The invention involves a type of electronic net which can detect whether the net body is damaged, in particular a type of electronic net used to ensure the transportation security.
It is necessary to proceed X-ray inspection for cargo transportation at the airport, especially for air exported cargo to meet the security requirement. Generally most of the national airports set a freight center with the X-ray inspection equipment for security inspection to all the goods to be transported by air. After security inspection, the cargo will be directly transported to cargo plane for transportation. The airports with large freight volume setups a corresponding scale freight center in order to temporarily store the goods. However, in some countries or regions, such as Hong Kong, the limited area of the airport cannot meet the needs of large volume of air cargo. Therefore, it is necessary to inspect the cargo security outside the airport, and then transport the goods to airport for air freight by truck after security inspection. In order to avoid the security loopholes in the process of transportation after security inspection, it is necessary to take specific security measures, including using rope net to fix the goods, and using lock with special disposable label to fix the rope net in order to prevent any goods from being replaced or inserted without security check during transportation. After transportation, the staff should inspect the packing to find out whether the rope net and the lock have any damage. However, the above security inspections are very cumbersome and inefficient in the actual operation process. And due to the omissions of manual inspection, It is unable to effectively eliminate security loopholes in the transportation.
In the view of the above shortage of the existing technologies, the invention provides a electronic net for security during transportation In coordination of the electronic lock and electronic net, which can rapidly inspect any damage of the electronic net during transportation and simplify the airport inspection of transportation security to improve the work efficiency, reduce the omissions by manual inspection, and effectively eliminate the security loopholes in the transportation.
In addition, the invention also provides a weaving method of the electronic net which uses braided wire with conductive wire knit the electronic net.
An electronic net for security during transportation, whereas includes a net body which is woven by a braided wire; a conductive wire is buried along the braided wire; both metal ends of the conductive wire are connected to an electronic lock respectively, the net body wholly covers the transported goods; a fixing belt goes through the meshes at the edge of the net body in turn, and fixes to a bottom plate for placing goods; an anti-disassembly strap is set along the fixing belt at specified space intervals, the strap goes through the bottom plate, fixing belt and/or the meshes at the edge of the net body, the strap is provided with a unique identifier, the security settings applied to the electronic net before transportation are as following:
The following inspection items are carried out to verify the electronic security net after transportation:
If the above inspection items are passes, the security of transport process of the goods is confirmed, otherwise, it is believed that there is security problem during transportation and the goods is accepted.
Furthermore, the braided wire at least includes an insulating braided outer layer and the conductive wire; and the outer layer is elastic to wrap the conductive wire inside.
Furthermore, the net body of electronic net is formed by connecting multiple subnets, the meshes at the edge of the adjacent subnets are cross woven and connected to each other, the conductive wires between subnets are connected in series, and the connection position is fixed by a sleeve; the end of the conductive wire of the first subnet and the end of the conductive wire of the last subnet are connected to the electronic lock.
Furthermore, the edge of the adjacent subnet is fixed by inserting and knotting with a braided wire along the meshes, and the conductive wire of the braided wire is also inserted to the conductive wire of the subnet.
Furthermore, the electronic lock is at least provided with a detection circuit for checking if the connection end is conductive, with the connection between the detection circuit and the electronic net, the conductive wire of the electronic net forms a loop, and when the electronic lock activates, the detection circuit outputs electrical signal to detect the loop, and sends out the corresponding error signal if the interruption occurs.
Furthermore, the electronic lock is provided with a satellite positioning circuit and a communication circuit, the communication circuit connects to satellite positioning circuit to obtain the positioning data, and it also connects to detection circuit to obtain fault signal, the communication circuit transmits the positioning data and error signal to the remote server by wireless network.
A weaving method of the electronic net for security during transportation, whereas the net body of the electronic net is of interlaced by the meshes and the knots between adjacent meshes, the weaving methods are as below:
The invention has the following advantageous effects: the net body of electronic net is knitted with a braided wire which has a conductive wire inside, or even it is formed by multiple subnets and the conductive wires between subnets are connected in series. Both ends of conductive wire of the net body are connected to electronic lock. If the conductive wire in the braided wire is disconnected due to the damage of net body, the electronic lock rapidly detect the error. Even though the disconnected conductive wire is reconnected again, the error record in the electronic lock and backend server cannot be eliminated. Therefore, once the goods finish the X-ray security check, it is covered with the electronic net and locked to the bottom plate with fixing belt, and then identify it with the strap before transportation. And the staff needs to check the electronic lock if there is any error signal and observe the identifiers of the straps if they are consistent with the record and damaged or not As above to complete the inspection of the security problems in transportation. The process is simple and reduces the security loopholes caused by negligence.
