CN113452389A - Station door double-wireless redundant signal transmission system and method - Google Patents
Station door double-wireless redundant signal transmission system and method Download PDFInfo
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- CN113452389A CN113452389A CN202110575325.2A CN202110575325A CN113452389A CN 113452389 A CN113452389 A CN 113452389A CN 202110575325 A CN202110575325 A CN 202110575325A CN 113452389 A CN113452389 A CN 113452389A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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Abstract
The invention discloses a double-wireless redundant signal transmission system of a platform door, which comprises two wireless transmitting devices, two wireless receiving devices and a CAN bus, wherein the two wireless transmitting devices and the two wireless receiving devices carry out double-wireless networking; the invention discloses a transmission method of double wireless redundant signals of a platform door, which uses the system to transmit the double wireless redundant signals of the platform door. The invention adopts two sets of wireless transmitting devices and two sets of wireless receiving devices, utilizes the short-distance wireless modulation technology to convert signals, completes the redundant transmission of door opening and closing signals, realizes double real-time wireless communication, and has good noise immunity and high reliability because the signals are mutually backed up.
Description
Technical Field
The invention relates to an urban tramcar, in particular to a station door double-wireless redundant signal transmission system and a method.
Background
The switch signal of the platform door of the urban tramcar is sent by a vehicle, the signal transmission is generally realized by short-distance wireless and other modes, the common mode is a superheterodyne wireless transceiver module with frequency bands of 315MHz, 433MHz and the like, the existing wireless control mode can not realize bidirectional communication, and the defects of simple signal, easy cracking, poor anti-interference performance and short transmission distance are overcome, the platform door can not be opened and closed in the operation process and the accidental door opening fault is frequently generated, and the normal operation of the vehicle is seriously influenced.
The prior art finishes the door opening and closing signal transmission between the vehicle and the platform door through a pair of transceivers, the transceivers usually adopt the civil superheterodyne wireless transceiving technology, the transceiver has the defects of simple signals, easy cracking, poor anti-interference performance and short transmission distance, the real-time bidirectional communication can not be realized, the transmitter can not determine whether the receiver successfully receives the wireless signals, in addition, the vehicle and the platform are both provided with metal shielding objects, and the requirement on the diffraction performance of the wireless transmission is very high. The prior art has the defects of poor signal safety, poor anti-interference performance, short transmission distance, incapability of bidirectional intercommunication, poor diffraction performance and the like.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a station door double-wireless redundant signal transmission system with good interference resistance and high reliability, and the invention also aims to provide a station door double-wireless redundant signal transmission method with long transmission distance and strong safety.
The technical scheme is as follows: the invention relates to a double-wireless redundant signal transmission system of a platform door, which comprises an uplink vehicle door and a downlink vehicle door, and also comprises a first wireless transmitting device, a first wireless receiving device, a second wireless transmitting device, a second wireless receiving device and a CAN bus, wherein the first wireless transmitting device is arranged above the uplink vehicle door, the second wireless transmitting device is arranged above the downlink vehicle door, is respectively in hard-wire connection with a vehicle instrument and is used for converting opening and closing signals into encrypted wireless signals and then transmitting the encrypted wireless signals outwards, the first wireless receiving device is arranged on the side surface of the uplink vehicle door, the second wireless receiving device is arranged on the side surface of the downlink vehicle door and is respectively used for receiving and transmitting the wireless signals and the CAN signals, the CAN bus is used as a signal transmission bus and penetrates through the uplink vehicle door and the downlink vehicle door and is used for data communication between the wireless receiving device and a platform door controller, the first wireless transmitting device, the first wireless receiving device, the second wireless transmitting device and the second wireless receiving device carry out double-wireless networking, the first wireless transmitting device and the second wireless transmitting device execute corresponding wireless signal transmitting processes according to vehicle instrument signals and feedback signals of the wireless receiving module, the first wireless receiving device and the second wireless receiving device carry out real-time communication and mutually send heartbeats through wireless and CAN, the connection state of the first wireless transmitting device and the second wireless receiving device and the CAN bus is detected, and whether the other side CAN signal is received and sent or not is judged according to the state.
The first wireless transmitting device and the second wireless transmitting device are respectively in hard-wire connection with the vehicle instrument and used for converting the opening and closing signals into encrypted wireless signals and then transmitting the encrypted wireless signals outwards.
The first wireless receiving device and the second wireless receiving device are used for receiving and transmitting wireless signals and CAN signals respectively.
