CN112464685A - RFID card reader and system with distance sensing function - Google Patents
RFID card reader and system with distance sensing function Download PDFInfo
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- CN112464685A CN112464685A CN202011398987.9A CN202011398987A CN112464685A CN 112464685 A CN112464685 A CN 112464685A CN 202011398987 A CN202011398987 A CN 202011398987A CN 112464685 A CN112464685 A CN 112464685A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10118—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the sensing being preceded by at least one preliminary step
- G06K7/10148—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the sensing being preceded by at least one preliminary step the step consisting of dynamically tuning the resonant circuit of the interrogation device that is emitting the interrogation signal, e.g. for impedance matching inside of the interrogation device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
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Abstract
The invention discloses an RFID card reader with distance induction and a system; the system comprises a municipal power grid, the municipal power grid is electrically connected with a voltage regulating module and a control module in sequence, the control module is electrically connected with a communication module, an auxiliary module, infrared laser and information processing, the information processing is electrically connected with an RFID card reader and the infrared laser, the RFID card reader is electrically connected with an antenna coil and an antenna in sequence, and the system further comprises the following system operation method: s1, the municipal power grid supplies power to the control module through the voltage regulating module; s2, the control module realizes distance measurement on the RFID label through infrared laser; s3, reading the RFID label by the RFID card reader; s4, analyzing the read information through information processing; s5, the control module realizes the transmission of data information through the communication module; according to the invention, the distance measurement is carried out through the infrared laser, so that the RFID card reader can adjust the radio frequency length, and the advance processing is carried out to reduce the operating pressure of the control module.
Description
Technical Field
The invention belongs to the technical field of RFID card readers, and particularly relates to an RFID card reader with distance sensing and a system.
Background
An RFID reader is an automatic identification device that can read electronic tag data. The RFID is a non-contact automatic identification technology, which automatically identifies a target object and obtains related data through a radio frequency signal, does not need manual intervention in identification work, and can work in various severe environments. The RFID technology can identify high-speed moving objects and can identify a plurality of labels simultaneously, the operation is fast and convenient, and the RFID technology is divided into low-frequency, high-frequency and ultrahigh-frequency card readers according to different label reading frequencies. The RFID card reader needs to be equipped with an RFID antenna to be used together to read the tag information, and the basic working principle of the RFID technology is not complex: after the Tag enters a magnetic field, receiving a radio frequency signal sent by the reader, and sending out product information (Passive Tag, Passive Tag or Passive Tag) stored in the chip by virtue of energy obtained by induced current, or actively sending a signal of a certain frequency (Active Tag, Active Tag or Active Tag); the information is read and decoded by the interpreter and then sent to the central information system for relevant data processing. The rapid rise of radio frequency identification technology (RFID) is both a result of technology development and a manifestation of application needs. Since the 90 s of the last century, a variety of applications around RFID have emerged in large numbers as spring shoots after rain. However, various problems still exist with the various RFID readers on the market.
Such as the RFID reader with distance sensing and system disclosed in CN206178907U, although the ultrasonic ranging module is used for detecting the distance of the goods, firstly the missing detection of the goods is realized, secondly the read electronic tag information and the distance information of the goods are provided, so that an upper computer can respond and process better, without manual detection, realizes full automation of production, reduces labor cost, improves production efficiency, improves controllability of card reading link compared with the traditional card reader, but does not solve the problem that the frequency of the radio frequency cannot be adjusted according to the distance of the actual RFID tag in the prior art, and then realize reading to the RFID label to and can not handle the problem such as the operation burden that increases control module in advance to the information of RFID label, for this reason we propose a RFID card reader and system with distance response.
Disclosure of Invention
The present invention is directed to an RFID card reader with distance sensing and a system thereof, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: an RFID card reader with distance induction comprises a commercial power grid, wherein a voltage regulating module is electrically connected to the commercial power grid, the voltage regulating module is electrically connected with a control module, a communication module and an auxiliary module are electrically connected to the control module, the communication module is in communication connection with an upper computer and mobile equipment, infrared laser and information processing are also electrically connected to the control module, an RFID card reader and infrared laser are electrically connected to the information processing, the infrared laser is electrically connected with the RFID card reader, an antenna coil is electrically connected to the RFID card reader, an antenna is electrically connected to the antenna coil, an RFID tag is identified by the radio frequency of the antenna, and the infrared laser is used for measuring the distance of the RFID tag;
the communication module comprises wireless communication, data communication and wired data communication, the wireless communication is used for carrying out data transmission in a short distance and reducing resource consumption, the limited data communication is used for communicating with an upper computer, and the wireless communication is used for connecting mobile equipment in a long distance;
the information processing comprises information receiving, information detection, information filtering and information decoding, wherein the information receiving is used for receiving the information which is transmitted by the RFID card reader and used for reading the RFID tag, the information detection is used for detecting the length of the data information received by the information receiving, the information filtering is used for receiving clutter and noise in the data information received by the information receiving, and the information decoding is used for decoding and translating the information of the RFID tag;
the RFID card reader comprises a low frequency, a high frequency, an ultrahigh frequency and microwaves, transmits distance information to the RFID card reader after detecting the distance of the RFID label through the infrared laser, and selects the low frequency, the high frequency, the ultrahigh frequency and the microwaves to use according to the distance of the RFID label.
Preferably, the voltage regulation module includes a voltage reduction circuit, a rectification circuit, a voltage stabilizing circuit and a filter circuit, the voltage reduction circuit is used for reducing the high voltage of the utility grid to a low voltage, the rectification circuit is used for converting the alternating voltage of the utility grid to a direct current voltage, the voltage stabilizing circuit is used for stabilizing the voltage within a certain range and then supplying the voltage to the control module for use, and the filter circuit is used for filtering the alternating voltage in the direct current voltage.
Preferably, the auxiliary module comprises an operation indicator light, a micro display screen and a storage module, the indicator light is used for displaying the operation condition of the system, the micro display screen is used for displaying the data information, and the storage module is used for storing the system information.
Preferably, at least two groups of storage modules are arranged, one group of storage modules is a ROM storage module and is used for storing an operation system of the system, and the other group of storage modules is a RAM storage module and is used for storing the RFID tag information.
Preferably, the communication module is provided with a UART communication converter and an RS485 converter, the UART communication converter comprises a UART communication conversion module converted from Ethernet, and the RS485 converter comprises a USB (universal serial bus) converter converted into an RS485 converter.
Preferably, the RFID tag comprises an active type, i.e. self-contained power supply; the other type is a passive type, the RFID reader is not provided with a power supply and is externally powered, and the RFID reader is used for supplying power to the passive type RFID tag.
Preferably, the control module is electrically connected with a clock crystal oscillator circuit and a reset circuit.
The invention also provides an RFID card reader system with distance induction, which comprises the following system operation methods:
s1, the utility grid supplies power to the control module through the voltage regulating module: the voltage of the commercial power grid is controlled and regulated through the voltage regulating module, so that the alternating current high voltage of the commercial power grid can be converted into direct current low voltage, and the control module is powered;
s2, the control module realizes distance measurement on the RFID label through infrared laser: the control module firstly realizes distance measurement on the RFID label through infrared laser, and transmits distance measurement information to the RFID card reader and the control module, and the control module realizes reading on the RFID label through the RFID card reader;
s3, reading the RFID label by the RFID reader: the RFID card reader realizes generation of radio frequency signals through the antenna coil, and the antenna coil transmits radio frequency information through the antenna, so that the radio frequency signals can read the RFID label;
s4, analyzing the read information by information processing: after the RFID card reader reads the information of the RFID label, the information of the RFID label is transmitted to information processing, and the information is transmitted to a control module for storage after being received, detected, filtered and decoded by the information processing;
s5, the control module realizes the transmission of data information through the communication module: after the control module processes the information, the information is transmitted to the upper computer and the mobile device through the communication module, and the information is monitored through the upper computer and the mobile device.
Preferably, the antenna coil in S3 generates radio frequencies of different lengths according to the distance detected by the infrared laser, so as to generate low frequency, high frequency, ultrahigh frequency and microwave, and further read RFID tags of different distances;
preferably, the communication module in S5 performs automatic conversion in different communication connection modes, that is, the UART communication converter and the RS485 converter, so as to implement multiple communication connection modes.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the RFID distance detection method, the distance of the RFID label is effectively detected through the infrared laser, after the infrared laser determines the distance of the RFID label, the infrared laser transmits distance information to the RFDI card reader, and the RFDI card reader adjusts the frequency after determining the distance, so that the RDFI labels with different distances are read.
(2) According to the invention, the information read by the RFID card reader is effectively decoded through information processing, and the information is enhanced, so that the information of the RFID label can be directly transmitted to the control module, the information processing speed of the control module is increased, and the control module can still rapidly process the information when the RFID card reader simultaneously reads a plurality of groups of RFID labels.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic view of the step structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, the present invention provides a technical solution: an RFID card reader with distance induction comprises a commercial power grid, wherein a voltage regulating module is electrically connected to the commercial power grid, the voltage regulating module is electrically connected with a control module, a communication module and an auxiliary module are electrically connected to the control module, the communication module is in communication connection with an upper computer and mobile equipment, infrared laser and information processing are also electrically connected to the control module, an RFID card reader and infrared laser are electrically connected to the information processing, the infrared laser is electrically connected with the RFID card reader, an antenna coil is electrically connected to the RFID card reader, an antenna is electrically connected to the antenna coil, an RFID tag is identified by the radio frequency of the antenna, and the infrared laser is used for measuring the distance of the RFID tag;
the communication module comprises wireless communication, data communication and wired data communication, the wireless communication is used for carrying out data transmission in a short distance and reducing resource consumption, the limited data communication is used for communicating with an upper computer, and the wireless communication is used for connecting mobile equipment in a long distance;
the information processing comprises information receiving, information detection, information filtering and information decoding, wherein the information receiving is used for receiving the information which is transmitted by the RFID card reader and used for reading the RFID tag, the information detection is used for detecting the length of the data information received by the information receiving, the information filtering is used for receiving clutter and noise in the data information received by the information receiving, and the information decoding is used for decoding and translating the information of the RFID tag;
the RFID card reader comprises a low frequency, a high frequency, an ultrahigh frequency and microwaves, transmits distance information to the RFID card reader after detecting the distance of the RFID label through the infrared laser, and selects the low frequency, the high frequency, the ultrahigh frequency and the microwaves to use according to the distance of the RFID label.
In order to implement stable power supply to the system and enable the system to operate normally and stably, in this embodiment, it is preferable that the voltage regulation module includes a voltage reduction circuit, a rectification circuit, a voltage stabilizing circuit, and a filter circuit, the voltage reduction circuit is configured to reduce a high voltage of the utility grid to a low voltage, the rectification circuit is configured to convert an ac voltage of the utility grid to a dc voltage, the voltage stabilizing circuit is configured to stabilize the voltage within a certain range and then supply the voltage to the control module for use, and the filter circuit is configured to filter the ac voltage in the dc voltage.
In order to enable the operation of the system to be more convenient and faster, in this embodiment, it is preferable that the auxiliary module includes an operation indicator lamp, a micro display screen, and a storage module, the indicator lamp is used for displaying the operation condition of the system, the micro display screen is used for displaying data information, and the storage module is used for storing system information.
In order to prevent the storage of the system from being confused, in this embodiment, it is preferable that the storage modules are at least two groups, one group of the storage modules is a ROM storage module and is used for storing an operating system of the system, and the other group of the storage modules is a RAM storage module and is used for storing the RFID tag information.
In order to realize different communication connection modes and realize quick conversion connection, in this embodiment, it is preferable that the communication module is provided with a UART communication converter and an RS485 converter, the UART communication converter converts the ethernet into a UART communication conversion module, and the RS485 converter converts the USB into an RS485 converter.
In order to realize the diversity of the RFID tags, the RFID tags with diversity can be effectively identified, in this embodiment, it is preferable that the RFID tags include an active type, that is, a self-contained power supply; the other type is a passive type, the RFID reader is not provided with a power supply and is externally powered, and the RFID reader is used for supplying power to the passive type RFID tag.
In order to achieve more stable operation of the system and perform reset when the system has an error, in this embodiment, it is preferable that the control module is electrically connected to a clock oscillator circuit and a reset circuit.