Below are explanations of the invention combining with drawings:
In the figures: 1. Net body, 2. Electronic lock, 3. Fixing belt, 4. Strap.
Refer to
In order to prevent the short circuit and tempering of the conductive wire in the braided wire and lead to the security loopholes, the braided wire is composed of an insulation braided outer layer and inner conductive wire. The insulating braided outer layer is generally braided outside the conductive wire with a stronger braided wire. On the one hand, it can act as insulation. And on the other hand, it can improve the tensile performance of the braided wire, and prevent the conductive wire from being torn open easily in use. As the braided wire needs to be knitted to form the net body 1, and be distorted during weaving, the outer layer of insulating braided is elastic to meet the needs. Also, there are certain requirements for the performance of the conductive wire, such as the tensile property and electrical conductivity. For the electrical conductivity, the total electrical resistivity of the braided electronic net should be less than 30 KΩ, and 10-15 KΩ is preferred. Because the higher resistivity will affect the signal transmissions of the ports of electronic lock 2 and would cause the electronic net not working properly.
Electronic lock 2 is provided with a detection circuit for detecting the connection of both metal ends. The detection circuit form a loop with the conductive wire of the electronic net when the electronic lock 2 activate, the detection circuit will output the electrical signal to the electronic net and detect whether the loop is interrupted or the conductive wire is broken. Once the interruption occurs, the error signal will be sent out. In the meanwhile, refer to
In order to fix the electronic net to the bottom plate for placing goods, the fixing belt 3 is necessary. The fixing belt 3 goes through the meshes at the edge of the net body 1 and fix to the bottom plate. Generally, a connecting buckle for fixing the fixing belt 3 to the bottom plate is necessary. The fixing belt 3 goes through the connecting buckle and fixes to the bottom plate. In order to prevent the security loopholes caused by the destruction or replacement of the fixing belt 3, an anti-disassemble strap should be set along the fixing belt 3 at specified space intervals. The strap 4 goes through the bottom plate, fixing belt 3 and/or the meshes at the edge of net body 1, so as to prevent the fixing belt 3 from being removed or replaced. At the same time, each strap 4 has a unique identifier to prevent being replaced.
When the goods are transported to the airport after the X-ray security inspection, the following steps are necessary to ensure security:
When the goods arrive at the airport and complete the transportation, the staff carry out the following inspection to verify the electronic security net.
If passing the above inspection, the security of the goods transportation is confirmed, otherwise, the goods will not be accepted for any security problems existing in the transportation. The process is simple and reduces the security loopholes caused by negligence.
Further, if there are lots of goods and a signal electronic net cannot fully cover all the goods, the net body 1 of electronic net is formed by connecting multiple subnets, the meshes at the edge of the adjacent subnets are cross woven and connected to each other, the conductive wires between subnets are connected in series, and the connection position is fix by a sleeve; the end of the conductive wire of the first subnet and the end of the conductive wire of the last subnet are connected to the electronic lock 2. In addition, in order to strengthen the connection between the subnets, the edge of the adjacent subnets is fastened by inserting and knotting with braided wire along the meshes. And the conductive wire of the braided wire is also inserted to the conductive wire of the subnet.
The net body 1 of the electronic net is formed by interlacing of the meshes and the knots between adjacent meshes. The weaving methods are shown below:
In order to prevent the goods from being stolen through the big meshes of the electronic net, the mesh size is generally about 4 CM. The knot of electronic net is also relatively loose to make the whole electronic net have better elasticity that can be adjusted according to the contact position with the goods.
Number | Date | Country | Kind |
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19126827.5 | Jul 2019 | HK | national |
Filing Document | Filing Date | Country | Kind |
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PCT/IB2020/056537 | 7/13/2020 | WO | 00 |