CN106295444B - Low-power anti-interference antenna activation source - Google Patents
Low-power anti-interference antenna activation source Download PDFInfo
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- CN106295444B CN106295444B CN201610642973.4A CN201610642973A CN106295444B CN 106295444 B CN106295444 B CN 106295444B CN 201610642973 A CN201610642973 A CN 201610642973A CN 106295444 B CN106295444 B CN 106295444B
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06K7/10356—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 using a plurality of antennas, e.g. configurations including means to resolve interference between the plurality of antennas
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06K7/10198—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 setting parameters for the interrogator, e.g. programming parameters and operating modes
- G06K7/10217—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 setting parameters for the interrogator, e.g. programming parameters and operating modes parameter settings controlling the transmission power of the interrogator
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- Computer Vision & Pattern Recognition (AREA)
- General Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Selective Calling Equipment (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Near-Field Transmission Systems (AREA)
- Lock And Its Accessories (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a low-power anti-interference antenna activation source.A high-frequency wireless module of the low-power anti-interference antenna activation source wirelessly realizes the configuration of a working mode of a main control circuit; the main control circuit generates a low-frequency activation signal containing the low-frequency antenna ID code, the antenna activation source ID code and the working mode information through a low-frequency radio frequency circuit according to the set working mode; the antenna activation source also comprises a signal indicator light connected to the main control circuit and used for displaying the working state of the antenna activation source, and the antenna activation source also comprises a power supply conversion circuit used for supplying electric energy to the antenna activation source. The invention realizes accurate positioning and adjustable identification distance, reduces power consumption, prolongs the service life of the battery and can operate without failure for a long time.
Description
Technical Field
The invention relates to the field of wireless radio frequency identification, in particular to a low-power anti-interference antenna activation source.
Background
In recent years, the internet of things is a new technology which people generally pay attention to, and a radio frequency identification technology is rapidly developed as a key technology of the internet of things. The management of complex environments such as cells, mining areas, roads and the like is highly valued by relevant departments of the country, but disputes and even accidents caused by negligence of management are still frequently caused, and unnecessary loss of benefits of many individuals and countries is caused. How to strengthen management measures and how to accurately, real-timely and quickly master the personnel state of non-local communities, the personnel distribution and flow conditions of mining areas, the road charging efficiency and the efficient operation of emergency rescue in residential communities is an urgent problem to be solved by relevant departments in China. Changing the backward management mode and realizing the modernization and informatization of management are important ways for fundamentally solving the problems.
At present, low-frequency active sources used in practice are all single antennas, the transmission distance of the active sources is usually about 5 meters, the signal range is small, the tags are easy to activate, the low-frequency antennas have certain directivity, and low-frequency signal fields transmitted by the low-frequency antennas are not circular but elliptical, so that the signal intensities of the tags in different directions are inconsistent, even no signal exists, accurate positioning cannot be achieved, and much inconvenience and trouble are brought to management. Meanwhile, because the existing low-frequency activation source is a single antenna, people must arrange more devices to cover the same area, and the signals of the devices must be ensured not to be crossed during installation and construction, otherwise, the signals interfere with each other to generate a signal blind area, so that the device cost is increased, the construction difficulty is increased, and the competitiveness is very low after the multi-antenna low-frequency activation source is released.
Disclosure of Invention
The invention provides a low-power anti-interference antenna activation source, a radio frequency identification system increases the coverage range of low-frequency signals, improves the stability of the low-frequency signals, solves the interference problem among all antennas, can realize accurate positioning and adjustable identification distance, solves the trouble that a single antenna activation source has small signal coverage range, a plurality of card readers read the same electronic tag simultaneously and are unstable, reduces power consumption, prolongs the service life of a battery, and can operate without faults for a long time.
