CN108252612B - BRT (bus rapid transit) door and safety door linkage system based on RFID (radio frequency identification) and control method thereof - Google Patents
BRT (bus rapid transit) door and safety door linkage system based on RFID (radio frequency identification) and control method thereof Download PDFInfo
- Publication number
- CN108252612B CN108252612B CN201611235656.7A CN201611235656A CN108252612B CN 108252612 B CN108252612 B CN 108252612B CN 201611235656 A CN201611235656 A CN 201611235656A CN 108252612 B CN108252612 B CN 108252612B
- Authority
- CN
- China
- Prior art keywords
- door
- rfid
- vehicle
- brt
- rfid tag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000002955 isolation Methods 0.000 claims abstract description 4
- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 230000007613 environmental effect Effects 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004092 self-diagnosis Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/77—Power-operated mechanisms for wings with automatic actuation using wireless control
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/71—Power-operated mechanisms for wings with automatic actuation responsive to temperature changes, rain, wind or noise
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/65—Power or signal transmission
- E05Y2400/66—Wireless transmission
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/506—Application of doors, windows, wings or fittings thereof for vehicles for buses
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Type of wing
- E05Y2900/531—Doors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a BRT (bus rapid transit) door and safety door linkage system based on RFID (radio frequency identification) and a control method thereof, wherein the BRT door and safety door linkage system comprises a vehicle-mounted RFID label adopting a separate antenna, the vehicle-mounted RFID label is placed in a bus instrument panel in a PCB (printed circuit board) packaging manner, and a power supply, an I/O (input/output) signal port and an antenna port for installing the separate antenna are reserved on the PCB; the power supply adopts a DC/DC isolation module and is isolated from the vehicle-mounted power supply; the I/O signal port integrates a vehicle door opening and closing command signal, a platform door opening and closing in-place state signal and a wireless transmission state signal; and the RFID tag reader is arranged in the fixed side box of the platform door, adopts a built-in antenna and is connected with the PLC by adopting a direct outgoing cable. The invention is easy to install, has reliable communication, effectively prevents misoperation of passengers, and can meet the safe use in different weather environments.
Description
Technical Field
The invention relates to a wireless linkage system of a vehicle safety door and a control method thereof, in particular to a BRT (bus rapid transit) door and safety door linkage system based on RFID (radio frequency identification) and a control method thereof.
Background
The BRT is a novel public passenger transport system between Rapid Rail Transit (Rapid Rail Transit) and Normal public Transit (Normal bus Transit), is a medium-traffic transportation mode, and is also commonly called as 'subway on the ground'.
On the BRT platform, a security gate is provided as a security barrier between the incoming and outgoing bus vehicles and the platform passenger area. When the bus is stopped stably, a driver presses a corresponding door opening button according to the actual situation, and the safety door corresponding to the door is opened synchronously; after the passengers finish getting on or off the bus, the driver presses the bus door closing button according to the conditions of the bus door and the corresponding platform door, and the safety door corresponding to the bus door is synchronously closed at the moment. After the driver confirms the safety, the driver can normally leave the bus and get out of the bus.
The linkage between the BRT door and the platform door is realized by the technical principle of Radio Frequency Identification (RFID). The following technical difficulties mainly exist:
1. compared with a subway or a light rail, the system has no special signal system, the parking precision of the bus after arriving at the station is ensured by the operation of each driver, and relatively speaking, the consistency is not easy to ensure;
2. compared with a subway or a light rail, the special signal system is not provided, and the linkage scheme of the bus door and the platform door after the bus arrives at the station is that the bidirectional transmission of signals is directly established through a wireless technology;
3. compared with a subway or a light rail, the 'openness' of the physical space of the BRT platform is more flexible and changeable, the platform has a wider contact surface with an external public area, various vehicles, pedestrians, different types of articles and the like can invade the public area, and the difficulty is increased for the reliability of wireless signal transmission;
4. in the aspect of hardware configuration of an RFID system, a tag needs to be placed at a proper position on a bus, a reader needs to be placed at a proper position on a platform door, and the physical installation positions of the tag and the reader need to consider the reliability of wireless transmission distance, integrate the aesthetic degree and prevent passenger misoperation and other factors
5. The problem how to ensure the reliability of wireless transmission under different layouts of stations on site and different weather environments (wind, rain, snow, thunder, noise, wireless signal interference of different frequency bands and the like) is a big problem.
Disclosure of Invention
The invention aims to provide a BRT (bus rapid transit) door and safety door linkage system based on RFID (radio frequency identification) and a control method thereof, which are easy to install, reliable in communication, capable of effectively preventing misoperation of passengers and capable of meeting safe use under different weather environments.
The invention provides a BRT (bus rapid transit) door and safety door linkage system based on RFID (radio frequency identification), which solves the technical problems and comprises a vehicle-mounted RFID tag, wherein the vehicle-mounted RFID tag adopts a separate antenna, the vehicle-mounted RFID tag is placed in a bus instrument panel in a PCB (printed circuit board) packaging manner, and a power supply, an I/O (input/output) signal port and an antenna port for mounting the separate antenna are reserved on the PCB; the power supply adopts a DC/DC isolation module and is isolated from the vehicle-mounted power supply; the I/O signal port integrates a vehicle door opening and closing command signal, a platform door opening and closing in-place state signal and a wireless transmission state signal; the RFID tag reader is arranged in the platform door fixed side box, adopts a built-in antenna and is connected with the PLC by adopting a direct outgoing cable.
According to the BRT door and safety door linkage system based on the RFID, the vehicle-mounted RFID tag adopts two frequency ranges of low frequency 125KHZ and high frequency 2.4GHZ, and the low frequency 125KHZ is used for signal control of a near-distance door and a platform door and feedback of the state of the platform door; the high frequency 2.4GHZ is used for information transmission for remotely identifying the bus vehicle entering and exiting.
According to the BRT vehicle door and safety door linkage system based on the RFID, the direct outgoing cables are respectively an I/O control line and a communication line, and the I/O control line and the communication line form a redundant double-check system in control.
The number of the RFID tag readers is multiple, and the RFID tag readers are arranged along the traveling direction of the bus.
The invention also provides a control method of the BRT vehicle door and safety door linkage system based on RFID, which comprises the following steps: when the vehicle-mounted RFID label enters a signal receiving area of an RFID label reader on a platform, the RFID label readers gather received gradually-changed signals into a PLC (programmable logic controller) at the same time; the PLC compares the magnetic field energy intensity received by the RFID tag readers at the same time, selects the RFID tag reader with the strongest received signal as the uniquely matched reader, and shields other RFID tag readers arranged in the magnetic field overlapping cross area.
According to the control method of the BRT door and safety door linkage system based on the RFID, the PLC records and stores the historical magnetic field energy peak value, the preset peak value can be dynamically adjusted according to the historical magnetic field energy peak value, so that the vehicle-mounted RFID tag and the corresponding RFID tag reader are normally paired, and after the pairing is successful, the temporarily and dynamically adjusted preset peak value enters the historical peak value storage area.
According to the control method of the BRT door and safety door linkage system based on the RFID, the PLC acquires field environment parameters, and when the environmental factor distortion factor occurs, the historical magnetic field energy peak value is called to realize matching of the vehicle-mounted RFID tag and the RFID tag reader.
In the control method of the BRT door and safety door linkage system based on the RFID, the environmental factor distortion factor is wind, snow, rain, fog, sand storm or blocking by random obstacles.
Compared with the prior art, the invention has the following beneficial effects: according to the BRT (bus rapid transit) door and safety door linkage system based on the RFID and the control method thereof, the vehicle-mounted RFID tag of the separated antenna and the RFID tag reader arranged in the platform door fixed side box are adopted, so that any position and angle of the antenna can be conveniently adjusted, the system is easy to install, and misoperation of passengers is effectively prevented; the I/O signal port integrates a vehicle door opening and closing command signal, a platform door opening and closing in-place state signal, a wireless transmission state signal and the like, and the communication is reliable; the matching of the vehicle-mounted RFID label and the RFID label reader is realized by recording and storing the historical magnetic field energy peak value through the PLC, so that the safe use under different weather environments is met.