The first wireless transmitting device, the first wireless receiving device, the second wireless transmitting device and the second wireless receiving device all adopt micropower short-distance wireless modules which are communicated in two directions.
When the vehicle enters or leaves the station in the uplink direction, the first wireless transmitting device transmits a door opening and closing wireless signal to the first wireless receiving device and the second wireless receiving device, at the moment, the second wireless receiving device backs up the uplink vehicle door signal, and if the first wireless receiving device fails to control and send the CAN signal, the second wireless receiving device takes over the door opening and closing wireless signal.
When the vehicle enters or leaves the station in the downward traveling direction, the second wireless transmitting device transmits door opening and closing wireless signals to the first wireless receiving device and the second wireless receiving device, at the moment, the first wireless receiving device backs up the door opening and closing signals of the downward vehicle, and if the second wireless receiving device fails to control and send the CAN signals, the first wireless receiving device takes over the door opening and closing signals.
The wireless device adopts a micro-power short-distance wireless technology, and the working frequency band adopts a global unlicensed ISM frequency band comprising 315MHz and 433 MHz.
A method for transmitting dual wireless redundant signals of a station door comprises the following steps:
(1) the first wireless transmitting device and the second wireless transmitting device execute corresponding wireless signal transmitting processes according to the vehicle instrument signals and the feedback signals of the wireless receiving module;
(2) the first wireless receiving device and the second wireless receiving device are in real-time communication through wireless CAN and mutually send heartbeats, detect the connection state of the first wireless receiving device and the CAN bus, and judge whether to take over the receiving and sending of the CAN signal of the other side according to the state;
(3) when a vehicle enters or leaves a station in the uplink direction, a first wireless transmitting device transmits a door opening and closing wireless signal to a first wireless receiving device and a second wireless receiving device in an appointed mode, at the moment, the second wireless receiving device backs up the uplink vehicle door signal, and if the first wireless receiving device fails to control and send a CAN signal, the second wireless receiving device takes over the door;
(4) when the vehicle enters or leaves the station in the descending direction, the second wireless transmitting device transmits door opening and closing wireless signals to the first wireless receiving device and the second wireless receiving device in an appointed mode, at the moment, the first wireless receiving device backups the descending vehicle door signals, and if the second wireless receiving device fails to control and send the CAN signals, the first wireless receiving device takes over the signals.
In the steps (3) and (4), the appointed mode includes broadcast transmission and fixed point transmission.
Has the advantages that: compared with the prior art, the invention has the following advantages:
1. according to the invention, through two sets of wireless transmitting devices and two sets of wireless receiving devices, the door opening and closing signals of the vehicle are converted into encrypted wireless signals by utilizing a micro-power short-distance wireless technology and then transmitted outwards, so that the redundant transmission of the door opening and closing signals between the vehicle and the platform door is completed, and the micro-power short-distance wireless technology has the advantages of strong diffraction, long transmission distance and strong anti-interference capability;
2. the communication key can be flexibly set and cannot be cracked, and the signal safety can be greatly improved;
3. an external SMA rubber bar antenna is adopted, so that wireless signals can be effectively enhanced;
4. through main control chip logic analysis, utilize the heartbeat transmission of CAN bus completion between the short distance wireless device, realize two real-time wireless communication, the signal is backup each other, and the immunity is good, and the reliability is high.