In order to achieve the purpose, the invention adopts the technical scheme that: a low power, interference-free antenna activation source, comprising: the memory is used for storing the ID codes of each low-frequency antenna and the ID codes of the antenna activation source;
the low-frequency radio-frequency circuit comprises an AND gate and a power MOS tube driving module which are connected in series, the AND gate is used for modulating a data signal from a main control circuit to a 125KHz carrier signal to form a low-frequency activation signal, and the power MOS tube driving module is used for performing power amplification on the low-frequency activation signal to generate a low-frequency radio-frequency signal;
the power control circuit is positioned between the low-frequency radio frequency circuit and the main control circuit and is used for adjusting the transmitting power of the low-frequency antenna;
one end of the first dial switch is connected to the main control circuit, and the other end of the first dial switch is connected to a second dial switch, an RS485 communication circuit and a high-frequency wireless module which are used for setting a working mode, wherein the working mode comprises the effective number of the antennas, the working sequence of each antenna, the transmitting power of each antenna and the working duration of each antenna; the other ends of the second dial switch, the RS485 communication circuit and the high-frequency wireless module are connected to the main control circuit, the RS485 communication circuit realizes the configuration of the working mode of the main control circuit through signals from a network, and the high-frequency wireless module realizes the configuration of the working mode of the main control circuit through wireless;
the main control circuit generates a low-frequency activation signal containing the low-frequency antenna ID code, the antenna activation source ID code and the working mode information through a low-frequency radio frequency circuit according to the set working mode;
the antenna activation source also comprises a signal indicator light connected to the main control circuit and used for displaying the working state of the antenna activation source, and the antenna activation source also comprises a power supply conversion circuit used for supplying electric energy to the antenna activation source.
The technical scheme of the further improvement of the technical scheme is as follows:
1. in the above scheme, the frequency of the low-frequency signal is 125 KHz.
2. In the above scheme, the frequency of the high frequency carrier is 2.45 GHz.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. the low-power anti-interference antenna activation source increases the coverage range of low-frequency signals, improves the stability of the low-frequency signals, solves the interference problem among all antennas, can realize accurate positioning and adjustable identification distance, solves the problems that the signal coverage range of a single antenna activation source is small, a plurality of card readers read the same electronic tag at the same time and are unstable, reduces power consumption, prolongs the service life of a battery and can operate without faults for a long time.
2. The low-power anti-interference antenna activation source has the advantages that due to the adoption of the multi-antenna circuit design, the signal coverage range is wide, the signal stability is high, the working frequency is 125KHz, the realization is easy, the circuit is simple, the cost is low, and the popularization and the application are convenient; the transmitting power is adjusted by adopting various modes, so that the installation and construction are more flexible and more convenient.
3. The low-power anti-interference antenna activation source combines the low-frequency circuit and the high-frequency circuit, and the wired communication circuit and the wireless communication circuit together, so that the working performance is more reliable, the use is more convenient, and the user can accept the use more easily.
4. The low-power anti-interference antenna activation source is designed in a mode of adjustable transmitting power, so that the signal coverage area of the low-power anti-interference antenna activation source is adjustable, and the low-power anti-interference antenna activation source can adapt to more different application environments.
5. The low-power anti-interference antenna activation source integrates the low-frequency circuit and the high-frequency circuit into a tag system, so that the power consumption is lower, the awakening distance can be accurately controlled within the range of 0.5-7 m, and the data communication distance is not influenced.
6. The low-power anti-interference antenna activation source adopts a unique mode in the application software programming, so that the use is very simple, a user only needs to carry the antenna activation source, and when entering a wake-up area, the system can automatically process related information.
Drawings
FIG. 1(a) is a schematic diagram of a multi-antenna active source structure according to the present invention;
FIG. 1(b) is a schematic view of a portion of the structure of FIG. 1 (a);
FIG. 2 is a schematic diagram of a low frequency RF circuit and a low frequency antenna circuit according to the present invention;
FIG. 3 is an electrical schematic diagram of a power control circuit in the RFID system of the present invention;
FIG. 4 is a flowchart of a main process of activating the antenna in the RFID system of the present invention;
FIG. 5 is a flowchart of an antenna activation source control subroutine in the RFID system of the present invention;
FIG. 6 is a flowchart of a high frequency wireless data communication subroutine in the RFID system of the present invention;
FIG. 7 is a flow chart of a sub-program of an RS485 communication circuit in the RFID system of the present invention.
