Protective net device of vehicle windshield, control method and storage medium

Abstract

The embodiment of the invention provides a protective net device of a vehicle windshield, a control method and a storage medium. The storage structure is provided with a roller shaft along the upper edge of the windshield and connected with a protective net, the lead screw is arranged along the side edge of the windshield, and the driving structure drives the lead screw to rotate through a motor and achieves linear motion through a nut block connected with the protective net. The protective net extends downwards to cover the windshield when the control module receives the first instruction and retracts upwards and winds the outer side of the roller shaft when the control module receives the second instruction, and the problems that in the prior art, a windshield protective structure is inconvenient to unfold and fold, and response is not fast enough are solved.

Description

Technical Field

[0001] This application relates to the field of vehicle safety net technology, specifically to a vehicle windshield safety net device, control method, and storage medium. Background Technology

[0002] During firefighting and rescue operations, fire truck windshields may be impacted by flying debris, metal fragments, glass shards, falling objects, and debris carried by explosive shockwaves. This can cause the windshield to crack, shatter, or be partially penetrated, affecting the driver's visibility and vehicle handling safety. In severe cases, it may render the vehicle unable to continue its mission or even cause secondary accidents. Current technologies typically involve adding temporary protective panels or fixed mesh covers to the windshield. While these can improve impact resistance, they often suffer from long-term obstruction of vision and cumbersome installation and removal procedures. Summary of the Invention

[0003] The purpose of this application is to provide a protective net device, control method, and storage medium for a vehicle windshield.

[0004] To achieve the above objectives, the first aspect of this application provides a protective net device for a vehicle windshield, the protective net device comprising: The storage assembly includes a roller shaft positioned along the upper edge of the windshield; The protective netting is connected to the roller shaft; the movement of the protective netting drives the roller shaft to rotate. The drive assembly includes a lead screw disposed along the side of the windshield, a motor connected to the lead screw for driving the lead screw to rotate, and a nut block threaded to the lead screw and connected to the safety net. When the control module receives the first instruction, it controls the motor to rotate forward, causing the nut block to move downward along the lead screw, while simultaneously extending the protective net downward to cover the windshield. When the control module receives the second instruction, it controls the motor to rotate in reverse, causing the nut block to move upward along the lead screw, while simultaneously moving the protective net upward to wrap around the outside of the roller shaft.

[0005] In this embodiment of the application, the protective net device further includes guide components disposed on both sides of the windshield, the guide components including: Sliding rails are installed along the sides of the windshield; A limit block is installed at the end of the slide rail; The rollers are connected to the protective netting, and move along the slide rails when the netting moves.

[0006] In this embodiment, the protective net device further includes a photoelectric sensor disposed at the end of the slide rail, an impact detector disposed on the surface of the protective net, and a temperature detector disposed on the vehicle.

[0007] In this embodiment of the application, the storage assembly further includes fixing structures respectively disposed at the ends of the roller shaft, the fixing structures including: The bearing is located at the end of the roller shaft and is rotatably connected to the roller shaft with an interference fit. Bearing housing, the bearing is housed inside the bearing housing; Bearing housing bracket, installed on the vehicle and connected to the bearing housing.

[0008] In this embodiment, the motor is a servo motor, and the lead screw is connected to the motor rotor via a coupling.

[0009] The second aspect of this application provides a control method for a protective net device on a vehicle windshield, the control method comprising: Obtain the vehicle's operating instructions; When the working instruction is the first instruction, the control module controls the motor to rotate forward, the nut moves downward along the lead screw, and at the same time drives the protective net to extend downward to cover the windshield; When the working instruction is the second instruction, the control module controls the motor to reverse, the nut moves upward along the lead screw, and at the same time drives the protective net to move upward and wrap around the outside of the drum shaft.

[0010] In this embodiment of the application, the control method further includes: When the motor is rotating, the photoelectric sensor detects that the roller is in contact with the limit block, and the control module controls the motor to stop rotating.

[0011] In this embodiment of the application, the control method further includes: If the impact detector detects that the pressure value on the protective net exceeds the preset pressure value, the impact detector will issue a warning signal. Warning signals include one or more of the following: the vehicle's display screen showing the pressure value, the vehicle's warning lights flashing, and the vehicle's voice system broadcasting a message.

