Impact-resistant passive protection net

Abstract

The present invention relates to the field of safety monitoring technology, and specifically discloses an impact-resistant passive protective net, including a protective net body, a server, a processing module, an alarm module, and a tension sensor arranged on the protective net body; the server is used to divide the protective net body into a plurality of protective areas along the route, and the tension sensors on the protective net body in the same protective area form a group, and a group of tension sensors corresponds to a processing module and an alarm module; the processing module is used to receive the monitoring signal returned by the same group of tension sensors, process the monitoring signal to obtain tension data, and return the tension data to the server, and the server is also used to determine whether the protective net is damaged according to the tension data, and if damaged, generate a first alarm instruction, and the processing module is also used to control the alarm module in the same group to perform a light alarm according to the first alarm instruction. The technical solution of the present invention can be used to warn vehicles or pedestrians traveling on a rockfall section, thereby reducing the probability of accidents.

Description

Technical Field

[0001] The invention relates to the technical field of safety monitoring, and in particular to an anti-impact passive protection net. Background Art

[0002] In mountainous areas, geological disasters on slopes such as rock collapse, mud and rock flow, landslide, slide, collapse and weathering and peeling often occur, especially along linear projects such as railways and highways. The disasters are characterized by many points, wide areas and long lines. With limited resources (manpower, material and financial resources), protection and control are very difficult or even impossible to prevent.

[0003] In the traditional surface protection system, mortar-laid stone and anchor spray slope protection will cause the vegetation on the slope to be destroyed, and will separate from the slope over time, causing local collapse, peeling and other structural life problems. Therefore, among the current slope protection measures, the flexible passive protection net has been rapidly developed and popularized with its inherent advantages of simple construction, convenient maintenance, advanced technology, safety and reliability, environmental protection and economy, and standardized design and selection, and is used in many slope protection projects.

[0004] The passive protection net is composed of four main parts: wire rope net or ring net (an additional wire grid is required when small pieces of falling rocks need to be intercepted), fixing system (anchor rod, anchor rope, base and support rope), decompression ring and steel column. The steel column and wire rope net are connected and combined to form a whole, forming a surface protection for the protected area, thereby preventing the collapse of rock and soil from falling and playing a role in slope protection.

[0005] Existing monitoring methods usually involve installing sensors on the passive protection net, and determining whether rockfall has occurred by detecting the tension on the passive protection net. If rockfall has occurred, relevant staff will be notified in a timely manner to handle it. However, it is impossible to warn vehicles or pedestrians on the road section where rockfall has occurred in the first place, and there are still certain safety hazards. Summary of the invention

[0006] The present invention provides an impact-resistant passive protection net, which can warn vehicles or pedestrians traveling on a road section with falling rocks, thereby reducing the probability of accidents.

[0007] In order to solve the above technical problems, this application provides the following technical solutions:

[0008] The impact-resistant passive protection net comprises a protection net body, a server, a processing module, an alarm module and a tension sensor arranged on the protection net body;

[0009] The server is used to divide the protection net body into several protection areas along the route. The tension sensors on the protection net body in the same protection area are grouped together. One group of tension sensors corresponds to one processing module and one alarm module, and the area division information is sent to the processing module.

[0010] The processing module is used to receive the monitoring signal sent back by the tension sensor of the same group, process the monitoring signal to obtain tension data, and send the tension data back to the server. The server is also used to analyze the tension data and determine whether the protective net is damaged based on the tension data. If damaged, a first alarm instruction is generated and sent to the processing module of the adjacent group. The processing module is also used to control the alarm module of the same group to issue a light alarm according to the first alarm instruction.

[0011] The basic scheme principles and beneficial effects are as follows:

[0012] In this solution, by setting up a tension sensor, the status of the protective net body can be monitored in real time. When rocks fall onto the protective net body, the monitoring signal will change. The processing module processes the monitoring information to obtain the current tension data, and then transmits it back to the server for further analysis. When the analysis finds that the protective net is damaged, the alarm module of the adjacent group will sound a light alarm, thereby achieving the goal of reminding pedestrians or vehicles in advance so that they have sufficient time to observe and avoid, thereby reducing the probability of accidents.

[0013] By dividing the protection area, the number of processing modules can be reduced, and the power consumption can be reduced. At the same time, by using multiple groups of processing modules, the overall protection system can continue to work even if a single processing module is damaged.