Drawings
FIG. 1 is a schematic diagram of the overall system of the present invention;
FIG. 2 is a schematic block circuit diagram of a wireless transceiver device;
FIG. 3 is a schematic block diagram of the operation of dual wireless networking of the system;
FIG. 4 is a flow chart of the wireless receiving device heartbeat self-test software;
fig. 5 is a software flowchart of the uplink radio receiving apparatus 1;
fig. 6 is a software flowchart of the uplink radio receiving apparatus 2;
fig. 7 is a wireless transmitting device software flow diagram.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
As shown in fig. 1-7, the present invention discloses a dual wireless redundant signal transmission system for a platform door, which includes an uplink vehicle door 101 and a downlink vehicle door 102, the system further includes a first wireless transmitting device 103, a first wireless receiving device 104, a second wireless transmitting device 105, a second wireless receiving device 106, and a CAN bus 107, the first wireless transmitting device 103 is installed above the uplink vehicle door 101, the second wireless transmitting device 105 is installed above the downlink vehicle door 102, the first wireless transmitting device 103 and the second wireless transmitting device 105 are respectively in hard-wired connection with a vehicle instrument, and are used for converting an opening/closing signal into an encrypted wireless signal and transmitting the encrypted wireless signal outwards; the first wireless receiving device 104 is installed on the side surface of the ascending vehicle door 101, the second wireless receiving device 105 is installed on the side surface of the descending vehicle door 102, and the first wireless receiving device 104 and the second wireless receiving device 106 are respectively used for receiving and transmitting wireless signals and CAN signals; the CAN bus 107 is used as a signal transmission bus and penetrates through the uplink vehicle door 101 and the downlink vehicle door 102; the first wireless transmitting device 103, the first wireless receiving device 104, the second wireless transmitting device 105 and the second wireless receiving device 106 all adopt bidirectional intercommunicated enhanced LoRa wireless spread spectrum modules; the first wireless transmitting device 103, the first wireless receiving device 104, the second wireless transmitting device 105 and the second wireless receiving device 106 perform double wireless networking, the first wireless transmitting device 103 and the second wireless transmitting device 105 execute corresponding wireless signal transmitting processes according to vehicle instrument signals and feedback signals of a wireless receiving module, the first wireless receiving device 104 and the second wireless receiving device 106 perform real-time communication and heartbeat transmission with each other through wireless and CAN, detect the connection state of the first wireless receiving device and the CAN bus 107, and judge whether to take over the receiving and transmitting of CAN signals of the other side according to the state; when a vehicle enters or leaves a station in the uplink direction, the first wireless transmitting device 103 and the second wireless transmitting device 105 transmit door opening and closing wireless signals to the first wireless receiving device 104 and the second wireless receiving device 106 in a broadcasting mode, at the moment, the second wireless receiving device 106 backs up the uplink vehicle door 101 signals, and if the first wireless receiving device 104 fails to control and send the CAN signals, the second wireless receiving device 106 takes over; when the vehicle enters or leaves the station in the downward traveling direction, the first wireless transmitting device 103 and the second wireless transmitting device 105 transmit door opening and closing wireless signals to the first wireless receiving device 104 and the second wireless receiving device 106 in a broadcasting mode, at the moment, the first wireless receiving device 104 backs up the downstream vehicle door 102 signals, and if the second wireless receiving device 106 fails to control and send the CAN signals, the first wireless receiving device 104 takes over.
Fig. 2 shows a schematic circuit diagram of a wireless transceiver, that is, a schematic working diagram of the first wireless transmitter 103, the first wireless receiver 104, the second wireless transmitter 105, and the second wireless receiver 106, which mainly comprises a main control circuit 201 of a single chip, a wireless signal transceiver 202, a power converter 203, a first power converter 204, a second power converter 205, a CAN circuit 206, and an input/output circuit 207. The singlechip main control circuit 201 is a control core and is responsible for logic analysis and control of the whole system; the wireless signal transceiver circuit 202 is responsible for converting the control signal of the main control circuit into a wireless encryption signal and sending out the wireless encryption signal, and converting the received wireless signal into a digital signal which can be processed by the main control circuit; the first power conversion chip 204 and the second power conversion chip 205 form a power conversion circuit 203, which is responsible for generating a 5V power voltage and a 3.3V power voltage for supplying power to other circuits; the CAN circuit 206 is responsible for signal conversion of communication between the singlechip main control circuit 201 and the peripheral CAN bus 107; the input/output circuit 207 performs conversion processing on the signal.
The invention discloses a station door double-wireless redundant signal transmission method, which comprises the following steps:
(1) the first wireless transmitting device 103 and the second wireless transmitting device 105 execute corresponding wireless signal transmitting procedures according to the vehicle instrument signal and the feedback signal of the wireless receiving module;
(2) the first wireless receiving device 104 and the second wireless receiving device 106 perform real-time communication and heartbeat transmission with each other through wireless and CAN, detect the connection state of the first wireless receiving device and the CAN bus 107, and judge whether to take over the receiving and transmitting of the CAN signal of the other side according to the state;
(3) when the vehicle enters or leaves the station in the uplink direction, the first wireless transmitting device 103 transmits a door opening and closing wireless signal to the first wireless receiving device 104 and the second wireless receiving device 106 in an appointed mode, at the moment, the second wireless receiving device 106 backs up an uplink vehicle door 101 signal, and if the first wireless receiving device 104 fails to control and send the CAN signal, the second wireless receiving device 106 takes over;
(4) when the vehicle enters or leaves the station in the downlink direction, the second wireless transmitting device 105 transmits a door opening and closing wireless signal to the first wireless receiving device 104 and the second wireless receiving device 106 in a conventional mode, at this time, the first wireless receiving device 104 backs up the downlink vehicle door 102 signal, and if the second wireless receiving device 106 fails to control and transmit the CAN signal, the first wireless receiving device 104 takes over the signal.
