CN208544283U - Train Approaching pre-warning system is implemented in combination with using LoRa and radar detection - Google Patents
Train Approaching pre-warning system is implemented in combination with using LoRa and radar detection Download PDFInfo
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- CN208544283U CN208544283U CN201820940824.0U CN201820940824U CN208544283U CN 208544283 U CN208544283 U CN 208544283U CN 201820940824 U CN201820940824 U CN 201820940824U CN 208544283 U CN208544283 U CN 208544283U
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Abstract
Train Approaching pre-warning system is implemented in combination with using LoRa and radar detection the utility model discloses a kind of, it is used for including radar detection platform, N number of trunk desk, N number of handheld terminal, N number of station monitor station and one by N number of station monitor station and NM server, wherein, radar detection platform is wirelessly connected with N number of trunk desk and N number of handheld terminal respectively, N number of trunk desk is wirelessly connected with N number of handheld terminal and N number of station monitor station respectively, and N number of station monitor station is connect by railway dedicated network with NM server.This system be utilized radar detection velocity accuracy is high, accuracy is strong feature and radar not by the wind, the adverse weather conditions such as rain, mist, hail the advantages of.The LoRa communication mode of this system has the characteristics that low-power consumption, anti-interference, long transmission distance, penetration power are strong and small in size, applied to remote, low rate, low-power consumption Internet of Things wireless communication field, it is particularly suitable for applying in special road sections more than graben is more, tunnel is more, mountain is curved etc..
Description
Technical field
The utility model relates to the wireless communication fields on railway, and in particular to a kind of to utilize LoRa in conjunction with radar detection
Realize Train Approaching pre-warning system.
Background technique
In recent years, being continuously increased with total volume of railway freight, vehicle density greatly improves, and the Train Interval time is more next
It is shorter, guarantee that railroad train transportation safety will be primary major tasks and problem, this just proposes transportation safety safeguard measure
Higher requirement.Therefore, safety of railway traffic management level should be improved, prevents managerial careless omission, while also to improve iron
The technical level of the defeated safety equipment of road transport, prevents trouble before it happens, be solve the problems, such as it is basic.
The current domestic 800MHz train approaching protection alarm system using state's iron standard, this current set state iron mark
Quasi- 800MHz train approaching protection alarm system is the built-in installation wireless data sending device equipment inside the headstock of train,
The data information that train operation traveling is regularly sent when train operation, the constructor being sent on along train driving
Member, staff portable reception terminal on carry out early warning.But train driving road locating for some special railways
Section, such as: it will result in original 800MHz train when physical geographic environments feature more than graben is more, tunnel is more, mountain is curved etc. and connect
The communications such as the intercom of nearly safeguard alarm system and 150MHz, 400MHz are unsmooth.The reason of causing this phenomenon is existing
The interphone communication of 800MHz train approaching protection alarm system and 150MHz, 400MHz are in face of graben is more, tunnel is more, mountain
Wireless communication signals are sent when curved mostly equal physical geographic environments condition by the blocking of landform, cause Along Railway construction personnel, work
The receiving sensitivity for making the reception terminal of personnel declines to a great extent relative in good orographic conditions such as Plains, we it is domestic this
The landform of the Along Railway of sample still have it is very much, or even landform more complicated section in part is even mobile, signal of connection
It can not all cover, the transmission reliable communication distance that will result in early warning wireless communication in this way declines to a great extent, and also just reduces early warning
The safe distance of prompt.Thus it will appear since early warning communication can not some accident tragedies caused by early warning in time.
Summary of the invention
In view of above-mentioned prior art situation, the purpose of this utility model be develop it is a kind of using LoRa in conjunction with radar detection
Realize Train Approaching pre-warning system.This set Train Approaching early warning system mainly uses doppler radar and LoRa to spread
The combination of the communication technology, while using the association schemes of solar panels and photosynthetic silicon energy battery in terms of equipment power supply.Wherein adopt
With the radar exploration technique detect come to whereabouts close to train, then using LoRa spread spectrum technic by the traveling side of train
On the portable terminal for the construction personnel for being transferred to Along Railway to information such as, speed, then voice prompting announcement carried out by portable terminal
Alert information.It also include station monitor station in this system, station monitor station can also receive trunk desk signal by LoRa, and by each
The optical fiber cable at station forms internal lan, realizes the operation to whole network equipment, monitors, manages and maintains.