[0012] In this embodiment of the application, the control method further includes: When the temperature detector detects that the current temperature is higher than the first preset temperature, the vehicle's display screen shows the temperature detected by the temperature detector in real time. When the temperature detector detects that the current temperature is higher than the second preset temperature, the vehicle's display screen shows the temperature detected by the temperature detector in real time, the vehicle's warning lights flash, and the vehicle's voice device broadcasts a voice message. The second preset temperature is greater than the first preset temperature.

[0013] In this embodiment of the application, the control method further includes: The operating signal group of the protective net device is acquired at preset time intervals. If any signal in the operating signal group is lost, the vehicle's display screen will show the fault code corresponding to the lost signal. The signal parameter group includes at least one or more of the following: motor current, photoelectric sensor signal, impact detector signal, and temperature detector signal.

[0014] The third aspect of this application provides a fire truck, wherein the windshield of the fire truck is provided with a protective net device for the windshield.

[0015] A fourth aspect of this application provides a machine-readable storage medium storing instructions that, when executed by a processor, configure the processor to perform a method for controlling a protective mesh device for a vehicle windshield.

[0016] The above technical solution, which includes a storage structure with a roller shaft along the upper edge of the windshield and connected to the protective net, and a drive structure with a lead screw along the side of the windshield, driven by a motor to rotate the lead screw and moving linearly through a nut block connected to the protective net, allows the protective net to extend downward to cover the windshield when the control module receives the first command, and to retract upward and wrap around the outside of the roller shaft when the second command is received. This solves the problems of inconvenient deployment and storage of windshield protective structures and slow response in the prior art.

[0017] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings: Figure 1 This schematic diagram illustrates the structure of a protective net device for a vehicle windshield according to an embodiment of this application; Figure 2 A schematic side view of a protective net device for a vehicle windshield according to an embodiment of this application is shown. Figure 3 The schematic diagram illustrates a flow chart of a control method for a protective net device for a vehicle windshield according to an embodiment of this application; Figure 4 This schematically illustrates a process flow diagram of a control method for a protective net device for a vehicle windshield according to an embodiment of this application; Figure 5 This schematic diagram illustrates the internal structure of a computer device according to an embodiment of the present application; 1. Roller shaft; 2. Protective net; 3. Vehicle; 4. Fixed structure; 41. Bearing housing; 42. Bearing housing bracket; 51. Motor; 52. Lead screw; 53. Nut block; 54. Coupling; 6. Photoelectric sensor; 7. Impact detector; 8. Temperature detector. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] Figure 1 and Figure 2 A schematic diagram of a protective net device for a vehicle windshield according to an embodiment of this application is shown. Figure 1 and Figure 2 As shown, in one embodiment of this application, a protective net device for a vehicle windshield is provided, comprising: The storage assembly includes a roller shaft 1 disposed along the upper edge of the windshield; Protective net 2 is connected to roller shaft 1. When protective net 2 moves, it drives roller shaft 1 to rotate. The drive assembly includes a lead screw 52 disposed along the side of the windshield, a motor 51 connected to the lead screw 52 for driving the lead screw 52 to rotate, and a nut block 53 connected to the protective net 2; When the control module receives the first instruction, it controls the motor 51 to rotate forward, and the nut block 53 moves downward along the lead screw 52, ​​while simultaneously driving the protective net 2 to extend downward to cover the windshield; when the control module receives the second instruction, it controls the motor 51 to rotate in reverse, and the nut block 53 moves upward along the lead screw 52, ​​while simultaneously driving the protective net 2 to move upward and wrap around the outside of the roller shaft 1.

