Remote safe evacuation protection system and method for railway operation

Abstract

The invention provides a long-distance safe evacuation protection system and method for railway operation. The long-distance safe evacuation protection method comprises the steps that a train sensing and monitoring device conducts continuous distance measurement through a millimeter wave radar and sends a distance measurement result to an alarm station in a wireless communication mode; a zigbee wireless communication network is established among the alarm station, the remote control device and the machine tool control device, the alarm station is used for analyzing the passing state and speed of the railway vehicle according to the distance measurement result so as to obtain coming vehicle information, and a shutdown instruction is automatically sent to the machine tool control device through the zigbee wireless communication network; or the coming vehicle information is sent to the remote control device through the zigbee wireless communication network, and the remote control device outputs a shutdown instruction to the machine tool control device in a remote control mode; and the machine control device is used for controlling the machine in railway field operation to stop according to the stop instruction. The machine tool is remotely controlled to stop by automatically monitoring the passing state of the railway vehicle, and the effect of safely, accurately and rapidly evacuating people during railway operation is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of railway operation safety protection, and in particular to a protection system and method for long-distance safe evacuation during railway operation. Background Art

[0002] Railway transportation is the most important mode of transportation in my country, so the construction and maintenance of railways are particularly important. However, during the construction of railways, various machines and tools often make huge noises when working, which often causes the machine operators to be unable to hear the instructions issued by the safety officer to go down the track, resulting in the inability to evacuate personnel in time, and serious accidents such as casualties, vehicle damage and delays. For example, snowfall in winter will have a great impact on driving safety, especially in the turnout part. If there is heavy snow accumulation on the turnout at this time, the turnout will be inflexible and may even be frozen by ice and snow, which will seriously affect the operation safety of the train. Therefore, timely removal of snow on railway lines and turnouts can ensure that trains can accurately and safely travel on the correct track. At present, railway snow removal is mainly carried out manually, and the main method is for workers to carry wind-powered snowplows along the line. Such machines usually use gasoline engines to drive the blades to rotate, thereby generating wind to blow away debris. However, due to the excessive noise, workers can hardly hear any other sounds when performing snow removal operations, including the sound of the whistle of the rail vehicle about to pass, the shouts of the safety officer and his companions, etc., so rail vehicle collision accidents often occur. In addition, due to the influence of geographical environment restrictions and climatic conditions, sometimes due to factors such as terrain, rain and snow, the operators cannot perceive any instructions issued by the safety protection personnel at all, and thus cannot evacuate safely.

[0003] For such hidden dangers, the existing solutions are: first, the safety officer connects the operator with a rope, and when the safety officer receives the command, he forcibly drags the operator away from the railway track. However, due to the complexity of on-site construction operations, the safety guarantee method of rope connection is completely dependent on the manual intervention of the safety officer, and there are too many unknown risks, so it cannot fully meet the safety protection needs; the second is to use remote control to control the operation of the airborne terminal through the safety officer's handheld remote control terminal. However, since most traditional controllers are carried out in a one-to-one manner, that is, there are as many remote control terminals as there are airborne terminals, when there are multiple construction workers and only one safety protection reminder personnel, the safety protection reminder personnel needs to control multiple handheld remote control terminals at the same time to operate, which puts high demands on the accuracy and speed of the safety officer's operation, and it is very easy to make mistakes and misoperations; in addition, if the traditional one-to-many control method is adopted, the airborne terminal and the handheld terminal need to be strongly bound at the factory, but if the number of airborne terminals is small, it may still be necessary to have multiple remote controls; if the number of airborne terminals is large, some airborne terminals cannot be teamed with other airborne terminals for control.

[0004] Therefore, there is a need for a protection system and method that can safely, accurately and quickly evacuate personnel during railway operations. Summary of the invention

[0005] The present invention provides a long-distance safe evacuation protection system and method for railway operations, which are mainly used to solve the problem that personnel cannot be evacuated in time and safely during existing railway operations, thereby achieving the effect of safely, accurately and quickly evacuating personnel during railway operations and eliminating such safety hazards.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] A long-distance safe evacuation protection system for railway operation comprises a train sensing monitoring device, an alarm station, a remote control device and a machine control device. The train sensing monitoring device is placed at a track measurement point far away from the railway operation site, uses a millimeter wave radar to perform continuous distance measurement and sends the distance measurement result to the alarm station by wireless communication; a Zigbee wireless communication network is established between the alarm station, the remote control device and the machine control device, the alarm station is used to analyze the passing state and speed of the rail vehicle according to the distance measurement result to obtain the incoming vehicle information, and output a stop instruction according to the incoming vehicle information, and automatically send the stop instruction to the machine control device through the Zigbee wireless communication network; or the alarm station sends the incoming vehicle information to the remote control device through the Zigbee wireless communication network, the remote control device is used to process and display the incoming vehicle information, and output the stop instruction to the machine control device by remote control; the machine control device is used to control the machine in the railway site operation to stop according to the stop instruction.

