CN111169505A - Railway detection system based on RFID - Google Patents
Railway detection system based on RFID Download PDFInfo
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- CN111169505A CN111169505A CN202010026950.7A CN202010026950A CN111169505A CN 111169505 A CN111169505 A CN 111169505A CN 202010026950 A CN202010026950 A CN 202010026950A CN 111169505 A CN111169505 A CN 111169505A
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- fastener
- radio frequency
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention relates to a railway detection system based on RFID, which comprises a fastener fastening state sensor, a radio frequency antenna, a reader, terminal equipment and a cloud server, wherein the fastener fastening state sensor is connected with the radio frequency antenna; the fastener fastening state sensor is used for sending radio frequency identification information to the radio frequency antenna, and the radio frequency identification information comprises position information and a pressure value of the fastener; the radio frequency antenna sends the received radio frequency identification information to a reader; the reader transmits the radio frequency identification information to the cloud server, the cloud server analyzes the received pressure value of the fastener, and if the pressure value of the fastener is larger than a preset pressure threshold value, the cloud server sends alarm information to the terminal device. The invention can quantitatively measure the pressure value of the fastener in real time without power lines and data lines, is convenient for the fastener to be arranged along a railway line in high density, and has the advantages of small size, simple structure, low cost, low failure rate and longer service life of the fastener fastening state sensor.
Description
Technical Field
The invention belongs to the technical field of railway safety detection, and particularly relates to a railway detection system based on RFID.
Background
The radio frequency identification technology is a technology for carrying out non-contact automatic identification by utilizing a free space, has the advantages of convenience and quickness in identification, high reading speed, dynamic real-time radio frequency communication and high safety, is mainly used for identifying the number of a vehicle in a railway safety detection system at present, and is not used for detecting physical environment states such as pressure, temperature and the like.
In the prior art, a strain radio frequency sensing tag of a passive chip is arranged by using an open-loop patch antenna, the working center frequency of the strain radio frequency sensing tag is 3.4GHz, and the pressure applied to the tag is indirectly deduced through frequency resonance offset; the radio frequency analog front end of the capacitive acceleration sensor chip has the total power consumption of about 7 mu W; in addition, a radio frequency humidity sensor label for monitoring concrete has a humidity measurement result in a range of 10% -70% and good linearity; however, the wireless transmission distance in the prior art is short, and the wireless transmission device can only meet the use requirements of specific fixed occasions and cannot meet the requirements of railway mobile safety detection.
Moreover, most of the current railway safety detection is that a patrolman carries out manual regular patrol, and the detection mode has the following defects:
1) the manual detection can only visually detect whether the fasteners on the railway are lost or damaged, and the pressure failure degree of the fasteners is difficult to detect;
2) the manual detection takes longer time, the detection efficiency is low, the labor intensity is high, and the randomness is higher;
3) because manual online detection is needed, the risk of safety accidents also exists;
4) the quantity of fasteners on the railway is huge, and the result of patrolling and examining can't carry out meticulous sign location and statistical analysis, can't trace back and patrol and examine the result book, also can not provide big data support for the fine management of circuit.
Therefore, in order to ensure the safety of the railway, the current requirements cannot be met by only manual detection.
In addition, the automatic detection system for railway application generally adopts a wired connection mode, so a large number of power lines and data lines need to be arranged along a railway line, the high construction cost of the automatic detection system restricts the high-density large-area arrangement of equipment like railway fasteners and the like along the line, and meanwhile, a line network cannot be laid in a mountainous area, a canyon, a frozen soil and other places with severe conditions and in a place with little smoke, so that more potential safety hazards and a large amount of maintenance cost are brought.
Disclosure of Invention
In view of the above, the present invention provides a railway detection system based on RFID to solve at least one technical problem in the prior art.
The technical scheme of the invention is as follows:
the embodiment of the invention provides a railway detection system based on RFID,
a railway detection system based on RFID comprises a fastener fastening state sensor, a radio frequency antenna, a reader, terminal equipment and a cloud server; wherein the content of the first and second substances,
the fastener fastening state sensor is used for sending radio frequency identification information to the radio frequency antenna, and the radio frequency identification information comprises position information and a pressure value of the fastener;
the radio frequency antenna sends the received radio frequency identification information to a reader;
the reader transmits the radio frequency identification information to the cloud server, the cloud server analyzes the received pressure value of the fastener, and if the pressure value of the fastener is larger than a preset pressure threshold value, the cloud server sends alarm information to the terminal device.
