Laser-self-luminous identification cooperative level crossing intelligent warning device

Abstract

The invention discloses a laser-self-luminous identification cooperative intelligent warning device for a level crossing. The laser-self-luminous identification cooperative intelligent warning device comprises a laser transmitting module, a self-luminous identification module, an inductive control module and a power supply and main control module. The laser emission module is arranged on an intersection stand column and is divided into a linear laser lamp and a point-shaped energy charging lamp. When detecting pedestrians or vehicles, the linear laser lamp stroboscopes along the pedestrian crosswalk to form a dynamic warning marking line; and the point-shaped energy charging lamp charges energy for the self-luminous identification module. The self-luminous identification module is made of a long afterglow material and embedded in a traffic lane and a non-motorized vehicle lane, and the layout range of the self-luminous identification module coincides with laser projection. The sensing control module senses pedestrians through the radar and the illuminance sensor and controls the laser to start and stop. According to the invention, vehicles are dynamically warned through laser, and pedestrians are guided by the long-afterglow material, so that double warning of people and vehicles is realized; the energy storage efficiency is improved through efficient laser excitation, and energy saving is remarkable; the device is convenient to install and wide in adaptability, ensures safety by controlling the irradiation duration, and can be widely applied to rural roads and urban intersections.

Description

Technical Field

[0001] This invention relates to the field of traffic safety facilities technology, specifically to a laser-self-illuminating signage collaborative intelligent warning device for level crossings that combines dynamic laser warning with long afterglow continuous illumination guidance and can be adapted to pedestrian crossings. Background Technology

[0002] Road intersections are high-risk areas for traffic accidents, especially at night when visibility is poor, the accident rate increases significantly. Current methods primarily improve traffic safety at intersections by installing traffic lights, but this approach suffers from high investment costs and low traffic efficiency, making it unsuitable for meeting the needs of my country's more than 4 million kilometers of rural roads for economical and efficient traffic safety improvement solutions.

[0003] During driving, road markings are the primary visual focus for drivers. If crosswalk markings at intersections could be designed to intelligently detect interference from vehicles and pedestrians, and dynamically flash when such interference is present, providing warnings and guidance from the first-person perspective of both drivers and pedestrians, intersection safety could be significantly improved. However, existing technologies have the following drawbacks: First, reflective markings rely on vehicle headlights for illumination, resulting in a "vehicle-visible, pedestrian-unvisible" problem—drivers can see the markings, but pedestrians have difficulty perceiving them in the dark; furthermore, the reflectivity decreases significantly in rainy, foggy weather or after the road surface has dried, further reducing visibility. Second, while standalone laser warning devices can create dynamic warning markings, the long-term effects of laser light on the human eye make them unsuitable for providing continuous road guidance. Third, while standalone self-illuminating markers (such as those made of long-afterglow energy-storing materials) can emit light continuously at night, they suffer from low energy storage efficiency and insufficient brightness, failing to provide dynamic warnings to oncoming vehicles.

[0004] In summary, existing technologies such as reflective markings, laser warning devices, and self-illuminating signs cannot simultaneously meet the dual requirements of dynamic vehicle warning and continuous pedestrian guidance. In particular, there is a lack of technical solutions that effectively coordinate dynamic laser warning with long-afterglow continuous illumination. Therefore, there is an urgent need for a collaborative warning marking device to solve the above-mentioned pain points. Summary of the Invention

[0005] The purpose of this invention is to provide a laser-self-illuminating sign collaborative intelligent warning device for level crossings, in order to solve the problems in the prior art where laser warning and self-illuminating guidance cannot be coordinated, the energy storage efficiency of self-illuminating signs is low, and it is difficult to meet the dual needs of vehicle warning and pedestrian guidance at the same time. It realizes a collaborative warning function of dynamic laser warning for vehicles and long-afterglow energy-storing signs continuously guiding pedestrians, thereby improving the safety of traffic at intersections. At the same time, it utilizes the high-efficiency excitation characteristics of lasers to ensure that the long-afterglow energy-storing signs continue to emit high brightness light.

