CN106697005B - The unmanned Synthetical prevention system in level crossing - Google Patents
The unmanned Synthetical prevention system in level crossing Download PDFInfo
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- CN106697005B CN106697005B CN201611089315.3A CN201611089315A CN106697005B CN 106697005 B CN106697005 B CN 106697005B CN 201611089315 A CN201611089315 A CN 201611089315A CN 106697005 B CN106697005 B CN 106697005B
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- 230000001939 inductive effect Effects 0.000 claims abstract description 49
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- 230000002159 abnormal effect Effects 0.000 claims description 42
- 238000001514 detection method Methods 0.000 claims description 11
- 230000005856 abnormality Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 6
- 230000006698 induction Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/007—Safety arrangements on railway crossings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/08—Operation of gates; Combined operation of gates and signals
- B61L29/18—Operation by approaching rail vehicle or train
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
- B61L29/28—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
- B61L29/32—Timing, e.g. advance warning of approaching train
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L2205/00—Communication or navigation systems for railway traffic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The present invention proposes a kind of unmanned Synthetical prevention system in level crossing, includes at least: carrying out vehicle inductive pick-up, hangs up sensor, information detecting unit, central control unit and crossing protection automatic unit；It is described come vehicle inductive pick-up be set to mid-block inlet, to sense the train for coming road junction, carry out vehicle information to generate；The sensor of hanging up is set to mid-block exit, to incude the train for leaving road junction, to generate hook information；Information detecting unit connection is described vehicle inductive pick-up and to hang up sensor, acquire it is described come vehicle information and hook information, and generate and on transmit vehicle signal and hang-up signal；The central control unit connects the information detecting unit, controls the crossing protection automatic unit in response to carrying out vehicle signal and executes protection to mid-block, the crossing protection automatic unit is controlled in response to hang-up signal and hangs up protection.Realize the unmanned of crossing protection system, automation and reliability.
Description
Technical field
The present invention relates to the unmanned Synthetical preventions in level crossing Control Technology field more particularly to a kind of level crossing
System.
Background technique
Along Railway crossing equipment operating status and security protection are an important process of railroad safety management, direct shadow
Ring railway operation safety.The routine safety pipe of the equipment fault of railway level-crossing and road junction foreign car and walk
Reason is to influence one of the key factor of railway operation safety.The crossing safety accident occurred by human factor is commonplace, frequency
Numerous generation road junction injures and deaths event, has seriously affected railway operation safety, and crossing safety situation is increasingly serious.
Attended mode crossing safety facility type is more at present, and respectively at system, part facility is not able to achieve automation, dress
Standby mainly to have: level crossing driving phone, the automatic notification signal in road junction, road junction solar energy radio alarm, road junction failure is wireless
The multiplexed combinations such as alarm, road machine joint control, road junction Train Approaching and operation video monitoring system, road junction electronic police.It needs artificial
Operating trouble warning device, thus cause road junction conevying efficiency low, also increase the security risk at road junction to a certain extent.
For the effect for giving full play to all kinds of crossing safety facilities, it is necessary to set about from technical precaution, break through original framework, newly to think
A set of unmanned crossing safety Synthetical prevention system that can effectively prevent level crossing accident generation is developed on road.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of unmanned Synthetical prevention systems in level crossing, realize road junction
The unmanned of protection system, automation and reliability.
To solve the above problems, the present invention proposes a kind of unmanned Synthetical prevention system in level crossing, includes at least: carrying out vehicle
Inductive pick-up hangs up sensor, information detecting unit, central control unit and crossing protection automatic unit；
It is described come vehicle inductive pick-up be set to mid-block inlet, to sense the train for coming road junction, with generate
Carry out vehicle information；The sensor of hanging up is set to mid-block exit, to incude the train for leaving road junction, is hung up with generating
Information；
Information detecting unit connection is described vehicle inductive pick-up and to hang up sensor, acquire it is described come vehicle information and
Hook information, and generate and on transmit vehicle signal and hang-up signal；The central control unit connects the information detecting unit,
It controls the crossing protection automatic unit in response to carrying out vehicle signal and protection is executed to mid-block, controlled in response to hang-up signal
It makes the crossing protection automatic unit and hangs up protection.