Example 1:
the first wireless transmitting device 103 and the second wireless transmitting device 105 are respectively arranged above an ascending vehicle door 101 and a descending vehicle door 102, power supply is provided by a vehicle, a door opening and closing signal is connected with a vehicle instrument through a hard wire, and when the vehicle instrument triggers the door opening and closing signal, the first wireless transmitting device 103 and the second wireless transmitting device 105 both receive level conversion square waves with fixed periods; the first wireless receiving device 104 and the second wireless receiving device 106 are respectively installed on the side of the ascending vehicle door 101 and the descending vehicle door 102, power supply is provided by a station power supply system, and the first wireless receiving device 104 and the second wireless receiving device 106 are connected with the ascending station door controller 108 and the descending station door controller 109 through the CAN bus 107 for data communication.
Example 2:
heartbeat self-checking: after being powered on, the first wireless receiving device 104 and the second wireless receiving device 106 perform heartbeat transmission through the CAN bus 107 every 1 minute, and detect the connection state between themselves and the CAN bus 107. If the heartbeat is abnormal, the ascending platform door controller 108 and the descending platform door controller 109 send CAN signals, if the feedback signals are received, the output CAN connection is normal, otherwise, the output CAN connection is failed.
Example 3:
wireless transmission:
when a vehicle runs in the uplink direction and stops at a station, when a vehicle instrument triggers a door opening or closing signal, level detection of a door opening and closing signal input port of a first wireless transmitting device 103 is changed from low to high, namely external interruption is triggered, software judges whether the door opening and closing signal is effective, if the door opening and closing signal is effective, switching signal data are converted into encrypted wireless signal data and are transmitted outwards for 3 times in a broadcasting or fixed-point transmission mode, if the first wireless transmitting device 103 receives a feedback signal sent by a first wireless receiving device 104 or a second wireless receiving device 106, a data transmitting flow is finished, and if the first wireless transmitting device 103 does not receive the feedback signal sent by the first wireless receiving device 104 or the second wireless receiving device 106, a fault alarm is given;
when the vehicle travels in the downward direction to stop the station, when a vehicle instrument triggers a door opening or closing signal, level detection of a door opening and closing signal input port of the second wireless transmitting device 105 is changed from low to high, namely external interruption is triggered, software judges whether the door opening and closing signal is effective, if the door opening and closing signal is effective, the door opening and closing signal is converted into encrypted wireless signal data and is transmitted outwards for 3 times in a broadcasting or fixed-point transmission mode, if the second wireless transmitting device 105 receives a feedback signal sent by the first wireless receiving device 104 or the second wireless receiving device 106, a data transmitting flow is finished, and if the second wireless transmitting device 105 receives the feedback signal sent by the first wireless receiving device 104 or the second wireless receiving device 106, a fault alarm is given.
Example 4:
after receiving the wireless door opening and closing signal, the first wireless receiving device 104 and the second wireless receiving device 106 first determine whether the direction is the uplink direction or the downlink direction, and then perform a corresponding software process.
After the wireless receiving module of the first wireless receiving device 104 receives the wireless door opening and closing signal, if it is determined that the wireless door opening and closing signal is in the uplink direction, after the process starts, the first wireless receiving device 104 performs CAN1 signal connection self-check determination, the self-check outputs a fault signal when the self-check is abnormal, the process ends, and the self-check is normal, the door opening and closing check signal is sent to the second wireless receiving device 106 through the CAN bus 107, at this time, the first wireless receiving device 104 sends a receiving success feedback signal to the first wireless transmitting device 103 regardless of whether receiving the feedback signal, and sends a door opening and closing signal to each uplink door controller 108 through the CAN bus 107, if the wireless receiving device receives the feedback signal sent by each station door controller, the data forwarding process ends, otherwise, the CAN signal is sent again.
After the wireless receiving module of the second wireless receiving device 106 receives the wireless door opening and closing signal, if the wireless door opening and closing signal is judged to be in the uplink direction, the uplink door opening and closing signal is backed up. The second wireless receiving device 106 performs CAN2 signal connection self-check judgment, outputs a fault signal when the self-check is abnormal, and ends the process, and sends a feedback signal to the first wireless receiving device 104 when a door opening and closing check request signal is received within 50ms after the self-check is normal, and ends the process. Otherwise, a feedback signal of successful receiving is transmitted to the first wireless transmitting device 103, and door opening and closing signal data is sent to each uplink station door controller through the CAN bus 107, if the first wireless receiving device 104 receives the feedback signal sent by each station door controller, the data forwarding process is ended, otherwise, the CAN signal is sent again.