[0008] A further solution is that the train sensing and monitoring device includes a first millimeter-wave radar, a second millimeter-wave radar, a main control MCU, a first LORA wireless communication module and a first power supply module for powering the device. The first millimeter-wave radar and the second millimeter-wave radar are placed at intervals to measure the distance of the passing rail vehicles, and output the ranging information to the main control MCU in sequence according to the ranging time; the main control MCU is used to determine whether a rail vehicle passes according to the ranging information, and calculate the passing speed according to the interval distance between the first millimeter-wave radar and the second millimeter-wave radar and the time difference of receiving the ranging information; the first LORA wireless communication module is used for long-distance wireless transmission of data with low power consumption.

[0009] A further solution is that the alarm station includes a main control module, a second LORA wireless communication module, a first zigbee wireless communication module, an IO module and a second power supply module for powering the alarm station. The main control module establishes a LORA wireless communication connection with the main control MCU through the first LORA wireless communication module and the second LORA wireless communication module, and is connected to the IO module, and inputs a working mode selection signal through the IO module.

[0010] Among them, the working mode includes an automatic protection mode and a manual protection mode. The automatic protection mode is that the main control module automatically sends the shutdown command to the machine control device to realize the shutdown of the machine; the manual protection is that the remote control device manually controls the sending of the shutdown command to the machine control device to realize the shutdown of the machine.

[0011] A further solution is that the alarm station also includes an audible and visual alarm device, which is placed at the railway operation site and is signal-connected to the main control module for receiving the alarm signal output by the main control module in the automatic protection mode and performing audible and visual alarm according to the alarm signal.

[0012] A further solution is that the remote control device includes a first single-chip microcomputer, a second ZigBee wireless communication module, a display screen, a button module and a third power supply module for powering the device. The first single-chip microcomputer is connected to the display screen and the button module respectively, and is used to process the incoming vehicle information and output it to the display screen for display, and input manual control instructions through the button module, and send the shutdown instruction to the tool control device through the ZigBee wireless communication network according to the manual control instruction.

[0013] A further solution is that the tool control device is placed in the tool, and includes a second single-chip microcomputer, a third ZigBee wireless communication module, a relay drive module and a fourth power supply module for powering the device. The second single-chip microcomputer is used to output a first drive signal to the relay drive module according to the shutdown instruction. The action contacts of the relay drive module are connected to the power switch circuit of the tool, and are used to cut off the power supply of the tool according to the first drive signal to achieve automatic shutdown.

[0014] A further solution is that it also includes an alarm terminal, which includes a third single-chip microcomputer, a third ZigBee wireless communication module, an electric shock alarm drive module, an acoustic and light alarm drive module, and a fifth power supply module for powering the alarm terminal. The third single-chip microcomputer establishes a ZigBee wireless communication connection with the alarm station and the remote control device to receive the shutdown instruction, and outputs a third drive signal and a fourth drive signal to the electric shock alarm drive module and the acoustic and light alarm drive module respectively according to the shutdown instruction. The electric shock alarm drive module drives the electric shock sheet to output a low-voltage electric shock for tactile alarm according to the third drive signal, and the acoustic and light alarm drive module drives the acoustic and light device for acoustic and light alarm according to the fourth drive signal.

[0015] A further solution is that the alarm station, remote control device, tool control device, and alarm terminal are networked in routing mode through the first zigbee wireless communication module, the second zigbee wireless communication module, the third zigbee wireless communication module, and the fourth zigbee wireless communication module respectively.

[0016] A long-distance safe evacuation protection method for railway operation, applied to a long-distance safe evacuation protection system for railway operation, comprising:

[0017] S1: The system is powered on, each device is turned on and the working mode of the alarm station is selected. The remote control device sends a teaming command to the machine control device through the ZigBee wireless communication network and performs teaming.

[0018] S2: Determine whether the team formation is completed. If it is completed, the remote control device enters the standby state, the machine control device transfers the remote control device ID with which it is teamed, and controls the machine to perform railway operations; if it is not completed, continue to form a team.

[0019] S3: The train sensing monitoring device continuously monitors the passing status of rail vehicles and sends the monitoring information to the alarm station via the LORA wireless communication network.

[0020] S4: Determine whether a rail vehicle passes by according to the monitoring information. If not, repeat step S3; if yes, in the automatic protection mode, the alarm station automatically sends a shutdown command to the machine control device through the ZigBee wireless communication network, and the machine control device controls the machine to stop.

[0021] S5: In the manual protection mode, the alarm station sends the incoming vehicle information to the remote control device for display, and determines whether the remote control device enters a manual stop command. If so, the remote control device sends the stop command to the machine control device through the ZigBee wireless communication network, otherwise it continues to standby.

[0022] S6: Determine whether the stop instruction comes from the remote control device ID teamed with the machine control device. If so, the machine control device controls the machine to stop; otherwise, the machine continues to perform railway operations.

[0023] A further solution is to further include S21: the remote control device sends heartbeat data to the tool control device at a regular interval.