According to one embodiment of present invention, be arranged on every path it is described come vehicle inductive pick-up be at least two,
It is spaced certain safe distance arrangement.
According to one embodiment of present invention, the information detecting unit is continuous or collects within the certain intervals time complete
What portion carried out vehicle inductive pick-up carrys out vehicle information, then generate and on transmit vehicle signal, otherwise do not generate.
According to one embodiment of present invention, the interval time be every two come vehicle inductive pick-up interval safety away from
From the quotient with train running speed.
According to one embodiment of present invention, be successively intervally arranged on every path along current of traffic it is described come vehicle sense
Inductive sensing device and hang up sensor；It is described come vehicle inductive pick-up induction train headstock and generate it is described come vehicle information；It is described
It hangs up the tailstock of sensor sensing train and generates the hook information.
According to one embodiment of present invention, further includes: mid-block abnormality detecting unit and wireless abnormal alarm unit；
The mid-block abnormality detecting unit connects the central control unit, to detect the road junction executed under protection state
Whether protection automatic unit has abnormal operation, and the abnormal signal that will test abnormal operation and generate is transferred to the center control
Unit processed；The central control unit connects the wireless abnormal alarm unit, receive be transmitted to after the abnormal signal it is described
Wireless abnormal alarm unit carries out radio alarming.
According to one embodiment of present invention, the mid-block abnormality detecting unit includes: that control chip and angle pass
Sensor；The angular transducer is set in the executing agency of the crossing protection automatic unit, detects the angle of executing agency
And be transmitted in the control chip, the control chip detects angle change and generates the abnormal signal.
According to one embodiment of present invention, the wireless abnormal alarm unit includes: control terminal radio unit, train
Hold radio unit and warning device；The control terminal radio unit connects the central control unit, receives and sends institute
Abnormal signal is stated to train end radio unit；Train end radio unit connects control terminal radio unit and institute
Warning device is stated, is received and is transmitted to the warning device after the abnormal signal and alarms.
According to one embodiment of present invention, further include video evidence obtaining unit, connect the central control unit；In described
Centre control unit also controls the video evidence obtaining unit when generating the abnormal signal and obtains and store road junction image information.
According to one embodiment of present invention, further include equipment fault SMS alarm unit, it is single to connect the center control
Member；The each unit connecting with the central control unit has the function of redundancy detection, carries out self-test and will test information to be transferred to
Central control unit；The central control unit detect its connection each unit interface or operation it is whether normal, if occur therefore
Barrier then controls the equipment fault SMS alarm unit transmitting short message to specified mobile terminal.
According to one embodiment of present invention, further include road junction acousto-optic prewarning unit, connect the central control unit；Institute
State central control unit be additionally in response to it is described come vehicle signal and/or hang-up signal and trigger the road junction acousto-optic prewarning unit and carry out
Early warning.
According to one embodiment of present invention, further include Power Management Unit, connect the central control unit, mentioned for it
For input power.