Further, the reader transmits the radio frequency identification information to the cloud server through a wireless or wired network.
Further, the terminal device confirms and/or processes the alarm information and sends the confirmation information and/or the processing information to the cloud server.
Further, each fastener fastening state sensor has a unique identification number.
Further, the fastener fastening state sensor is mounted on the rail through a fastening device.
Furthermore, a first gasket is installed above the fastener fastening state sensor, a second gasket is installed below the fastener fastening state sensor, the second gasket is located above the fastener elastic strip, and the first gasket, the fastener fastening state sensor, the second gasket and the fastener elastic strip are sequentially connected in a fastening mode through a fastening device.
Further, the fastener fastening state sensor comprises an RFID sensor and a pressure sensor;
the RFID sensor is used for detecting the position information of the fastener and sending the position information of the fastener to the reader; the RFID sensor is also used for supplying power to the pressure sensor;
the pressure sensor is used for detecting the pressure value of the fastener and sending the pressure value of the fastener to the RFID sensor, and the RFID sensor sends the pressure value of the fastener to the reader.
Further, fastener fastening state sensor still includes the appendage chamber, the RFID inductor is connected with pressure sensor, the RFID inductor is as for in the appendage chamber.
Further, the reader is a handheld reader or a vehicle-mounted mobile reader.
Further, the radio frequency antenna is a handheld radio frequency antenna or a vehicle-mounted radio frequency antenna.
The railway detection system based on the RFID can quantitatively measure the pressure value of the fastener in real time, and can be carried on a railway test vehicle to realize high-speed measurement of 20 km/h; in addition, the electronic tag of the fastener fastening state sensor can receive the microwave signal transmitted by the reader, and obtain energy through the electromagnetic induction coil to supply power to the fastener fastening state sensor for a short time, so that a power line and a data line are not needed, the fastener is convenient to arrange along a railway line in a high density manner, and the fastener fastening state sensor also has the following advantages due to the fact that a power supply system is omitted: the volume can reach centimeter magnitude, the structure is simple, the cost is low, the failure rate is low, and the service life is long.
Drawings
Fig. 1 is a schematic block diagram of a railway detection system based on RFID according to an embodiment of the present invention;
FIG. 2 is a schematic front view of a fastener fastening state sensor according to an embodiment of the present invention;
FIG. 3 is a schematic view of a fastener fastening state sensor according to an embodiment of the present invention;
FIG. 4 is a schematic top view of a fastener fastening state sensor according to an embodiment of the present invention;
FIG. 5 is a side view of a fastener fastening status sensor according to an embodiment of the present invention;
FIG. 6 is a schematic layout diagram of an RFID-based railway detection system according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating operation of an RFID-based railway detection system according to an embodiment of the present invention;
fig. 8 is a schematic application diagram of a railway detection system based on RFID according to an embodiment of the present invention.
The device comprises a fastener fastening state sensor-10, a radio frequency antenna-20, a reader-30, a terminal device-40 and a cloud server-50, wherein the fastener fastening state sensor-10 is connected with the radio frequency antenna-20;
a first gasket-60, a second gasket-70, a fastener elastic strip-80 and a fastening device-90;
an RFID sensor-11, a pressure sensor-12 and an ear-attached cavity-13.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
Example one
Fig. 1 is a schematic block structure diagram of a railway detection system based on RFID according to an embodiment of the present invention, and fig. 1 is a schematic block structure diagram; the system comprises a fastener fastening state sensor 10, a radio frequency antenna 20, a reader 30, a terminal device 40 and a cloud server 50; wherein the content of the first and second substances,
the fastener fastening state sensor 10 is configured to send radio frequency identification information to the radio frequency antenna 20, where the radio frequency identification information includes position information and a pressure value of the fastener;
the radio frequency antenna 20 sends the received radio frequency identification information to the reader 30;
the reader 30 transmits the radio frequency identification information to the cloud server 50, the cloud server 50 analyzes the received pressure value of the fastener, and if the pressure value of the fastener is greater than a preset pressure threshold value, the cloud server 50 sends alarm information to the terminal device 40.
Further, the cloud server 50 generates an analysis report after analyzing the received pressure value of the fastener.
