Method for estimating number of RFID devices
A technology of equipment and quantity, which is applied in the estimation of the quantity of RFID equipment, card reading equipment and computer-readable storage media, can solve the problems of poor applicability and low accuracy, and achieve the effect of overcoming technical defects
Active Publication Date: 2019-08-09
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Problems solved by technology
However, the current method of estimating the number of RFID devices is to manually determine the value of an RFID device based on experience. This way of artificially setting the number of RFID devices is often affected by human factors, and its accuracy is low and its applicability is poor.
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Embodiment Construction
[0035] The core of the application is to provide a method for estimating the number of RFID devices, which can accurately and efficiently estimate the number of RFID devices; another core of the application is to provide a card reading device and a computer-readable storage medium, both of which have the above technical effects .
[0036] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection range of the present application.
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The invention discloses a method for estimating the number of RFID devices, and the method comprises the steps that a card reading device determines a reference value, and sends the reference value toeach RFID device, so that the RFID device generates any random number in an estimation interval with the reference value as an upper limit; the card reading device polls each integer in the estimation interval and sends the integer to each RFID equipment, so that the RFID equipment responds to the received integer according to the random number generated by the card reading equipment; and the card reading device carries out parameter statistics according to the response message of the RFID equipment, and calculates the number of the RFID equipment according to the statistical parameter and the reference value after traversing each integer of the pre-estimation interval. The estimation method can effectively overcome the defect of manually setting the number of the RFID devices, and can accurately and efficiently estimate the number of the RFID devices. The invention further discloses card reading equipment and a computer readable storage medium which both have the above technical effects.
Description
technical field [0001] The present application relates to the technical field of the Internet of Things, and in particular, to a method for estimating the number of RFID devices; it also relates to a card reading device and a computer-readable storage medium. Background technique [0002] With the continuous development of the Internet of Things, RFID devices are widely used. The card reader can only select a specific RFID device for communication each time. In practical applications, there are usually multiple RFID devices in the radio frequency field of the card reader. At this time, the card reader receives the data sent by each RFID device, resulting in The data sent by each RFID device collides, so that the card reader device cannot receive the data correctly and effectively. Therefore, the card reader device needs to select one of the RFID devices to communicate with to prevent collision. At present, there are various and different anti-collision schemes, such as spa...
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Login to View More IPC IPC(8): G06K7/10
CPCG06K7/10198
Inventor 杨祎巍匡晓云林伟斌
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD