CN207720422U - A kind of train door monitor terminal and its system based on LoRa - Google Patents
A kind of train door monitor terminal and its system based on LoRa Download PDFInfo
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- CN207720422U CN207720422U CN201820176811.0U CN201820176811U CN207720422U CN 207720422 U CN207720422 U CN 207720422U CN 201820176811 U CN201820176811 U CN 201820176811U CN 207720422 U CN207720422 U CN 207720422U
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Abstract
The utility model provides a kind of train door monitor terminal and its system based on LoRa, and the train door monitor terminal includes：Power module, main control module, magnetic strength detection module, power amplifier module and LoRa transceiver modules, the power module is connected with the main control module, magnetic strength detection module and power amplifier module respectively, the magnetic strength detection module, power amplifier module and LoRa transceiver modules are connected with the main control module respectively, and the power amplifier module is connected with the LoRa transceiver modules.The utility model can effectively monitor the state and its exception of train door by the train door monitor terminal based on LoRa, and LoRa may be implemented and wirelessly dispose installation, to effectively realize full vehicle car door monitoring system, realize overall monitor；The utility model can realize effective monitoring to train door, can reduce the serious problem of packet loss to the greatest extent, and will not mutually conflict with other wireless devices on train.
Description
Technical field
The utility model is related to a kind of train door monitoring devices more particularly to a kind of train door based on LoRa to monitor eventually
End, and be related to include the train door monitor terminal based on LoRa train door monitoring system.
Background technology
The train of current all operations, especially shagreen vehicle, there are many and be not equipped with train door abnormality detection system,
Therefore, driver is difficult to grasp vehicle door status comprehensively, cannot find and solve in time failure.Therefore, it is necessary to not match to existing
The train of standby train door abnormality detection carries out train door monitoring transformation, but for technological layer, there are following needs
It solves the problems, such as：One, due to or often exchange the case where, it is by the way of wire transmission and infeasible；If two,
By the way of wireless transmission, need to consider that railway carriage environment is the very strong iron and steel material quality composition of shielding, therefore general
Wireless communication mode, such as WIFI, bluetooth or zigbee can have the drawbacks such as packet loss is serious；Three, due to electrically being set on train
It is standby more while thering are other wireless devices using, therefore making an uproar using such as WIFI, bluetooth or zigbee wireless communication modes
Sound interference can be bigger.
Invention content
Technical problem to be solved in the utility model is that need to provide one kind being capable of effective monitoring train door state and different
Often, and the train door monitor terminal based on LoRa of wireless deployment installation can be realized, and it includes this based on LoRa's to provide
The train door monitoring system of train door monitor terminal.
In this regard, the utility model provides a kind of train door monitor terminal based on LoRa, including：Power module, master control mould
Block, magnetic strength detection module, power amplifier module and LoRa transceiver modules, the power module respectively with the main control module, magnetic
Sense detection module is connected with power amplifier module, the magnetic strength detection module, power amplifier module and LoRa transceiver modules point
It is not connected with the main control module, the power amplifier module is connected with the LoRa transceiver modules.
Further improvement of the utility model is that the power amplifier module includes switch control unit, the LoRa
The receiving terminal and transmitting terminal of transceiver module are connected to the power amplifier module by the switch control unit respectively.
Further improvement of the utility model is, further includes backup battery voltage detection module, the backup battery electricity
Pressure detection module is connected with the power module.
Further improvement of the utility model is, further includes watchdog module, the watchdog module and the master control
Module is connected.
Further improvement of the utility model is that the power module includes power amplification power supply unit and master control power supply
Unit, the power amplification power supply unit are connected with the main control module and power amplifier module respectively, the master control power supply
Unit is connected with the main control module.
Further improvement of the utility model is that the magnetic strength detection module includes tongue tube U1028 and pull-up resistor
One end of R54, the tongue tube U1028 are connected to upper potential end by pull-up resistor R54, and the tongue tube U1028's is another
End ground connection；The tongue tube U1028 is connected to the main control module close to one end of pull-up resistor R54.