An RFID card reader with distance induction further comprises the following system operation method:
s1, the utility grid supplies power to the control module through the voltage regulating module: the voltage of the commercial power grid is controlled and regulated through the voltage regulating module, so that the alternating current high voltage of the commercial power grid can be converted into direct current low voltage, and the control module is powered;
s2, the control module realizes distance measurement on the RFID label through infrared laser: the control module firstly realizes distance measurement on the RFID label through infrared laser, and transmits distance measurement information to the RFID card reader and the control module, and the control module realizes reading on the RFID label through the RFID card reader;
s3, reading the RFID label by the RFID reader: the RFID card reader realizes generation of radio frequency signals through the antenna coil, and the antenna coil transmits radio frequency information through the antenna, so that the radio frequency signals can read the RFID label;
s4, analyzing the read information by information processing: after the RFID card reader reads the information of the RFID label, the information of the RFID label is transmitted to information processing, and the information is transmitted to a control module for storage after being received, detected, filtered and decoded by the information processing;
s5, the control module realizes the transmission of data information through the communication module: after the control module processes the information, the information is transmitted to the upper computer and the mobile device through the communication module, and the information is monitored through the upper computer and the mobile device.
In order to realize the generation of different radio frequencies for the RFID tags at different distances and the reading of the RFID tags, in this embodiment, preferably, the antenna coil in S3 generates radio frequencies with different lengths according to the distance detected by the infrared laser, so as to generate low frequency, high frequency, ultrahigh frequency and microwave, and further realize the reading of the RFID tags at different distances;
in order to implement the diversity of the communication modes and realize the conversion quickly, in this embodiment, it is preferable that the communication module in S5 performs automatic conversion in different communication connection modes, that is, the UART communication converter and the RS485 converter, so as to implement multiple communication connection modes.
The working principle and the using process of the invention are as follows:
firstly, the utility grid supplies power to the control module through the voltage regulating module: the voltage of the commercial power grid is controlled and regulated through the voltage regulating module, so that the alternating current high voltage of the commercial power grid can be converted into direct current low voltage, and the control module is powered;
secondly, the control module realizes distance measurement on the RFID label through infrared laser: the control module firstly realizes distance measurement on the RFID label through infrared laser, and transmits distance measurement information to the RFID card reader and the control module, and the control module realizes reading on the RFID label through the RFID card reader;
thirdly, reading the RFID label by the RFID card reader: the RFID card reader realizes generation of radio frequency signals through the antenna coil, and the antenna coil transmits radio frequency information through the antenna, so that the radio frequency signals can read the RFID label;
and fourthly, analyzing the read information through information processing: after the RFID card reader reads the information of the RFID label, the information of the RFID label is transmitted to information processing, and the information is transmitted to a control module for storage after being received, detected, filtered and decoded by the information processing;
and fifthly, the control module realizes the transmission of data information through the communication module: after the control module processes the information, the information is transmitted to the upper computer and the mobile device through the communication module, and the information is monitored through the upper computer and the mobile device.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a take RFID card reader of distance response, includes the municipal power grid, its characterized in that: the system comprises a commercial power network, a voltage regulation module, a control module, a communication module and an auxiliary module, wherein the commercial power network is electrically connected with the voltage regulation module, the voltage regulation module is electrically connected with the control module, the control module is electrically connected with the communication module and the auxiliary module, the communication module is in communication connection with an upper computer and mobile equipment, the control module is also electrically connected with infrared laser and information processing, the information processing is electrically connected with an RFID card reader and infrared laser, the infrared laser is electrically connected with the RFID card reader, the RFID card reader is electrically connected with an antenna coil, the antenna coil is electrically connected with an antenna, the antenna radio frequency identifies an RFID label, and the infrared laser measures the distance of;
the communication module comprises wireless communication, data communication and wired data communication, the wireless communication is used for carrying out data transmission in a short distance and reducing resource consumption, the limited data communication is used for communicating with an upper computer, and the wireless communication is used for connecting mobile equipment in a long distance;
the information processing comprises information receiving, information detection, information filtering and information decoding, wherein the information receiving is used for receiving the information which is transmitted by the RFID card reader and used for reading the RFID tag, the information detection is used for detecting the length of the data information received by the information receiving, the information filtering is used for receiving clutter and noise in the data information received by the information receiving, and the information decoding is used for decoding and translating the information of the RFID tag;
the RFID card reader comprises a low frequency, a high frequency, an ultrahigh frequency and microwaves, transmits distance information to the RFID card reader after detecting the distance of the RFID label through the infrared laser, and selects the low frequency, the high frequency, the ultrahigh frequency and the microwaves to use according to the distance of the RFID label.