[0021] In one embodiment, the vehicle windshield protective net device is used to shield the windshield in complex rescue environments, reducing the impact and damage caused by flying debris to the glass surface and ensuring the structural safety of the driver's viewing area. The protective net device consists of a storage component, a protective net 2, a drive component, and a control module. The storage component is located at the upper edge of the windshield and includes a roller shaft 1. The roller shaft 1 serves as the winding component of the protective net 2, and the protective net 2 is connected to the roller shaft 1. When the protective net 2 moves, it applies a traction or rewinding force to the roller shaft 1, causing the roller shaft 1 to rotate, allowing the protective net 2 to switch between an unfolded and a retracted state. With the roller shaft 1 positioned at the upper edge of the windshield, the protective net 2 can cover the glass area from top to bottom when extended and converge upwards and wind around the outside of the roller shaft 1 when retracted. The drive component is arranged along the side of the windshield and provides driving force for the movement of the protective net 2. The drive component includes a lead screw 52, ​​a motor 51, and a nut block 53. Motor 51 is connected to lead screw 52 to drive its rotation. Nut block 53 is threadedly engaged with lead screw 52, ​​and moves axially along lead screw 52 when it rotates. Nut block 53 is connected to protective net 2, and its displacement causes protective net 2 to move synchronously up and down. Through the transmission structure of lead screw 52 and nut block 53, the rotational motion of motor 51 can be converted into the linear extension or retraction motion of protective net 2. Control module receives control commands and controls the direction of motor 51. When control module receives the first command, it controls motor 51 to rotate forward, leading to lead screw 52 rotating and nut block 53 moving downward along lead screw 52. As nut block 53 moves downward, it causes protective net 2 to extend downward, gradually covering the windshield surface. During the extension of protective net 2, the connection between protective net 2 and roller shaft 1 causes roller shaft 1 to rotate accordingly. When control module receives the second command, it controls motor 51 to rotate in reverse, leading to lead screw 52 rotating in the opposite direction and nut block 53 moving upward along lead screw 52. When the nut block 53 moves upward, it drives the protective net 2 to move upward. During the upward movement, the protective net 2 is wound around the outside of the roller shaft 1 and stored. The first and second commands can come from buttons inside the vehicle 3, remote control, vehicle bus control signals, or preset control strategy trigger signals, etc. Through the cooperation of the forward and reverse rotation of the motor 51 and the transmission of the lead screw 52, ​​the protective net 2 can be pulled down to cover the windshield when protection is needed, and rolled back to store when visibility or driving status needs to be restored. The storage position is fixed at the upper edge of the windshield, and the drive path is arranged in the side area of ​​the windshield, which is convenient for installation and integration and does not affect the normal driving visibility; at the same time, the orderly storage of the protective net 2 is achieved by the winding method of the roller shaft 1. Preferably, there are two sets of drive components, which are respectively set on the left and right sides of the windshield. In this embodiment, the protective net 2 is made of stainless steel and can be wound around the outside of the roller shaft 1. The material of the protective net 2 can also be other materials, as long as they are flexible enough to be wound.

[0022] In one embodiment, the windshield protective net device further includes a guide component for constraining the movement path of the protective net 2, ensuring that the protective net 2 maintains a predetermined trajectory conforming to the sides of the windshield during vertical movement, thus improving stability. The guide component is disposed on both sides of the windshield, with corresponding guide structures formed on the left and right sides respectively, thereby synchronously guiding the sides of the protective net 2. The guide component includes a slide rail, a limiting block, and rollers. The slide rail is disposed along the side of the windshield, forming a guide channel for the rollers to roll or slide. The rollers are connected to the protective net 2 and are installed as follow-up guide components in the side area of ​​the protective net 2. When the protective net 2 moves, the rollers move along the slide rail, ensuring smooth vertical movement of the protective net 2. The slide rail allows the protective net 2 to move linearly along the side of the windshield when extended or retracted. By providing slide rails on both sides of the windshield, the sides of the protective net 2 are confined to the corresponding side area of ​​the slide rail during movement, allowing the protective net 2 to maintain a flat posture covering the windshield and reducing deviation caused by wind pressure, vibration, or uneven force. A limiting block is located at the end of the slide rail, used to limit the travel of the roller. When the protective net 2 extends downward, the roller moves downward along the slide rail and is restricted by the limiting block at the lower end of the slide rail, thus limiting the maximum downward stroke of the protective net 2 and preventing over-extension that could damage the protective net 2 or cause abnormal reverse force on the roller shaft 1. When the protective net 2 retracts upward, the roller moves upward along the slide rail and is restricted by the limiting block near the upper end of the slide rail, thus limiting the upper position of the protective net 2 and preventing the roller from leaving the slide rail or the protective net 2 from over-winding. Through the guiding constraint of the slide rail on the roller and the travel limitation of the limiting block, the protective net 2 can maintain synchronous downward movement on both sides and maintain stable edge position when unfolding to cover the windshield, and can maintain synchronous upward movement on both sides and avoid skewing when retracting and winding.