After adopting the above technical scheme, the present invention has the advantages that compared with prior art
It is arranged on the direction to the car of road junction and carrys out vehicle inductive pick-up, automatic detection carrys out vehicle information, connects in central control unit
It receives after carrying out vehicle information, roadway gate (or column door) is automatically closed and plays the role of security protection；Also set up in the train side of sailing out of
Sensor is hung up, after train, which crosses, hangs up sensor, central control unit reception hang-up signal, automatic opening roadway gate (or column
Door), realize unmanned, automation control；
Achievable road junction picks up the automation control of operation and the record of job information；
It realizes the unmanned of crossing protection system, automation and reliability, further increases road junction one and plow train work
Standardization level reduces crossing safety accident Probability effectively to take precautions against the generation of crossing safety accident；
Acousto-optic prewarning unit in road junction is set, automatic early-warning function can be triggered, automatic trigger highway signs lamp reminds road
Vehicle, pedestrian avoid train；
At least two are equipped in direction to the car and carrys out vehicle inductive pick-up, can be detected automatically and be carried out vehicle information, play at least double
Protective effect again, avoid the problem that due to train running speed is too fast and one acquisition less than；Ensure that information is accurate, according to carrying out vehicle
The arrangement distance and vehicle driving distance of inductive pick-up judge whether signal is correct, prevent from detecting malfunction after Operation Van
Make, avoids erroneous detection；
Have the function of automatically detect and differentiate road junction failure, when road junction danger zone abnormal intrusion, can automatic discrimination,
And/or Image Acquisition, and automatic alarm, and/or video evidence obtaining vehicle violation and fault upload.
Detailed description of the invention
Fig. 1 is the structural block diagram of the unmanned Synthetical prevention system in level crossing of one embodiment of the invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention.But the present invention can be with
Much it is different from other way described herein to implement, those skilled in the art can be without prejudice to intension of the present invention the case where
Under do similar popularization, therefore the present invention is not limited to the specific embodiments disclosed below.
Referring to Fig. 1, in one embodiment, the unmanned Synthetical prevention system in level crossing includes: to carry out vehicle inductive pick-up
(101,201,102,202) are hung up sensor (301,302), information detecting unit 5, and central control unit 6 and crossing protection are certainly
Moving cell 8.Railway generally has two or more path, and the road I Dao He II as shown in figure 1 is with the road I therein below
Example is described in detail.
Carrying out vehicle inductive pick-up 101,201 and is set to the road I mid-block inlet, induction will enter the train at road junction,
The information that acquisition train arrives carrys out vehicle information to generate, in one embodiment, when train head is by carrying out vehicle inductive pick-up
101,201 when, come after vehicle inductive pick-up 101,201 senses to be transmitted to information detecting unit 5 by radio antenna.Information inspection
It surveys the connection of unit 5 and carrys out vehicle inductive pick-up 101,201, the vehicle information generation that comes that acquisition carrys out vehicle inductive pick-up 101,201 carrys out vehicle
Signal is transferred to central control unit 6.6 link information detection unit 5 of central control unit, controls in response to carrying out vehicle signal
Mouth protection automatic unit 8 executes protection to mid-block.
It hangs up sensor 301 and is set to the road I mid-block exit, acquisition train leaves the information at road junction, and induction is left
The train at road junction is to generate hook information, in one embodiment, hangs up sensor 301 when last vehicle of train exits through completely
When, it hangs up sensor 301 and information detecting unit is transmitted to by radio antenna.Sensor is hung up in the connection of information detecting unit 5
301, the hook information that sensor 301 is hung up in acquisition generates hang-up signal and is transferred to central control unit 6.Central control unit 6
Link information detection unit 5 controls crossing protection automatic unit 8 in response to hang-up signal and hangs up protection.
Crossing protection automatic unit 8 is, for example, railing or column door and its motion driving mechanism.Receive carry out vehicle signal when, in
It entreats 6 control action driving mechanism of control unit to close railing or column door, pedestrian or vehicle is prevented to pass through.Receiving hang-up signal
When, 6 control action driving mechanism of central control unit starts railing or column door, lets pass.
Carry out vehicle inductive pick-up 101,201 and hang up sensor 301 all be proximity sensor, but not limited to this, also
Can be other can incude the sensor for generating signal, and certain induction component can be arranged ON TRAINS when needed.
It is arranged on the direction to the car of road junction and carrys out vehicle inductive pick-up 101,201, automatic detection carrys out vehicle information, controls in center
Unit 6 receives carry out vehicle information after, railing (or column door) is automatically closed and plays the role of security protection；Also direction is sailed out of in train
Sensor 301 is hung up in upper setting, and after train, which crosses, hangs up sensor 301, central control unit 6 receives hang-up signal, automatically
It opens railing (or column door), realizes unmanned, automation control.Full-automatic linkage control is, it can be achieved that road junction picks up oneself of operation
Dynamicization control, central control unit 6 can also carry out vehicle information to road junction and record, and realize the full-automatic record of job information.
In one embodiment, the vehicle inductive pick-up that comes being arranged on every path is at least two, is spaced certain safety
Distance arrangement.Information detecting unit 5 it is continuous or collected within the certain intervals time all carry out vehicle inductive pick-up carry out vehicle letter
Breath, then generate and on transmit vehicle signal, otherwise do not generate.Interval time be every two come vehicle inductive pick-up interval safety away from
From the quotient with train running speed.Be arranged on every path when carrying out vehicle inductive pick-up greater than two, each adjacent two sensing
In the acquisition time interval of device, at least one meets interval time, can determine that it is train arrival.
At least two are equipped in direction to the car and carrys out vehicle inductive pick-up, can be detected automatically and be carried out vehicle information, play at least double
Protective effect again, avoid the problem that due to train running speed is too fast and one acquisition less than；Ensure that information is accurate, according to carrying out vehicle
The arrangement distance and vehicle driving distance of inductive pick-up judge whether signal is correct, prevent from detecting malfunction after Operation Van
Make, avoids erroneous detection.
In Fig. 1, the vehicle inductive pick-up that comes being arranged on every path comes vehicle inductive pick-up 101 and second including first
Carry out vehicle inductive pick-up 201, but not limited to this.First carrys out the information that vehicle inductive pick-up 101 acquires train arrival first, works as column
Headstock by first come vehicle inductive pick-up 101 when, first come after vehicle inductive pick-up 101 senses by radio antenna transmit
To information detecting unit 5.Second carrys out information and the transmission that vehicle inductive pick-up 201 acquires train arrival again, it is ensured that carrys out vehicle information
It is accurate, second that auxiliary protection can be played the role of when accident or failure occurs in vehicle inductive pick-up 201.Due to train row
Sail that speed is very fast, thus first carrys out vehicle inductive pick-up 101 and second when carrying out the information collection between vehicle inductive pick-up 201
Between be spaced very short, can be considered as continuous, the distance between sensor and column determine the acquisition interval time at travel speed, when
When the time interval of actual acquisition is greater than the interval time, information detecting unit 5 can determine that the acquisition information is not to carry out vehicle letter
Breath, does not generate and carrys out vehicle signal, when e.g. working truck crosses, speed is avoided far away from train because carrying out vehicle signal without generating
False alarm or malfunction.
In one embodiment, the unmanned Synthetical prevention system in level crossing can also include road junction acousto-optic prewarning unit 7.
Road junction acousto-optic prewarning unit 7 connects central control unit 6.Central control unit 6 is additionally in response to come vehicle signal and/or hang-up signal
And it triggers road junction acousto-optic prewarning unit 7 and carries out early warning.Central control unit 6, which receives, carrys out vehicle signal, controls road junction acousto-optic early warning list
Member 7 realizes the movement of road junction loudspeaker and roadway sign when carrying out vehicle, and road vehicle, pedestrian is reminded to avoid train.Central control unit
6 receive hang-up signal, control road junction acousto-optic prewarning unit 7, realize the movement of road junction loudspeaker and roadway sign when carrying out vehicle, remind road
Road vehicles, pedestrian's P Passable.
In one embodiment, it is successively intervally arranged on every path along current of traffic and comes vehicle inductive pick-up and extension
Link sensor, such as in Fig. 1, the driving direction in the road I are from right to left, thus to carry out vehicle inductive pick-up 101,201 and hang up
Sensor 301 is arranged from right to left, the road II it is then on the contrary.For it is each come vehicle inductive pick-up for, train can be incuded
Headstock and generate and carry out vehicle information.The tailstock of train can be incuded and generate hook information by hanging up sensor.
In one embodiment, with continued reference to Fig. 1, the unmanned Synthetical prevention system in level crossing can also include road mouth region
Between abnormality detecting unit 9 and wireless abnormal alarm unit 10, can detecte mid-block when carrying out vehicle, whether there is or not abnormal operations, there is Times
It is alert.Mid-block abnormality detecting unit 9 connects central control unit 6, to detect the crossing protection under execution protection state certainly
Whether moving cell 8 has abnormal operation, and the abnormal signal that will test abnormal operation and generate is transferred to central control unit 6.
Central control unit 6 connects wireless abnormal alarm unit 10, receive be transmitted to after abnormal signal wireless abnormal alarm unit 10 into
Row radio alarming.
Mid-block abnormality detecting unit 9 may include: control chip and angular transducer.Angular transducer is set to road junction
It protects in the executing agency of automatic unit 8, detect the angle of executing agency and is transmitted in control chip, control chip detection
Abnormal signal is generated to angle change.Angular transducer is, for example, gyroscope, is arranged on railing or column door, with railing or
The movement of column door and move, to sense corresponding angle change, when mid-block is swarmed into extremely, railing or column door are lifted
It rises, gyroscope is servo-actuated to generate angle change, and control chip detects angle change to generate abnormal signal, by wireless abnormal report
Alert unit 10 is responsible for alarm.
Wireless abnormal alarm unit 10 may include: control terminal radio unit, train end radio unit and alarm dress
It sets.Control terminal radio unit connects central control unit 6, receives and sends abnormal signal to train end radio unit.Column
Vehicle end radio unit connects control terminal radio unit and warning device, receive be transmitted to after abnormal signal warning device into
Row alarm, reminds train operator to do slow down or parking process, avoids the occurrence of accident.
In one embodiment, the unmanned Synthetical prevention system in level crossing can also include video evidence obtaining unit 11.Depending on
Frequency evidence obtaining unit 11 connects central control unit 6.For central control unit 6 when generating abnormal signal, also the evidence obtaining of control video is single
Member 11 obtains and stores road junction image information.When road junction danger zone abnormal intrusion, can automatic discrimination and Image Acquisition, and it is automatic
Alarm passes through the abnormal vehicle violation of video evidence obtaining and abnormal upload.
In one embodiment, the unmanned Synthetical prevention system in level crossing can also include equipment fault SMS alarm list
Member 12.Equipment fault SMS alarm unit 12 connects central control unit 6.The each unit connecting with central control unit 6 has
Redundancy detection function carries out self-test and will test information to be transferred to central control unit 6；Central control unit 6 detects its connection
Each unit interface or operation it is whether normal, if break down if control 12 transmitting short message of equipment fault SMS alarm unit extremely
Specified mobile terminal.Equipment fault and warning message are sent to crossing management person by equipment fault SMS alarm unit 12, are used to
Crossing management person is reminded to be safeguarded and implemented corresponding emergency measure.
In one embodiment, the unmanned Synthetical prevention system in level crossing can also include Power Management Unit 4.Power supply
Administrative unit 4 connects central control unit 6, provides input power for it, guarantees that the work of all units can be normally carried out.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting claim, any this field
Technical staff without departing from the spirit and scope of the present invention, can make possible variation and modification, therefore of the invention
Protection scope should be subject to the range that the claims in the present invention are defined.
Claims (4)
1. a kind of unmanned Synthetical prevention system in level crossing, which is characterized in that include at least: carrying out vehicle inductive pick-up, hang up
Sensor, information detecting unit, central control unit and crossing protection automatic unit；
It is described come vehicle inductive pick-up be set to mid-block inlet, to sense the train for coming road junction, carry out vehicle to generate
Information；The sensor of hanging up is set to mid-block exit, to incude the train for leaving road junction, hangs up letter to generate
Breath；
Information detecting unit connection is described vehicle inductive pick-up and to hang up sensor, acquires described vehicle information and hang up
Information, and generate and on transmit vehicle signal and hang-up signal；The central control unit connects the information detecting unit, response
It controls the crossing protection automatic unit in carrying out vehicle signal and protection is executed to mid-block, institute is controlled in response to hang-up signal
It states crossing protection automatic unit and hangs up protection；
Be arranged on every path it is described come vehicle inductive pick-up be at least two, be spaced the arrangement of certain safe distance；
The information detecting unit it is continuous or collected within the certain intervals time all carry out vehicle inductive pick-up carry out vehicle information,
Then generate and on transmit vehicle signal, otherwise do not generate；
The interval time is that every two comes the safe distance at vehicle inductive pick-up interval and the quotient of train running speed；
Further include: mid-block abnormality detecting unit and wireless abnormal alarm unit；The mid-block abnormality detecting unit connects
The central control unit is connect, to detect whether the crossing protection automatic unit executed under protection state has exception dynamic
Make, and the abnormal signal that will test abnormal operation and generate is transferred to the central control unit；The central control unit
The wireless abnormal alarm unit is connected, is transmitted to the wireless abnormal alarm unit progress wirelessly after receiving the abnormal signal
Alarm；
The mid-block abnormality detecting unit includes: control chip and angular transducer；The angular transducer is set to described
In the executing agency of crossing protection automatic unit, detects the angle of executing agency and be transmitted in the control chip, it is described
Control chip detects angle change and generates the abnormal signal；
Further include video evidence obtaining unit, connects the central control unit；The central control unit is generating the abnormal letter
Number when also control video evidence obtaining unit and obtain and store road junction image information；
Further include equipment fault SMS alarm unit, connects the central control unit；It is connect with the central control unit
Each unit has the function of redundancy detection, carries out self-test and will test information to be transferred to central control unit；The center control is single
Whether the interface of each unit of its connection of member detection or operation are normal, control the equipment fault SMS alarm if breaking down
Unit transmitting short message is to specified mobile terminal；
Further include road junction acousto-optic prewarning unit, connects the central control unit；The central control unit is additionally in response to described
Come vehicle signal and/or hang-up signal and triggers the road junction acousto-optic prewarning unit and carry out early warning.
2. the unmanned Synthetical prevention system in level crossing as described in claim 1, which is characterized in that along train on every path
Traffic direction, which is successively intervally arranged, described vehicle inductive pick-up and hangs up sensor；It is described come vehicle inductive pick-up incude train
Headstock and generate it is described come vehicle information；The tailstock for hanging up sensor sensing train and generate the hook information.
3. the unmanned Synthetical prevention system in level crossing as described in claim 1, which is characterized in that the wireless abnormal alarm
Unit includes: control terminal radio unit, train end radio unit and warning device；The control terminal radio unit connection
The central control unit receives and sends the abnormal signal to train end radio unit；The train end is wireless
Electric unit connects control terminal radio unit and the warning device, is transmitted to the alarm dress after receiving the abnormal signal
It sets and alarms.
4. the unmanned Synthetical prevention system in level crossing as described in claim 1, which is characterized in that further include power management list
Member, connects the central control unit, provides input power for it.
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| CN201611089315.3A CN106697005B (en) | 2016-11-30 | 2016-11-30 | The unmanned Synthetical prevention system in level crossing |
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| CN106697005A (en) | 2017-05-24 |
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Denomination of invention: Unmanned comprehensive prevention and control system for railway crossings Granted publication date: 20181225 Pledgee: Huangpu Sub branch of Bank of Shanghai Co.,Ltd. Pledgor: SHANGHAI ORIENTAL MARITIME ENGINEERING TECHNOLOGY Co.,Ltd. Registration number: Y2024310000150 |
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