2. The RFID reader with distance sensing of claim 1, wherein: the voltage regulating module comprises a voltage reducing circuit, a rectifying circuit, a voltage stabilizing circuit and a filter circuit, wherein the voltage reducing circuit is used for reducing the high voltage of the commercial power grid into low voltage, the rectifying circuit is used for converting the alternating voltage of the commercial power grid into direct current voltage, the voltage stabilizing circuit is used for stabilizing the voltage within a certain range and then supplying the voltage to the control module for use, and the filter circuit is used for filtering the alternating voltage in the direct current voltage.
3. The RFID reader with distance sensing of claim 1, wherein: the auxiliary module comprises an operation indicator lamp, a micro display screen and a storage module, wherein the indicator lamp is used for displaying the operation condition of the system, the micro display screen is used for displaying data information, and the storage module is used for storing system information.
4. The RFID reader with distance sensing of claim 1, wherein: the RFID tag comprises at least two groups of storage modules, wherein one group of storage modules is a ROM storage module and is used for storing an operation system of the system, and the other group of storage modules is a RAM storage module and is used for storing the RFID tag information.
5. The RFID reader with distance sensing of claim 1, wherein: the communication module is provided with a UART communication converter and an RS485 converter, the UART communication converter converts an Ethernet into a UART communication conversion module, and the RS485 converter converts a USB into an RS485 converter.
6. The RFID reader with distance sensing of claim 1, wherein: the RFID tag comprises an active type, i.e. a self-contained power source; the other type is a passive type, the RFID reader is not provided with a power supply and is externally powered, and the RFID reader is used for supplying power to the passive type RFID tag.
7. The RFID reader with distance sensing of claim 1, wherein: the control module is electrically connected with a clock crystal oscillator circuit and a reset circuit.
8. The RFID reader system with distance sensing of claim 1, wherein: the method also comprises the following system operation method:
s1, the utility grid supplies power to the control module through the voltage regulating module: the voltage of the commercial power grid is controlled and regulated through the voltage regulating module, so that the alternating current high voltage of the commercial power grid can be converted into direct current low voltage, and the control module is powered;
s2, the control module realizes distance measurement on the RFID label through infrared laser: the control module firstly realizes distance measurement on the RFID label through infrared laser, and transmits distance measurement information to the RFID card reader and the control module, and the control module realizes reading on the RFID label through the RFID card reader;
s3, reading the RFID label by the RFID reader: the RFID card reader realizes generation of radio frequency signals through the antenna coil, and the antenna coil transmits radio frequency information through the antenna, so that the radio frequency signals can read the RFID label;
s4, analyzing the read information by information processing: after the RFID card reader reads the information of the RFID label, the information of the RFID label is transmitted to information processing, and the information is transmitted to a control module for storage after being received, detected, filtered and decoded by the information processing;
s5, the control module realizes the transmission of data information through the communication module: after the control module processes the information, the information is transmitted to the upper computer and the mobile device through the communication module, and the information is monitored through the upper computer and the mobile device.
9. The RFID reader system with distance sensing of claim 8, wherein: the antenna coil in the S3 generates radio frequencies with different lengths according to the distance detected by the infrared laser, so that low frequency, high frequency, ultrahigh frequency and microwave are generated, and the RFID tags with different distances are read.
10. The RFID reader system with distance sensing of claim 8, wherein: and the communication module in the S5 performs automatic conversion in different communication connection modes, namely a UART communication converter and an RS485 converter, so that various communication connection modes are realized.
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| CN202011398987.9A CN112464685A (en) | 2020-12-01 | 2020-12-01 | RFID card reader and system with distance sensing function |
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| CN202011398987.9A CN112464685A (en) | 2020-12-01 | 2020-12-01 | RFID card reader and system with distance sensing function |
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| CN208444305U (en) * | 2018-08-15 | 2019-01-29 | 云教（北京）科技有限公司 | Insertion type perceives radio frequency reading device certainly |
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