[0023] In one embodiment, the protective net device for the vehicle windshield further includes a status sensing component for monitoring the positioning status of the protective net 2 and external operating conditions. The status sensing component includes a photoelectric sensor 6 disposed at the end of the slide rail, an impact detector 7 disposed on the surface of the protective net 2, and a temperature detector 8 disposed on the vehicle 3. The photoelectric sensor 6, disposed at the end of the slide rail, detects whether the roller has reached the end position of the slide rail, thereby determining the end point of the protective net 2's travel. When the protective net 2 extends downwards, the roller moves downwards along the slide rail. When the roller reaches near the lower end of the slide rail and blocks or triggers the detection channel of the photoelectric sensor 6, the photoelectric sensor 6 outputs a positioning signal to indicate that the protective net 2 has completed its downward coverage. When the protective net 2 retracts upwards, the roller moves upwards along the slide rail. When the roller reaches near the upper end of the slide rail and triggers the corresponding photoelectric sensor 6, the photoelectric sensor 6 outputs a positioning signal to indicate that the protective net 2 has completed its retraction and winding. By setting the photoelectric sensor 6 at the end of the slide rail, errors caused by relying solely on the running time of the motor 51 or estimating displacement can be avoided, reducing the risk of over-winding, over-pulling, or mechanical impact. Impact detector 7 is installed on the surface of the protective net 2 to detect impact events or changes in impact intensity that the protective net 2 experiences during use. When debris, falling objects, or flying objects act on the surface of the protective net 2, impact detector 7 generates a corresponding electrical signal output. This impact information can be used to assess the degree of danger of the environment in front of the windshield. Temperature detector 8 is installed on the surface of the protective net 2 or on the vehicle 3 to detect the ambient temperature or the temperature rise of the protective net 2 surface. When the vehicle 3 is in a high-temperature fire or high-temperature radiation environment, temperature detector 8 outputs a temperature signal, reflecting the heat load level of the protective net 2 under its operating conditions. Photoelectric sensor 6 provides position feedback at the endpoint of the protective net 2's travel, while impact detector 7 and temperature detector 8 provide feedback on external forces acting on the protective net 2 during its protection process. This information can be collected by the control module and used for driving motor 51 control, warning output, or protection strategy execution. By installing photoelectric sensor 6 at the end of the slide rail and impact detector 7 and temperature detector 8 on the surface of the protective net 2, the device can not only achieve reliable position control of the protective net 2 but also provide real-time sensing of impact and high-temperature conditions, improving its adaptability in complex fire-fighting scenarios.

[0024] In one embodiment, the storage assembly, in addition to the roller shaft 1, also includes fixing structures 4 disposed at both ends of the roller shaft 1 for supporting and positioning the roller shaft 1, enabling the roller shaft 1 to maintain stable rotation during the unfolding and retraction of the protective net 2. The fixing structures 4 are respectively disposed at the ends of the roller shaft 1, and the two ends of the roller shaft 1 are connected to the vehicle body 3 via the fixing structures 4. The fixing structure 4 includes a bearing, a bearing housing 41, and a bearing housing bracket 42. The bearing is disposed at the end of the roller shaft 1, and the bearing is rotatably connected to the roller shaft 1 with an interference fit. The bearing is disposed within the bearing housing 41, which positions the outer ring of the bearing and provides structural support. The bearing housing bracket 42 is disposed on the vehicle 3 and connected to the bearing housing 41, and the bearing housing bracket 42 is used to fix the bearing housing 41 to the vehicle structure, forming the mounting base for the storage assembly. The bearing housing bracket 42 can be arranged at the upper edge of the windshield, corresponding to the installation position of the roller shaft 1, and the connection between the bearing housing bracket 42 and the bearing housing 41 provides support for both ends of the roller shaft 1. By setting a bearing at the end of the roller shaft 1 and using an interference fit to achieve a rotating connection, and with the positioning and bearing of the bearing housing 41 and the fixed installation of the bearing housing bracket 42 on the vehicle structure, the storage assembly can maintain stable operation under vehicle 3 vibration, impact and frequent start-stop conditions.

[0025] In one embodiment, to improve driving accuracy and operational stability, the drive component of the vehicle windshield protective net device uses a servo motor 51. The servo motor 51 features controllable speed, fast start / stop response, and a wide output torque adjustment range, enabling smooth acceleration and deceleration of the protective net 2 during deployment and retraction, reducing vibration and impact, and improving the consistency of the protective net 2's coverage position. Through the closed-loop control capability of the servo motor 51, the control module can adjust the motor 51's speed and angle according to the operating status, making the displacement of the nut block 53 along the lead screw 52 more predictable, thereby improving the control accuracy of the protective net 2's extension length and retraction position.