The technical scheme adopted by the utility model is that: it is a kind of to be implemented in combination with Train Approaching early warning using LoRa and radar detection
System, which is characterized in that the system comprises the radar detection platform of speed and driving direction for obtaining and sending train,
For receiving and forwarding N number of trunk desk of the data information of radar detection platform transmission, for receiving radar detection platform and N number of relaying
The N number of handheld terminal for the data information that platform is sent, N number of station monitor station for receiving the data information that N number of trunk desk is sent
And one connect internal lan by the optical fiber cable at each station for N number of station monitor station to be received data information
NM server, wherein radar detection platform is wirelessly connected with N number of trunk desk and N number of handheld terminal respectively, N number of trunk desk difference
It is wirelessly connected with N number of handheld terminal and N number of station monitor station, N number of station monitor station passes through railway dedicated network and network manager service
Device connection.
Radar detection platform described in the utility model include radar detection head, the first ARM controller STM32F407VGT6 and
First LoRa communication unit E19-433MS1W, the trunk desk include the 2nd LoRa communication unit E19-433MS1W, the 2nd ARM
Controller STM32F407VGT6 and the 3rd LoRa communication unit E19-433MS1W, the station monitor station include the 4th LoRa
Communication unit E19-433MS1W and third ARM controller STM32F407VGT6；Wherein, the input terminal of radar detection head detects row
The train sailed, output end are connect by the port RS232/RS485 with the input terminal of the first ARM controller, the first ARM controller
Output end is connect by SPI port with the input terminal of the first LoRa communication unit, and the output end of the first LoRa communication unit passes through
The input terminal of 2nd LoRa communication unit of the first trunk desk in the port LoRa and N number of trunk desk is wirelessly connected, the 2nd LoRa
The output end of communication unit is connect by SPI port with the input terminal of the second ARM controller, the output end of the second ARM controller
It is connect by SPI port with the input terminal of the 3rd LoRa communication unit, the output end of the 3rd LoRa communication unit passes through the end LoRa
The LoRa communication unit of mouth and next trunk desk is wirelessly connected, and so on, until being wirelessly connected trunk desk N；Radar detection
The output end of 2nd LoRa communication unit of the output end and the first trunk desk of the first LoRa communication unit of platform is down in
Output end after the LoRa communication unit of platform N passes through the port LoRa respectively and N number of handheld terminal is wirelessly connected；Meanwhile in first
Output end after the 2nd LoRa communication unit of platform passes through the first station monitor station in the port LoRa and N number of station monitor station
The input terminal of 4th LoRa communication unit is wirelessly connected, and so on, until the output end of the LoRa communication unit of trunk desk N without
Line is connected to the input terminal of the LoRa communication unit of station monitor station N；The output end of 4th LoRa communication unit and the 3rd ARM are controlled
The input terminal of device processed connects；The output end of third ARM controller connects NM server by cable, and so on, until arriving
The LoRa communication unit of station monitor station N connects ARM controller, then connects NM server by cable.
The power supply of system described in the utility model includes photovoltaic solar panel and photosynthetic silicon energy battery, photovoltaic solar
Plate is connect by cable with the buried photosynthetic silicon energy battery in underground.
Beneficial effect caused by the utility model is:
1, using this system, embody radar detection velocity accuracy is high, accuracy is strong feature and radar not by the wind,
The advantages of adverse weather conditions such as rain, mist, hail.Use Doppler search radar frequency for 2.4G, radar detection precision is
0.1km/h, error are -3 ~ 0km/h.
2, duplex communication mode (RS485 and RS232) is used in radar and equipment room, the two communication modes are mutual
Backup, to ensure the reliable and stable of communication.If going wrong all the way, system still is able to operate normally, at the same time can be to network
The information of radar fault is issued, so as to related personnel's on-call maintenance.
3, LoRa radio spread spectrum communication is the communication mode based on military spread spectrum technic, is had using the communication mode
There is the features such as low-power consumption, anti-interference, long transmission distance, strong and small in size penetration power, is applied to remote, low rate, low-power consumption
Internet of Things wireless communication field.It is particularly suitable for applying in special road sections more than graben is more, tunnel is more, mountain is curved etc..
4, compared with traditional FSK or OOK modulation technique, channel radio is not only expanded using LoRa Technology of Wireless Spread Spectrum
The coverage area of link is interrogated, and also improves the robustness of link.LoRa signal is also very strong to the penetration power of building.LoRa expands
Frequency communication has very high receiving sensitivity, about -138dBm, and transmission power is far smaller than existing 800MHz train approaching protection
The radio transmitted power of alarm system, maximum transmission power≤1W when the distribution of LoRa emission end is penetrated in this system.