Specifically, the fastener fastening state sensor 10 is mounted on the fastener;
the reader 30 acquires the position information and the pressure value of the fastener through the radio frequency antenna 20, and the reader 30 can be installed in an inspection vehicle; the radio frequency antenna 20 is used for receiving and transmitting radio frequency carrier waves to complete radio frequency communication, the radio frequency antenna 20 can be installed at the bottom of the detection vehicle, and the vertical distance between the radio frequency antenna 20 and the fastener can be 0.5-0.75 m.
The reader 30 transmits the received position information and the pressure value of the fastener to the cloud server 50 through a wired or wireless network, the cloud server 50 analyzes the received pressure value of the fastener to generate an analysis report, and the cloud server 50 sends alarm information to the terminal device 40; the cloud server 50 includes a web server, a database server; the wireless network may be a wireless network such as a GSM-R (Global System for Mobile Communications-hierarchy, Railway integrated digital Mobile communication System), LTE (Long Term Evolution), and the like.
Further, the terminal device 40 confirms and/or processes the alarm information, and sends the confirmation information and/or the processing information to the cloud server 50, so as to implement closed-loop management of the whole detection system; the terminal device 40 includes a computer, a mobile terminal, and the like.
Further, the cloud server 50 may send the analysis report, the confirmation information, and the processing information to the storage device.
Further, each fastener fastening state sensor 10 has a unique ID (identification) number for identifying position information of a corresponding fastener, and referring to fig. 3, the fastener fastening state sensor 10 may be mounted on a rail by a fastening means 90 (e.g., a fastener bolt, etc.) for collecting position information and a pressure value of the fastener.
Further, referring to fig. 3, the fastener fastening state sensor 10 is mounted on a fastener assembly including a first spacer 60, a second spacer 70, a fastener spring 80 and a fastening device 90; specifically, a first gasket 60 is installed above the fastener fastening state sensor 10, a second gasket 70 is installed below the fastener fastening state sensor, the second gasket is located above the fastener elastic strip 80, and the first gasket 60, the fastener fastening state sensor 10, the second gasket 70 and the fastener elastic strip 80 are sequentially fastened and connected through a fastening device 90.
Further, referring to fig. 2, 4 and 5, the fastener fastening state sensor 10 includes a main RFID sensor 11 and a pressure sensor 12, the RFID sensor 11 is connected to the pressure sensor 12, wherein the RFID sensor 11 transmits the position information of the fastener to the reader 30 through a wireless network, and the RFID sensor 11 is further used for generating inductive power to supply power to the pressure sensor 12;
the pressure sensor 12 is mounted on the fastening device 90, and is configured to receive the fastener pressure value transmitted by the fastening device 90 and send the fastener pressure value to the RFID sensor 11, and the RFID sensor 11 may send the fastener pressure value to the reader 30 through a wireless network.
Further, the fastener fastening state sensor 10 further includes an ear attachment cavity 13, and the RFID sensor 11 is disposed in the ear attachment cavity 13.
Further, the reader 30 may comprise a hand-held reader or a vehicle-mounted mobile reader.
Further, the rf antenna 20 includes a handheld rf antenna or a vehicle-mounted rf antenna.
Further, the RFID sensor 11 is a high frequency sensor, and the frequency of the high frequency sensor may be in the range of 869MHz to 960 MHz.
Fig. 6 is a schematic layout view of an RFID-based railway detection system according to an embodiment of the present invention, and in conjunction with fig. 3 and 6, a plurality of fasteners 1 and 2 are laid on a track. . . N, mounting the fastener fastening state sensor 10 on a fastener, mounting a reader 30 in a detection vehicle, collecting position information and pressure values of the fastener obtained by the field fastener fastening state sensor 10 by the reader 30, uploading the position information and the pressure values of the fastener to a web server in real time through a radio frequency antenna 20, analyzing the position information and the pressure values of the fastener by the web server, transmitting a generated analysis report to a database server, and storing the analysis report in storage equipment; in addition, if the pressure value of the fastener is larger than the preset pressure threshold value, the web server further pushes the alarm information and the analysis report to the terminal equipment of the user, the user confirms the alarm information through the terminal equipment and sends request information to the web server to indicate that the alarm information is confirmed or processed, and the web server responds to the request information and stores the confirmation or processing information.