[0006] The technical problem of this invention is solved by the following technical solution: A laser-self-illuminating sign collaborative intelligent warning device for level crossings includes a laser emitting module, a self-illuminating sign module, a sensing control module, and a power supply and main control module. The device is installed at the road intersection. The laser emitting module is mounted on a column or bracket outside the non-motorized vehicle lane at the intersection and includes a laser generator, a control unit, and a projection angle adjustment component. The laser line emitted by the laser generator onto the road surface matches the direction of the pedestrian crossing at the intersection. The laser emitting module consists of a linear laser light and a dot-shaped charging light, which work together. The linear laser light projects a straight line onto the ground; when there are pedestrians or vehicles on the crossroads, the line... The laser light flashes along the length of the pedestrian crossing 3; the dot-shaped charging lights are arranged in vertical rows to charge multiple self-illuminating sign modules; the self-illuminating sign modules are made of long-afterglow energy-storing luminescent materials and are embedded in the driving lane and non-motorized vehicle lane near the intersection end of the pedestrian crossing, with their deployment range completely overlapping the laser projection range of the laser emitting module; the sensing control module includes a sensor integrating a radar sensing unit and an illuminance sensor, and a controller electrically connected to the sensor. The sensor is deployed on the side of the road, and the controller is used to control the start and stop of the laser emitting module; the power supply and main control module provides power to each module and realizes the overall operation control of the device.

[0007] The laser projection port of the laser emitting module is ≤100cm above the ground, and the direction of the laser beam projection port should be set to avoid the viewing area of ​​drivers and pedestrians; the continuous single irradiation time of the laser emitting module does not exceed 3 seconds.

[0008] The laser emitting module supports DC12V-AC220V power supply. The projection angle of the laser emitting module can be adjusted according to the different placement positions of the self-illuminating sign modules. The maximum adjustment range is less than 90° vertically downward and less than 90° horizontally to the left or right. The output power of the linear laser lamp can be adjusted between 2W and 4W. The dot-shaped charging lamp uses an ultraviolet + blue light emitter with a wavelength of 240nm to 500nm to charge the self-illuminating sign modules. The output power of a single dot-shaped charging lamp is no more than 9W. The number of dot-shaped charging lamps corresponds one-to-one with the number of self-illuminating sign modules.

[0009] The self-illuminating sign module is a raised pavement marker that is adapted to the road surface layout requirements.

[0010] The radar sensing unit uses a 24GHz band radar with an adjustable sensing distance of 0-200 meters. It can identify the direction of movement of moving objects and measure their speed, with a speed measurement range of 0.5-10 m / s, suitable for pedestrians and non-motorized vehicles. The illuminance threshold of the light sensor can be freely set, with the default threshold being <360 lux when the device enters the working state.

[0011] When the radar sensing unit detects a pedestrian entering the area of ​​crosswalk 3, the controller controls the laser emitting module to activate for a single time for a duration of T = S / V + 3 seconds, where S is the preset road width, i.e., the total width of the lanes that the pedestrian needs to cross to cross the street, V is the pedestrian speed measured by the radar sensing unit V > 0, in m / s, and 3 seconds is a safety redundancy; the controller controls the laser generator to turn on and off via a relay switch.

[0012] The power supply and main control module adopts one or a combination of DC12V mains power supply, AC220V mains power supply, and solar power + battery power supply; the sensor is installed on the column.

[0013] The controller communicates with the sensor and the sensor communicates with the radar sensing unit via RS485. Multiple sets of the devices communicate via a LoRa low-power local area network. After networking, each set of devices has a unique code. During communication, the device that detects a pedestrian / vehicle enters the sending mode first, while the other devices are in the receiving mode, realizing multi-device collaborative warning.

[0014] The device supports setting parameters such as illuminance threshold, laser flicker frequency, and laser activation redundancy duration via LoRa remote communication or RJ45 wired communication.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Dual warning, suitable for both vehicles and pedestrians: The intermittent flashing high-brightness laser markings provide a strong visual warning to oncoming vehicles, effectively indicating the location of the intersection and reminding drivers to slow down and give way; the long afterglow material in the self-illuminating marking module can still maintain high brightness after the laser is turned off, providing clear and continuous pedestrian marking guidance and direction for cyclists, non-motorized vehicle users and pedestrians crossing the intersection, completely solving the problems of traditional reflective markings being "visible to vehicles but not to pedestrians" and drivers being unable to clearly identify the markings in rainy, foggy, or wet road conditions, thus meeting the dual needs of vehicle warning and pedestrian guidance.

