Train approach alarm device based on radar induction

Abstract

The utility model discloses a train approach alarm device based on radar induction, which comprises a first alarm device and a second alarm device, the first alarm device is arranged on a train starting side of a first crossing, and the second alarm device is arranged on a train leaving side of a second crossing; each of the first alarm device and the second alarm device structurally comprises a support frame, a monitoring assembly, a sound-light alarm device and a signal transmitting and receiving device, the support frame is arranged on the ground on one side of the crossing, the monitoring assembly, the sound-light alarm device and the signal transmitting and receiving device are mounted on the support frame, the sound-light alarm device is electrically connected with the monitoring assembly, and the signal transmitting and receiving device is electrically connected with the monitoring assembly. The signal transmitting and receiving device is electrically connected with the monitoring assembly and the sound-light alarm device. And the signal transmitting and receiving device of the first alarm device and the signal transmitting and receiving device of the second alarm device are mutually transmitted through wireless signals.

Description

Technical Field

[0001] This utility model relates to the field of alarm device technology, and in particular to a train proximity alarm device based on radar sensing. Background Technology

[0002] Railway stations and yards have numerous turnouts and tracks, along with a large number of equipment and components. To ensure the safe and smooth operation of the railway, railway rolling stock, track maintenance, and signaling departments must regularly inspect and maintain these facilities. To standardize safety management at stations and yards, level crossings are typically set up at both ends for employees to cross the tracks. However, it is difficult for employees to know the departure time of trains when crossing mainline level crossings, posing a safety hazard. In our section's starting yard, track 1 only has trains coming from one side, and the two level crossings are approximately 800 meters apart. The starting side is closer to the workshop, and the trains are in the initial departure phase. It is difficult to install a train monitoring device at the front of the starting side, and since the two level crossings are not far apart, the alarm devices at both crossings need to be linked for simultaneous alarm activation.

[0003] Currently, alarm devices used during railway maintenance typically employ two schemes. The first involves setting up protected zones and observation rooms on both the up and down sections of the railway, assigning multiple safety officers and on-site dispatchers to monitor train operation plans in real time. When a train passes, a warning is issued via wireless communication devices such as walkie-talkies and mobile phones. To allow maintenance and construction personnel sufficient time to evacuate the tracks, the protected zones are relatively long, requiring a large number of personnel. This method results in a significant waste of manpower, financial resources, and materials during railway maintenance, increasing labor costs. The second scheme uses magnetic heads installed on the tracks for sensing. However, this has the following problems: installation requires working on the train tracks, posing safety risks to installers. Installation must also be done during maintenance windows, making installation and subsequent maintenance cumbersome. Furthermore, during train track maintenance, the magnetic head must be removed before the maintenance window and reinstalled afterward, making maintenance extremely inconvenient.

[0004] Among existing alarm devices, such as the Chinese utility model patent with patent number CN202420908964.5, a quick-installation detection device for train proximity alarms is disclosed, comprising: a column, the column including a base at its bottom, a concave plate horizontally disposed at its top, and a connecting column rotatably disposed within the concave plate cavity, the outer end of the connecting column extending out of the concave plate, and slots a being provided on both sides of the concave plate cavity, the inner cavity of the slots a being fitted with a limiting plate b, the connecting column resting on the limiting plate b; a control box disposed on the outer wall of the column, the control box having a clamp on its rear side provided by bolts and nuts, the clamp being tightly held onto the column; a radar detector inserted into the outer end of the outer wall of the connecting column; and a pin inserted into the outer wall of the connecting column. The device also has the following drawbacks: 1. It cannot simultaneously monitor the track direction and the crossing direction to achieve train monitoring and pedestrian monitoring, and coordinate with the alarm; 2. The device is for alarming a single crossing and is not suitable for alarming two crossings in a starting yard. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a radar-based train approach alarm device that can simultaneously monitor trains and pedestrians, and coordinate alarm prompts for pedestrians at two level crossings.

[0006] This utility model is achieved through the following technical solution:

[0007] A radar-based train approach alarm device includes a first alarm device 1 and a second alarm device 2. The first alarm device 1 is installed on the train departure side of the first level crossing 3, and the second alarm device 2 is installed on the train departure side of the second level crossing 4.