Drawings
Fig. 1 is a schematic diagram of an architecture of a BRT door and security gate linkage system based on RFID according to the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
Fig. 1 is a schematic diagram of an architecture of a BRT door and security gate linkage system based on RFID according to the present invention.
Referring to fig. 1, the BRT car door and security gate linkage system based on RFID according to the present invention includes:
the bus label is placed in an instrument panel in a PCB packaging mode, and a power supply, an I/O signal port and an antenna port are reserved. The power supply adopts a DC/DC isolation module, and is isolated from the vehicle-mounted power supply, so that the vehicle-mounted power supply of different vehicles can be matched; the I/O signal port integrates a door opening and closing command signal of a vehicle door, a station door opening and closing in-place state signal, a wireless transmission state signal and the like, so that the number of the I/O ports can be increased at will; the antenna can be arranged in a separated mode from a label in the instrument panel through the antenna port, and therefore any position and angle of the antenna can be adjusted conveniently.
The platform door reader is placed in a platform door fixed side box, the antenna is built in, and the cable adopts a direct outgoing mode and is an I/O control line and a communication line respectively. The I/O control line and the communication line form a redundant double-check system in control, namely, signals transmitted to the platform door through wireless transmission between the vehicle-mounted tag and the reader can be transmitted through an I/O hard line or a communication mode. The I/O and the communication of the reader are gathered to the PLC, the magnetic field energy peak value can be dynamically adjusted through the PLC self-adaptive algorithm, and the platform door opening and closing signal and the platform door opening and closing in-place state signal can be stably output.
In order to adapt to different platform layouts and different environmental conditions and reduce the workload of field installation and debugging, the peak value of the energy of the wireless electromagnetic field between the reader and the tag is dynamically adjusted through a self-adaptive algorithm. The tag adopts two frequency ranges of low frequency 125KHZ and high frequency 2.4GHZ, wherein the low frequency 125KHZ is used for signal control of close-distance vehicle doors and platform door state feedback; the high frequency 2.4GHZ is used for information transmission for remotely identifying the bus vehicle entering and exiting.
Because the bus-mounted tag follows the bus, the reader is fixedly arranged in the platform door. According to the actual arrangement condition of the platform door on site, more than 1 set of readers can be arranged, so that when the tags enter different reader areas, door opening and closing commands sent by the tags can be read by different readers at the same time and respond, and in this case, the false operation of the non-corresponding platform door can be caused.
Aiming at the problem, the invention provides the following control processing method:
1. when the tags enter the magnetic field ranges of different readers, the readers transmit the gradually changed energy values to the PLC in real time through the serial port bus;
2. the PLC controller makes a self-adaptive dynamic algorithm function packet for each set of reader, and the function packet compares signals of other readers in real time except for carrying out logic algorithm control on signals of the reader per se;
3. compared with 2 sets of readers 1# and 2# with different installation positions, when the vehicle-mounted tag enters the 1# and 2# areas, the energy intensity of the magnetic field read by the 1# and 2# readers is gradually changed, the 1# and 2# readers gather the two different gradually-changed signals into a PLC (programmable logic controller), and the PLC calls an adaptive dynamic algorithm function packet to determine which unique physically corresponding reader should act when the bus is in a parking space, so that the other reader installed in the magnetic field overlapping cross area is shielded, and the matching of the vehicle-mounted tag and the unique reading in the adjacent area is realized;
4. when the 'environmental factor distortion', such as wind, snow, rain, fog, sand storm, random obstacle blocking and other factors, occurs in the area space where the vehicle-mounted tag and the reader are located, the 'adaptive dynamic algorithm function packet' in the PLC dynamically adjusts the preset peak value according to the historical magnetic field energy peak value, so that the tag can be normally paired with the corresponding reader, after the pairing is successful, the temporarily and dynamically adjusted preset peak value enters a historical peak value storage area, and when the 'environment' is similar to the 'environment', the value can be quickly called and the matching between the tag and the reader can be realized;
5. the function can also be used for daily diagnosis of two hardware faults, namely a reader and a tag, a large number of real field 'environmental parameters' are preset and dynamically stored in a storage area of a 'self-adaptive dynamic algorithm function packet', and tend to be exhaustive, so when the hardware self-diagnosis function is put into use, if parameters tending to be exhaustive cannot realize the pairing of the tag and the reader, a fault signal is automatically sent by a PLC, and whether the tag fault or the reader fault is determined;
6. regarding the function of self-diagnosis hardware faults, when more than 2 sets of readers are arranged on site, the readers can serve as redundant mutually-judged bridges to rapidly distinguish whether the vehicle-mounted tag entering the area is in fault or not.