[0016] 2. High efficiency, energy saving and durability: Lasers have the characteristics of strong monochromaticity and good directionality, which improves the excitation efficiency of long-afterglow materials by more than 30 times compared with traditional LED excitation. The energy storage time is shortened from minutes to seconds. The laser emission module only starts when the cross-traffic interference conditions are met, resulting in significant energy saving. When powered by DC12V or AC220V mains power, the daily energy consumption is ≤0.8kWh, which is 60% to 70% lower than the energy consumption of traditional 24-hour continuous LED warning devices. When powered by solar energy and batteries, it can be completely independent of mains power, making it suitable for rural road scenarios without mains power supply.

[0017] 3. Easy installation and wide adaptability: The self-illuminating sign module adopts an embedded installation method, which is convenient to install and easy to maintain later; the laser emission module can be deployed using existing intersection posts or brackets without the need for additional installation carriers, reducing installation costs; the device can flexibly adjust the laser projection mode, laser output power and long afterglow emission duration of the self-illuminating sign according to the intersection width and traffic flow, adapting to various application scenarios such as intersections of different specifications, rural roads, and urban branch roads.

[0018] 4. Safe, reliable, and highly controllable: By optimizing the installation height and projection direction of the laser emission module and controlling the duration of continuous laser irradiation, damage to the human eye can be effectively avoided; the integrated illuminance sensor can automatically switch the working state according to the ambient brightness without manual intervention; it supports multi-device networking communication and remote parameter setting, which facilitates later management and maintenance, and the device operating parameters can be flexibly adjusted according to actual usage needs, improving the practicality and controllability of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the planar layout of the present invention.

[0020] Figure 2 for Figure 1 Section II.

[0021] Figure 3 This is a schematic block diagram of the various functional modules of the present invention. Detailed Implementation

[0022] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0023] like Figures 1-3 As shown, 1. Driving lane, 2. Non-motorized vehicle lane, 3. Pedestrian crossing, 4. Self-illuminating sign module, 5. Post, 6. Laser generator, 7. Battery panel, 8. Sensor. The same number in each figure represents the same component.

[0024] A laser-self-illuminating sign collaborative intelligent warning device for level crossings includes a laser emitting module, a self-illuminating sign module, a sensing and control module, and a power supply and main control module. The device is deployed at the road intersection to dynamically warn passing vehicles and continuously guide pedestrians crossing the road, ensuring traffic safety at the intersection. This embodiment is an example. Figure 1 The pedestrian crossing area shown is 3, which can be installed at intersections of rural roads to meet the economic needs of rural roads.

[0025] like Figure 1 , Figure 2 As shown, the laser emitting module is installed on the column 5 outside the non-motorized vehicle lane 2 at the intersection, or on a bracket. The installation height of its laser projection port needs to be controlled at a position that is not visible to the human eye, generally ≤100cm from the ground. The vertical and horizontal angles are adjustable. For example, the installation height is 25cm from the ground, so that the laser beam projection direction is towards the pedestrian crossing 3 and avoids the gaze area of ​​drivers and pedestrians to prevent laser damage to people's eyes.

[0026] The laser emitting module is as follows Figure 3 As shown, it mainly includes a laser generator 6, a control unit, and a projection angle adjustment component.

[0027] The laser generator 6 emits a laser line onto the road surface that matches the direction of the pedestrian crossing 3 at the intersection. The laser emission module consists of two parts: a linear laser light and a dot-shaped charging light, which work together. The linear laser light projects a straight line onto the ground. The laser light on the ground uses multiple colors such as red, yellow, and blue as a supplement to the self-illuminating marking module 4. When there are pedestrians or vehicles on the pedestrian crossing 3, the linear laser light starts to flash along the length of the pedestrian crossing 3, forming a dynamic warning laser marking line, which can remind passing vehicles to pay attention to safety. In this embodiment, it can flash at a frequency of 10 times / second along the length of the pedestrian crossing 3 to form a dynamic yellow or red warning laser marking line, improving the warning effect on oncoming vehicles.