[0014] Furthermore, the server is also used to generate a second alarm instruction and send it to a processing module that is separated from the damaged protective net by a group. The processing module is also used to control the alarm module in the same group to sound an alarm according to the second alarm instruction.

[0015] First, a sound alarm is used to attract the attention of pedestrians and vehicles, and then a light alarm is used to warn them. The intensity of the warning is increased from far to near, and the early warning effect is better.

[0016] Furthermore, the protective net body includes a protective net, a steel column, a support rope connecting the protective net and the steel column, and a decompression ring arranged on the support rope;

[0017] The number of the decompression rings on a single support rope is at least 2, and the decompression rings are arranged in series.

[0018] The use of series-connected impact rings as energy dissipation devices can maintain flexibility while resisting impact over a large area, thereby improving the working performance of the passive protection net body.

[0019] Furthermore, the processing module is also used to identify the protective net from which the tension data comes, and to determine whether the number of protective nets corresponding to the tension sensors whose tension data exceeds the first threshold exceeds a warning value; if so, the alarm module in the same group is controlled to sound and light an alarm.

[0020] Whether the number of protective nets corresponding to the tension sensors whose tension data exceeds the first threshold exceeds the warning value, it indicates that a large area of ​​rockfall has occurred. This may be caused by loose mountain or earthquake. The data is processed locally and an alarm is issued immediately. Compared with uploading to the server for processing, the response speed is faster and it can also play a role in the event of communication interruption.

[0021] Furthermore, the processing module is also used to determine whether the tension data exceeds a second threshold. If it exceeds the second threshold, the alarm module in the same group is controlled to sound and light alarm, wherein the second threshold is greater than the first threshold.

[0022] For example, when a single rockfall is too large, an alarm can be sounded immediately.

[0023] Furthermore, when the server divides the protection area, the number of protection net bodies in the same protection area is determined according to the locations of the protection net bodies.

[0024] For example, the maximum distance that a vehicle can observe on a straight road and a curve is different. Therefore, the number of protection nets in the same protection area on a curve is less than that on a straight road, so that the number of protection areas on the curve is greater and the length of a single protection area is shorter. In case of falling rocks ahead, it helps vehicles to get an early warning before entering the curve.

[0025] Furthermore, the processing module is further configured to enter a power saving mode when the tension data is less than a third threshold value and the duration is greater than a first preset time. The processing module is further configured to stop returning the tension data in the power saving mode and send a heartbeat packet to the server every second preset time;

[0026] The processing module is further configured to exit the power saving mode after the tension data is greater than a third threshold.

[0027] Helps to improve the battery life of the processing module.

[0028] Furthermore, the processing module is also used to obtain the current signal of the alarm module, and determine whether the alarm module is working normally according to the current signal. If it is not working normally, an alarm failure message is sent to the server;

[0029] The server is also used to determine whether the sound and light alarm module of the adjacent group is in a working state after receiving the alarm failure information, and if not in a working state, send a first alarm instruction to the processing module of the adjacent group.

[0030] Avoid the situation where a single alarm module fails and is unable to transmit warning information to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1This is a logic block diagram of the impact-resistant passive protection net system of Example 1. DETAILED DESCRIPTION

[0032] The following is further described in detail through specific implementation methods:

[0033] Embodiment 1

[0034] like Figure 1 As shown, the impact-resistant passive protective net of this embodiment includes a protective net body, a server, a processing module, an alarm module, and a tension sensor arranged on the protective net body.

[0035] The protective net body includes a protective net, a steel column, a support rope connecting the protective net and the steel column, and a decompression ring arranged on the support rope; the protective net adopts a wire rope net or a ring net. The number of decompression rings on a single support rope is at least 2, and the decompression rings are arranged in series. The tension sensor is installed on the support rope. The tension sensor can be installed on each support rope, or some of the support ropes can be selected to install the tension sensor according to actual conditions.

[0036] The server is used to divide the protective net body into several protection areas along the route. The tension sensors on the protective net body in the same protection area are grouped together. A group of tension sensors corresponds to a processing module and an alarm module, and the area division information is sent to the processing module. In this implementation, when the server divides the protection area, the number of protective net bodies in the same protection area is determined according to the location of the protective net body.

[0037] Taking the protective net bodies set up along the highway as an example, the protection area is divided along the direction of the highway. The number of protective net bodies in the same area on a straight road is greater than the number of protective nets in the same area on a curve.