Although the present invention has been described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A control method of a BRT (bus brake for railway) door and safety door linkage system based on RFID (radio frequency identification) is characterized in that the linkage system comprises the following steps:
the vehicle-mounted RFID tag adopts a separated antenna, is placed in a bus instrument panel in a PCB packaging mode, and is provided with a power supply, an I/O signal port and an antenna port for mounting the separated antenna in advance; the power supply adopts a DC/DC isolation module and is isolated from the vehicle-mounted power supply; the I/O signal port integrates a vehicle door opening and closing command signal, a platform door opening and closing in-place state signal and a wireless transmission state signal;
the RFID tag reader is arranged in a fixed side box of the platform door, adopts a built-in antenna and is connected with the PLC by adopting a direct outgoing cable;
the number of the RFID tag readers is multiple, and the RFID tag readers are arranged along the traveling direction of the bus;
the control method comprises the following steps:
when the vehicle-mounted RFID label enters a signal receiving area of an RFID label reader on a platform, the RFID label readers gather received gradually-changed signals into a PLC (programmable logic controller) at the same time;
the PLC compares the magnetic field energy intensity received by the RFID tag readers at the same time, selects the RFID tag reader with the strongest received signal as the uniquely matched reader, and shields other RFID tag readers arranged in the magnetic field overlapping cross area.
2. The method for controlling the BRT door and security gate linkage system based on RFID as claimed in claim 1, wherein the vehicle RFID tag adopts two frequency bands of low frequency 125KHZ and high frequency 2.4GHZ, the low frequency 125KHZ is used for the signal control of the close range door and the platform door and the status feedback of the platform door; the high frequency 2.4GHZ is used for information transmission for remotely identifying the bus vehicle entering and exiting.
3. The method for controlling the BRT door and safety door linkage system based on RFID according to claim 1, wherein the direct outgoing cables are an I/O control line and a communication line, respectively, and the I/O control line and the communication line constitute a redundant double check system in control.
4. The method for controlling the BRT (bus rapid transit) door and safety door linkage system based on the RFID as claimed in claim 1, wherein the PLC records and stores the energy peak value of the historical magnetic field, and dynamically adjusts the preset peak value according to the energy peak value of the historical magnetic field, so that the vehicle-mounted RFID tag and the corresponding RFID tag reader are normally paired, and after the pairing is successful, the temporarily and dynamically adjusted preset peak value enters the historical peak value storage area.
5. The method for controlling the BRT (bus rapid transit) door and safety door linkage system based on the RFID as claimed in claim 4, wherein the PLC acquires field environment parameters, and when an environment factor distortion factor occurs, the historical magnetic field energy peak value is called to realize matching of the vehicle-mounted RFID tag and the RFID tag reader.
