actual direction of movement of the object.
Description
technical field [0001] The invention relates to a method and a device for judging the moving direction of an object, in particular to a method and a device for radio frequency identification of the moving direction of an object and a control system for personnel entering and leaving a control area using the device. Background technique [0002] In a general industrial environment, there are many areas or spaces that are highly dangerous. Therefore, in order to prevent industrial safety accidents and ensure the safety of personnel operations, strict management rules will be established for personnel entering and exiting restricted areas, such as: Some kind of training is required, at least two or more people are required to travel together, they can only stay for a period of time each time, and they can only enter after authorization. [0003] Usually the control area covers a wide range, and there are many entrances and exits. For the purpose of control, it has been proposed...
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IPC IPC(8): G06K7/00G07C9/00
Inventor 陈松琳张人伟傅文贵吕庆义
Owner CHINA STEEL