In the above drawings: 1. a signal indicator light; 2. a power conversion circuit; 3. a high-frequency wireless module; 4. a memory; 5. a low frequency radio frequency circuit; 51. an AND gate; 52. a power MOS tube driving module; 6. a low frequency antenna; 7. a master control circuit; 8. a power control circuit; 9. a first dial switch; 10. a second toggle switch; 11. RS485 communication circuit.
Detailed Description
The invention is further described with reference to the following figures and examples:
example (b): a low power, interference-free antenna activation source, comprising: a memory 4 for storing each low frequency antenna ID code and antenna activation source ID code;
the low-frequency radio-frequency circuit comprises a low-frequency radio-frequency circuit 5 and a plurality of low-frequency antennas 6 connected with the low-frequency radio-frequency circuit 5, wherein the low-frequency radio-frequency circuit 5 comprises an AND gate 51 and a power MOS tube driving module 52 which are connected in series, the AND gate 51 is used for modulating a data signal from a main control circuit to a 125KHz carrier signal to form a low-frequency activation signal, and the power MOS tube driving module 52 is used for performing power amplification on the low-frequency activation signal to generate a low-frequency radio-frequency;
the power control circuit 8 is positioned between the low-frequency radio frequency circuit 5 and the main control circuit 7, and the power control circuit 8 is used for adjusting the transmitting power of the low-frequency antenna 6;
a first dial switch 9, one end of the first dial switch 9 is connected to the main control circuit 7, and the other end of the first dial switch 9 is connected to a second dial switch 10, an RS485 communication circuit 11 and a high-frequency wireless module 3, which are used for setting working modes, wherein the working modes comprise the number of effective antennas, the working sequence of each antenna, the transmitting power of each antenna and the working duration of each antenna; the other ends of the second dial switch 10, the RS485 communication circuit 11 and the high-frequency wireless module 3 are connected to the main control circuit 7, the RS485 communication circuit 11 configures the working mode of the main control circuit 7 through a signal from a network, and the high-frequency wireless module 3 configures the working mode of the main control circuit 7 wirelessly;
the main control circuit 7 generates a low-frequency activation signal containing the low-frequency antenna ID code, the antenna activation source ID code and the working mode information through the low-frequency radio frequency circuit 5 according to the set working mode and the low-frequency antenna ID code and the antenna activation source ID code from the memory 4;
the antenna activation source further comprises a signal indicator lamp 1 connected to the main control circuit 7 for displaying the operating state of the antenna activation source.
The antenna activation source further comprises a power conversion circuit 2 for supplying power to the antenna activation source.
The frequency of the low-frequency signal is 125KHz, and the frequency of the high-frequency carrier is 2.45 GHz.
The high-frequency antenna is placed on the circuit board, and data during communication comprise the number of a low-frequency signal source, the strength of the low-frequency signal, the ID number of the high-frequency antenna and battery power information. The low-frequency antenna can be a one-dimensional antenna or a 3D antenna, the one-dimensional antenna has a directional effect, and the 3D antenna is not limited by direction. The signal indicator light is a light emitting diode. The system power supply battery is in the form of a soft package lithium battery. The battery electric quantity detection method is resistance voltage division detection.
The distance between the double-frequency tag and the low-frequency signal source can be accurately judged according to the low-frequency signal intensity value, so that the communication distance of the low-frequency part can be accurately controlled to be 0.5-7 m, and indirectly, the communication distance of the high-frequency part is also controlled.
