CN109978098B - Bridge fitting identification system based on RFID - Google Patents
Bridge fitting identification system based on RFID Download PDFInfo
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- CN109978098B CN109978098B CN201910253658.6A CN201910253658A CN109978098B CN 109978098 B CN109978098 B CN 109978098B CN 201910253658 A CN201910253658 A CN 201910253658A CN 109978098 B CN109978098 B CN 109978098B
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- 238000000034 method Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 5
- 238000005303 weighing Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 238000004886 process control Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
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Abstract
The invention discloses a bridge fitting identification system based on RFID, which comprises a reader module and a passive tag module. The reader-writer module is embedded in the on-line walking robot, and the passive tag module is fixedly arranged on the bridge fitting. The reader-writer module is used for wirelessly transmitting a preset high-frequency signal combination, the high-frequency signal combination comprises a plurality of high-frequency signals with sequentially increasing transmitting power, and each high-frequency signal has a corresponding effective coverage distance. According to the bridge fitting identification system based on the RFID, the robot walking on the line is in front of the bridge, and as long as the reader-writer can read the label information and the handshake is successful, the robot can know that a corresponding obstacle exists in front, so that the robot executes corresponding operation to complete the bridge crossing. The size and the shape of the obstacle do not need to be judged, and the gap bridge action can be completed without measuring the accurate distance between the robot and the tower head in real time.
Description
Technical Field
The invention belongs to the technical field of high-voltage transmission line communication, and particularly relates to a bridge fitting identification system based on RFID.
Background
RFID, i.e., radio frequency identification, is a technology for completing automatic identification by radio communication electromagnetic waves having a certain frequency. The RFID is a radio application technology, which locates and tracks a target in a non-contact state and reads and writes data of target information. RFID systems have found widespread use in a number of industries. For example, in the field of warehouse logistics, tracking management of a supply chain can be realized; the real-time management and consumption guidance of commodities can be realized in the supermarket retail industry; intelligent scheduling, entrance guard and charging management can be realized in the traffic field; the material allocation and anti-counterfeiting confidentiality can be realized in the military field; the source tracing and safety supervision of the production area can be realized in the fields of food and medicine; the functions of positioning, tracking and the like can be realized in the animal husbandry and the mining industry.
The utility model discloses a be CN206656792U, the utility model patent of main part name for integrated RFID automatic weighing settlement platform, its technical scheme discloses "be provided with weighing sensor 2 on the board 1 be provided with unpowered tray 3 of weighing on the weighing sensor 2 just be located on the board 1 one side of the unpowered tray 3 of weighing still is provided with RFID card reading antenna 4 still be provided with control box 5 and display device 6 on the board 1, weighing sensor 2 RFID card reading antenna 4 reaches display device 6 all with the control box 5 electricity is connected. A material frame detection sensor 7 is further arranged on the plate of the RFID card reading antenna 4, and the material frame detection sensor 7 is in signal connection with the control box 5. And the supporting platform of the weighing unpowered tray 3 inclines from the feeding direction to the discharging direction. The support platform consists of several rollers 8. A baffle 9 is arranged at the discharge end of the supporting platform. And a guardrail 10 is further arranged on the machine table 1 and positioned on the outer side of the weighing unpowered tray 3. Supporting legs 11' are arranged below the machine table 1.
However, in the above utility model patent, the RFID may be interfered in practical application in the environment and object containing metal and moisture.
Disclosure of Invention
Aiming at the condition of the prior art, the invention overcomes the defects and provides a bridge fitting identification system based on RFID.
The invention adopts the following technical scheme that the RFID-based gap bridge hardware identification system is used for roughly measuring the distance between a walking robot on a line and a gap bridge hardware, and comprises the following steps:
a reader module embedded in the on-line walking robot;
the passive tag module is fixedly arranged on the bridge fitting;
the reader-writer module is used for wirelessly transmitting a preset high-frequency signal combination, the high-frequency signal combination comprises a plurality of high-frequency signals with sequentially increasing transmitting power, and each high-frequency signal has a corresponding effective coverage distance;
the passive tag module is used for receiving the high-frequency signal and wirelessly transmitting the tag information which is arranged in the passive tag module back;
the reader-writer module is also used for receiving the label information and judging to obtain a high-frequency signal with minimum transmitting power according to the label information.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the reader module is further configured to obtain a high frequency signal of a second minimum transmission power according to the tag signal, and the reader module obtains a distance interval between the reader and the passive tag module by converting the high frequency signal of the minimum transmission power and the high frequency signal of the second minimum transmission power.