[0008] Both the first alarm device 1 and the second alarm device 2 include the following structures:

[0009] Support frame 11 is set on the ground on one side of the level crossing for installation.

[0010] The monitoring component 12, mounted on the support frame 11, is used to monitor passing trains and pedestrians;

[0011] An audible and visual alarm device 13 is mounted on a support frame 11 and electrically connected to a monitoring component 12, used to alert pedestrians.

[0012] The signal transmitting and receiving device 14 is mounted on the support frame 11 and is electrically connected to the monitoring component 12 and the audible and visual alarm device 13;

[0013] The signal transmitting and receiving device 14 of the first alarm device 1 and the signal transmitting and receiving device 14 of the second alarm device 2 transmit signals to each other wirelessly.

[0014] Furthermore, the monitoring component 12 includes a radar sensing device 121 and a human infrared sensing device 122. The radar sensing device 121 is directed towards the track, and the human infrared sensing device 122 is directed towards the track opening.

[0015] Furthermore, a solar power supply device 15 is also provided on the support frame 11 of the first alarm device 1 and the second alarm device 2. The solar power supply device 15 is electrically connected to the monitoring component 12, the audible and visual alarm device 13, and the signal transmitting and receiving device 14.

[0016] Furthermore, the signal transmitting and receiving device 14 includes a wireless switch 141 and an antenna 142. A power distribution box 16 is provided on the support frame 11. The wireless switch 141 is located inside the power distribution box 16. The antenna 142 is vertically arranged on the top of the support frame 11 and is electrically connected to the wireless switch 141.

[0017] Furthermore, both the radar sensing device 121 and the human infrared sensing device 122 are housed inside the protective casing 17.

[0018] Furthermore, a lightning rod 18 is provided on the top of the support frame 11, and the height of the lightning rod 18 is higher than the height of the antenna 142.

[0019] Furthermore, the first alarm device 1 and the second alarm device 2 are located 2-3 meters away from the track.

[0020] Furthermore, the monitoring angle range of the radar sensing device 121 is 76° left and right and 20° up and down.

[0021] Furthermore, the monitoring angle range of the human infrared sensing device 122 is 120° left and right and 60° up and down.

[0022] Furthermore, the maximum monitoring distance of the human infrared sensing device 122 is not less than 10M.

[0023] The working principle of this utility model:

[0024] This utility model installs a first alarm device 1 and a second alarm device 2 on one side of the first level crossing 3 and the second level crossing 4, respectively. The two sets of radar sensors 121 of the first alarm device 1 and the second alarm device 2 are respectively aimed at the tracks of the first level crossing 3 and the second level crossing 4 to monitor whether a train is passing by. The two sets of human infrared sensors 122 are respectively aimed at the first level crossing 3 and the second level crossing 4 to monitor whether a pedestrian is about to cross the tracks. The two sets of sound and light alarm devices 13 broadcast prompt sounds and flash alarm lights to warn pedestrians at the first level crossing 3 and the second level crossing 4, respectively. The first alarm device 1 and the second alarm device 2 transmit signals wirelessly through two sets of signal transmitting and receiving devices 14.

[0025] Based on the actual situation that only vehicles from the first intersection 3 direction are coming from the starting point of the uphill operation site, and no vehicles will come from the second intersection 4, the radar sensor 121 of the first alarm device 1 at the first intersection 3 simultaneously controls the audible and visual alarm devices 13 of the first alarm device 1 and the second alarm device 2. The human infrared sensor 122 of the first alarm device 1 only controls the audible and visual alarm device 13 of the first alarm device 1, and the human infrared sensor 122 of the second alarm device 2 only controls the audible and visual alarm device 13 of the second alarm device 2.

[0026] When a train approaches from end 3 of the first level crossing, the radar sensor 121 of the first alarm device 1 detects the approaching train and transmits the signal to the audible and visual alarm device 13 of the first alarm device 1. The signal is also sent through the signal transmitting and receiving device 14 of the first alarm device 1. After receiving the signal, the signal transmitting and receiving device 14 of the second alarm device 2 transmits the signal to the audible and visual alarm device 13 of the second alarm device 2, thereby controlling the two sets of audible and visual alarm devices 13 to sound an alarm. When the train passes through the second level crossing 4 and triggers the radar sensor 121 of the second alarm device 2, the voice alarm stops.