After the multi-antenna low-frequency activation source is tested and leaves a factory, and after a working mode is installed and set, a low-frequency activation signal is continuously transmitted outwards in the set working mode, wherein the low-frequency activation signal comprises the ID code of each antenna and the ID code of equipment. When a carrier carrying the dual-frequency electronic tag enters or passes through a signal coverage area, the signal is received, and then the tag analyzes the signal and sends some information of the tag to a card reader in a high-frequency mode. This information includes the following: an ID of the multi-antenna activation source, an ID of each antenna within the activation source, a signal strength at the time the signal is received, an amount of power of the tag, an ID number of the tag, other information (temperature, humidity, pressure, gravity, velocity, etc.), and the like. The card reader adds the ID of the card reader to the information and then uploads the final information to the upper-level management module. The management module may take many forms, such as: 1. the device can be a field application device such as a controller, and the device can process information on the field and make corresponding management action to serve people. 2. The software may be a user application software running in a remote management center, and after processing the information, the software may archive or prompt or continue to provide data for other devices, etc. to guide corresponding staff to do further work.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (3)
1. A low power, interference-free antenna activation source, comprising: the method comprises the following steps: a memory (4) for storing each low frequency antenna ID code and antenna activation source ID code;
the low-frequency radio frequency circuit comprises a low-frequency radio frequency circuit (5) and a plurality of low-frequency antennas (6) connected with the low-frequency radio frequency circuit (5), wherein the low-frequency radio frequency circuit (5) comprises an AND gate (51) and a power MOS (metal oxide semiconductor) tube driving module (52) which are connected in series, the AND gate (51) is used for modulating a data signal from a main control circuit to a 125KHz carrier signal to form a low-frequency activation signal, and the power MOS tube driving module (52) is used for performing power amplification on the low-frequency activation signal to generate a low-frequency;
the power control circuit (8) is positioned between the low-frequency radio frequency circuit (5) and the main control circuit (7), and the power control circuit (8) is used for adjusting the transmitting power of the low-frequency antenna (6);
one end of the first dial switch (9) is connected to the main control circuit (7), and the other end of the first dial switch (9) is connected to a second dial switch (10) used for setting a working mode, an RS485 communication circuit (11) and a high-frequency wireless module (3), wherein the working mode comprises the number of effective antennas, the working sequence of each antenna, the transmitting power of each antenna and the working duration of each antenna; the other ends of the second dial switch (10), the RS485 communication circuit (11) and the high-frequency wireless module (3) are connected to the main control circuit (7), the RS485 communication circuit (11) realizes the configuration of the working mode of the main control circuit (7) through signals from a network, and the high-frequency wireless module (3) realizes the configuration of the working mode of the main control circuit (7) through wireless;
the main control circuit (7) generates a low-frequency activation signal containing the low-frequency antenna ID code, the antenna activation source ID code and the working mode information through the low-frequency radio frequency circuit (5) according to the set working mode and the low-frequency antenna ID code and the antenna activation source ID code from the memory (4);
the antenna activation source also comprises a signal indicator lamp (1) connected to the main control circuit (7) and used for displaying the working state of the antenna activation source, and the antenna activation source also comprises a power supply conversion circuit (2) used for supplying electric energy to the antenna activation source.
2. The low power, interference-free antenna activation source of claim 1, wherein: the frequency of the low-frequency signal is 125 KHz.
3. The low power, interference-free antenna activation source of claim 1, wherein: the frequency of the high frequency carrier is 2.45 GHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642973.4A CN106295444B (en) | 2013-11-27 | 2013-11-27 | Low-power anti-interference antenna activation source |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642973.4A CN106295444B (en) | 2013-11-27 | 2013-11-27 | Low-power anti-interference antenna activation source |