Further improvement of the utility model is that the LoRa transceiver modules include LoRa Transmit-Receive Units, filter unit
And duplexer, the receiving terminal and transmitting terminal of the LoRa Transmit-Receive Units are connected by filter unit with the duplexer respectively
It connects.
Further improvement of the utility model is that the filter unit includes accept filter unit and transmitting filtering list
The receiving terminal of member, the LoRa Transmit-Receive Units is connected by the unit that accepts filter with the duplexer, the LoRa
The transmitting terminal of Transmit-Receive Unit is connected by the transmitting filter unit with the duplexer.
Further improvement of the utility model is, further includes switch control module and indicating module, the switch control
Module and indicating module are connected with the main control module respectively.
The utility model also provides a kind of train door monitoring system based on LoRa, including network server, management platform,
LoRa gateways and as described above the train door monitor terminal based on LoRa, the LoRa gateways and train door monitoring are whole
Star Network is constituted between end, the hub-and-spoke configuration includes a LoRa gateway and multiple train door monitor terminals；
The LoRa gateways are realized by network server and the management platform and are communicated.
Compared with prior art, the beneficial effects of the utility model are：By the train door monitor terminal based on LoRa,
The state and its exception of train door can be effectively monitored, LoRa broadband communication transmission technologys are coordinated, may be implemented wirelessly to dispose peace
Dress, to effectively realize full vehicle car door monitoring system；Also, also by the 4G modules built in LoRa gateways, and then in real time will report
Alert signal transmission realizes overall monitor to management platform；The utility model can realize effective monitoring to train door, Neng Goujin
May be decreased through the serious risk of packet loss caused by the modes such as WIFI, bluetooth or zigbee, and will not on train
Other wireless devices mutually conflict.
Description of the drawings
Fig. 1 is a kind of circuit structure block diagram of embodiment of the utility model；
Fig. 2 is a kind of circuit diagram of the power module of embodiment of the utility model；
Fig. 3 is a kind of circuit diagram of the main control module of embodiment of the utility model；
Fig. 4 is a kind of circuit diagram of the magnetic strength detection module of embodiment of the utility model；
Fig. 5 is a kind of circuit diagram of the power amplifier module of embodiment of the utility model；
Fig. 6 is a kind of circuit diagram of the LoRa transceiver modules of embodiment of the utility model；
Fig. 7 is a kind of circuit diagram of the backup battery voltage detection module of embodiment of the utility model；
Fig. 8 is a kind of circuit diagram of the watchdog module of embodiment of the utility model；
Fig. 9 is a kind of circuit diagram of the switch control module of embodiment of the utility model；
Figure 10 is a kind of circuit diagram of the indicating module of embodiment of the utility model；
Figure 11 is a kind of system structure principle schematic of embodiment of the utility model；
Figure 12 is a kind of course of work schematic diagram of the train door monitor terminal of embodiment of the utility model.
Specific implementation mode
Below in conjunction with the accompanying drawings, the preferably embodiment of the utility model is described in further detail.
As shown in Figures 1 to 6, this example provides a kind of train door monitor terminal based on LoRa, including：Power module 1, master
Control module 2, magnetic strength detection module 3, power amplifier module 4 and LoRa transceiver modules 5, the power module 1 respectively with the master
Control module 2, magnetic strength detection module 3 are connected with power amplifier module 4, the magnetic strength detection module 3,4 and of power amplifier module
LoRa transceiver modules 5 are connected with the main control module 2 respectively, the power amplifier module 4 and 5 phase of LoRa transceiver modules
Connection.
As shown in Fig. 2, power module 1 described in this example includes power amplification power supply unit 11 and master control power supply unit 12, institute
It states power amplification power supply unit 11 to be respectively connected with the main control module 2 and power amplifier module 4, the master control power supply unit
12 are connected with the main control module 2.