5, this system external power supply mode is flexible, takes the standby electric continuation of the journey side of the photosynthetic silicon energy battery of solar photovoltaic powered combination
Formula has controller to carry out over-voltage, overshoot, Cross prevention photosynthetic silicon energy battery charging and discharging, can protect battery will not be because of upper
Reason damage is stated, photosynthetic silicon energy battery generates in charge and discharge process without acid mist, no hydrogen, does not generate gas in use
Body does not burn, does not explode, and has a safety feature, while photosynthetic silicon energy battery has with good low-temperature characteristics, in system solution
It is middle to also ensure photosynthetic silicon energy battery all-weather safety work, storage using by the mounting means of the buried underground of battery, it is comprehensive
The trouble-free operation of multi-angle safeguards system.
6, pass through radar detection and LoRa spread spectrum technic is combined to realize and early warning is carried out to close train, is ensured
The personal safety of Along Railway staff.
Detailed description of the invention
Fig. 1 is the system composition block diagram；
Fig. 2 is System Working Principle block diagram；
Fig. 3 is the external power supply power supply schematic diagram that system uses.
Specific embodiment
Below in conjunction with attached drawing, the utility model is described in further detail:
Referring to Fig.1, this system includes the radar detection platform of the speed and driving direction for obtaining and sending train, is used for
Receive and forward N number of trunk desk of the data information of radar detection platform transmission, for receiving radar detection platform and N number of trunk desk hair
N number of handheld terminal of the data information sent, N number of station monitor station for receiving the data information that N number of trunk desk is sent and
One passes through the network management of the optical fiber cable connection internal lan at each station for N number of station monitor station to be received data information
Server, wherein radar detection platform is wirelessly connected with N number of trunk desk and N number of handheld terminal respectively, N number of trunk desk respectively with it is N number of
Handheld terminal and N number of station monitor station are wirelessly connected, and N number of station monitor station is connected by railway dedicated network and NM server
It connects.
Referring to Fig. 2, radar detection platform includes radar detection head, the first ARM controller STM32F407VGT6 and the first LoRa
Communication unit E19-433MS1W, trunk desk include the 2nd LoRa communication unit E19-433MS1W, the second ARM controller
STM32F407VGT6 and the 3rd LoRa communication unit E19-433MS1W, station monitor station include the 4th LoRa communication unit E19-
433MS1W and third ARM controller STM32F407VGT6；Wherein, the train of the input terminal detection traveling of radar detection head, it is defeated
Outlet is connect by the port RS232/RS485 with the input terminal of the first ARM controller, and the output end of the first ARM controller passes through
SPI port is connect with the input terminal of the first LoRa communication unit, and the output end of the first LoRa communication unit passes through the port LoRa and N
The input terminal of 2nd LoRa communication unit of the first trunk desk in a trunk desk is wirelessly connected, the 2nd LoRa communication unit it is defeated
Outlet connect by SPI port with the input terminal of the second ARM controller, the output end of the second ARM controller pass through SPI port and
The input terminal of 3rd LoRa communication unit connects, and the output end of the 3rd LoRa communication unit passes through the port LoRa and next relaying
The LoRa communication unit of platform is wirelessly connected, and so on, until being wirelessly connected trunk desk N；First LoRa of radar detection platform is logical
The output end of the output end of unit and the 2nd LoRa communication unit of the first trunk desk is believed so that arriving the LoRa communication of trunk desk N
The output end of unit passes through the port LoRa respectively and N number of handheld terminal is wirelessly connected；Meanwhile first trunk desk the 2nd LoRa it is logical
Believe that the output end of unit passes through the 4th LoRa communication unit of the first station monitor station in the port LoRa and N number of station monitor station
Input terminal be wirelessly connected, and so on, until trunk desk N LoRa communication unit output end be wirelessly connected to station detection
The input terminal of the LoRa communication unit of platform N；The output end of 4th LoRa communication unit and the input terminal of third ARM controller connect
It connects；The output end of third ARM controller connects NM server by cable, and so on, until to station monitor station N's
LoRa communication unit connects ARM controller, then connects NM server by cable.
Referring to Fig. 3, the power supply of this system includes photovoltaic solar panel and photosynthetic silicon energy battery, and photovoltaic solar panel is logical
Cable is crossed to connect with the buried photosynthetic silicon energy battery in underground.
The implementation method of this system has following steps:
One, the speed and driving direction of the train travelled on radar detection platform detecting railway, using RS232/RS485 two-way
Warning information and data that communication mode will acquire are transferred to the emitting portion of LoRa communication unit, and duplex communication mode is mutual
Backup, to ensure the reliable and stable of communication.
Two, warning information and the data transmission that radar detection platform takes the communication mode of LoRa wireless spread spectrum will acquire
To N number of trunk desk and N number of handheld terminal, to expand the coverage area of radio communication chain circuit and improve receiving sensitivity.