According to the above technical solution, as a further preferred technical solution of the above technical solution, the reader module is configured to dock a motherboard and a patch board externally disposed on the reader module, and the reader module includes a data transmission interface, a control unit, a radio frequency module, a reader antenna, and a power module, where:
the data transmission interface is electrically connected with the mainboard and establishes communication connection;
the data transmission interface, the control unit, the radio frequency module and the reader-writer antenna are electrically connected in sequence and establish bidirectional communication connection;
the power module is electrically connected with the adapter plate.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the reader antenna is configured to transmit electromagnetic energy to activate a tag chip located in the passive tag module, and receive tag information wirelessly transmitted back from the tag chip.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the radio frequency module is used for transmitting and receiving a high frequency signal.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the control unit is configured to control the transceiving of the radio frequency module, and encrypt and decrypt a communication process between the radio frequency module and the tag chip.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the data transmission interface is used for establishing a connection channel between the control unit and an application layer of the motherboard.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the passive tag module includes a tag chip and a passive tag antenna, and the tag chip antenna are powered by a high-frequency signal.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the passive tag antenna is used for wirelessly transmitting tag information.
The invention discloses a bridge fitting identification system based on RFID, which has the beneficial effects that a robot walking on a line can know that a corresponding barrier exists in front as long as a reader-writer can read label information and the handshake is successful before the bridge fitting, so that the robot executes corresponding operation to complete the bridge fitting. The size and the shape of the obstacle do not need to be judged, and the gap bridge action can be completed without measuring the accurate distance between the robot and the tower head in real time.
Drawings
FIG. 1 is a process control schematic of one embodiment of the present invention.
Fig. 2 is a system block diagram of a reader module of one embodiment of the invention.
Fig. 3 is a system block diagram of a wireless tag module of one embodiment of the present invention.
The reference numerals include: 10-a main board; 20-an adapter plate; 100-a reader module; 110-a data transmission interface; 120-a control unit; 130-a radio frequency module; 140-reader antenna; 150-a power module; 200-a passive tag module; 210-a passive tag chip; 220-passive tag antenna.
Detailed Description
The invention discloses a bridge fitting identification system based on RFID, and the specific implementation mode of the invention is further described in combination with the preferred embodiment.
Referring to fig. 1 to 3 of the drawings, fig. 1 illustrates a process control manner of an RFID-based bridge fitting identification system, fig. 2 illustrates a related structure of a reader module of the RFID-based bridge fitting identification system, and fig. 3 illustrates a related structure of a passive tag module of the RFID-based bridge fitting identification system.
Preferred embodiments.
Preferably, referring to fig. 2 and 3 of the drawings, the RFID-based bridge fitting identification system for roughly measuring a distance between a walking robot on a line and a bridge fitting includes:
a reader module 100, said reader module 100 being embedded in a (mobile) on-line walking robot (on-line robot/robot, not shown in the figure);
the passive tag module 200, wherein the passive tag module 200 is fixedly arranged on a bridge fitting (not shown in the figure);
the reader-writer module 100 is configured to wirelessly transmit a preset high-frequency signal combination, where the high-frequency signal combination includes a plurality of high-frequency signals with sequentially increasing transmission powers, and each high-frequency signal has a corresponding (and determined) effective coverage distance;
the passive tag module 200 is configured to receive the high-frequency signal and wirelessly transmit tag information (using the high-frequency signal as a working power supply) back to the passive tag module 100;
the reader module 100 is further configured to receive the tag information and determine to obtain a high-frequency signal with a minimum transmission power (capable of successful handshaking) according to the tag information.
It should be noted that the reader/writer module 100 can also obtain the effective coverage distance corresponding to the high-frequency signal according to the high-frequency signal conversion of the minimum transmitting power, that is, obtain the distance between the reader/writer 100 (on-line walking robot) and the passive tag module 200 (bridge fitting).
Further, since the effective coverage distances actually corresponding to the high-frequency signals of the high-frequency signal combination are discrete values (too dense arrangement between the discrete values will result in unacceptable material cost or generate additional unnecessary interference), in other words, the effective coverage distances corresponding to the adjacent high-frequency signals form corresponding distance intervals. In addition, the technical problems to be solved by the patent application do not need to judge the size and the shape of the obstacle, and do not need to accurately measure the high-precision distance between the robot and the bridge fitting in real time, so that the patent application can just judge which distance interval the distance between the robot and the bridge fitting falls into, and the purpose of rough obstacle avoidance of the invention can be achieved.