The chip of power module 1 described in this example does not use LDO to carry out voltage conversion, but is directly supplied using 3.0V batteries
The mode of electricity can be conducive to save power consumption in this way.In Fig. 2, the VDD_PA in the power amplification power supply unit 11 is described
Power amplifier module 4（PA modules）Supply input, break-make is controlled by the main control chip U8 of the main control module 2.It is described
Master control power supply unit 12 is the power supply circuit of the main control chip U8 of the main control module 2, is realized by the master control power supply unit 12
Power supply needs not move through LDO voltage stabilizings, it will be able to directly feed the main control chip U8 power supplies；Preferably, it is controlled by outer watchdog
The enabled foot of power supply metal-oxide-semiconductor.
Main control module 2 described in this example is made of minimum system each section, as shown in figure 3, being wanted based on actual application environment
The considerations of reliability of summing, the main control chip U8 of main control module 2 described in this example（STM8L151C6）On be provided with shielding case.
As shown in figure 4, magnetic strength detection module 3 described in this example includes tongue tube U1028 and pull-up resistor R54, the dry spring
One end of pipe U1028 is connected to upper potential end, the other end ground connection of the tongue tube U1028 by pull-up resistor R54；It is described dry
Reed pipe U1028 is connected to the main control module 2 close to one end of pull-up resistor R54.When magnetite close to when, be attracted tongue tube
U1028, output voltage saltus step.Similarly, when magnetite leaves, tongue tube U1028 is disconnected.
As shown in figure 5, power amplifier module 4 described in this example includes switch control unit 41, the LoRa transceiver modules 5
Receiving terminal and transmitting terminal are connected to the power amplifier module 4 by the switch control unit 41 respectively.
As shown in fig. 6, LoRa transceiver modules 5 described in this example include LoRa Transmit-Receive Units 51, filter unit and duplexer
52, the receiving terminal and transmitting terminal of the LoRa Transmit-Receive Units 51 are connected by filter unit with the duplexer 52 respectively.
The filter unit preferably includes accept filter unit 53 and transmitting filter unit 54, the receiving terminal of the LoRa Transmit-Receive Units 51
It is connected with the duplexer 52 by the unit 53 that accepts filter, the transmitting terminal of the LoRa Transmit-Receive Units 51 passes through institute
Transmitting filter unit 54 is stated with the duplexer 52 to be connected.
Fig. 6 is the circuit diagram that LoRa is received and emitted, and the LoRa transceiver modules 5 include LoRa chips U19
（SX1278）, wherein the BYPASS RX of the LoRa Transmit-Receive Units 51 be receiving terminal, the 1278 of the LoRa Transmit-Receive Units 51
TX is transmitting terminal.LoRa chips U19（SX1278）Receiving terminal and transmitting terminal duplexer 52 is connected to by filter network, by
It is to receive or emit that duplexer 52, which controls alarm,.
In Fig. 5 and Fig. 6, the LoRa chips U19 of the LoRa transceiver modules 5（SX1278）Receiving terminal be connected to the day
The RF1 of the chip U18 of wiretap 52, transmitting terminal are connected to the RF1 of the chip U21 of the duplexer 52.To make the row
Car door monitor terminal is in reception state, then it is low level to make the control signal RXTX-RF of the duplexer 52, at this time antenna
The RFC of the chip U18 of switch 52 is connected with RF1, that is, is in reception state；There are two types of emitting shapes for the train door monitor terminal
State, one is emit without using power amplifier：It is low level to make control signal PA TX Control, and controls signal
When RXTX-RF is high level, the RFC of the chip U18 of the duplexer 52 is connected with RF2, the chip U21's of duplexer 52
RF1 is connected with RFC, and the RFC of the chip U24 of duplexer 52 is connected with RF2, and the train door monitor terminal is not i.e. at this time
Use power amplifier emission state, transmission power 18dBm；Another kind is emitted using power amplifier：Make control signal
PA TX Control be high level, and control signal RXTX-RF be high level when, the RFC of the chip U18 of duplexer 52
It is connected with RF1, the RF2 of the chip U21 of duplexer 52 is connected with RFC, and the RFC and RF2 of the chip day U24 of duplexer 52 are led
Logical, the train door monitor terminal is in and uses power amplifier emission state, the core that signal passes through duplexer 52 at this time
Piece U21 is connected on the input terminal of power amplifier chip, and the output of power amplification is connected to the chip U18 of duplexer 52, letter
Transmission power is 27dBm number after amplification.Optional radiation pattern can reduce when the train door monitor terminal emits
Power consumption, when receiving the signal of LoRa gateways, read signal strength values can substantially judge the train door monitor terminal with
The distance of LoRa gateways, if distance is closer, the nonpassage of signal overpower amplifier of the train door monitor terminal is launched
It goes, if distance is farther out, is emitted using power amplifier.