[0024] The process also includes S22: determining whether the machine control device has received the heartbeat data, and if so, repeating step S21; if not, controlling the machine to stop.

[0025] It can be seen that the present invention has the following beneficial effects:

[0026] 1. The present invention sets a train sensing monitoring device at a measuring point far away from the railway operation site, continuously monitors the passing information of rail vehicles, and sends the monitoring data to the alarm station through the LORA wireless communication network to determine whether there are rail vehicles passing the measuring point, thereby realizing long-distance monitoring of the train passing status, thereby leaving sufficient reaction time to ensure the safe evacuation of personnel; the security personnel outside the track line can set the working mode of the alarm station according to the actual situation, and select the automatic protection mode to monitor the entry and exit of rail vehicles in an unattended manner, and automatically remotely control the shutdown or start-up of on-site operating equipment, and timely and effectively assist and remind personnel to evacuate through sound, flashing warning, vibration or even electric shock, so as to fully protect the life safety of construction personnel. Compared with the traditional solution that relies on manual dragging or simply uses sound and light alarms, the traditional solution is completely inapplicable, especially in harsh environments, such as wind-powered snowplows used in line snow removal environments. When this equipment is working, the equipment has a large noise and strong vibration, and general calls and vibration reminders have almost no effect. The present invention can remotely control the shutdown of machinery by remotely monitoring the traffic status of vehicles, ensuring that machinery operators can evacuate safely without machinery working noise, and provide auxiliary alarms through a variety of alarm methods to remind construction personnel to evacuate the rail area to the greatest extent.

[0027] 2. The present invention adopts millimeter-wave radar as a sensor for monitoring the traffic status of rail vehicles. It has the advantages of high penetration, accurate distance measurement, real-time monitoring, multi-target detection and low power consumption. It can still work normally and achieve accurate distance measurement even in adverse weather conditions.

[0028] 3. The present invention adopts the LORA wireless communication system to transmit long-distance monitoring data, which has the advantages of long transmission distance, low power consumption, strong anti-interference, etc. It can maintain stable communication in a noisy wireless environment, thereby improving the reliability of communication.

[0029] 4. All equipment at the construction site of the present invention realizes data communication through the Zigbee self-organizing network. Zigbee wireless communication has the advantages of low power consumption, high efficiency and reliability, and strong network scalability. Since the Zigbee network of each device is configured as a router, the network can have no data center, and any two devices can realize data communication. The system can work without a remote control device by setting an automatic protection mode, and can also work without an alarm station by setting a manual protection mode. Therefore, compared with the traditional one-to-one or one-to-many control method, the present invention can flexibly form a team according to the actual operation situation of the railway site, and freely increase or decrease the networked equipment, which greatly improves the applicability of the system in different railway environments.

[0030] 5. The present invention has more diverse and comprehensive safety protection mechanisms, including remote automatic or remote control of machine shutdown reminders, sound and light alarms through large sound and light alarm devices installed on site, indicator light alarms through machine control devices installed on the machines, and sound and light or even electric shock alarms through alarm terminals worn by construction personnel. Therefore, the present invention is widely applicable to various safety assurance tasks in the process of railway construction operations, is not subject to factors such as noise emitted by various machines, geographical environment restrictions, and climatic conditions, and can fully meet safety protection needs.

[0031] 6. The present invention adopts the ZigBee star networking mode, and the airborne control device at the operating end only receives instructions and does not send instructions to the outside, thereby reducing the amount of data interaction and effectively preventing the problem of interactive data occupying channels when there are multiple working groups. The data transmission volume is minimized in the same network, and the control instructions of the remote control device can be sent and received in a timely manner, further improving the stability of system control.

[0032] 7. The present invention adopts a mechanism in which the remote control device continuously sends heartbeats, that is, sends heartbeat data packets to the machine control device at fixed intervals. If the machine control device does not receive the heartbeat data packet for a long time, it will successively issue an alarm prompt and control the machine to shut down, so as to prevent safety hazards caused by the lack of safety protection functions due to communication interruption.

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the long-distance safe evacuation protection system for railway operations of the present invention.

[0035] Figure 2 It is a schematic diagram of the train induction monitoring device of the present invention.

[0036] Figure 3 It is a schematic diagram of an alarm station of the present invention.

[0037] Figure 4 It is a schematic diagram of a remote control device of the present invention.

[0038] Figure 5 It is a schematic diagram of the machine control device of the present invention.

[0039] Figure 6 It is a circuit schematic diagram of the second single-chip microcomputer of the present invention.

[0040] Figure 7 It is a circuit schematic diagram of the third Zigbee wireless communication module of the present invention.

[0041] Figure 8 It is a circuit schematic diagram of the relay drive module of the present invention.

[0042] Fig. 9 It is a circuit principle diagram of the indicator light driving module of the present invention.

[0043] Fig.10 It is a schematic diagram of the alarm terminal of the present invention.

[0044] Fig.11 It is a schematic diagram of the network structure of the system of the present invention.

[0045] Fig.12 The present invention is a flow chart of a long-distance safe evacuation protection method for railway operations.