[0026] In one embodiment, the lead screw 52 is connected to the rotor of the motor 51 via a coupling 54. The motor 51 is a servo motor 51, and the coupling 54 is used to transmit the rotational power of the servo motor 51 rotor to the lead screw 52, ​​so that the lead screw 52 rotates stably under the drive of the motor 51.

[0027] like Figure 3 As shown, in one embodiment, a method for controlling a protective net device for a vehicle windshield is provided, comprising the following steps: Step 302: Obtain the working instructions for vehicle 3; Step 304: When the working instruction is the first instruction, the control module controls the motor 51 to rotate forward, the nut moves downward along the lead screw 52, ​​and at the same time drives the protective net 2 to extend downward to cover the windshield; In step 306, when the working instruction is the second instruction, the control module controls the motor 51 to reverse, the nut moves upward along the lead screw 52, ​​and at the same time drives the protective net 2 to move upward and wrap around the outside of the roller shaft 1. In one embodiment, a control method for a vehicle windshield protective net device is used to control the deployment and retraction of the protective net 2, enabling the protective net 2 to form a protective barrier in front of the windshield according to the needs of the vehicle 3, or to restore the windshield's window state when protection is not required. The control method includes acquiring a working instruction from the vehicle 3. The working instruction characterizes the target state of the protective net 2 and can originate from in-vehicle control buttons, a remote control terminal, an output signal from the vehicle control system, or a preset strategy trigger signal. Upon receiving the working instruction, the control module identifies it to determine whether to execute the deployment or retraction action of the protective net 2. When the working instruction is the first instruction, the control module controls the motor 51 to rotate forward. When the motor 51 rotates forward, it drives the lead screw 52 to rotate, and the nut block 53 engages with the lead screw 52 threadedly, causing the nut block 53 to move downwards along the lead screw 52. During this downward movement, the nut block 53 maintains a connection with the protective net 2, thereby causing the protective net 2 to extend downwards and gradually cover the windshield. When the protective net 2 moves downwards, it connects to the roller shaft 1. The release of the protective net 2 causes the roller shaft 1 to rotate accordingly. The protective net 2 unfolds from the outside of the roller shaft 1, forming a covering layer and completing the shading of the windshield area. When the working command is the second command, the control module controls the motor 51 to reverse. When the motor 51 reverses, it drives the lead screw 52 to rotate in the opposite direction, and the nut block 53 moves upwards along the lead screw 52. During the upward movement of the nut block 53, it drives the protective net 2 upwards, gradually winding it around to the outside of the roller shaft 1, completing its retraction and storage. Through the cooperation of the reverse rotation of the motor 51 and the transmission of the lead screw 52, ​​the protective net 2 can switch from the covering state to the stored state, restoring the normal viewing window function in front of the windshield.

[0028] In one embodiment, the control method for the protective net 2 device, when performing the unfolding or retracting action of the protective net 2, uses a positioning detection and shutdown control logic to promptly stop the motor 51 when the protective net 2 reaches the end of its stroke, preventing jamming, impact, or over-winding or over-pulling caused by the continued movement of the nut block 53. While the motor 51 is rotating, the protective net 2, under the action of the drive assembly, drives the rollers to move along the slide rail. When the protective net 2 moves to the end of the slide rail, the rollers contact the limit block, and the photoelectric sensor 6 detects the contact between the rollers and the limit block and outputs a positioning signal. The positioning signal indicates that the protective net 2 has reached the end of its stroke, which is either the lower end where the protective net 2 completes its downward coverage or the upper end where the protective net 2 completes its retraction and winding. After receiving the positioning signal output by the photoelectric sensor 6, the control module controls the motor 51 to stop rotating. After the motor 51 stops, the lead screw 52 stops rotating, the nut block 53 stops moving along the axial direction of the lead screw 52, ​​and the protective net 2 stops further extending or retracting, stabilizing the protective net 2 in its current position. This shutdown control can reduce the impact load at the end of the slide rail and the risk of overload of the drive components, and prevent the nut block 53 from being continuously stressed at the end, causing wear of the thread pair of the lead screw 52 or overheating of the motor 51 due to blockage.

