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Train assistant driving system based on wireless LoRa network

A train and network technology, applied in the field of train auxiliary driving systems, can solve problems such as unsuitable trains, complex composition of Zigbee equipment, and difficulty in deployment on construction sites

Inactive Publication Date: 2019-01-04
通号城市轨道交通技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to carry out the red light reminder and the distance reminder, a technical scheme combining Zigbee technology to realize the information collection of the ground signal machine and the real-time communication between the train and the signal machine has been proposed (refer to: Research on ARM-based subway train operation auxiliary system and Design author: Xi Zhengbo Degree granting unit: Zhejiang Gongshang University Degree year: 2015), but the composition of Zigbee equipment in this scheme is complex, consisting of three different units: terminal, coordinator and router, and it is difficult to deploy on the construction site; in addition , Zigbee technology is a short-distance communication technology, in the field of rail transit, it is not suitable for faster trains

Method used

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  • Train assistant driving system based on wireless LoRa network
  • Train assistant driving system based on wireless LoRa network
  • Train assistant driving system based on wireless LoRa network

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0043] Assisted driving system for trains running red lights based on LoRa network

[0044] Take the communication between the on-board equipment of train A and the signal equipment of A as an example:

[0045] 1) The on-board equipment of train A sends a broadcast inquiry signal every 1 second.

[0046] 2) The A signal device judges whether it has received the broadcast inquiry signal from the on-board equipment of the A train, and if so, executes step 3), otherwise, continues to maintain the receiving state.

[0047] 3) After receiving the broadcast inquiry signal from the on-board equipment of train A, the signal machine equipment of A detects the indication state of the signal machine, and sends the status information of the signal machine and the position number of the signal machine in the entire line to the on-board equipment of train A, Then restore the receiving state.

[0048] 4) The on-board equipment of train A judges whether it has received the reply message sen...

example 2

[0051] Assisted driving system for trains running red lights based on LoRa network

[0052] Take the communication between the on-board equipment of train A and the on-board equipment of train B as an example:

[0053] 1) The on-board equipment of train A and train B will send a broadcast inquiry signal every 1 second.

[0054] 2) The on-board equipment of train A judges whether to receive the broadcast inquiry signal sent by the on-board equipment of train B, if received, then proceed to step 3), if not received, then keep the state of sending a broadcast inquiry signal at an interval of 1 second; The vehicle-mounted equipment judges whether to receive the broadcast inquiry signal that the vehicle-mounted equipment of A train sends, if receive then carry out step 4), if do not receive then keep the state that sends once broadcast inquiry signal in 1 second.

[0055] 3) After the on-board equipment of train A receives the broadcast inquiry signal sent by the on-board equipmen...

example 3

[0059] Assisted driving system for trains running red lights based on LoRa network

[0060] In the field application, there may be multi-vehicle and multi-signal communication. Take the communication of train A, train B, A signal and B signal as an example:

[0061] 1) The on-board equipment of train A and train B will send a broadcast inquiry signal every 1 second.

[0062] 2) The on-board equipment of train A judges whether the signal is received (the source of the signal may be: 1, the broadcast inquiry signal sent by the on-board equipment of train B; 2, the reply signal sent by the on-board equipment of train B; 3, the signal machine of A or B The reply signal sent by the signal machine), if received, then proceed to step 3), if not received, then keep the state of sending a broadcast signal inquiry number at an interval of 1 second; the on-board equipment of the B train judges whether the signal is received (the signal source may be: 1, the broadcast inquiry signal that...

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Abstract

The invention discloses a train assistant driving system based on a wireless LoRa network. The system includes a vehicle-mounted device and a signaler device. The vehicle-mounted device includes a first LoRa module, a GPS module, a first microprocessor and a prompt module, wherein that signaler device comprises a second LoRa module, a second microprocessor and a current transformer, and is use for realizing the functions of reminding a train driver to pay attention to a front signal lamp, carry out red light running protection and train-to-train distance reminding, and preventing collision. LoRa network has the function of ad hoc network, which can send corresponding information according to different IP addresses. The signaler and train can use LoRa equipment, which greatly reduces the deployment difficulty. LoRa technology has a link budget of up to 157 db and can communicate over distances of up to 15 kilometers and can be used on faster trains.

Description

technical field [0001] The invention relates to the field of rail transit wireless communication, in particular to a train auxiliary driving system based on a wireless LoRa network. Background technique [0002] In rail transit, the use of signal lights ensures the safe and orderly driving of trains, effectively improves the transportation efficiency of rail transit, and reduces transportation costs. However, under normal circumstances, there are many signal lights along the rail transit line, and the driver may accidentally run a red light due to bad weather during driving, causing danger. Therefore, it is very necessary to develop a scientific and effective prevention mechanism. When the train passes the red light, the on-board equipment will give corresponding prompts to let the driver notice the status of the signal light, which is of great practical significance to ensure the safe operation of rail transit. In addition, during the running of the train, a certain safe d...

Claims

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Application Information

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IPC IPC(8): B61L23/22B61L23/34
CPCB61L23/22B61L23/34
Inventor 田元朱波彭朝阳贾晓哲焦凤霞
Owner 通号城市轨道交通技术有限公司