[0038] The processing module is used to receive the monitoring signal sent back by the tension sensor of the same group, process the monitoring signal to obtain tension data, and send the tension data back to the server. The server is also used to analyze the tension data, and judge whether the protective net is damaged according to the tension data. If damaged, the first alarm instruction, the second alarm instruction and the third alarm instruction are generated; the first alarm instruction is sent to the processing module of the adjacent group, and the processing module is also used to control the alarm module of the same group to make a light alarm according to the first alarm instruction. The second alarm instruction is sent to the processing module of the group separated from the damaged protective net, and the processing module is also used to control the alarm module of the same group to make a sound alarm according to the second alarm instruction; the third alarm instruction is sent to the processing module of the same group as the damaged protective net, and the processing module is also used to control the alarm module of the same group to make a sound and light alarm according to the third alarm instruction.

[0039] In this embodiment, when analyzing the tension data, firstly, the tension data from the same protective net body is identified according to the pre-stored installation position information of the tension sensor, the supporting rope corresponding to the tension data is determined, and the tension data is judged to be greater than or equal to the maximum force value according to the calibrated maximum force value of the supporting rope, and if it is greater than or equal to the maximum force value, it is judged whether the protective net is damaged. In other embodiments, a comprehensive analysis can also be performed in combination with the force conditions of multiple supporting ropes.

[0040] For example, on a straight section of a highway with a slope on one side, five protection areas are divided into A, B, C, D, and E. In each protection area, 10 protection nets are set along the direction of the highway. If the No. 4 protection net in area C is damaged, an audible and visual alarm will be issued in area C, a light alarm will be issued in areas B and D, and a sound alarm will be issued in areas A and E. By gradually increasing the intensity of the alarm, pedestrians or vehicles passing by will be reminded to pay attention to safety.

[0041] The processing module is also used to identify the protective net from which the tension data comes, and to determine whether the number of protective nets corresponding to the tension sensors whose tension data exceeds the first threshold exceeds the warning value. If the warning value is exceeded, the alarm module in the same group is controlled to sound and light alarm. The first threshold can be calibrated according to actual conditions, such as the change in tension of the support rope caused by a rockfall with a diameter exceeding 30 cm impacting the protective net.

[0042] The processing module is also used to determine whether the tension data exceeds a second threshold value, and if so, to control the alarm module in the same group to give an audible and visual alarm, wherein the second threshold value is greater than the first threshold value. The second threshold value can be selected from the maximum force values ​​of the calibrated support ropes.

[0043] The processing module is also used to enter the power saving mode after the tension data is less than the third threshold value and the duration is greater than the first preset time. The processing module is also used to stop returning the tension data in the power saving mode and send a heartbeat packet to the server every second preset time; the processing module is also used to exit the power saving mode after the tension data is greater than the third threshold value. The first preset time is 10-30 minutes, which is 10 minutes in this embodiment, and the second preset time is 6-24 hours, which is 12 hours in this embodiment. The third threshold value is the initial tension value of the support rope when there is no rockfall on the protective net. Since the initial tension values ​​of the support ropes at different positions are different, in this embodiment, it is necessary to first determine the initial tension value of the support rope corresponding to the tension data before making a judgment.

[0044] The processing module is also used to obtain the current signal of the alarm module, and judge whether the alarm module is working normally according to the current signal. If it is not working normally, the alarm failure information is sent to the server; the server is also used to judge whether the sound and light alarm module of the adjacent group is in working state after receiving the alarm failure information, and if it is not in working state, the first alarm instruction is sent to the processing module of the adjacent group. The working state means that the sound and light alarm module is performing sound and light alarm, voice alarm or light alarm.

[0045] Embodiment 2

[0046] The difference between this embodiment and the first embodiment is that, in this embodiment, after the server determines that the protective net is damaged, it is also used to obtain the passing vehicle information of the preset traffic information station and estimate the current position of the vehicle based on the passing vehicle information.

[0047] In the present embodiment, traffic information stations are set up at the entrance and exit of a designated road section. For example, gantries are set up at the entrance and exit of a section prone to rockfall, and cameras are installed to collect information about passing vehicles, i.e., images. The server identifies the type of vehicle based on the image, matches the average speed of vehicles of the same type from a preset database, and estimates the current position of the vehicle based on the time the vehicle passes through the traffic information station, the current time, and the average speed. In the present embodiment, the average speed of vehicles of the same type is obtained based on the big data of the time when the vehicle passes through two traffic information stations on a daily basis. If there are multiple vehicles, the present embodiment uses the vehicle whose estimated position is closest to the location where the protective net is damaged for subsequent analysis.