[0046] Fig.13 The present invention is a flowchart of the remote control device and the machine control device. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] A long-distance safe evacuation protection system embodiment for railway operations

[0049] See also Figure 1The present invention relates to a long-distance safe evacuation protection system for railway operations, comprising a train sensing monitoring device 10, an alarm station 20, a remote control device 30 and a machine control device 40. The train sensing monitoring device 10 is placed at a track measurement point far away from the railway operation site, and uses a millimeter wave radar to continuously measure the distance and send the distance measurement result to the alarm station 20 through wireless communication; a zigbee wireless communication network is established between the alarm station 20, the remote control device 30 and the machine control device 40, and the alarm station 20 is used to analyze the passing state and speed of the rail vehicle according to the distance measurement result to obtain the incoming vehicle information, and output a stop instruction according to the incoming vehicle information, and automatically send the stop instruction to the machine control device 40 through the zigbee wireless communication network; or the alarm station 20 sends the incoming vehicle information to the remote control device 30 through the zigbee wireless communication network, and the remote control device 30 is used to process and display the incoming vehicle information, and output the stop instruction to the machine control device 40 through remote control; the machine control device 40 is used to control the machine in the railway site operation to stop according to the stop instruction.

[0050] Specifically, this embodiment comprehensively determines the location of the measurement point based on factors such as the actual construction area, the number of construction personnel, the construction environment, and the construction task, ensuring that sufficient time is reserved for warnings and safe evacuation of personnel and construction facilities.

[0051] See also Figure 2 In this embodiment, the train sensing monitoring device 10 includes a first millimeter wave radar 11, a second millimeter wave radar 12, a main control MCU 13, a first LORA wireless communication module 14 and a first power supply module 15 for powering the device. The first millimeter wave radar 11 and the second millimeter wave radar 12 are placed at intervals to measure the distance of the passing rail vehicles, and output the ranging information to the main control MCU 13 in sequence according to the ranging time; the main control MCU 13 is used to determine whether there is a rail vehicle passing according to the ranging information, and calculate the passing speed according to the interval distance between the first millimeter wave radar 11 and the second millimeter wave radar 12 and the time difference of receiving the ranging information; the first LORA wireless communication module 14 is used for long-distance wireless transmission of data with low power consumption.

[0052] Specifically, the passing state analysis and speed calculation of the rail vehicle in this embodiment are as follows:

[0053] Assume that the first millimeter-wave radar 11 and the second millimeter-wave radar 12 are arranged front and back on the track side in the direction of the train, the first millimeter-wave radar 11 and the second millimeter-wave radar 12 perform continuous ranging and send their respective ranging results to the alarm station 20 through wireless communication. When a rail vehicle passes by, the ranging result dr1 of the first millimeter-wave radar 11 changes first, for example, from dr1=50 to dr1=3. At this time, it is considered that the passage of the rail vehicle triggers the first millimeter-wave radar 11. The main control MCU13 monitors the ranging change of the first millimeter-wave radar 11, determines that a rail vehicle passes, and starts timing; when the ranging result dr2 of the second millimeter-wave radar 12 also changes in the distance value within a certain error, such as dr2=50 to dr2=2.9, it is considered that the passage of the rail vehicle triggers the second millimeter-wave radar 12, and the timing is ended, and the triggering interval time of the first millimeter-wave radar 11 and the second millimeter-wave radar 12 is t. The main control MCU 13 can calculate the travel speed v of the rail vehicle according to the above timing result t, the installation position difference dh between the first millimeter wave radar 11 and the second millimeter wave radar 12, and the speed calculation formula: dh / t.

[0054] Specifically, in this embodiment, when the ranging result of the first millimeter-wave radar 11 changes again, and the value is the value before the vehicle passes, such as from dr1=3 to dr1=50, and the ranging result of the second millimeter-wave radar 12 also changes again, and the value is the value before the vehicle passes, such as from dr1=2.9 to dr1=50, at this time, it is considered that the rail vehicle has completely passed, the main control MCU13 cancels each alarm signal, and re-enters the monitoring cycle.

[0055] See also Figure 3 In this embodiment, the alarm station 20 includes a main control module 21, a second LORA wireless communication module 22, a first zigbee wireless communication module 23, an IO module 25, and a second power supply module 26 for powering the alarm station 20. The main control module 21 establishes a LORA wireless communication connection with the main control MCU 13 through the first LORA wireless communication module 14 and the second LORA wireless communication module 22, and is connected to the IO module 25, and inputs the working mode selection signal through the IO module 25.

[0056] Specifically, the alarm station 20 of this embodiment is placed at the construction site, and is used to push information and control the shutdown of machinery to the manual remote control device 30 equipped for the safety officer and the alarm terminal 50 equipped for the construction personnel, and at the same time activate the sound and light alarm to remind the construction personnel to evacuate the rail area to the greatest extent.