[0027] When a worker prepares to cross the first checkpoint 3 or the second checkpoint 4 to enter the detection range of the human infrared sensor 122, the human infrared sensor 122 controls the audible and visual alarm device 13 to sound an alarm. After the worker crosses the checkpoint and is outside the detection range of the human infrared sensor 122, the voice broadcast stops.

[0028] The advantages of this utility model compared to the prior art are:

[0029] This utility model uses the radar sensing device 121 of the first alarm device 1 to simultaneously control the sound and light alarm devices 13 of the first alarm device 1 and the second alarm device 2, so that the first level crossing 3 and the second level crossing 4 can simultaneously broadcast alarm signals of approaching trains, giving advance warning to the staff at the second level crossing 4 to pay attention to the approaching train, and reminding the staff at the first level crossing 3 to pay attention to safety, thereby reducing the safety hazards of vehicles that may cause injury to employees crossing the level crossing.

[0030] This utility model uses a radar sensing device 121 to monitor whether a train is passing by and a human infrared sensing device 122 to monitor whether a pedestrian is about to cross the track. Different prompts are broadcast according to the detected objects, which improves the accuracy of information received by employees and makes it easier for employees to take different protective measures in response to different prompts.

[0031] The lightning rod 18 on the support frame of this utility model can prevent the antenna 142 from being struck by lightning, and prevent lightning from damaging the signal transmitting and receiving device 14, causing the first alarm device 1 and the second alarm device 2 to be interrupted in transmission.

[0032] The monitoring component 12, the audible and visual alarm device 13, and the signal transmitting and receiving device 14 of this utility model are integrated and installed on the support frame 11. The installation and maintenance of the alarm device are not affected by the train, which makes it convenient for staff to install and maintain the alarm device. Attached Figure Description

[0033] Figure 1 This is a diagram showing the usage state of this utility model;

[0034] Figure 2 This is one of the three-dimensional structural schematic diagrams of the alarm device of this utility model;

[0035] Figure 3 This is the second three-dimensional structural schematic diagram of the alarm device of this utility model;

[0036] Figure 4 This is a schematic diagram showing the monitoring direction of the radar sensing device and the human infrared sensing device of this utility model.

[0037] Numbering on the map:

[0038] 1-First alarm device, 11-Support frame, 12-Monitoring components, 121-Radar sensing device, 122-Human infrared sensing device, 13-Audio-visual alarm device, 14-Signal transmitting and receiving device, 141-Wireless switch, 142-Antenna, 15-Solar power supply device, 16-Distribution box, 17-Protective box, 18-Lightning rod;

[0039] 2-Second alarm device;

[0040] 3-First intersection;

[0041] 4-Second intersection. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solution of this utility model, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0043] Example 1:

[0044] like Figure 1-4 As shown, a radar-based train approach alarm device includes a first alarm device 1 and a second alarm device 2. The first alarm device 1 is installed on the train departure side of the first level crossing 3, and the second alarm device 2 is installed on the train departure side of the second level crossing 4. The first alarm device 1 and the second alarm device 2 have the same structure, both including a support frame 11, a monitoring component 12, an audible and visual alarm device 13, and a signal transmitting and receiving device 14.

[0045] In an embodiment, such as Figure 2 , 3As shown, the support frame 11 is a stainless steel column structure with a height of approximately 3.5m. A concrete base is cast using a cast-in-place method, and the support frame 11 is bolted to the concrete base. The concrete base of the first alarm device 1 is 2m from the track and approximately 5m from the second crossing point 4. The concrete base of the second alarm device 2 is 2m from the track and approximately 2m from the second crossing point 4.

[0046] In an embodiment, such as Figure 2 , 3 As shown, the monitoring component 12 includes a radar sensor 121 and a human infrared sensor 122. The radar sensor 121 is directed toward the track, and the human infrared sensor 122 is directed toward the track opening.