As shown in Figure 7 and Figure 8, this example further includes backup battery voltage detection module 6 and watchdog module 7, the standby
Battery voltage sensing module 6 is connected with the power module 1, and the watchdog module 7 is connected with the main control module 2.
Watchdog module 7 described in this example is used to guard the main program stable operation of the main control chip U8 of the main control module 2.
Each 10 minutes, a house dog is fed by the one-line instructions of clk；If continuing to exceed 20 minutes without feeding dog, the house dog
The power supply that module 7 will drag down the main control chip U8 by NRST enables foot, and main control chip U8 described in power-off restarting reaches stable
The purpose of operation.
As shown in Figure 9 and Figure 10, this example further preferably includes switch control module 8 and indicating module 9, and then is realized to described
The switch of train door monitor terminal controls and LED indication function, convenient for actual use.
As shown in figure 11, this example also provides a kind of train door monitoring system based on LoRa, including network server, management
Platform, LoRa gateways and the train door monitor terminal based on LoRa as described above, the LoRa gateways and the train door
Star Network is constituted between monitor terminal, the hub-and-spoke configuration includes a LoRa gateway and multiple train door monitoring
Terminal, the link communication between the train door monitor terminal and LoRa gateways are real in such a way that 1 tunnel issues and 7 tunnels receive
It is existing；The LoRa gateways are realized by network server and the management platform and are communicated.
Train door monitor terminal based on LoRa described in this example（Abbreviation train door monitor terminal）Working method be：Work as institute
It states the electric signal that magnetic strength detection module 3 detects switch gate, after the main control chip U8 of the main control module 2 receives the signal, opens
The information is uploaded to the LoRa nets with the LoRa chips U19 of the LoRa transceiver modules 5 and the power amplifier module 4
It closes.
As shown in figure 11, LoRa gateways described in this example are for realizing car door abnormality alarming, car door final state, detection vehicle
Motion state, GPS positioning function, terminal alert offline and the functions such as terminal low-current alarming；The train door monitor terminal is used
In functions such as realization vehicle door status detection, low-current alarming, car door abnormality alarming, heartbeat function and matching compartment ID；The work
Control machine alerts letter offline for realizing display vehicle door status, setting allotment compartment, display car door abnormality alarming information, display terminal
The functions such as breath, display terminal battery level information and display terminal low-current alarming information；The management platform is for realizing, vehicle
Door state, setting allotment compartment, car door abnormality alarming information, terminal alert offline, terminal battery electricity quantity, terminal low-current alarming,
The functions such as stationary vehicle/motion state, vehicle real time position, car speed, vehicle historical track and statistics vehicle door status.
This example is based on the multinomial technologies such as LoRaWAN Wide Area Communications, internet and big data processing, makes from sensing layer to answering
With layer complete Internet of Things wireless telecommunications solution between the two, it is suitable for Wide Area Netweork wireless communication platform, having can
Webmaster, remote, high power capacity, low-power consumption, low cost and the characteristics such as anti-interference.Platform of internet of things solution includes：Network
Server (Network Server), gateway (Gateway), terminal (Node), increase income high in the clouds SDK kits, end for increasing income
Hold SDK kits and mating testing tool ＆ protocal analysis softwares（Sniffer）.The specific solution system of this example
Framework is：Network server, management platform, LoRa gateways and train door monitor terminal etc., as shown in figure 11.