[0057] Among them, the working mode includes an automatic protection mode and a manual protection mode. The automatic protection mode is that the main control module 21 automatically sends the shutdown command to the machine control device 40 to realize the shutdown of the machine; the manual protection is to manually control the remote control device 30 to send the shutdown command to the machine control device 40 to realize the shutdown of the machine.

[0058] Specifically, the alarm station 20 of this embodiment is equipped with both LORA wireless communication and Zigbee wireless communication systems. The LORA wireless communication system is used to automatically detect the long-distance communication of the train sensing monitoring device 10 for entering and leaving the rail vehicle to receive the rail vehicle passage information. The Zigbee wireless communication system is used for the alarm station 20 to communicate with the remote control device 30, the machine control device 40, and the alarm terminal 50 to wirelessly transmit the incoming vehicle information, and at the same time, the alarm light flashes and the tweeter broadcasts the incoming vehicle information for reminder.

[0059] Specifically, in this embodiment, the user can quickly select the working mode of the alarm station 20 through the IO module 25. The automatic protection mode is that the alarm station 20 automatically sends a shutdown command after receiving the incoming vehicle information, and starts the sound and light alarm, which can be used in unattended occasions; the manual protection mode is that the alarm station 20 sends the information to the remote control device 30 held by the safety officer after receiving the incoming vehicle information, and the safety officer decides whether to remotely shut down according to the actual situation.

[0060] In this embodiment, the alarm station 20 also includes an audible and visual alarm device 24, which is placed at the railway operation site and is signal-connected to the main control module 21. It is used to receive the alarm signal output by the main control module 21 in the automatic protection mode and to issue an audible and visual alarm based on the alarm signal.

[0061] Specifically, the sound and light alarm device of this embodiment is a railway-specific warning light and a tweeter.

[0062] See also Figure 4 In this embodiment, the remote control device 30 includes a first single-chip microcomputer 31, a second zigbee wireless communication module 32, a display screen 34, a button module 33 and a third power supply module 36 for powering the device. The first single-chip microcomputer 31 is connected to the display screen 34 and the button module 33 respectively, and is used to process the incoming vehicle information and output it to the display screen 34 for display, and input manual control instructions through the button module 33, and send the shutdown instruction to the tool control device 40 through the zigbee wireless communication network according to the manual control instruction.

[0063] Specifically, the remote control device 30 of this embodiment takes the first single-chip microcomputer 31 as the core, and is equipped with a zigbee wireless communication module to realize the sending of control commands and status reading. The button module 33 and the display screen 34 are used to complete the human-computer interaction function, including the display of the number of networked working end devices, the display of working status, etc., and realizes the opening and closing of manual remote control equipment, the opening and closing of the alarm terminal 50 and the alarm station 20 through the zigbee wireless communication network. Remote control.

[0064] Specifically, the key module 33 of this embodiment includes four key inputs, namely a stop button, a start button, a function button 1 and a function button 2. Function button 1 and function button 2 are used for functional operation control of the remote control device 30, such as selection, debugging, and team formation of remote control objects.

[0065] Specifically, the third power module 36 of this embodiment uses the internal battery of the remote control device 30 as the power output, including but not limited to a lithium battery, two No. 7 batteries, 9V battery, etc. The third power module 36 is integrated with a power management system, and the first single-chip microcomputer 31 can read information such as battery power through the power management system, and send the battery information to the display screen 34 or display it by the first status indicator.

[0066] Specifically, the remote control device 30 of this embodiment further includes a first status indicator light and a first interface module 35 , wherein the first status indicator light is used to display the switch status, power status and fault status of the remote control device 30 , and the first interface module 35 is a debugging and expansion interface.

[0067] See also Figure 5 In this embodiment, a tool control device 40 is placed in the tool, which includes a second single-chip microcomputer 41, a third ZigBee wireless communication module 42, a relay drive module 43 and a fourth power supply module 46 for powering the device. The second single-chip microcomputer 41 is used to output a first drive signal to the relay drive module 43 according to the shutdown instruction. The action contact of the relay drive module 43 is connected to the power switch circuit of the tool, and is used to cut off the power supply of the tool according to the first drive signal to achieve automatic shutdown.

[0068] Specifically, the fourth power module 46 of this embodiment adopts a dual power supply mode of internal battery power supply + external charging. The internal battery adopts a lithium battery pack. The machine control device 40 is also provided with a charging interface. When long-term work is required and the power is insufficient, it can be powered by an external power supply.

[0069] Specifically, the machine control device 40 of this embodiment also includes an indicator light driving module 44 and a second interface module 45. The indicator light driving module 44 is connected to the second single-chip microcomputer 41, and is used to drive the second status indicator light to emit light according to the driving signal of the second single-chip microcomputer 41. The light colors of the second status indicator light include yellow, green, and red. The second status indicator light is red, indicating that the machine is in a stopped state. The second status indicator light is green, indicating that the machine is in a safe and operable state. The second status indicator light is yellow, indicating that the machine is in a state waiting for communication connection. The second interface module 45 is a debugging and expansion interface.