Specifically, referring to fig. 7, fig. 7 is a flowchart illustrating a working process of a railway detection system based on RFID according to an embodiment of the present invention, where the working process of the railway detection system based on RFID according to the embodiment of the present invention is as follows:
the reader 30 wirelessly transmits an excitation signal to the fastener fastening state sensor 10 through the radio frequency antenna 20, the fastener fastening state sensor 10 starts to work by converting the excitation signal into energy, the fastener fastening state sensor 10 samples a stress signal, the fastener fastening state sensor 10 reports fastener position information and a pressure value to the cloud server 50, and meanwhile, the reader 30 identifies a reflection signal of the RFID sensor 11 tag (the reflection signal includes the fastener position information and the pressure value);
specifically, the rf antenna 20 transmits the excitation signal to the RFID sensor 11;
the RFID sensor 11 generates corresponding voltage after receiving the excitation signal, and the voltage can be used for the pressure sensor 12 to work; wherein, the voltage of the RFID inductor 11 can be in the range of 1.8V to 2.5V.
When the voltage in the pressure sensor 12 reaches a preset voltage value (for example, the preset voltage value is within a range of 1.8V to 2.5V), the pressure sensor 12 measures the pressure value of the fastener and transmits the pressure value to the RFID sensor 11, and the RFID sensor 11 transmits the pressure value and the position information (i.e., the serial number of the tag of the fastener) of the fastener to the radio frequency antenna 20 through the wireless network.
It should be noted that, in the railway detection system, the fastener fastening state sensor 10 may be replaced by a fastener temperature measurement sensor or a fastener humidity measurement sensor, and the fastener temperature measurement sensor is used to detect the temperature of the fastener, and includes a low-power-consumption temperature sensor and an RFID sensor; fastener moisture sensor is used for detecting the humidity of fastener, and this fastener moisture sensor includes the humidity transducer and the RFID inductor of low-power consumption.
The rf antenna 20 then sends the pressure value and location information (i.e., the tag number) of the fastener to the reader 30. Referring to fig. 6, the vehicle-mounted mobile reader or the handheld reader automatically activates a fastener fastening state sensor within a preset distance range of the vehicle-mounted antenna, so that position information and a pressure value of a fastener are obtained, the position information and the pressure value of the fastener are sent to the vehicle-mounted workstation through the vehicle-mounted antenna, the vehicle-mounted workstation sends the received position information and the received pressure value of the fastener to a database server by using GSM-R or LTE, the database server analyzes the pressure value of the fastener to generate an analysis report, and if the pressure value of the fastener is greater than a preset pressure threshold, the database server sends alarm information to a workstation terminal.
Therefore, in the railway detection system based on the RFID in this embodiment, since the fastener fastening state sensor 10 is a passive device, the electronic tag of the fastener fastening state sensor 10 can receive the microwave signal transmitted by the reader 30, and obtain energy through the electromagnetic induction coil to supply power to the fastener fastening state sensor 10 for a short time, and since the power supply system is omitted, the size of the fastener fastening state sensor 10 is small, and can reach a centimeter level or even smaller, and the railway detection system has a simple structure, a low cost, a low failure rate and a long service life.
In the railway detection system of the present embodiment, the fastening state sensor 10 is used, and the reader 30 and the fastening state sensor 10 can transmit data by means of the electromagnetic wave transmitted from the fastening state sensor 10 without physical contact therebetween, so that the fastening state sensor 10 can communicate with the reader 30 directly without looking at dust, mist, plastic, paper, wood, various obstacles, and the like.
In addition, because the read-write speed of the fastener fastening state sensor 10 is extremely fast, the general RFID transmission process is usually less than 100 milliseconds, and the high-frequency-band RFID sensor 11 can even identify and read the contents of a plurality of fastener labels simultaneously, thereby greatly improving the information transmission efficiency of the railway detection system.
Moreover, since the number of the RFID tag of the fastener fastening state sensor 10 is unique, the RFID tag corresponds to the position of the fastener one-to-one, so that the pressure value of each fastener can be accurately obtained.
The invention has the beneficial effects that:
the invention relates to a railway detection system based on an RFID (Radio Frequency Identification, RFID) technology, which utilizes an ultrahigh Frequency RFID sensor (869 MHz-960 MHz) to send an excitation signal to a fastener fastening state sensor arranged on the ground, and the RFID sensor generates corresponding current (for example, the current value can be 1.8A) after receiving the excitation signal, and the current can be used for a pressure sensor to work and simultaneously transmits the detected pressure value of a fastener to a reader-writer.
The railway detection system based on the RFID can quantitatively measure the pressure value of the fastener in real time, and can be carried on a railway test vehicle to realize high-speed measurement of 20 km/h; in addition, the electronic tag of the fastener fastening state sensor can receive the microwave signal transmitted by the reader, and obtain energy through the electromagnetic induction coil to supply power to the fastener fastening state sensor for a short time, so that a power line and a data line are not needed, the fastener is convenient to arrange along a railway line in a high density manner, and the fastener fastening state sensor also has the following advantages due to the fact that a power supply system is omitted: the volume can reach centimeter magnitude, the structure is simple, the cost is low, the failure rate is low, and the service life is long.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A railway detection system based on RFID is characterized by comprising a fastener fastening state sensor, a radio frequency antenna, a reader, terminal equipment and a cloud server; wherein the content of the first and second substances,
the fastener fastening state sensor is used for sending radio frequency identification information to the radio frequency antenna, and the radio frequency identification information comprises position information and a pressure value of the fastener;
the radio frequency antenna sends the received radio frequency identification information to a reader;
the reader transmits the radio frequency identification information to the cloud server, the cloud server analyzes the received pressure value of the fastener, and if the pressure value of the fastener is larger than a preset pressure threshold value, the cloud server sends alarm information to the terminal device.
2. The railway detection system of claim 1, wherein the reader transmits the radio frequency identification information to a cloud server via a wireless or wired network.
3. The railway detection system of claim 1, wherein the terminal device confirms and/or processes the alarm information and sends the confirmation information and/or the processing information to a cloud server.
4. The railway detection system of claim 1, wherein each fastener fastening status sensor has a unique identification number.
5. The railway detection system of claim 1, wherein the fastener fastening status sensor is mounted to the rail by a fastening device.
6. The railway detecting system as claimed in claim 1, wherein a first spacer is installed above the fastening state sensor, a second spacer is installed below the fastening state sensor, the second spacer is located above the fastener spring, and the first spacer, the fastening state sensor, the second spacer and the fastener spring are sequentially fastened and connected by the fastening means.
7. The railway detection system of claim 6, wherein the fastener fastening status sensor comprises an RFID sensor and a pressure sensor;
the RFID sensor is used for detecting the position information of the fastener and sending the position information of the fastener to the reader; the RFID sensor is also used for supplying power to the pressure sensor;
the pressure sensor is used for detecting the pressure value of the fastener and sending the pressure value of the fastener to the RFID sensor, and the RFID sensor sends the pressure value of the fastener to the reader.
8. The railway detection system of claim 7, wherein the fastener tightening status sensor further comprises an ear attachment cavity, the RFID sensor being coupled to a pressure sensor, the RFID sensor being disposed within the ear attachment cavity.
9. The railway detection system of claim 6, wherein the reader is a hand-held reader or a vehicle-mounted mobile reader.
10. The railway detection system of any of claims 1 to 9, wherein the radio frequency antenna is a handheld radio frequency antenna or a vehicle mounted radio frequency antenna.
Priority Applications (1)
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| CN202010026950.7A CN111169505A (en) | 2020-01-10 | 2020-01-10 | Railway detection system based on RFID |
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| CN202010026950.7A CN111169505A (en) | 2020-01-10 | 2020-01-10 | Railway detection system based on RFID |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112208570A (en) * | 2020-09-11 | 2021-01-12 | 兰州远望信息技术有限公司 | System and method for monitoring locking temperature of railway track |
| WO2022057796A1 (en) * | 2020-09-15 | 2022-03-24 | 深圳市远望谷信息技术股份有限公司 | Train brake shoe abrasion detection device and detection method |
-
2020
- 2020-01-10 CN CN202010026950.7A patent/CN111169505A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112208570A (en) * | 2020-09-11 | 2021-01-12 | 兰州远望信息技术有限公司 | System and method for monitoring locking temperature of railway track |
| WO2022057796A1 (en) * | 2020-09-15 | 2022-03-24 | 深圳市远望谷信息技术股份有限公司 | Train brake shoe abrasion detection device and detection method |
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