Three, N number of trunk desk and N number of handheld terminal take LoRa wireless spread spectrum communication mode receive radar detection platform without
The early radar warning information of line transmission carries out alarm prompt；N number of trunk desk takes the communication mode of LoRa wireless spread spectrum to send radar
Warning information is to N number of station monitor station.
Four, N number of station monitor station receives trunk desk signal by the communication mode of LoRa wireless spread spectrum, and passes through each station
Optical fiber cable form internal lan, realize to the operation of whole network equipment, monitor, manage and maintain.
Five, equipment power supply is carried out using the photosynthetic silicon energy battery power supply mode of solar photovoltaic powered combination, using will be photosynthetic
The mounting means of the buried underground of silicon energy battery, to guarantee photosynthetic silicon energy battery all-weather safety work, storage.
The radar detection platform installation of this system along the railway, is driven through at radar detection platform by radar detection acquisition
Train speed and driving direction (come to and whereabouts), then LoRa transmitting terminal part is transferred to by RS485 or RS232,
The data information that LoRa transmitting terminal part will acquire is wirelessly sent to trunk desk and hand using the modulation system of LoRa spread spectrum communication
Hold terminal.
Trunk desk is also to use again after receiving the data information that radar detection platform is sent using LoRa spread spectrum technic
LoRa spread spectrum communication mode forwards, and is sent to next trunk desk, handheld terminal and station monitor station.
Handheld terminal is applied to teams and groups' operation or individual patrols.LoRa sending and receiving part built in handheld terminal and GPS satellite are fixed
Position module, the data information for receiving radar detection platform and trunk desk LoRa mode transmits wirelessly, then carry out voice prompting announcement
It is alert.
Station monitor station is also to receive the information that trunk desk is sent by LoRa spread spectrum technic.Station monitor station will connect
It receives information to be transferred to by the optical fiber cable at each station on the NM server of internal local area network, realize to whole network equipment
Detection, manages and maintains.
LoRa communication core component and GPS/ big-dipper satellite positioning region built in radar detection platform, trunk desk in this system
Part, power supply mode all use photovoltaic power supply that photosynthetic silicon energy battery power supply mode is combined to carry out equipment power supply.
Speed and traveling side of the radar detection platform using the train travelled on doppler radar railway in this system
To (come to and whereabouts), doppler radar technology can to it is upper the speed of down train locomotive detect, Doppler radar
Speed of detection precision is high, accuracy is strong, radar not by the wind, the adverse weather conditions such as rain, mist, hail.Since radar detection platform is set
The standby role in whole system is particularly important, uses duplex communication in the emitting portion of radar detection head and LoRa communication unit
Mode (RS485 and RS232), the two communication modes back up mutually, to ensure the reliable and stable of communication.
Warning information and TCP data segment in this system use LoRa radio spread spectrum communication technology.Train speed and side
It is obtained to the data such as information and warning information by RS485 or RS232 communication mode from the radar detection head in radar detection platform
It takes, trunk desk is then wirelessly transmitted to by the data information that LoRa radio spread spectrum communication technology will acquire and personnel are hand-held eventually
On end, and carry out alarm prompt.
Arranging that installing radar detection platform obtains more than those grabens are more, tunnel is more, mountain is curved etc. on the Along Railway of special road sections
Take close traveling train come to whereabouts and speed, then by obtained from radar detection platform traveling train direction and vehicle
The information such as speed are transferred to LoRa transmitting terminal part by RS485 or RS232 wired communication mode, then wireless by LoRa again
Transmitting terminal part by information using LoRa radio spread spectrum communication technology mode transmit wirelessly along personnel handheld terminal on and in
Voice prompting warning information is carried out after platform, then by handheld terminal.Among these along the train driving on according to landform and train
Operating range adds the connecting that trunk desk carries out signal transmission, so as to which the fully sufficient entire section of covering avoids signal blind zone
Appearance.Also hired car station monitor station, station monitor station are also to receive to relay by LoRa radio spread spectrum communication technology in this system
Platform signal, and internal lan is formed by the optical fiber cable at each station, realize to the operation of whole network equipment, monitoring, management and
Maintenance.
The design that this system combines radar detection and LoRa radio spread spectrum communication technology, solve graben is more, tunnel is more,
The curved signal blind zone early warning communications for waiting special road sections in mountain are wirelessly transferred unsmooth problem more.