[0070] Taking a wind-powered snowplow as an example, after the machine control device 40 is powered on and started, it first controls the second state indicator light to light up yellow, indicating that the system is waiting for the remote control device 30 to connect. At this time, the remote control device 30 needs to press the stop or start button for testing. By observing the lighting state of the second state indicator light, it is observed whether the machine control device 40 can control the wind-powered snowplow to make the corresponding stop or start action. If it can, it means that the machine can work normally, otherwise it fails and does not meet the operating conditions: when the remote control device 30 presses the start button, the machine control device 40 receives the instruction, controls the second state indicator light to turn green, and controls the relay REY1 to close, and starts the wind-powered snowplow's fan. When the remote control device 30 presses the stop button, the machine control device 40 receives the stop instruction, controls the second state indicator light to turn red, and controls the relay REY1 to disconnect, and controls the wind-powered snowplow's fan to stop.

[0071] See also Figure 6-9 Specifically, the tool control device 40 of this embodiment is a relatively small integrated circuit board, which uses three XHB interfaces with locks as input and output interfaces to prevent loosening due to vibration and pulling. The integrated circuit board can be installed inside the tool without changing the size, function and storage space of the original tool. At the same time, it can also be equipped with a battery, a waterproof housing, and a waterproof connector to connect to the tool as an independent control module, thereby achieving wide compatibility with different types of machines.

[0072] See also Fig.10In this embodiment, it also includes an alarm terminal 50, which includes a third single-chip microcomputer 51, a fourth ZigBee wireless communication module 52, an electric shock alarm driving module 53, an acoustic and light alarm driving module 54, and a fifth power supply module 56 for powering the alarm terminal 50. The third single-chip microcomputer 51 establishes a ZigBee wireless communication connection with the alarm station 20 and the remote control device 30, and is used to receive the shutdown command, and output a third drive signal and a fourth drive signal to the electric shock alarm driving module 53 and the acoustic and light alarm driving module 54 according to the shutdown command. The electric shock alarm driving module 53 drives the electric shock sheet to output a low-voltage electric shock for tactile alarm according to the third drive signal, and the acoustic and light alarm driving module 54 drives the acoustic and light device for acoustic and light alarm according to the fourth drive signal.

[0073] Specifically, the alarm terminal 50 of this embodiment further includes a third interface module 55, and the third interface module 55 is a debugging and expansion interface.

[0074] See also Fig.11 In this embodiment, the alarm station 20, the remote control device 30, the tool control device 40, and the alarm terminal 50 are networked in routing mode through the first Zigbee wireless communication module 23, the second Zigbee wireless communication module 32, the third Zigbee wireless communication module 42, and the fourth Zigbee wireless communication module 52 respectively.

[0075] Specifically, the communication frequency band of the LORA wireless communication module in this embodiment is low, usually 433MHz, and has good anti-blocking data communication performance, while the zigbee wireless communication module can enable any two devices in the network to have data communication capabilities. This structure can greatly reduce the problem of communication interruption caused by environmental interference and long distance. The present invention combines the two, fully utilizing the advantages of LORA and zigbee communication, using zigbee communication for short-distance networking and LORA communication for long-distance.

[0076] Specifically, this embodiment adopts the zigbee star networking mode, so that even devices that are not in the same team can act as repeaters to relay control commands, thereby greatly improving the reliability of system data transmission. This networking and setting mode makes the system not dependent on the data center, and any two different devices can be combined to form a security protection system, fully improving the applicability of the system in different scenarios.

[0077] A long-distance safe evacuation protection method embodiment for railway operations

[0078] See also Fig.12The present invention relates to a long-distance safe evacuation protection method for railway operations, which is applied to a long-distance safe evacuation protection system for railway operations, and comprises:

[0079] S1: The system is powered on, each device is turned on and the working mode of the alarm station 20 is selected, and the remote control device 30 sends a teaming command to the tool control device 40 through the ZigBee wireless communication network and performs teaming.

[0080] S2: Determine whether the team formation is completed. If it is completed, the remote control device 30 enters the standby state, the machine control device 40 transfers the ID of the remote control device 30 teamed with it, and controls the machine to perform railway operations; if it is not completed, continue to form a team.

[0081] S3: The train sensing monitoring device continuously monitors the passing status of rail vehicles and sends the monitoring information to the alarm station 20 via the LORA wireless communication network.

[0082] S4: Determine whether a rail vehicle passes by according to the monitoring information. If not, repeat step S3; if yes, in the automatic protection mode, the alarm station 20 automatically sends a shutdown command to the machine control device 40 through the ZigBee wireless communication network, and the machine control device 40 controls the machine to shut down.

[0083] S5: In the manual protection mode, the alarm station 20 sends the incoming vehicle information to the remote control device 30 for display, and determines whether the remote control device 30 enters a manual shutdown command. If so, the remote control device 30 sends the shutdown command to the tool control device 40 through the ZigBee wireless communication network, otherwise it continues to standby.

[0084] S6: Determine whether the stop instruction comes from the remote control device 30ID teamed with the machine control device 40. If so, the machine control device 40 controls the machine to stop; otherwise, the machine continues to perform railway operations.