[0048] The server is also used to determine whether the distance between the estimated position and the damaged position of the protective net is greater than a set distance. If it is greater than the set distance, an early warning instruction is sent to a processing module of the protection area corresponding to the set distance to the position of the protective net; if it is less than or equal to the set distance, an early warning instruction is sent to a processing module of the protection area corresponding to the estimated position to the position of the protective net; wherein, the processing module of the protection area receiving the first alarm instruction, the second alarm instruction, and the third alarm instruction is not included. In this embodiment, the set distance is 2 kilometers. In other embodiments, it can also be comprehensively determined based on the degree of damage caused by historical rockfalls, the frequency of earthquakes, and the accuracy of the estimated position.

[0049] The processing module is also used to control the alarm module in the same group to perform light alarm according to the early warning instruction. In this embodiment, the color of the light is different depending on the distance from the damaged position of the protective net. It is convenient for the driver to judge the distance between the current position and the location of the incident. Among them, the alarm module corresponding to the first alarm instruction performs light alarm through red light. At the traffic information station or road section, the colors corresponding to different distances can be marked on the bulletin board, which is convenient for the driver to know in advance.

[0050] Through the solution of this embodiment, it is possible to provide early warning to the driver, so that the driver can make decisions in advance.

[0051] Embodiment 3

[0052] The difference between this embodiment and the second embodiment is that in this embodiment, the server is also used to determine whether the vehicle has a historical passage record based on the vehicle information. If there is a historical passage record, 50% of the set distance is used as the new set distance. In this embodiment, for drivers who are familiar with the road conditions, shortening the reminder distance has little impact on safety, but can reduce power consumption.

[0053] The above are only embodiments of the present invention. The invention is not limited to the fields involved in this implementation case. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field to which the invention belongs before the application date or the priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. An impact-resistant passive protective net, comprising a protective net body, characterized in that: It also includes a server, a processing module, an alarm module and a tension sensor arranged on the protective net body; The server is used to divide the protection net body into several protection areas along the route. The tension sensors on the protection net body in the same protection area are grouped together. One group of tension sensors corresponds to one processing module and one alarm module, and the area division information is sent to the processing module. The processing module is used to receive the monitoring signal sent back by the tension sensor of the same group, process the monitoring signal to obtain tension data, and send the tension data back to the server. The server is also used to analyze the tension data and determine whether the protective net is damaged according to the tension data. If damaged, a first alarm instruction is generated and sent to the processing module of the adjacent group. The processing module is also used to control the alarm module of the same group to send a light alarm according to the first alarm instruction. The server is also used to generate a second alarm instruction and send it to a processing module in a group separated from the damaged protective net. The processing module is also used to control the alarm module in the same group to sound an alarm according to the second alarm instruction; The protective net body comprises a protective net, a steel column, a supporting rope connecting the protective net and the steel column, and a decompression ring arranged on the supporting rope; The number of decompression rings on a single support rope is at least 2, and the decompression rings are arranged in series; The processing module is also used to identify the protective net from which the tension data comes, and to determine whether the number of protective nets corresponding to the tension sensors whose tension data exceeds a first threshold exceeds a warning value. If the number exceeds the warning value, the alarm module in the same group is controlled to sound and light an alarm.

2. The impact-resistant passive protection net according to claim 1, characterized in that: The processing module is also used to determine whether the tension data exceeds a second threshold value. If it exceeds the second threshold value, the alarm module in the same group is controlled to make an audible and visual alarm, wherein the second threshold value is greater than the first threshold value.

3. The impact-resistant passive protection net according to claim 2, characterized in that: When the server divides the protection area, the number of protection net bodies in the same protection area is determined according to the locations of the protection net bodies.

4. The impact-resistant passive protection net according to claim 3, characterized in that: The processing module is further used to enter a power saving mode when the tension data is less than a third threshold value and the duration is greater than a first preset time. The processing module is also used to stop returning the tension data in the power saving mode and send a heartbeat packet to the server every second preset time; The processing module is further configured to exit the power saving mode after the tension data is greater than a third threshold.

5. The impact-resistant passive protection net according to claim 4, characterized in that: The processing module is also used to obtain the current signal of the alarm module, and determine whether the alarm module is working normally according to the current signal. If it is not working normally, an alarm failure message is sent to the server; The server is also used to determine whether the sound and light alarm module of the adjacent group is in a working state after receiving the alarm failure information, and if not in a working state, send a first alarm instruction to the processing module of the adjacent group.

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