[0028] The dot-shaped charging lamps use ultraviolet and blue light emitters with wavelengths of 240nm to 500nm. Multiple charging lamps are arranged vertically to charge multiple self-illuminating marking modules 4. The projection angle of the entire laser emitting module can be adjusted according to the different placement positions of the self-illuminating marking modules 4. The maximum adjustment range is a vertical downward angle of less than 90° and a horizontal left or right angle of less than 90°.

[0029] The laser emitting module supports DC12V-AC220V power supply. The output power of the linear laser lamp can be adjusted between 2W and 4W. The output power of a single point-shaped charging lamp is no more than 9W. The number of point-shaped charging lamps corresponds one-to-one with the number of self-illuminating marking modules 4. Each point-shaped charging lamp corresponds to one self-illuminating marking module 4. The start-up time is ≤500ms and the projection distance is ≥100m. The point-shaped charging lamps use ultraviolet + blue light emitters with wavelengths of 240nm to 500nm to charge the self-illuminating marking modules (4).

[0030] The self-illuminating sign module 4 is a common type of self-illuminating raised pavement sign embedded in the road surface, such as embedded in the driving lane 1 and non-motorized vehicle lane 2 of the pedestrian crossing 3 near the intersection, which is easy to install.

[0031] The self-illuminating sign module 4 is made of a long-afterglow energy-storing luminescent material, and its deployment range completely overlaps with the laser projection range of the laser generator 6. This allows for simultaneous energy storage during laser beam irradiation, and the module maintains high brightness after the laser is turned off, providing continuous guidance for pedestrians. The self-illuminating sign module 4 conforms to the relevant requirements of the ordinary self-illuminating raised pavement sign in the recommended industry standard "Highway Energy-Storing Self-Illuminating Traffic Signs" (JT / T 967—2025) approved and issued by the Ministry of Transport of China on December 31, 2025, and is adapted according to road surface deployment needs. Preferably, its optimal or suitable excitation wavelength matches the wavelength range of the dot-shaped energy-charging lamp.

[0032] The sensing control module includes a sensor 8 and a controller. The sensor 8 is installed on the side of the road, for example, on a pillar 5, and is electrically connected to the controller. The controller is used to control the start and stop of the laser emitting module.

[0033] The sensor 8 integrates a radar sensing unit and a light intensity sensor. The radar sensing unit uses a 24GHz band radar with an adjustable sensing distance of 0-200 meters. It can identify the direction of movement of objects and measure their speed to calculate the time required for pedestrians to cross the road. The speed measurement range is 0.5-10 m / s, adapting to the speeds of pedestrians and non-motorized vehicles. In this embodiment, the sensing distance of the radar sensing unit is adjusted to 100 meters, enabling it to identify the direction of movement of pedestrians and measure their speed. The light intensity sensor is used to detect ambient brightness to adapt to different usage periods. Its light intensity threshold can be freely set; the default threshold is <360 lux, at which point the device enters the working state.

[0034] The controller and sensor communicate via RS485, and the sensor and radar sensing unit also communicate via RS485. Multiple devices can be interconnected via LoRa low-power local area network, adapting to multi-intersection deployment scenarios such as intersections. This embodiment, for example... Figure 1The diagram shows a crossroads where four sets of this device are deployed, corresponding to four pedestrian crossings 3. These four sets of devices communicate via a LoRa low-power local area network. After networking, each set of devices is uniquely coded and authenticated. During communication, only one set of devices at a time enters the transmitting mode first when a pedestrian or vehicle is detected, while the other three sets are in the receiving mode to avoid mutual communication interference and achieve multi-device collaborative warning.