It can be seen from figure 11 that Star Network is constituted between LoRa gateways and the train door monitor terminal, in star-like knot
In structure, including a Centroid（That is network coordinator）With multiple terminal nodes, this is because gateway has in the network
The function of coordinator, i.e., the LoRa gateways in this example serve as Centroid, and the train door monitor terminal is terminal node.In order to
It improves concurrency performance and reduces network delay, this example is on hardware in such a way that 7 tunnels receive and 1 tunnel issues.When the train
Gatekeeper control terminal detects that the state of train door changes, via LoRa transmission of network to the LoRa gateways, the LoRa gateways
The network server is uploaded to by the 4G modules built in it after parsing related data, is realized from there through the management platform
Remote monitoring and early warning.
Preferably, as shown in figure 12, the course of work of train door monitor terminal described in this example is：When the magnetic strength detects mould
The door sensor triggering of block 3 is interrupted, and is executed data and is sent, and after being sent completely, be delayed preset time, and opens a CAD detection, if
Reply data is not received, then reopens CAD detections after preset time, sleep is entered if having correctly received reply data
Pattern；If the number for opening CAD detections is more than preset times, retransmission is opened；Wherein, the CAD detections indicate channel
Detection.
Preset time described in this example is preferably arranged to 2s, and the preset times are set greater than 2 natural number；Certainly, root
According to the difference of actual requirement, user can self-defined modification preset time and preset times.
The course of work of LoRa gateways described in this example is：After the uplink information for receiving the train door monitor terminal, table
Show the LoRa chips U19（SX1278）It is busy, then response is executed after waiting for preset time, such as issues and answers at next 2 S moment
Message is answered, and is no longer retransmitted after issuing completion once；If preset times are not sent successfully, terminate to retransmit.The LoRa
In the course of work of gateway, set by the setting of preset time and preset times and the train door monitor terminal course of work
Preset time and preset times be consistent.
It is noted that between train door monitor terminal described in this example and the LoRa gateways, upper line number is sent once
It according to later, is realized by preset times and receives window, the LoRa gateways selection, which receives, receives the arbitrary of window in preset times
Downlink data.
About secure communication, LoRaWAN is solved generally by the way of multi-layer security：Unique netkey
（EU164）, ensure IP Security；It is unique to apply key（EU164）, ensure the safety between application layer terminal-to-terminal service；
Belong to the special key of equipment（EUI128）.Although strengthening safety, larger link load and battery can be caused to damage
Consumption；Due in the usage scenario, to reach farthest transmission range, using the mode setting of low rate, using LoRaWAN at this time
Security protocol will be significantly greatly increased modulation and demodulation duration, increase power consumption；Reduce network capacity.
It is noted that it is vehicle door status data, safety that train door monitor terminal described in this example, which needs the data transmitted,
Property be not key factor relatively, can remove completely key related protocol regulation, it is only necessary to use simple CRC check, to reach
To the purpose of the consumption of minimum link and increase output distance, while increasing the service life of battery.Therefore, LoRa numbers described in this example
According to transmission using CRC check, it is not necessarily to key.
According to existing LoRaWAN procotols, according to the difference of practical application, terminal device is divided into A/B/C tri-
Class：Class A are two-way communication terminal device.This kind of terminal device allows two-way communication, each terminal device uplink
Transmission can be along with two downlink reception windows.The transmission slot of terminal device is to be based on its own communication requirement, and fine tuning is base
In a random time reference（ALOHA agreements）.Terminal device belonging to Class A is least in power-consuming in application, terminal hair
After sending a upstream signals, server can rapidly carry out downlink communication whenever, and the downlink communication of server is all
It can only be after uplink communication.