Further, the reader module 100 is further configured to determine and obtain a high-frequency signal of a second minimum transmission power (capable of successfully handshaking) according to the tag signal, and the reader module 100 converts the high-frequency signal of the minimum transmission power and the high-frequency signal of the second minimum transmission power to obtain a distance interval between the reader 100 (the on-line robot) and the passive tag module 200 (the bridge-crossing hardware).
Further, the reader module 100 is configured to interface with a motherboard 10 and an interposer 20 externally disposed on the reader module 100, where the reader module 100 includes a data transmission interface 110, a control unit 120, a radio frequency module 130, a reader antenna 140, and a power module 150, where:
the data transmission interface 110 is electrically connected with the main board 10 and establishes communication connection;
the data transmission interface 110, the control unit 120, the rf module 130, and the reader antenna 140 are electrically connected in sequence and establish a bidirectional communication connection;
the power module 150 is electrically connected to the adapter board 20 and provides operating power to other electrical devices such as the rf module 130.
Further, the reader antenna 140 is used for emitting electromagnetic energy to activate the tag chip 210 of the passive tag module 200, and simultaneously receiving the tag information transmitted back from the tag chip 210 in a wireless manner.
Further, the rf module 130 is used for transmitting and receiving high frequency signals.
Further, the control unit 120 is configured to control transceiving of the rf module 130, and encrypt and decrypt a communication process between the rf module 130 and the tag chip 210.
Further, the data transmission interface 110 is used for establishing a connection channel between the control unit 120 and an application layer of the motherboard 10.
Further, the passive tag module 200 includes a tag chip 210 and a passive tag antenna 220, and the tag chip 210 and the tag chip antenna 220 are powered by a high frequency signal.
Further, the passive tag antenna 220 is used for wireless transmission (return) of tag information.
According to the above preferred embodiment, the RFID-based bridge fitting identification system disclosed in the present patent application refers to fig. 1 of the accompanying drawings, and the process control thereof is set forth as follows: the robot that walks on line normally traveles to the 3 meters department of fitting A of passing a bridge, and the passive label 1 of fitting A end is read to the read-write machine, then feeds back to the mainboard, and the mainboard control walking motor slows down, and the low-speed traveles forward. And in the process of approaching the A end, the reader-writer continuously sends out signals to update the approximate distance between the robot and the hardware fitting. When the robot starts to bridge through the bridge fitting and travels for a certain distance, the reader-writer reads the information of the passive tag 2 at the end B of the fitting and updates the approximate distance between the robot and the passive tag in real time. After passing through the end B of the hardware fitting, the robot finishes passing a bridge, still drives forwards to a position 3 meters away from the end B of the hardware fitting according to low speed, at the moment, the passive tag 2 exceeds the reading range of the reader-writer, and the two are disconnected in a handshaking mode. The reader-writer does not receive the signal of the label 2 and feeds back the signal to the main board, and the main board controls the walking motor to accelerate and run at normal speed.
Specifically, the RFID reader is mounted on the on-line robot to continuously send out a signal, and the passive tag is mounted on the bridge fitting. When the robot is about to pass a bridge and approach the hardware fitting, the reader-writer can read the information of the label at a certain distance, so as to prompt the robot to carry out a bridge passing action at a certain distance in front of the robot. After the gap bridge is finished, the robot can not receive the passive tag information when running for a certain distance, so that the completion of the gap bridge is prompted.
The approximate judgment mode of the distance between the reader-writer of the RFID and the passive tag is realized by adjusting the transmitting power of the reader-writer. For example, the minimum transmitting power F1, F2 and F3 of the reader-writer required when the distance between the reader-writer and the passive tag is 1 meter, 2 meters and 3 meters is determined, then the reader-writer sequentially transmits 3 powers, when the distance between the reader-writer and the passive tag is 3 meters, only the transmitting power F3 enables the reader-writer to handshake, when the distance between the reader-writer and the passive tag is 2 meters, F2 and F3 enable the reader-writer to handshake, and when the distance between the reader-writer and the passive tag is 1 meter, F1, F2 and F3 enable the reader-writer to handshake. This sum distance can be determined approximately by determining the minimum power of the transmit power handshake.