[0047] The radar sensing device 121 uses Hikvision DS-TMG034 anti-smashing radar, with a sensing distance of 3m and a monitoring angle range of 76° left and right and 20° up and down.

[0048] The human infrared sensor 122 uses the Black Hawk HY-B1 infrared human intelligent sensing warning voice broadcast speaker. Through the infrared human sensing technology of the infrared probe, it can sense moving human bodies entering the area. Its sensing range is 0-10 meters, 120° left and right, and 60° up and down. The installation height does not exceed 1.5M to prevent the human infrared sensor 122 from failing to detect pedestrians due to being installed too high.

[0049] like Figure 2 , 3 As shown, both the radar sensing device 121 and the human infrared sensing device 122 are installed inside the protective box 17 to prevent rain and snow from affecting the equipment and reducing its service life. Rainwater intrusion can also easily cause short circuits and burn out the equipment.

[0050] In an embodiment, such as Figure 2 , 3 As shown, the audible and visual alarm device 13 is electrically connected to the monitoring component 12. When the train passes through the radar sensor 121 of the first level crossing 3 from the starting point 1, the signal transmitting and receiving device 14 on the second alarm device 2 of the second level crossing 4 will receive the train passing signal and transmit the signal to the audible and visual alarm device 13 of the second alarm device 2. The audible and visual alarm device 13 will emit a prompt sound and flash the alarm light.

[0051] In an embodiment, such as Figure 2 , 3As shown, the signal transmitting and receiving device 14 is electrically connected to the monitoring component 12 and the audible and visual alarm device 13. The signal transmitting and receiving device 14 includes a wireless switch 141 and an antenna 142. The antenna 142 is vertically mounted on the top of the support frame 11 and is electrically connected to the wireless switch 141. The wireless switch 141 is electrically connected to the radar sensor 121. The first alarm device 1 and the second alarm device 2 transmit wireless signals through the two signal transmitting and receiving devices 14. The signal transmitting and receiving device 14 uses a wireless switch 141 of model LR101, with a transmission distance of 5000M and an operating frequency band of 470MHz.

[0052] In this embodiment, small components such as the main switch of the alarm device and the wireless switch 141 on the support frame 11 are all installed in the distribution box 16 for easy wiring and maintenance.

[0053] In this embodiment, the solar power supply device 15 is used to power the monitoring component 12, the audible and visual alarm device 13, and the signal transmitting and receiving device 14. By generating electricity through solar energy, the construction of pipeline layout is reduced, and the installation efficiency of the first alarm device 1 and the second alarm device 2 is improved.

[0054] In this embodiment, the height of the lightning rod 18 at the top of the support frame 11 is at least 200 mm higher than the height of the antenna 142, to prevent the antenna 142 from being struck by lightning, damaging the signal transmitting and receiving device 14, and causing the first alarm device 1 and the second alarm device 2 to be interrupted in transmission.

[0055] The working principle of this utility model is as follows:

[0056] Based on the actual situation that only vehicles from the first intersection (level 3) of the upstream starting work area are coming from the second intersection (level 4), a first alarm device 1 and a second alarm device 2 are manufactured. The first intersection (level 3) is for the Kunming direction, and the second intersection (level 4) is for the Guiyang direction.

[0057] 1. The first alarm device 1 at the first checkpoint 3 uses a human infrared sensor 121 to control the sound and light alarm device 13.

[0058] When a worker prepares to cross the first access point 3 and enter the detection range of the human body infrared sensor 122, the audible and visual alarm device 13 of the first access point 3 will broadcast a voice alarm reminder: "Crossing the line, point and shout, be careful" and flash the alarm light. The voice broadcast will stop when the worker crosses the access point and is outside the detection range of the human body infrared sensor 122.

[0059] 2. The second alarm device 2 at the second access point 4 is controlled by the radar sensing device 121 and the human infrared sensing device 122 of the first alarm device 1 at the first access point 3.