[0035] The working logic of the sensing control module is as follows: When the radar sensing unit detects a pedestrian entering the crosswalk 3, it transmits a signal to the controller, which then controls the linear laser light of the laser emitting module to emit a laser beam, forming a dynamic flashing warning laser marking. At the same time, the laser beam of the dot-shaped charging light excites the ground self-illuminating marking module 4 to store energy and emit light. When the laser beam emitted by the linear laser light emits light, the PWM wave can be adjusted to control the strobe of the laser beam. The strobe frequency is adjustable, with a default of 1 second on and 1 second off. After the pedestrian successfully crosses the road, the controller controls the laser emitting module to turn off. The controller also controls the single activation duration of the laser emitting module to be T = S / V + 3 seconds, where S is the preset road width, i.e., the total width of the lane 1 that the pedestrian needs to cross to cross the street, V is the pedestrian speed measured by the radar sensing unit V > 0, in m / s, and 3 seconds is a safety redundancy to ensure that the pedestrian crosses safely and avoids collisions with vehicles crossing the road. It should be noted that when a pedestrian's speed V is detected to be close to 0 (such as when the pedestrian is standing on the side of the road or on a safety island), in order to avoid the formula calculation from failing, the controller will start a preset maximum activation time T_max (e.g., 30 seconds), or adopt continuous detection logic. As long as the radar sensing unit continuously detects that the pedestrian is in the pedestrian crossing area 3, the laser emission module will continue to work according to the preset strobe mode until the pedestrian leaves the detection area or the speed returns to normal calculation.

[0036] Furthermore, to avoid visual discomfort to pedestrians or drivers, this invention implements dual control over the irradiation duration of the laser emission module. For example, the continuous single irradiation duration of no more than 3 seconds refers to the duration of a single pulse from the laser generator 6 in strobe mode (e.g., the default "on for 1 second" meets this requirement). The total operating time T = S / V + 3 seconds refers to the entire working cycle of the laser from its first activation to its final deactivation. Within this cycle, the laser operates in a pulse sequence that satisfies the requirement of "continuous single irradiation duration not exceeding 3 seconds." For example, when T = 8 seconds, the laser can cycle 4 times in a "on for 1 second, off for 1 second" pattern, generating a total of 4 single irradiations, each lasting 1 second, all meeting safety requirements.

[0037] The power supply and main control module adopts one or a combination of DC12V mains power supply, AC220V mains power supply, and solar power + battery power supply. When the solar power + battery power supply method is adopted, the solar panel 7 is installed on the top of the column 5 to collect solar energy and charge the battery. The battery provides a stable power supply to each module and realizes the overall operation control of the device. The controller and the sensor 8, and the sensor 8 and the radar sensing unit communicate with each other via RS485. The controller controls the laser generator 6 to turn on and off through a relay switch.

[0038] The device supports remote parameter setting and can set parameters such as illuminance threshold, laser flicker frequency, and laser on-redundancy duration via LoRa remote communication or RJ45 wired communication.

[0039] The device operates as follows: When the ambient brightness is less than 360 lux, the device enters the working state. When the radar sensing unit of sensor 8 detects a pedestrian about to cross the pedestrian crossing 3, it immediately transmits the signal to the controller. The controller calculates the pedestrian crossing time T = S / V + 3 seconds (assuming the road width S = 6 meters and the pedestrian speed V = 1.2 meters / second, then T = 6 / 1.2 + 3 = 8 seconds, meaning the laser emitting module will be continuously on for 8 seconds). Subsequently, it controls the laser generator 6 to start, emitting a dynamic strobe laser beam to form a warning laser marking that matches the pedestrian crossing 3. At the same time, the laser beam illuminates the self-illuminating sign module 4, causing it to store energy and emit light. After the pedestrian successfully crosses the pedestrian crossing 3, the controller controls the laser generator 6 to turn off, and the self-illuminating sign module 4 continues to emit light using the stored energy, providing guidance for subsequent pedestrians. During this process, the laser generator 6 operates in strobe mode, and the duration of each illuminated pulse (i.e., the duration of a single continuous irradiation) does not exceed 3 seconds to ensure eye safety.

[0040] The parts of this invention not described in detail are all prior art, and those skilled in the art can implement them based on existing technology or common knowledge, without further explanation.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A laser-self-illuminating sign-coordinated intelligent warning device for level crossings, characterized in that, It includes a laser emitting module, a self-illuminating marking module (4), a sensing control module, and a power supply and main control module; The device is installed at road intersections; The laser emitting module is installed on a column (5) or bracket outside the non-motorized vehicle lane (2) at the intersection. It includes a laser generator (6), a control unit and a projection angle adjustment component. The laser line emitted by the laser generator (6) onto the road surface is matched with the direction of the pedestrian crossing (3) at the intersection. The laser emitting module is divided into two parts: a linear laser light and a dot-shaped charging light, which work together. The linear laser light is a laser light that is projected onto the ground to project a straight line. When there are pedestrians or vehicles on the crossroads, the linear laser light starts to flash along the length of the crossroads (3). The dot-shaped charging light is composed of multiple lights arranged vertically to charge multiple self-illuminating marking modules (4). The self-luminous sign module (4) is made of long afterglow energy storage luminescent material and is embedded in the driving lane (1) and non-motorized vehicle lane (2) of the pedestrian crossing (3) near the intersection. Its deployment range completely overlaps with the laser projection range of the laser emitting module. The sensing control module includes a sensor (8) that integrates a radar sensing unit and a light intensity sensor, and a controller that is electrically connected to the sensor. The sensor is installed on the side of the road, and the controller is used to control the start and stop of the laser emission module. The power supply and main control module provides power to each module and realizes the overall operation control of the device.

2. The laser-self-illuminating signage collaborative intelligent warning device for level crossings according to claim 1, characterized in that, The laser projection port of the laser emitting module is ≤100cm above the ground, and the direction of the laser beam projection port should be set to avoid the viewing area of ​​drivers and pedestrians; the continuous single irradiation time of the laser emitting module does not exceed 3 seconds.

3. The laser-self-illuminating signage collaborative intelligent warning device for level crossings according to claim 1, characterized in that, The laser emitting module supports DC12V-AC220V power supply. The projection angle of the laser emitting module is adjusted according to the different self-illuminating marking modules (4) placement positions. The maximum adjustment range is a vertical downward angle of less than 90° and a horizontal angle of less than 90° to the left or right. The output power of the linear laser lamp is adjustable between 2W and 4W. The dot-shaped charging lamp uses an ultraviolet + blue light emitter with a wavelength of 240nm to 500nm to charge the self-illuminating marking module (4). The output power of a single dot-shaped charging lamp is no more than 9W. The number of dot-shaped charging lamps corresponds one-to-one with the number of self-illuminating marking modules (4). A single dot-shaped charging lamp corresponds to one self-illuminating marking module (4).

4. The laser-self-illuminating signage collaborative intelligent warning device for level crossings according to claim 1, characterized in that, The self-illuminating sign module (4) is a raised pavement marker, which is adapted according to the pavement layout requirements.

5. The laser-self-illuminating signage collaborative intelligent warning device for level crossings according to claim 1, characterized in that, The radar sensing unit uses a 24GHz band radar with an adjustable sensing distance of 0-200 meters. It can identify the direction of movement of moving objects and measure their speed, with a speed measurement range of 0.5-10 m / s, suitable for pedestrians and non-motorized vehicles. The illuminance threshold of the light sensor can be freely set, with the default threshold being <360 lux when the device enters the working state.

6. The laser-self-illuminating signage collaborative intelligent warning device for level crossings according to claim 1, characterized in that, When the radar sensing unit detects a pedestrian entering the area of ​​the crosswalk 3, the controller controls the laser emitting module to be turned on for a single time for T=S / V+3 seconds, where S is the preset road width, that is, the total width of the roadway that the pedestrian needs to cross to cross the street, V is the pedestrian speed V>0 measured by the radar sensing unit, the unit is m / s, and 3 seconds is a safety redundancy; the controller controls the laser generator (6) to turn on and off through a relay switch.

7. The laser-self-illuminating signage collaborative intelligent warning device for level crossings according to claim 1, characterized in that, The power supply and main control module adopts one or a combination of DC12V mains power supply, AC220V mains power supply, and solar power + battery power supply; the sensor (8) is installed on the column (5).

8. The laser-self-illuminating signage collaborative intelligent warning device for level crossings according to claim 1, characterized in that, The controller and sensor (8) communicate with each other and the sensor and radar sensing unit via RS485. Multiple sets of the devices communicate via LoRa low-power local area network. After networking, each set of devices has a unique code. During communication, the device that detects pedestrians or vehicles enters the sending mode first, while the other devices are in the receiving state, so as to realize multi-device collaborative warning.

9. A laser-self-illuminating sign-coordinated intelligent warning device for level crossings according to claim 6, characterized in that, The device supports setting parameters such as illuminance threshold, laser flicker frequency, and laser activation redundancy duration via LoRa remote communication or RJ45 wired communication.

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