| CN201310612973.6A CN103646228B (en) | 2013-11-27 | 2013-11-27 | Multiple Antenna Activation Sources for RFID |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310612973.6A Division CN103646228B (en) | 2013-11-27 | 2013-11-27 | Multiple Antenna Activation Sources for RFID |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106295444A CN106295444A (en) | 2017-01-04 |
| CN106295444B true CN106295444B (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610642973.4A Expired - Fee Related CN106295444B (en) | 2013-11-27 | 2013-11-27 | Low-power anti-interference antenna activation source |
| CN201610643217.3A Expired - Fee Related CN106295446B (en) | 2013-11-27 | 2013-11-27 | Multiple antennas activate source with accurate positioning function |
| CN201610642975.3A Expired - Fee Related CN106295445B (en) | 2013-11-27 | 2013-11-27 | Radio frequency antenna activation source with dynamically adjustable identification distance |
| CN201610641593.9A Expired - Fee Related CN106446734B (en) | 2013-11-27 | 2013-11-27 | Radio-frequency antenna activate source for Internet of Things |
| CN201310612973.6A Expired - Fee Related CN103646228B (en) | 2013-11-27 | 2013-11-27 | Multiple Antenna Activation Sources for RFID |
Family Applications After (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610643217.3A Expired - Fee Related CN106295446B (en) | 2013-11-27 | 2013-11-27 | Multiple antennas activate source with accurate positioning function |
| CN201610642975.3A Expired - Fee Related CN106295445B (en) | 2013-11-27 | 2013-11-27 | Radio frequency antenna activation source with dynamically adjustable identification distance |
| CN201610641593.9A Expired - Fee Related CN106446734B (en) | 2013-11-27 | 2013-11-27 | Radio-frequency antenna activate source for Internet of Things |
| CN201310612973.6A Expired - Fee Related CN103646228B (en) | 2013-11-27 | 2013-11-27 | Multiple Antenna Activation Sources for RFID |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106682559B (en) * | 2017-03-02 | 2023-08-08 | 苏州摩比信通智能系统有限公司 | Radio frequency identification reading terminal and radio frequency identification reading success prompting method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202887237U (en) * | 2012-08-27 | 2013-04-17 | 江苏优因特智能科技有限公司 | Radio-frequency-signal controllable activation indicating device |
| CN103164730A (en) * | 2011-12-09 | 2013-06-19 | 苏州木兰电子科技有限公司 | Dual-frequency radio frequency electronic tag |
| CN103218594A (en) * | 2012-11-07 | 2013-07-24 | 无锡成电科大科技发展有限公司 | Radio frequency identification terminal |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090117938A1 (en) * | 2007-11-02 | 2009-05-07 | Broadcom Corporation | Ic for a high frequency communication device with minimal off chip components |
| CN101303744A (en) * | 2008-04-18 | 2008-11-12 | 上海坤锐电子科技有限公司 | Chip for signal amplifier of radio frequency recognition system and signal amplifier thereof |
| JP5146664B2 (en) * | 2008-05-27 | 2013-02-20 | ブラザー工業株式会社 | Wireless tag communication device |
| CN102236805A (en) * | 2010-05-06 | 2011-11-09 | 周林生 | Safety identification system based on technology of Internet of things |
| CN202979050U (en) * | 2012-11-26 | 2013-06-05 | 广东步步高电子工业有限公司 | Radio frequency system for double antenna mobile terminal |
| CN203689531U (en) * | 2013-11-27 | 2014-07-02 | 苏州木兰电子科技有限公司 | Multi-antenna activation source used for radio frequency identification |
-
2013
- 2013-11-27 CN CN201610642973.4A patent/CN106295444B/en not_active Expired - Fee Related
- 2013-11-27 CN CN201610643217.3A patent/CN106295446B/en not_active Expired - Fee Related
- 2013-11-27 CN CN201610642975.3A patent/CN106295445B/en not_active Expired - Fee Related
- 2013-11-27 CN CN201610641593.9A patent/CN106446734B/en not_active Expired - Fee Related
- 2013-11-27 CN CN201310612973.6A patent/CN103646228B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103164730A (en) * | 2011-12-09 | 2013-06-19 | 苏州木兰电子科技有限公司 | Dual-frequency radio frequency electronic tag |
| CN202887237U (en) * | 2012-08-27 | 2013-04-17 | 江苏优因特智能科技有限公司 | Radio-frequency-signal controllable activation indicating device |
| CN103218594A (en) * | 2012-11-07 | 2013-07-24 | 无锡成电科大科技发展有限公司 | Radio frequency identification terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106295446A (en) | 2017-01-04 |
| CN106295445B (en) | 2020-05-22 |
| CN106446734A (en) | 2017-02-22 |
| CN106295445A (en) | 2017-01-04 |
| CN106295444A (en) | 2017-01-04 |
| CN106295446B (en) | 2019-06-18 |
| CN103646228A (en) | 2014-03-19 |
| CN103646228B (en) | 2017-02-08 |
| CN106446734B (en) | 2019-04-23 |
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Granted publication date: 20200522 |