[0060] When a train passes through the first level crossing 3 and triggers the radar sensor 121 of the first alarm device 1, the audible and visual alarm device 13 of the second alarm device 2 receives the signal and broadcasts a voice alarm reminder, "Train from Kunming is approaching, pedestrians please be careful," and flashes the alarm light to remind pedestrians at the second level crossing 4; when a train passes through the second level crossing 4 and triggers the radar sensor 121 of the second alarm device 2, the voice alarm stops.

[0061] Meanwhile, the second alarm device 2 at the second intersection 4 is equipped with a human infrared sensor 122. When a worker crosses the second intersection 4 to enter the sensing area, the voice alarm of the sound and light alarm device 13 of the second alarm device 2 will broadcast a voice alarm reminder of "Crossing the line, point and shout, pay attention to safety" and flash the alarm light.

[0062] It should be noted that the technical solution of this utility model has been described in detail above, and the principle of this utility model has been described. The above description of the working principle is only for the purpose of helping to understand the core idea of ​​this utility model. It should be pointed out that for those skilled in the art, improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

[0063] Modifications or additions to the described specific embodiments, or substitutions made by those skilled in the art to which this utility model pertains, can be made or replaced in a similar manner, as long as they do not deviate from the structure of this utility model or exceed the scope defined by the claims, and all such modifications and additions shall fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent shall be determined by the appended claims.

Claims

1. A train proximity alarm device based on radar sensing, characterized in that, It includes a first alarm device (1) and a second alarm device (2). The first alarm device (1) is set on the train departure side of the first level crossing (3), and the second alarm device (2) is set on the train departure side of the second level crossing (4). The first alarm device (1) and the second alarm device (2) both include the following structures: The support frame (11) is set on the ground on one side of the level crossing for installation. The monitoring component (12), mounted on the support frame (11), is used to monitor passing trains and pedestrians; An audible and visual alarm device (13) is installed on a support frame (11) and electrically connected to a monitoring component (12) for use in alarming and alerting pedestrians. The signal transmitting and receiving device (14) is mounted on the support frame (11) and is electrically connected to the monitoring component (12) and the audible and visual alarm device (13); The signal transmitting and receiving device (14) of the first alarm device (1) and the signal transmitting and receiving device (14) of the second alarm device (2) transmit signals to each other wirelessly.

2. The radar-sensing-based train proximity alarm device according to claim 1, characterized in that: The monitoring component (12) includes a radar sensing device (121) and a human infrared sensing device (122). The radar sensing device (121) is directed toward the track, and the human infrared sensing device (122) is directed toward the track entrance.

3. The radar-based train proximity alarm device according to claim 1, characterized in that: The first alarm device (1) and the second alarm device (2) are also equipped with a solar power supply device (15) on the support frame (11). The solar power supply device (15) is electrically connected to the monitoring component (12), the sound and light alarm device (13) and the signal transmitting and receiving device (14).

4. The radar-sensing-based train proximity alarm device according to claim 1, characterized in that: The signal transmitting and receiving device (14) includes a wireless switch (141) and an antenna (142). A power distribution box (16) is provided on the support frame (11). The wireless switch (141) is located inside the power distribution box (16). The antenna (142) is vertically located on the top of the support frame (11). The antenna (142) is electrically connected to the wireless switch (141).

5. The radar-based train proximity alarm device according to claim 2, characterized in that: The radar sensing device (121) and the human infrared sensing device (122) are both installed inside the protective box (17).

6. The radar-based train proximity alarm device according to claim 4, characterized in that: The support frame (11) is equipped with a lightning rod (18) at the top, and the height of the lightning rod (18) is higher than the height of the antenna (142).

7. The radar-based train proximity alarm device according to claim 1, characterized in that: The first alarm device (1) and the second alarm device (2) are located 2-3 meters away from the track.

8. The radar-based train proximity alarm device according to claim 2, characterized in that: The radar sensing device (121) has a monitoring angle range of 76° left and right and 20° up and down.

9. The radar-based train proximity alarm device according to claim 2, characterized in that: The human infrared sensing device (122) has a monitoring angle range of 120° left and right and 60° up and down.

10. The radar-sensing-based train proximity alarm device according to claim 2, characterized in that: The maximum monitoring distance of the human infrared sensing device (122) is not less than 10M.

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