Class B are the two-way communication terminal device with default receiving slit.This kind of terminal device can be when default
Between the extra reception window of middle opening, in order to reach this purpose, terminal device can synchronize from gateway and receive a Beacon, lead to
Beacon is crossed to synchronize the time of base station and module.This mode can make server know that terminal device is receiving number
According to.
Class C are the two-way communication terminal device with maximum receiving slit.This kind of terminal device continuous openness connects
Window is received, is only closed in transmission.
According to Class A, Class B and Class C these three patterns, the train door detection terminal and LoRa gateways it
Between formed three kinds of time relationships：Class A are relative synchronization；Class B are absolute synchronization；Class C are long reception pattern, nothing
Time relationship.First, class C modes are long reception pattern, and LoRa chip stand-by power consumptions are 12mA, for using battery powered
Terminal device for, this operating mode is unacceptable；Class B-modes, need gateway and each terminal every
For a period of time（128s is defined as in LoRaWAN）Time synchronization calibration is carried out, but due to network delay, crystal oscillator quality, exploitation
From the point of view of cost and power consumption of terminal, which is not suitable for the scene；Class mode As, two reception windows in LoRaWAN
Mouthful, from the point of view of experimental data, 7 tunnels receive and the LoRa gateways of 1 tunnel downlink, and the train door inspection more than 18 is received in 10s
It surveys under terminal uplink message scenario, LoRa gateways will miss downlink window compared with multiple terminals.Caused by the result is that terminal repeatedly on
Row, battery loss is serious, and channel occupancy is serious, this, which is wireless telecommunications system, to receive.
To sum up, Class B and Class C cannot meet the requirement of this example；Therefore, this example is with Class mode As（Relatively
It is synchronous）Based on, and original Class mode As are improved, by a uplink immediately two for the prior art
It receives window and is improved to a upstream data and then n times reception window；The i.e. described train door monitor terminal and the LoRa nets
Between pass, after sending a upstream data, pass through preset times（Such as N）It realizes and receives window, the LoRa gateways selection connects
Receive preset times（Such as N）The middle arbitrary downlink data for receiving window, this mode increase network capacity, reduce the row
The energy loss of car door detection terminal and LoRa gateways；Simultaneously because response success rate is effectively increased, arrangement net is improved
The concurrency performance of network.
This example can effectively be monitored the state and its exception of train door, be matched by the train door monitor terminal based on LoRa
LoRa broadband communication transmission technologys are closed, may be implemented wirelessly to dispose installation, to effectively realize full vehicle car door monitoring system；And
And also by the 4G modules built in LoRa gateways, and then alarm signal is transferred to management platform in real time, realizes overall monitor；
This example can realize effective monitoring to train door, can reduce as far as possible through the modes such as WIFI, bluetooth or zigbee institute band
The serious risk of packet loss come, and will not mutually conflict with other wireless devices on train.
The specific implementation mode of the above is the better embodiment of the utility model, and it is new not to limit this practicality with this
The specific implementation range of type, the scope of the utility model includes being not limited to present embodiment, all according to the utility model
Shape, structure made by equivalence changes it is within the protection scope of the present utility model.
Claims (10)
1. a kind of train door monitor terminal based on LoRa, which is characterized in that including：Power module, main control module, magnetic strength detection
Module, power amplifier module and LoRa transceiver modules, the power module respectively with the main control module, magnetic strength detection module and
Power amplifier module is connected, the magnetic strength detection module, power amplifier module and LoRa transceiver modules respectively with the master control
Module is connected, and the power amplifier module is connected with the LoRa transceiver modules.
2. the train door monitor terminal according to claim 1 based on LoRa, which is characterized in that the power amplifier module
Including switch control unit, the receiving terminal of the LoRa transceiver modules is connected by the switch control unit respectively with transmitting terminal
To the power amplifier module.