After the wireless receiving module of the first wireless receiving device 104 receives the wireless door opening and closing signal, if the wireless door opening and closing signal is judged to be in the downlink direction, the downlink door opening and closing signal is backed up. The first wireless receiving apparatus 104 performs CAN1 signal connection self-check judgment, outputs a fault signal when the self-check is abnormal, and ends the process, and transmits a feedback signal to the second wireless receiving apparatus 106 when a door opening and closing check request signal is received within 50ms after the self-check is normal, and ends the process. Otherwise, a feedback signal of successful receiving is transmitted to the second wireless transmitting device 105, and door opening and closing signal data is sent to each downstream platform door controller through the CAN bus 107, if the first wireless receiving device 104 receives the feedback signal sent by each platform door controller, the data forwarding process is ended, otherwise, the CAN signal is sent again.
After the wireless receiving module of the second wireless receiving device 106 receives the wireless door opening and closing signal, if it is determined that the wireless door opening and closing signal is in the downlink direction, after the process starts, the second wireless receiving device 106 performs CAN2 signal connection self-check determination, the self-check outputs a fault signal when the fault signal is abnormal, the process ends, and the self-check is normal, the door opening and closing check signal is sent to the first wireless receiving device 104 through the CAN bus 107, at this time, the second wireless receiving device 106 sends a receiving success feedback signal to the second wireless transmitting device 105 regardless of whether receiving the feedback signal, and sends a door opening and closing signal to each downlink door controller through the CAN bus 107, if the second wireless receiving device 106 receives the feedback signal sent by each station door controller, the data forwarding process ends, otherwise, the CAN signal is sent again.
Claims (9)
1. A station door dual-wireless redundant signal transmission system comprises an uplink vehicle door (101) and a downlink vehicle door (102), and is characterized in that: the system also comprises a first wireless transmitting device (103), a first wireless receiving device (104), a second wireless transmitting device (105), a second wireless receiving device (106) and a CAN bus (107), wherein the first wireless transmitting device (103) is arranged above the uplink vehicle door (101), the second wireless transmitting device (105) is arranged above the downlink vehicle door (102), the first wireless receiving device (104) is arranged on the side surface of the uplink vehicle door (101), the second wireless receiving device (105) is arranged on the side surface of the downlink vehicle door (102), the CAN bus (107) is used as a signal transmission bus and penetrates through the uplink vehicle door (101) and the downlink vehicle door (102), and the first wireless transmitting device (103), the first wireless receiving device (104), the second wireless transmitting device (105) and the second wireless receiving device (106) perform double wireless networking, the first wireless transmitting device (103) and the second wireless transmitting device (105) execute corresponding wireless signal transmitting processes according to vehicle instrument signals and feedback signals of the wireless receiving module, the first wireless receiving device (104) and the second wireless receiving device (106) carry out real-time communication and heartbeat transmission with each other through wireless and CAN, detect the connection state of the first wireless receiving device and the CAN bus (107), and judge whether to take over the receiving and transmitting of CAN signals of the other side according to the state.
2. The system of claim 1, wherein: the first wireless transmitting device (103) and the second wireless transmitting device (105) are respectively in hard-wire connection with the vehicle instrument and used for converting the opening and closing signals into encrypted wireless signals and then transmitting the encrypted wireless signals outwards.
3. The system of claim 1, wherein: the first wireless receiving device (104) and the second wireless receiving device (106) are used for transceiving wireless signals and CAN signals respectively.
4. The system of claim 1, wherein: the first wireless transmitting device (103), the first wireless receiving device (104), the second wireless transmitting device (105) and the second wireless receiving device (106) all adopt short-range wireless modules which are communicated with each other in a bidirectional mode.
5. The system of claim 1, wherein: when the vehicle enters or leaves the station in the uplink direction, the first wireless transmitting device (103) transmits a door opening or closing wireless signal to the first wireless receiving device (104) and the second wireless receiving device (106) in an appointed mode, wherein the appointed mode of wireless transmission comprises broadcast transmission and fixed point transmission, the second wireless receiving device (106) backs up the uplink vehicle door (101) signal, and if the first wireless receiving device (104) fails to control and send the CAN signal, the second wireless receiving device (106) takes over the door opening or closing wireless signal.