[0085] In this embodiment, the process further includes S21 : the remote control device 30 sends heartbeat data to the tool control device 40 at a regular interval.

[0086] The process also includes S22: determining whether the machine control device 40 has received the heartbeat data, and if so, repeating step S21; if not, controlling the machine to stop.

[0087] Specifically, since the present embodiment adopts the zigbee star networking mode, there may be multiple groups in the same network. In order to reduce the amount of data interaction, the machine control device 40 only receives instructions and does not send instructions to the outside. This setting can effectively prevent the problem that the interactive data will occupy the channel when there are multiple working groups in the network. It can be seen that this method can achieve the minimum data transmission in the same network, and the control instructions of the remote control device 30 can be sent and received in time, further improving the stability of system control. Under this setting, since the machine control device 40 does not send data, its communication connection status cannot be monitored by the remote control device 30. In order to prevent the loss of safety protection function caused by communication interruption, this method adopts the mechanism of the remote control device 30 continuously sending heartbeats, that is, the remote control device 30 sends a heartbeat data packet to the machine control device 40 at a fixed interval. The machine control device 40 starts a timer inside. After not receiving the heartbeat data packet for a long time, the second status indicator light is first controlled to turn yellow to remind the construction workers to pay attention to the use of the machine. If the heartbeat packet is not received after a period of time, the machine is controlled to stop to prevent safety hazards.

[0088] See also Fig.13 Specifically, the remote control device 30 and the tool control device 40 of this embodiment are both provided with independent IDs when they leave the factory, and can be freely configured into various teaming modes such as one-to-many, one-to-one, many-to-one, many-to-many, etc. according to the actual situation on site. Among them, the specific implementation method of the one-to-many working mode is:

[0089] Before the operation begins, turn on the remote control device 30A, press function button 1, and start the group joining command. The command contains the ID of the remote control device 30A. At this time, the remote control device 30 will continue to send team formation commands at a fixed frequency. Then turn on the tool control device 40 that needs to join group A. After receiving the team formation command broadcast by the remote control device 30A, the tool control device 40 stores the team formation number and flashes the status indicator light, indicating that the team joining is successful. After all the tool control devices 40 that need to be teamed have been successfully joined, press function button 2 to stop team formation; turn on the remote control device 30B and repeat the above steps to form group B. Since the team formation command contains the ID of the remote control device 30, and the ID of the remote control device 30 will not be repeated, the control commands between each group can be effectively guaranteed to be independent.

[0090] When the stop or start button is pressed on the remote control device 30A, all the tool control devices 40 of group A will first determine whether the command source is the team number of group A after receiving the command. If so, they will control relay REY1 to be turned on or off to realize the safety protection control function of the hair dryer; the same is true for all the tool control devices 40 of group B.

[0091] Among them, when the remote control device 30A starts to form a team, only one tool control device 40 is turned on to form a team with it, that is, one-to-one control is achieved. If the remote control device 30A and the remote control device 30B are turned on at the same time, and the team formation command is initiated at the same time, one or more tool control devices 40 are turned on at this time. After receiving the team formation command from the remote control device 30A and the remote control device 30B, the tool control device 40 will record the team formation number A and the team formation number B at the same time, and the working mode of multiple remote control devices 30 controlling one or more tool control devices 40 can be realized. It can be seen that the team formation method of the present invention can realize a very flexible team formation plan, which is suitable for the scenario where multiple working groups work simultaneously in a rail vehicle station and do not affect each other.

[0092] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A long-distance safe evacuation protection system for railway operations, characterized in that: include: A train sensing and monitoring device, an alarm station, a remote control device and a machine control device, wherein the train sensing and monitoring device is placed at a track measurement point far away from a railway operation site, uses a millimeter wave radar for continuous distance measurement and sends the distance measurement result to the alarm station by wireless communication; a ZigBee wireless communication network is established between the alarm station, the remote control device and the machine control device, the alarm station is used to analyze the passing state and speed of the rail vehicle according to the distance measurement result to obtain the incoming vehicle information, and output a stop instruction according to the incoming vehicle information, and automatically send the stop instruction to the machine control device through the ZigBee wireless communication network; or the alarm station sends the incoming vehicle information to the remote control device through the ZigBee wireless communication network, the remote control device is used to process and display the incoming vehicle information, and output the stop instruction to the machine control device by remote control; the machine control device is used to control the stopping of the machine in the railway operation site according to the stop instruction.

2. A long-distance safe evacuation protection system for railway operations according to claim 1, characterized in that: The train sensing and monitoring device includes a first millimeter-wave radar, a second millimeter-wave radar, a main control MCU, a first LORA wireless communication module and a first power supply module for powering the device. The first millimeter-wave radar and the second millimeter-wave radar are placed at intervals to measure the distance of the passing rail vehicles, and output the ranging information to the main control MCU in sequence according to the ranging time; the main control MCU is used to determine whether a rail vehicle passes according to the ranging information, and calculate the passing speed according to the interval distance between the first millimeter-wave radar and the second millimeter-wave radar and the time difference of receiving the ranging information; the first LORA wireless communication module is used for long-distance wireless transmission of data with low power consumption.