[0029] In one embodiment, the control method further includes issuing a warning signal by the impact detector 7 when the pressure value detected by the impact detector 7 on the protective net 2 exceeds a preset pressure value. The impact detector 7 is installed on the surface of the protective net 2 and is used to collect the pressure value or impact intensity parameter experienced by the protective net 2. The preset pressure value is used to distinguish between normal minor contact and dangerous impact events. When the pressure value exceeds the preset pressure value, it indicates that the protective net 2 may be subjected to a large debris impact, falling object impact, or external force compression, and the impact detector 7 outputs a warning signal to trigger an alarm. The warning signal includes one or more of the following: the pressure value is displayed on the vehicle 3's screen, the warning light on the vehicle 3 flashes, and the voice device on the vehicle 3 broadcasts a voice message. The pressure value displayed on the screen provides quantitative information, allowing operators to intuitively understand the degree of impact and determine whether the vehicle position or operation method needs to be adjusted; the flashing warning light provides a conspicuous visual prompt in high-noise or distracted scenarios, making it easy for people inside the vehicle to quickly notice the abnormal state; the voice device broadcasts a voice message to provide immediate voice reminders when personnel are not continuously paying attention to the screen or lights, enhancing the reachability and response efficiency of the alarm. The above alarm methods can be enabled individually or in combination to adapt to the prompting needs of different working environments.

[0030] In one embodiment, when temperature detector 8 detects that the current temperature is higher than a first preset temperature, the display screen of vehicle 3 displays the temperature detected by temperature detector 8 in real time. When temperature detector 8 detects that the current temperature is higher than a second preset temperature, the display screen of vehicle 3 displays the temperature detected by temperature detector 8 in real time, while the alarm light of vehicle 3 flashes and the voice device of vehicle 3 broadcasts a voice announcement. The second preset temperature represents a higher level of dangerous temperature threshold. When the temperature exceeds the second preset temperature, the system enters a high-temperature alarm state. While maintaining the real-time temperature display on the screen, the flashing alarm light and voice announcement are superimposed to provide a clear warning even in environments with strong noise, strong light, or distracted personnel, prompting the crew to take quick countermeasures, such as adjusting the vehicle's orientation, increasing distance, reducing dwell time, or switching work plans. The second preset temperature is higher than the first preset temperature. By setting two different thresholds to form a graded response mechanism, it avoids excessive alarms when the temperature rises slightly, and can also trigger stronger warning measures in a timely manner when the temperature reaches a dangerous level, enhancing the safety guarantee capability of the protective net 2 device in high-temperature environments at fire scenes.

[0031] In one embodiment, the control method for the protective net 2 device further includes operational status inspection and fault indication. This is used to periodically monitor the signal connectivity and operational status of key components during the deployment, retraction, or maintenance of the protective net 2 device. When signal interruption, abnormal data acquisition, or communication failure occurs, fault information can be promptly indicated to prevent the device from continuing to operate under abnormal conditions, causing jamming, malfunction, or loss of protective capability. The control method includes acquiring the operational signal group of the protective net 2 device at preset time intervals. The preset time interval is used to set the sampling and inspection cycle. The control module acquires and verifies the integrity of the operational signal group once according to this cycle, ensuring continuous updating of the signal status. The operational signal group is used to characterize the key operating parameters and key sensor outputs of the protective net 2 device. The control module uses the acquired signals as the basis for the current device status. If any signal in the operational signal group is lost, the display screen of vehicle 3 displays the fault code corresponding to the lost signal. Signal loss indicates that a signal has not been acquired, remains invalid, or is interrupted within a preset time period. The control module associates lost signals with pre-established fault codes. When a loss event is detected, the control module outputs the corresponding fault code and drives the display screen to show it, enabling operators to quickly locate the fault type and possible fault location, facilitating maintenance, reset, or switching of control strategies. The signal parameter group includes at least one or more of the following: motor 51 current, photoelectric sensor 6 signal, impact detector 7 signal, and temperature detector 8 signal. The motor 51 current is used to characterize changes in the drive load; when the motor 51 current signal is lost, a corresponding fault code is displayed to indicate a drive monitoring abnormality. The photoelectric sensor 6 signal is used to characterize the end-point detection status; when this signal is lost, a corresponding fault code is displayed to indicate an end-point detection function abnormality. The impact detector 7 signal is used to characterize the pressure or impact monitoring status; when this signal is lost, a corresponding fault code is displayed to indicate an impact alarm link abnormality. The temperature detector 8 signal is used to characterize the temperature monitoring status; when this signal is lost, a corresponding fault code is displayed to indicate a thermal risk monitoring link abnormality.