According to the preferred embodiment, the gap bridge hardware identification system based on the RFID disclosed by the patent application of the invention provides a mechanism for easily identifying objects for the on-line walking robot, so as to realize the gap bridge action of the robot, and the beneficial effects are explained as follows: the on-line walking robot is in front of the gap bridge, as long as the reader-writer can read the label information, the handshake is successful, the corresponding barrier in front can be known, and therefore the robot executes corresponding operation to complete the gap bridge. The size and the shape of the obstacle do not need to be judged, and the gap bridge action can be completed without measuring the accurate distance between the robot and the tower head in real time.
It will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.
Claims (8)
1. A bridge fitting identification system based on RFID is used for roughly measuring the distance between a walking robot on a line and a bridge fitting, and is characterized by comprising:
a reader module embedded in the on-line walking robot;
the passive tag module is fixedly arranged on the bridge fitting;
the reader-writer module is used for wirelessly transmitting a preset high-frequency signal combination, the high-frequency signal combination comprises a plurality of high-frequency signals with sequentially increasing transmitting power, each high-frequency signal has a corresponding effective coverage distance, and the effective coverage distance actually corresponding to each high-frequency signal of the high-frequency signal combination is a discrete value;
the passive tag module is used for receiving the high-frequency signal and wirelessly transmitting the tag information which is arranged in the passive tag module back;
the reader-writer module is also used for receiving the label information and judging to obtain a high-frequency signal of the minimum transmitting power according to the label information;
the reader-writer module is also used for judging and obtaining a high-frequency signal of second minimum transmitting power according to the tag signal, and the reader-writer module is used for converting the high-frequency signal of the minimum transmitting power and the high-frequency signal of the second minimum transmitting power to obtain a distance interval between the reader-writer and the passive tag module;
the distance judgment method of the reader-writer module and the passive tag module is realized by adjusting the transmitting power of the reader-writer module, firstly, the transmitting power F1, F2 and F3 which are the minimum of the required reader-writer when the reader-writer module and the passive tag module are at a first distance, a second distance and a third distance are determined, then, the reader-writer module sequentially sends 3 powers, when the reader-writer module and the passive tag module are at the third distance, only the transmitting power of F3 can enable the reader-writer module to handshake, when the reader-writer module and the passive tag module are at the second distance, F2 and F3 can enable the reader-writer module to handshake, when the reader-writer module and the passive tag module are at the first distance, F1, F2 and F3 can enable the reader-writer module to handshake, and the distance between the reader-writer module and the passive tag module can be judged by judging the minimum power of the transmitting power of the handshake.
2. The bridge fitting identification system based on RFID of claim 1, wherein the reader module is configured to interface with a motherboard and a patch panel externally disposed on the reader module, and the reader module includes a data transmission interface, a control unit, a radio frequency module, a reader antenna, and a power module, wherein:
the data transmission interface is electrically connected with the mainboard and establishes communication connection;
the data transmission interface, the control unit, the radio frequency module and the reader-writer antenna are electrically connected in sequence and establish bidirectional communication connection;
the power module is electrically connected with the adapter plate.
3. The RFID-based bridge fitting identification system of claim 2, wherein the reader antenna is configured to emit electromagnetic energy to activate a tag chip located in the passive tag module, and to receive tag information wirelessly transmitted back from the tag chip.
4. The RFID-based bridge fitting identification system according to claim 2, wherein the radio frequency module is used for transmission and reception of high frequency signals.
5. The RFID-based bridge fitting identification system according to claim 2, wherein the control unit is configured to control transceiving of the radio frequency module, and encrypt and decrypt a communication process between the radio frequency module and the tag chip.
6. The RFID-based bridge fitting identification system according to claim 2, wherein the data transmission interface is configured to establish a connection channel between the control unit and an application layer of the motherboard.
7. The RFID-based bridge fitting identification system of claim 1, wherein the passive tag module comprises a tag chip and a passive tag antenna, the tag chip and tag chip antenna being powered by a high frequency signal.
8. The RFID-based bridge fitting identification system of claim 7, wherein the passive tag antenna is configured to wirelessly transmit tag information.
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| CN201910253658.6A CN109978098B (en) | 2019-03-30 | 2019-03-30 | Bridge fitting identification system based on RFID |
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| CN201910253658.6A CN109978098B (en) | 2019-03-30 | 2019-03-30 | Bridge fitting identification system based on RFID |
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| CN116749658B (en) * | 2023-08-21 | 2023-11-14 | 武汉精臣智慧标识科技有限公司 | RFID label printer and read-write method thereof |
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