Claims (3)
1. a kind of be implemented in combination with Train Approaching pre-warning system using LoRa and radar detection, which is characterized in that the system packet
Include the radar detection platform of the speed and driving direction for obtaining and sending train, for receiving and forwarding radar detection platform to send
N number of trunk desk of data information, N number of hand-held end for receiving the data information that radar detection platform and N number of trunk desk are sent
End, N number of station monitor station for receiving the data information that N number of trunk desk is sent and one are used for N number of station monitor station
Receive the NM server that data information connects internal lan by the optical fiber cable at each station, wherein radar detection platform
It is wirelessly connected respectively with N number of trunk desk and N number of handheld terminal, N number of trunk desk is detected with N number of handheld terminal and N number of station respectively
Platform is wirelessly connected, and N number of station monitor station is connect by railway dedicated network with NM server.
2. according to claim 1 be implemented in combination with Train Approaching pre-warning system, feature using LoRa and radar detection
It is, the radar detection platform includes radar detection head, the first ARM controller STM32F407VGT6 and the first LoRa communication
Single E19-433MS1W, the trunk desk include the 2nd LoRa communication unit E19-433MS1W, the second ARM controller
STM32F407VGT6 and the 3rd LoRa communication unit E19-433MS1W, the station monitor station include the 4th LoRa communication unit
First E19-433MS1W and third ARM controller STM32F407VGT6；Wherein, the column of the input terminal detection traveling of radar detection head
Vehicle, output end are connect by the port RS232/RS485 with the input terminal of the first ARM controller, the output end of the first ARM controller
It is connect by SPI port with the input terminal of the first LoRa communication unit, the output end of the first LoRa communication unit passes through the end LoRa
The input terminal of mouth and the 2nd LoRa communication unit of the first trunk desk in N number of trunk desk is wirelessly connected, the 2nd LoRa communication unit
The output end of member is connect by SPI port with the input terminal of the second ARM controller, and the output end of the second ARM controller passes through SPI
Port is connect with the input terminal of the 3rd LoRa communication unit, the output end of the 3rd LoRa communication unit by the port LoRa with it is next
The LoRa communication unit of a trunk desk is wirelessly connected, and so on, until being wirelessly connected trunk desk N；The first of radar detection platform
The output end of 2nd LoRa communication unit of the output end of LoRa communication unit and the first trunk desk is down to trunk desk N's
The output end of LoRa communication unit passes through the port LoRa respectively and N number of handheld terminal is wirelessly connected；Meanwhile first trunk desk
The 4th LoRa that the output end of two LoRa communication units passes through the first station monitor station in the port LoRa and N number of station monitor station
The input terminal of communication unit is wirelessly connected, and so on, until the output end of the LoRa communication unit of trunk desk N is wirelessly connected to
The input terminal of the LoRa communication unit of station monitor station N；The output end of 4th LoRa communication unit is defeated with third ARM controller
Enter end connection；The output end of third ARM controller connects NM server by cable, and so on, until being detected to station
The LoRa communication unit of platform N connects ARM controller, then connects NM server by cable.
3. according to claim 1 or as claimed in claim 2 being implemented in combination with Train Approaching early warning using LoRa and radar detection
System, which is characterized in that the power supply of the system includes photovoltaic solar panel and photosynthetic silicon energy battery, photovoltaic solar panel
It is connect by cable with the buried photosynthetic silicon energy battery in underground.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820940824.0U CN208544283U (en) | 2018-06-19 | 2018-06-19 | Train Approaching pre-warning system is implemented in combination with using LoRa and radar detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820940824.0U CN208544283U (en) | 2018-06-19 | 2018-06-19 | Train Approaching pre-warning system is implemented in combination with using LoRa and radar detection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609035A (en) * | 2018-06-19 | 2018-10-02 | 天津七二通信广播股份有限公司 | The Train Approaching early warning system and implementation method of LoRa combination radar detections |
| CN110949453A (en) * | 2019-12-09 | 2020-04-03 | 交控科技股份有限公司 | Safety protection method and system applied to rail transit |
| US11539177B2 (en) * | 2018-06-15 | 2022-12-27 | Siemens Mobility, Inc. | Vital relay assembly for modular solid-state current-limiting |
-
2018
- 2018-06-19 CN CN201820940824.0U patent/CN208544283U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11539177B2 (en) * | 2018-06-15 | 2022-12-27 | Siemens Mobility, Inc. | Vital relay assembly for modular solid-state current-limiting |
| CN108609035A (en) * | 2018-06-19 | 2018-10-02 | 天津七二通信广播股份有限公司 | The Train Approaching early warning system and implementation method of LoRa combination radar detections |
| CN110949453A (en) * | 2019-12-09 | 2020-04-03 | 交控科技股份有限公司 | Safety protection method and system applied to rail transit |
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