3. the train door monitor terminal according to claim 1 or 2 based on LoRa, which is characterized in that further include standby electricity
Cell voltage detection module, the backup battery voltage detection module are connected with the power module.
4. the train door monitor terminal according to claim 1 or 2 based on LoRa, which is characterized in that further include house dog
Module, the watchdog module are connected with the main control module.
5. the train door monitor terminal according to claim 1 or 2 based on LoRa, which is characterized in that the power module
Including power amplification power supply unit and master control power supply unit, the power amplification power supply unit respectively with the main control module and work(
Rate amplification module is connected, and the master control power supply unit is connected with the main control module.
6. the train door monitor terminal according to claim 1 or 2 based on LoRa, which is characterized in that the magnetic strength detection
Module includes tongue tube U1028 and pull-up resistor R54, and one end of the tongue tube U1028 is connected to by pull-up resistor R54
Potential end, the other end ground connection of the tongue tube U1028；The tongue tube U1028 is connected to close to one end of pull-up resistor R54
The main control module.
7. the train door monitor terminal according to claim 1 or 2 based on LoRa, which is characterized in that the LoRa transmitting-receivings
Module includes LoRa Transmit-Receive Units, filter unit and duplexer, receiving terminal and the transmitting terminal difference of the LoRa Transmit-Receive Units
It is connected with the duplexer by filter unit.
8. the train door monitor terminal according to claim 7 based on LoRa, which is characterized in that the filter unit includes
Accept filter unit and transmitting filter unit, the receiving terminals of the LoRa Transmit-Receive Units by it is described accept filter unit with it is described
Duplexer is connected, and the transmitting terminal of the LoRa Transmit-Receive Units is connected by the transmitting filter unit with the duplexer
It connects.
9. the train door monitor terminal according to claim 1 or 2 based on LoRa, which is characterized in that further include switch control
Molding block and indicating module, the switch control module and indicating module are connected with the main control module respectively.
10. a kind of train door monitoring system based on LoRa, which is characterized in that including network server, management platform, LoRa nets
Close and the train door monitor terminal based on LoRa as described in claim 1 to 9 any one, the LoRa gateways with it is described
Star Network is constituted between train door monitor terminal, the hub-and-spoke configuration includes a LoRa gateway and multiple trains
Gatekeeper control terminal；The LoRa gateways are realized by network server and the management platform and are communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820176811.0U CN207720422U (en) | 2018-02-01 | 2018-02-01 | A kind of train door monitor terminal and its system based on LoRa |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820176811.0U CN207720422U (en) | 2018-02-01 | 2018-02-01 | A kind of train door monitor terminal and its system based on LoRa |
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| Publication Number | Publication Date |
|---|---|
| CN207720422U true CN207720422U (en) | 2018-08-10 |
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ID=63053275
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820176811.0U Active CN207720422U (en) | 2018-02-01 | 2018-02-01 | A kind of train door monitor terminal and its system based on LoRa |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108093379A (en) * | 2018-02-01 | 2018-05-29 | 深圳市泰比特科技有限公司 | A kind of train door monitor terminal and its system based on LoRa |
| CN108834096A (en) * | 2018-08-27 | 2018-11-16 | 南京新联电子股份有限公司 | A kind of gateway terminal for environment protection digital monitoring acquisition |
-
2018
- 2018-02-01 CN CN201820176811.0U patent/CN207720422U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108093379A (en) * | 2018-02-01 | 2018-05-29 | 深圳市泰比特科技有限公司 | A kind of train door monitor terminal and its system based on LoRa |
| CN108093379B (en) * | 2018-02-01 | 2024-01-26 | 深圳市泰比特科技有限公司 | Train door monitoring terminal based on loRa and train door monitoring system based on loRa |
| CN108834096A (en) * | 2018-08-27 | 2018-11-16 | 南京新联电子股份有限公司 | A kind of gateway terminal for environment protection digital monitoring acquisition |
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