[0032] In one embodiment, by periodically acquiring operating signal groups and outputting corresponding fault codes when any signal is lost, the control method enables the protection net 2 device to continuously perform self-checks, ensuring that key drive parameters and key sensor signals remain traceable during the mission. In the event of a loose line, sensor failure, or communication anomaly, the system can promptly display fault codes on the screen, reducing the concealment of faults and improving on-site troubleshooting efficiency and device operational reliability.

[0033] The photoelectric sensing device is a photoelectric switch or a photoelectric limit sensor; the impact detection device is a piezoelectric impact sensor or an acceleration impact sensor; the temperature detection device is a thermocouple or other temperature sensor.

[0034] In one embodiment, a fire truck is provided, wherein the windshield of the fire truck is provided with a protective net device for the windshield.

[0035] like Figure 4 As shown, in one embodiment, the protective net control console system performs an initialization self-test after power-on. If the self-test passes, the protective net roll is placed in a standby state or a pre-unfolding locked state. If the self-test fails, an audible and visual alarm is triggered and a fault code is output. The process is then terminated, and the system restarts after manual troubleshooting. If the self-test passes, the system enters a command detection state. Command sources include unfolding, retraction, or emergency stop commands output by the driver from the control console panel, as well as unfolding, retraction, or emergency stop signals input from the control console control link. The protective net control console system determines the detected drive commands and issues corresponding control signals. When the drive command is unfolding, the main control console sends an unfolding signal to drive the dual-sided servo motors to rotate synchronously in the forward direction. The servo motors drive the ball screws to rotate via transmission, causing the nut block to move downwards and pull the protective net along the slide rail to unfold and cover the windshield. During the unfolding process, the limit device and photoelectric sensor continuously detect the position. When the roller reaches the end and contacts the limit block, the corresponding position is detected. In the unfolding state, the central control system controls the servo motor to brake and stop, and determines that the unfolding is complete, then enters the locked state. When the drive command is to retract or extend, the main control console sends a retract or extend signal to drive the servo motors on both sides to rotate synchronously in opposite directions. This causes the ball screw to move the nut block upward and pull the protective net along the slide rail to retract or extend back to the outside of the roller shaft. During the retracting or extending process, the limit device and photoelectric sensor perform position detection. When the roller is detected to have reached the end and the position state is triggered, the central control system controls the servo motor to stop and determines that the retraction or unfolding is complete. During the operation of the device, the sensor module unit periodically collects operating and environmental data and performs threshold judgment. When the detected data is greater than the threshold, an audible and visual alarm is triggered to alert and avoid risks. If an abnormal position detection, signal loss, or other fault triggering conditions occur during the motor rotation or the movement of the protective net, the central control system executes the protection strategy, outputs an audible and visual alarm and records the fault code, and stops the motor to terminate the current process. The system will be restarted after manual troubleshooting to resume operation.

[0036] This application provides a machine-readable storage medium storing instructions that, when executed by a processor, implement the aforementioned control method for the protective net 2 device.

[0037] Compared with the prior art, this application proposes a protective net device for vehicle windshields. Based on a storage structure with a roller shaft 1 set along the upper edge of the windshield and connected to a protective net 2, and a drive structure with a lead screw 52 set along the side of the windshield, driven by a motor 51 to rotate the lead screw 52 and achieving linear motion through a nut block 53 connected to the protective net 2, the protective net 2 extends downward to cover the windshield when the control module receives a first command, and retracts upward and wraps around the outside of the roller shaft 1 when the second command is received. This solves the problems of inconvenient unfolding and storage of windshield protective structures and insufficient response speed in the prior art.

[0038] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 5 As shown, the computer device includes a processor A01, a network interface A02, a display screen A04, an input device A05, and a memory (not shown) connected via a system bus. The processor A01 provides computing and control capabilities. The memory includes internal memory A03 and a non-volatile storage medium A06. The non-volatile storage medium A06 stores an operating system B01 and a computer program B02. The internal memory A03 provides an environment for the operation of the operating system B01 and the computer program B02 stored in the non-volatile storage medium A06. The network interface A02 is used for communication with external terminals via a network connection. When the computer program is executed by the processor A01, it implements a control method for a protective mesh device for a vehicle windshield. The display screen A04 can be a liquid crystal display (LCD) or an e-ink display. The input device A05 can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the computer device casing, or an external keyboard, touchpad, or mouse.