3. A long-distance safe evacuation protection system for railway operations according to claim 2, characterized in that: The alarm station includes a main control module, a second LoRa wireless communication module, a first ZigBee wireless communication module, an IO module, and a second power supply module for powering the alarm station. The main control module establishes a LoRa wireless communication connection with the main control MCU through the first LoRa wireless communication module and the second LoRa wireless communication module, and is connected to the IO module, and a working mode selection signal is input through the IO module; Among them, the working mode includes an automatic protection mode and a manual protection mode. The automatic protection mode is that the main control module automatically sends the shutdown command to the machine control device to realize the shutdown of the machine; the manual protection is that the remote control device manually controls the sending of the shutdown command to the machine control device to realize the shutdown of the machine.

4. A long-distance safe evacuation protection system for railway operations according to claim 3, characterized in that: The alarm station also includes an audible and visual alarm device, which is placed at the railway operation site and is signal-connected to the main control module. The device is used to receive the alarm signal output by the main control module in the automatic protection mode and to issue an audible and visual alarm according to the alarm signal.

5. A long-distance safe evacuation protection system for railway operations according to claim 1, characterized in that: The remote control device includes a first single-chip microcomputer, a second ZigBee wireless communication module, a display screen, a button module and a third power supply module for powering the device. The first single-chip microcomputer is connected to the display screen and the button module respectively, and is used to process the incoming vehicle information and output it to the display screen for display, and input manual control instructions through the button module, and send the shutdown instruction to the tool control device through the ZigBee wireless communication network according to the manual control instruction.

6. A long-distance safe evacuation protection system for railway operations according to claim 1, characterized in that: The tool control device is placed in the tool, and includes a second single-chip microcomputer, a third ZigBee wireless communication module, a relay drive module, and a fourth power supply module for powering the device. The second single-chip microcomputer is used to output a first drive signal to the relay drive module according to the shutdown instruction. The action contacts of the relay drive module are connected to the power switch circuit of the tool, and are used to cut off the power supply of the tool according to the first drive signal to achieve automatic shutdown.

7. A long-distance safe evacuation protection system for railway operations according to claim 1, characterized in that: It also includes an alarm terminal, which includes a third single-chip microcomputer, a third ZigBee wireless communication module, an electric shock alarm drive module, an acoustic and light alarm drive module, and a fifth power supply module for powering the alarm terminal. The third single-chip microcomputer establishes a ZigBee wireless communication connection with the alarm station and the remote control device to receive the shutdown instruction, and outputs a third drive signal and a fourth drive signal to the electric shock alarm drive module and the acoustic and light alarm drive module respectively according to the shutdown instruction. The electric shock alarm drive module drives the electric shock sheet to output a low-voltage electric shock for tactile alarm according to the third drive signal, and the acoustic and light alarm drive module drives the acoustic and light device for acoustic and light alarm according to the fourth drive signal.

8. A long-distance safe evacuation protection system for railway operations according to any one of claims 1 to 7, characterized in that: The alarm station, remote control device, tool control device and alarm terminal are networked in routing mode through the first zigbee wireless communication module, the second zigbee wireless communication module, the third zigbee wireless communication module and the fourth zigbee wireless communication module respectively.

9. A long-distance safe evacuation protection method for railway operations, characterized in that: A long-distance safe evacuation protection system for railway operations as described in any one of claims 1 to 8, comprising: S1: The system is powered on, each device is turned on and the alarm station working mode is selected. The remote control device sends a teaming command to the tool control device through the ZigBee wireless communication network and performs teaming; S2: Determine whether the team formation is completed. If it is completed, the remote control device enters a standby state, the machine control device transfers the remote control device ID with which the team is formed, and controls the machine to perform railway operations; if it is not completed, continue to form a team; S3: The train sensing monitoring device continuously monitors the passing status of rail vehicles and sends the monitoring information to the alarm station through the LORA wireless communication network; S4: judging whether a rail vehicle passes by according to the monitoring information, if not, repeating step S3; if yes, in the automatic protection mode, the alarm station automatically sends a stop command to the machine control device through the ZigBee wireless communication network, and the machine control device controls the machine to stop; S5: In the manual protection mode, the alarm station sends the vehicle information to the remote control device for display, and determines whether the remote control device enters a manual stop command. If so, the remote control device sends the stop command to the tool control device through the ZigBee wireless communication network, otherwise it continues to standby; S6: Determine whether the stop instruction comes from the remote control device ID teamed with the machine control device. If so, the machine control device controls the machine to stop; otherwise, the machine continues to perform railway operations.

10. A long-distance safe evacuation protection method for railway operations according to claim 9, characterized in that: The method further comprises: S21: the remote control device sends heartbeat data to the tool control device at a fixed time; The process also includes S22: determining whether the machine control device has received the heartbeat data, and if so, repeating step S21; if not, controlling the machine to stop.

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