6. The system of claim 1, wherein: when the vehicle enters or leaves the station in the downlink direction, the second wireless transmitting device (105) transmits door opening or closing wireless signals to the first wireless receiving device (104) and the second wireless receiving device (106) in an appointed mode, wherein the appointed mode of wireless transmission comprises broadcast transmission and fixed point transmission, the first wireless receiving device (104) backs up downlink vehicle door (102) signals, and if the second wireless receiving device (106) fails to control and send the CAN signals, the first wireless receiving device (104) takes over the signals.
7. The system of claim 1, wherein: the wireless device adopts a micro-power short-distance wireless technology, and the working frequency band adopts a global unlicensed ISM frequency band comprising 315MHz and 433 MHz.
8. A method for transmitting dual wireless redundant signals of a station door, the method comprising the steps of:
(1) the first wireless transmitting device (103) and the second wireless transmitting device (105) execute corresponding wireless signal transmitting processes according to the vehicle instrument signals and the feedback signals of the wireless receiving module;
(2) the first wireless receiving device (104) and the second wireless receiving device (106) carry out real-time communication and heartbeat transmission with each other through wireless and CAN, detect the connection state of the first wireless receiving device and the CAN bus (107), and judge whether to take over the receiving and transmitting of the CAN signal of the other side according to the state;
(3) when the vehicle enters or leaves the station in the uplink direction, the first wireless transmitting device (103) transmits a door opening and closing wireless signal to the first wireless receiving device (104) and the second wireless receiving device (106) in an appointed mode, at the moment, the second wireless receiving device (106) backs up an uplink vehicle door (101) signal, and if the first wireless receiving device (104) fails to control and send the CAN signal, the second wireless receiving device (106) takes over the CAN signal;
(4) when the vehicle enters or leaves the station in the downlink direction, the second wireless transmitting device (105) transmits a door opening and closing wireless signal to the first wireless receiving device (104) and the second wireless receiving device (106) in an appointed mode, at the moment, the first wireless receiving device (104) backs up a downlink vehicle door (102) signal, and if the second wireless receiving device (106) fails to control and send the CAN signal, the first wireless receiving device (104) takes over the CAN signal.
9. The method of claim 8, wherein: in the steps (3) and (4), the appointed mode includes broadcast transmission and fixed point transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110575325.2A CN113452389B (en) | 2021-08-13 | 2021-08-13 | Station door double-wireless redundant signal transmission system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110575325.2A CN113452389B (en) | 2021-08-13 | 2021-08-13 | Station door double-wireless redundant signal transmission system and method |
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| CN113452389A true CN113452389A (en) | 2021-09-28 |
| CN113452389B CN113452389B (en) | 2022-07-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004068438A1 (en) * | 2003-01-30 | 2004-08-12 | Yong Shen | Mini-vehicle track traffic system |
| JP2006333007A (en) * | 2005-05-25 | 2006-12-07 | Nissan Motor Co Ltd | Vehicle communication system and data communication method |
| CN102006104A (en) * | 2010-11-05 | 2011-04-06 | 青岛易特优电子有限公司 | Subway train-ground wireless transmission system |
| CN103895655A (en) * | 2014-04-17 | 2014-07-02 | 上海嘉成轨道交通安全保障系统有限公司 | Coordinated control system and method of train door and platform door |
| CN105223886A (en) * | 2015-10-12 | 2016-01-06 | 南京康尼电子科技有限公司 | A kind of supervisory system for tramcar platform door |
-
2021
- 2021-08-13 CN CN202110575325.2A patent/CN113452389B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004068438A1 (en) * | 2003-01-30 | 2004-08-12 | Yong Shen | Mini-vehicle track traffic system |
| JP2006333007A (en) * | 2005-05-25 | 2006-12-07 | Nissan Motor Co Ltd | Vehicle communication system and data communication method |
| CN102006104A (en) * | 2010-11-05 | 2011-04-06 | 青岛易特优电子有限公司 | Subway train-ground wireless transmission system |
| CN103895655A (en) * | 2014-04-17 | 2014-07-02 | 上海嘉成轨道交通安全保障系统有限公司 | Coordinated control system and method of train door and platform door |
| CN105223886A (en) * | 2015-10-12 | 2016-01-06 | 南京康尼电子科技有限公司 | A kind of supervisory system for tramcar platform door |
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| CN113452389B (en) | 2022-07-01 |
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