[0039] Those skilled in the art will understand that Figure 5 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0040] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0041] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0042] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0043] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0044] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0045] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0046] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0047] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0048] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A protective net device for a vehicle windshield, characterized in that, The protective netting device includes: The storage assembly includes a roller shaft disposed along the upper edge of the windshield; A protective net is connected to the roller shaft, and the movement of the protective net drives the roller shaft to rotate; The drive assembly includes a lead screw disposed along the side of the windshield, a motor connected to the lead screw for driving the lead screw to rotate, and a nut block threadedly engaged with the lead screw and connected to the protective net. When the control module receives a first instruction, it controls the motor to rotate forward, causing the nut block to move downward along the lead screw, while simultaneously driving the protective net to extend downward and cover the windshield; when the control module receives a second instruction, it controls the motor to rotate in reverse, causing the nut block to move upward along the lead screw, while simultaneously driving the protective net to move upward and wrap around the outside of the roller shaft.

2. The protective net device for a vehicle windshield according to claim 1, characterized in that, The protective net device further includes guide components disposed on both sides of the windshield, the guide components comprising: A sliding rail is provided along the side of the windshield; A limiting block is provided at the end of the slide rail; The roller is connected to the protective net, and moves along the slide rail when the protective net moves.

3. The protective net device for a vehicle windshield according to claim 2, characterized in that, The protective net device also includes a photoelectric sensor installed at the end of the slide rail, an impact detector installed on the surface of the protective net, and a temperature detector installed on the vehicle.

4. The protective net device for a vehicle windshield according to claim 1, characterized in that, The storage assembly also includes fixing structures respectively disposed at the ends of the roller shaft, the fixing structures including: A bearing is disposed at the end of the roller shaft and is rotatably connected to the roller shaft with an interference fit; A bearing housing, wherein the bearing is disposed within the bearing housing; A bearing housing bracket is mounted on the vehicle and connected to the bearing housing.

5. The protective net device for a vehicle windshield according to claim 1, characterized in that, The motor is a servo motor, and the lead screw is connected to the rotor of the motor via a coupling.

6. A control method for a protective net device on a vehicle windshield, characterized in that, The control method is used to control the protective netting device according to any one of claims 1-5, and the control method includes: Obtain the vehicle's operating instructions; When the working instruction is the first instruction, the control module controls the motor to rotate forward, the nut moves downward along the lead screw, and at the same time drives the protective net to extend downward to cover the windshield; When the working instruction is the second instruction, the control module controls the motor to reverse, the nut moves upward along the lead screw, and at the same time drives the protective net to move upward and wrap around the outside of the roller shaft.

7. The control method for the protective netting device according to claim 6, characterized in that, The control method further includes: When the motor is rotating, and the photoelectric sensor detects that the roller is in contact with the limit block, the control module controls the motor to stop rotating.

8. The control method for the protective netting device according to claim 6, characterized in that, The control method further includes: If the impact detector detects that the pressure value on the protective net is greater than the preset pressure value, the impact detector will issue a warning signal. The warning signals include one or more of the following: the vehicle's display screen showing the pressure value, the vehicle's warning lights flashing, and the vehicle's voice device broadcasting a message.

9. The control method for the protective netting device according to claim 6, characterized in that, The control method further includes: When the temperature detector detects that the current temperature is higher than the first preset temperature, the vehicle's display screen shows the temperature detected by the temperature detector in real time. When the temperature detector detects that the current temperature is higher than the second preset temperature, the vehicle's display screen shows the detected temperature in real time, the vehicle's warning light flashes, and the vehicle's voice device broadcasts a voice message. The second preset temperature is greater than the first preset temperature.

10. The control method for the protective netting device according to claim 6, characterized in that, The control method further includes: The operating signal group of the protective net device is acquired at preset time intervals. If any signal in the operating signal group is lost, the vehicle's display screen shows the fault code corresponding to the lost signal. The signal parameter group includes at least one or more of the following: the motor current, the photoelectric sensor signal, the impact detector signal, and the temperature detector signal.

11. A fire truck, characterized in that, The fire truck windshield is equipped with a protective netting device as described in any one of claims 1-5.

12. A machine-readable storage medium storing instructions thereon, characterized in that, When executed by a processor, the instruction causes the processor to be configured to perform a control method for a protective mesh device for a vehicle windshield according to any one of claims 6 to 10.

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