6. The method of controlling an RFID-based BRT door and security gate interlock system of claim 5, wherein the environmental factor distortion factor is wind, snow, rain, fog, sand storm, or random obstruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235656.7A CN108252612B (en) | 2016-12-28 | 2016-12-28 | BRT (bus rapid transit) door and safety door linkage system based on RFID (radio frequency identification) and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235656.7A CN108252612B (en) | 2016-12-28 | 2016-12-28 | BRT (bus rapid transit) door and safety door linkage system based on RFID (radio frequency identification) and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108252612A CN108252612A (en) | 2018-07-06 |
| CN108252612B true CN108252612B (en) | 2020-02-07 |
Family
ID=62720009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611235656.7A Active CN108252612B (en) | 2016-12-28 | 2016-12-28 | BRT (bus rapid transit) door and safety door linkage system based on RFID (radio frequency identification) and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108252612B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637180B (en) * | 2018-12-07 | 2021-01-29 | 航天信息股份有限公司 | Bus stop reporting device, system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013086578A1 (en) * | 2011-12-15 | 2013-06-20 | Multiskilled Resources Australia Pty Ltd | Rail car operating condition and identity monitoring system |
| CN203570095U (en) * | 2013-11-30 | 2014-04-30 | 四川久远新方向智能科技有限公司 | BRT (bus rapid transit) safety door capable of supporting wireless remote control function |
| US8717154B2 (en) * | 2011-04-11 | 2014-05-06 | Chi Mei Communication Systems, Inc. | Computing device and method of automobile control |
| CN203819231U (en) * | 2014-04-17 | 2014-09-10 | 上海嘉成轨道交通安全保障系统有限公司 | Linkage control system of train door and platform door |
| CN104176066A (en) * | 2014-09-10 | 2014-12-03 | 上海自仪泰雷兹交通自动化系统有限公司 | Redundancy control system and method of train shield gate |
| CN104661889A (en) * | 2012-09-18 | 2015-05-27 | 平奇巴马格驾驶和交通技术有限公司 | Arrangement and method for controlling train platform doors |
-
2016
- 2016-12-28 CN CN201611235656.7A patent/CN108252612B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8717154B2 (en) * | 2011-04-11 | 2014-05-06 | Chi Mei Communication Systems, Inc. | Computing device and method of automobile control |
| WO2013086578A1 (en) * | 2011-12-15 | 2013-06-20 | Multiskilled Resources Australia Pty Ltd | Rail car operating condition and identity monitoring system |
| CN104661889A (en) * | 2012-09-18 | 2015-05-27 | 平奇巴马格驾驶和交通技术有限公司 | Arrangement and method for controlling train platform doors |
| CN203570095U (en) * | 2013-11-30 | 2014-04-30 | 四川久远新方向智能科技有限公司 | BRT (bus rapid transit) safety door capable of supporting wireless remote control function |
| CN203819231U (en) * | 2014-04-17 | 2014-09-10 | 上海嘉成轨道交通安全保障系统有限公司 | Linkage control system of train door and platform door |
| CN104176066A (en) * | 2014-09-10 | 2014-12-03 | 上海自仪泰雷兹交通自动化系统有限公司 | Redundancy control system and method of train shield gate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108252612A (en) | 2018-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5517706B2 (en) | Home door control system | |
| CN103132847B (en) | Adopt the contactless obstacle detection system of radio RF recognition technology | |
| EP2250066B1 (en) | Railway sensor communication system and method | |
| CN104847210A (en) | Shielded door opening and closing control device and train door shielded door linkage control method | |
| CN108463380B (en) | Method and system for automatically triggering vehicle functions of a vehicle and vehicle comprising such a system | |
| AU2018201898B2 (en) | System and method for controlling a level crossing | |
| CN109649411A (en) | A kind of gate linkage being applicable in intelligence rail and method | |
| CN103400420A (en) | Parking lot control system | |
| CN103895655A (en) | Coordinated control system and method of train door and platform door | |
| CN108252612B (en) | BRT (bus rapid transit) door and safety door linkage system based on RFID (radio frequency identification) and control method thereof | |
| CN105137802A (en) | ETC intelligent gate opening system capable of carrying out vehicle identification and gate opening method | |
| JP4757615B2 (en) | Home fence | |
| CN102099540A (en) | Drive system for a door | |
| CN209581459U (en) | A kind of gate linkage being applicable in intelligence rail | |
| CN206049603U (en) | For the anti-theft device and vehicle of GPS/GSM signal shielding devices | |
| CN102110315A (en) | Communication system and communication method for electronic toll collection system | |
| CN204965044U (en) | Intelligent residential district ETC system of vehicle discernment can carry out | |
| CN102799911A (en) | Deceleration strip sensing system and method | |
| JP5820430B2 (en) | Home fence opening and closing system | |
| CN103871134B (en) | A kind of intelligent controllable type campus vehicle safety barrier system | |
| CN203720904U (en) | Intelligent controllable-type safety barrier block system for school vehicles | |
| RU2703890C1 (en) | Electronic sealing system | |
| JP2011093432A (en) | Train detecting device | |
| CN207225349U (en) | A kind of automatic unloading coal system of hopper wagon based on Gray bus | |
| US9193361B2 (en) | System for detecting service vehicles approaching stations |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |