Anti-shielding Early Warning Method Based on a Positioning Device

Abstract

The present invention provides an anti-shielding early warning method based on a positioning device. The positioning device includes a communication module, a positioning module, an interference signal detection module, and a control module. The communication module, the positioning module, and the interference signal detection module are all electrically connected to the control module. The anti-shielding early warning method includes: the control module controls the interference signal detection module to continuously work, and uses the interference signal detection module to detect the intensity value of the interference signal around the positioning device; when the interference signal detection module detects that the intensity value of the interference signal reaches a first preset value, the control module sends a first-level shielding early warning message to the cloud platform through the communication module, and the cloud platform sends the first-level shielding early warning message to the user's mobile terminal.

Description

Technical Field

[0001] The present invention relates to the technical field of positioning, and particularly to an anti-shielding warning method based on a positioning device. Background Art

[0002] A positioning device is a device that uses satellite positioning and uploads the obtained positioning data to a server through a mobile communication module (GSM / GPRS network). The positioning device is generally installed on vehicles, goods, etc. The positioning device is generally provided with a positioning module and a communication module. The positioning module is used to obtain the position information of the positioning device, and then the communication module transmits the position information obtained by the positioning module to the cloud server. The user uses his mobile terminal device (such as a mobile phone) to interact with the cloud server to obtain the position information of the positioning device, thereby obtaining the position information of the vehicle, goods, etc., and ensuring the safety of the vehicle and goods.

[0003] However, in the actual use process, since the signals of the positioning module and the communication module in the positioning device are affected by external interference signals, some lawless elements use signal jammers to interfere with the normal operation of the positioning device, making it impossible for users to track the position information of vehicles, goods, etc. through the positioning device, and the positioning device cannot send an alarm message to the user in time when it is interfered by the signal jammer, so as to achieve the purpose of stealing vehicles, goods, etc. Summary of the Invention

[0004] The purpose of the present invention is to provide an anti-shielding warning method based on a positioning device, which can give a warning when the positioning device is interfered by the signal of a signal jammer, thereby avoiding the loss of vehicles, goods, etc. and ensuring property safety.

[0005] The present invention provides an anti-shielding warning method based on a positioning device. The positioning device includes a communication module, a positioning module, an interference signal detection module, and a control module. The communication module, the positioning module, and the interference signal detection module are all electrically connected to the control module;

[0006] The anti-shielding warning method includes:

[0007] The control module controls the interference signal detection module to work continuously, and uses the interference signal detection module to detect the intensity value of the interference signal around the positioning device;

[0008] When the interference signal detection module detects that the intensity value of the interference signal reaches a first preset value, the control module sends a first-level shielding warning message to the cloud platform through the communication module, and the cloud platform sends the first-level shielding warning message to the user's mobile terminal.

[0009] In one possible implementation, the anti-blocking warning method further includes:

[0010] When the interference signal detection module detects that the intensity value of the interference signal reaches a second preset value, the control module sends a secondary blocking warning message to the cloud platform through the communication module, and the cloud platform sends the secondary blocking warning message to the user's mobile terminal; wherein, the second preset value is greater than the first preset value.

[0011] In one possible implementation, both the first preset value and the second preset value are less than a threshold value; the threshold value is the intensity value of the interference signal when the communication module and the cloud platform cannot perform remote communication.

[0012] In one possible implementation, the method for determining the threshold value includes:

[0013] (1) Place the signal jammer around the positioning device so that the distance between the signal jammer and the positioning device is within a preset range;

[0014] (2) Control the positioning device to continuously send calibration information to the cloud platform through the communication module;

[0015] (3) Adjust the operating frequency of the signal jammer to f1, then turn on the signal jammer, and obtain the intensity value of the interference signal emitted by the signal jammer detected by the interference signal detection module in real time;

[0016] (4) Obtain the time node when the cloud platform cannot receive the calibration information;

[0017] (5) According to the time node, obtain the intensity value of the interference signal emitted by the signal jammer detected by the interference signal detection module corresponding to the time node, denoted as RSSI1;

[0018] (6) Turn off the signal jammer;

[0019] (7) Adjust the operating frequency of the signal jammer to f2, f3,... f n , and then repeat the above steps (3) to (6) respectively, and then obtain the intensity values RSSI2, RSSI3,... RSSI of the interference signal emitted by the signal jammer detected by the interference signal detection module corresponding thereto respectively n , the threshold value = min(RSSI1, RSSI2, RSSI3,... RSSI n ).

[0020] In one achievable manner, the first preset value is 20% to 50% of the threshold, and the second preset value is 40% to 70% of the threshold.

[0021] In an achievable manner, the positioning device further includes an alarm module, and the alarm module is electrically connected to the control module;

[0022] The anti-shielding early warning method also includes:

[0023] When the interference signal detection module detects that the strength value of the interference signal reaches the second preset value, the control module controls the alarm module to send out an alarm signal.

[0024] In one achievable manner, the anti-shielding early warning method further includes:

[0025] When the communication module and the cloud platform cannot communicate remotely, the cloud platform records the duration of the inability of the communication module and the cloud platform to communicate remotely;

[0026] When the duration reaches a preset duration, the cloud platform sends a shielding confirmation message to the user's mobile terminal.

[0027] In one achievable manner, the anti-shielding early warning method further includes:

[0028] When the interference signal detection module detects that the strength value of the interference signal reaches the first preset value, the control module controls the communication module and the positioning module to continue working;

[0029] When the interference signal detection module detects that the strength value of the interference signal is less than the first preset value, the control module controls the communication module and the positioning module to work intermittently.

[0030] In one achievable manner, the anti-shielding early warning method further includes:

[0031] When the interference signal detection module detects that the strength value of the interference signal is reduced to less than the first preset value, the control module sends the shielding warning release information to the cloud platform through the communication module, and the cloud platform sends the shielding warning release information to the user's mobile terminal.

[0032] In one achievable manner, the positioning device is used to be installed on a vehicle, and the control module is electrically connected to a vehicle controller of the vehicle;

[0033] The anti-shielding early warning method also includes:

[0034] When the communication module cannot communicate remotely with the cloud platform, the control module sends a shielding alarm signal to the vehicle controller; the vehicle controller controls the door locks of the vehicle to lock and controls the anti-theft alarm of the vehicle based on the shielding alarm signal.

[0035] The anti-shielding early warning method based on a positioning device provided by the present invention sets an interference signal detection module in the positioning device, and uses the interference signal detection module to detect the intensity value of the interference signal around the positioning device; when the interference signal detection module detects that the intensity value of the interference signal reaches a first preset value, the control module immediately sends a first-level shielding early warning message to the cloud platform through the communication module, and the cloud platform sends the first-level shielding early warning message to the user's mobile terminal, so that the user can timely know that the positioning device is suffering from signal interference, realizing the signal interference early warning function, avoiding the loss of vehicles, goods, etc., and ensuring property safety. Brief Description of the Drawings

[0036] Figure 1 It is a schematic structural diagram of the positioning device in the embodiment of the present invention.

[0037] Figure 2 is Figure 1 the explosion structural diagram of.

[0038] Figure 3 It is a schematic diagram of the signal transmission relationship between the positioning device, the cloud platform and the mobile terminal in the embodiment of the present invention.

[0039] Figure 4 It is a schematic diagram of the connection relationship between the positioning device and the vehicle in the embodiment of the present invention.

[0040] Figure 5 It is a schematic diagram of the relationship between the intensity of the interference signal detected by the interference signal detection module and time when the signal jammer is working in the embodiment of the present invention. Detailed Embodiments

[0041] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0042] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention are used to distinguish similar objects and do not have to be used to describe a specific order or sequence.

[0043] The orientation terms such as up, down, left, right, front, back, top, bottom, etc. (if any) involved in the description and claims of the present invention are defined based on the positions of the structures in the drawings and their relative positions to each other, only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of orientation terms should not limit the scope of protection claimed by the present invention.

[0044] As Figures 1 to 5 shown, an anti-shielding early warning method based on a positioning device is provided in an embodiment of the present invention. The positioning device 1 includes a communication module 11, a positioning module 12, an interference signal detection module 13, and a control module 14. The communication module 11, the positioning module 12, and the interference signal detection module 13 are all electrically connected to the control module 14. Among them, the communication module 11 is used for wireless communication, the positioning module 12 is used for receiving positioning information, and the control module 14 is used to wirelessly transmit the positioning information received by the positioning module 12 to the cloud platform 2 (i.e., the cloud server) through the communication module 11. The user's mobile terminal 3 (such as a mobile phone, a computer, etc.) can interact with the cloud platform 2 to obtain the positioning information (the specific functions and working principles of the communication module 11 and the positioning module 12 can refer to the prior art and will not be elaborated here); the interference signal detection module 13 is used to detect the intensity value of the interference signal around the positioning device 1.

[0045] The anti-shielding early warning method includes:

[0046] The control module 14 controls the interference signal detection module 13 to work continuously (i.e., work without interruption), and uses the interference signal detection module 13 to detect the intensity value of the interference signal around the positioning device 1;

[0047] When the interference signal detection module 13 detects that the intensity value of the interference signal reaches (i.e., is greater than or equal to) the first preset value, the control module 14 immediately sends a first-level shielding early warning message to the cloud platform 2 through the communication module 11, and the cloud platform 2 sends the first-level shielding early warning message to the user's mobile terminal 3, so as to remind the user.

[0048] In the anti-shielding early warning method based on a positioning device provided in the embodiment of the present invention, by setting the interference signal detection module 13 in the positioning device 1, the interference signal detection module 13 is used to detect the intensity value of the interference signal around the positioning device 1; when the interference signal detection module 13 detects that the intensity value of the interference signal reaches the first preset value, the control module 14 immediately sends a first-level shielding early warning message to the cloud platform 2 through the communication module 11, and the cloud platform 2 sends the first-level shielding early warning message to the user's mobile terminal 3, so that the user can timely know that the positioning device 1 is suffering from signal interference, realizing the signal interference early warning function, avoiding the loss of vehicles, goods, etc., and ensuring property safety. The positioning device 1 can be set not only on vehicles, but also on goods, ships and other various application occasions.

[0049] As an implementation manner, the anti-shielding warning method further includes:

[0050] When the interference signal detection module 13 detects that the intensity value of the interference signal reaches (i.e., is greater than or equal to) the second preset value, the control module 14 immediately sends a secondary shielding warning message to the cloud platform 2 through the communication module 11, and the cloud platform 2 sends the secondary shielding warning message to the user's mobile terminal 3; wherein, the second preset value is greater than the first preset value.

[0051] Specifically, both the first preset value and the second preset value are less than the threshold value; the threshold value is the intensity value of the interference signal when the communication module 11 and the cloud platform 2 cannot perform remote communication (i.e., when the interference signal detection module 13 detects that the intensity value of the interference signal reaches this threshold value, the communication module 11 and the cloud platform 2 cannot perform remote communication, and the communication module 11 cannot send a shielding warning message to the cloud platform 2, that is, the positioning device 1 has been shielded at this time).

[0052] As Figure 5 shown, when the signal jammer is working, the intensity of the interference signal it emits will first increase and then tend to be stable (the intensity of the interference signal is related to the working power of the signal jammer. When the signal jammer is just turned on, its working power will gradually increase, so the intensity of the interference signal it emits will gradually increase; after working for a period of time (generally from a few seconds to dozens of seconds), its working power tends to be stable, so the intensity of the interference signal it emits also tends to be stable). Therefore, the intensity of the interference signal detected by the interference signal detection module 13 will also first increase and then tend to be stable. When the interference signal detection module 13 detects that the intensity value of the interference signal reaches the threshold value, the communication module 11 and the cloud platform 2 cannot perform remote communication, and the communication module 11 cannot send a shielding warning message to the cloud platform 2. Therefore, it is necessary to set the above first preset value and second preset value to be less than the threshold value so that the control module 14 can timely send a shielding warning message to the cloud platform 2 through the communication module 11.

[0053] Meanwhile, by setting the first-level warning and the second-level warning, the function of preventing false alarms can be achieved. Specifically, during the actual use of the positioning device 1, there will be many interference signals around it; when the intensity of the interference signal reaches the first preset value, it is impossible to accurately determine whether it is the interference signal emitted by the signal jammer (it may be the interference signal inadvertently emitted by other devices). The control module 14 can send information such as "suspected signal jammer interference detected" to the user's mobile terminal 3 through the communication module 11 and the cloud platform 2 to remind the user; when the intensity of the interference signal reaches the second preset value, since the intensity of the detected interference signal is relatively large at this time, and general devices cannot generate such strong interference signals, it can be judged that the positioning device 1 is probably being interfered by the signal jammer. At this time, the control module 14 can send information such as "signal jammer interference detected, please deal with it in time" to the user's mobile terminal 3 through the communication module 11 and the cloud platform 2 to remind the user. With such settings, it is possible to avoid the positioning device 1 from failing to send warning information in time (if only the second-level warning is set, due to the large intensity of the interference signal at this time, the positioning device 1 may not be able to successfully send the warning information to the cloud platform 2 under strong signal interference, resulting in warning failure), and it is also possible to avoid false alarms.

[0054] As an implementation manner, the first preset value is 20% - 50% of the threshold value, and the second preset value is 40% - 70% of the threshold value. For example, the first preset value is 30% of the threshold value, and the second preset value is 60% of the threshold value.

[0055] As an implementation manner, the method for determining the above threshold value includes:

[0056] (1) Place the signal jammer around the positioning device 1 so that the distance between the signal jammer and the positioning device 1 is within a preset range (for example, the distance between the signal jammer and the positioning device 1 is 1 meter);

[0057] (2) Control the positioning device 1 to continuously (i.e., without interruption) send calibration information to the cloud platform 2 through the communication module 11. This calibration information can be any information (such as several characters, etc.);

[0058] (3) Adjust the operating frequency of the signal jammer to f1, then turn on the signal jammer to make it emit interference signals, and obtain the intensity value of the interference signals emitted by the signal jammer detected by the interference signal detection module 13 in real time (specifically, the positioning device 1 can be externally connected to a computer or other devices, and the computer is used to read the intensity value of the interference signals detected by the interference signal detection module 13 in real time to obtain the relationship between the intensity value of the interference signals similar to Figure 5 shown and time);

[0059] (4) Obtain the time node when the cloud platform 2 cannot receive the calibration information (i.e., at this time node, the cloud platform 2 loses the communication connection with the communication module 11);

[0060] (5) According to the time node, obtain the intensity value of the interference signal emitted by the signal jammer detected by the interference signal detection module 13 corresponding to the time node (i.e., the limit intensity value), denoted as RSSI1; for example, if the cloud platform 2 starts to be unable to receive the calibration information 5 seconds after the signal jammer is turned on, then the time node is the 5th second, and the intensity value of the interference signal detected by the interference signal detection module 13 at the 5th second is the limit intensity value;

[0061] (6) Turn off the signal jammer;

[0062] (7) Adjust the operating frequency of the signal jammer to f2, f3,... f n , and then repeat the above steps (3) to (6) respectively, and then obtain the intensity values RSSI2, RSSI3,... RSSI of the interference signals emitted by the signal jammer detected by the interference signal detection module 13 corresponding thereto respectively n , the threshold = min(RSSI1, RSSI2, RSSI3,... RSSI n ).

[0063] Specifically, since the communication module 11 generally has multiple operating frequency bands (such as 2G frequency band, 3G frequency band, 4G frequency band, etc.), the signal jammer generally also configures multiple operating frequency bands to shield and interfere with each frequency band of the communication module 11, and the intensity change of the interference signal emitted by the signal jammer in each operating frequency band is not completely consistent, and the anti-interference ability of the communication module 11 to each frequency band is also inconsistent (that is, the threshold is different under different operating frequency bands). Therefore, in order to ensure that the communication module 11 can communicate with the cloud platform 2 in a timely and smooth manner when the signal jammer uses various operating frequency bands for interference, the limit intensity values of the interference signals corresponding to the communication module 11 being unable to communicate remotely with the cloud platform 2 when the signal jammer uses various operating frequency bands for interference are respectively tested, and then the minimum value among these limit intensity values is taken to obtain the threshold.

[0064] For example, adjust the operating frequency of the signal jammer to 869 - 894 MHz, 925 - 960 MHz, 1805 - 1880 MHz, 1900 - 1990 MHz, and 2100 - 2200 MHz respectively (the above frequency bands can basically cover all the operating frequency bands of the communication module 11), and obtain the corresponding limit intensity values as RSSI1, RSSI2, RSSI3, RSSI4, and RSSI5 respectively, and then take the minimum value of these five data as the threshold.

[0065] It should be noted that: The order of the above steps (2) and (3) cannot be reversed. If the adjustment signal blocker is turned on first and then the communication module 11 is controlled to send calibration information to the cloud platform 2, since there is a delay between the two operation steps, the signal blocker may have been working stably (or reached the threshold) before the communication module 11 sends the calibration information, resulting in measurement failure.

[0066] As Figure 3 shown, as an implementation manner, the positioning device 1 further includes an alarm module 17, and the alarm module 17 is electrically connected to the control module 14;

[0067] The anti-shielding early warning method further includes:

[0068] When the interference signal detection module 13 detects that the intensity value of the interference signal reaches a second preset value, the control module 14 controls the alarm module 17 to emit an alarm signal;

[0069] When the interference signal detection module 13 detects that the intensity value of the interference signal decreases to less than the second preset value, the control module 14 controls the alarm module 17 to cancel the alarm.

[0070] Specifically, the alarm module 17 can be a horn, an audible and visual alarm device, etc.; when the interference signal detection module 13 detects that the intensity value of the interference signal reaches the second preset value, the control module 14 controls the alarm module 17 to beep, flash, etc., so as to play a warning and deterrent role.

[0071] As an implementation manner, the anti-shielding early warning method further includes:

[0072] When the communication module 11 and the cloud platform 2 cannot perform remote communication, the cloud platform 2 records the continuous duration during which the communication module 11 and the cloud platform 2 cannot perform remote communication;

[0073] When the continuous duration reaches a preset duration, the cloud platform 2 sends a shielding confirmation message to the user's mobile terminal 3.

[0074] Specifically, after the control module 14 sends a secondary shielding early warning message to the cloud platform 2 through the communication module 11, the cloud platform 2 continuously performs remote communication with the communication module 11. When the communication module 11 and the cloud platform 2 cannot perform remote communication (for example, the cloud platform 2 continuously sends information to the communication module 11 but does not receive a reply from the communication module 11), and after the inability to communicate lasts for a period of time (for example, 1 minute), the cloud platform 2 determines that the positioning device 1 has been shielded, and then sends a shielding confirmation message to the user's mobile terminal 3 (for example, sending information such as "The positioning device has been shielded"), so as to remind the user.

[0075] As an implementation manner, the anti-shielding early warning method further includes:

[0076] When the interference signal detection module 13 detects that the intensity value of the interference signal is reduced to less than the first preset value, the control module 14 sends the shielding warning release information to the cloud platform 2 through the communication module 11, and the cloud platform 2 sends the shielding warning release information to the user's mobile terminal 3, thereby reminding the user to release the warning.

[0077] As an implementation mode, the anti-shielding early warning method further includes:

[0078] When the interference signal detection module 13 detects that the strength value of the interference signal reaches a first preset value, the control module 14 controls the communication module 11 and the positioning module 12 to continue working (before this, the communication module 11 and the positioning module 12 generally work intermittently), so that the communication module 11 can immediately send a first-level shielding warning message to the cloud platform 2, and when the positioning device 1 is shielded, since the communication module 11 and the positioning module 12 still continue to work, the positioning device 1 can immediately send a shielding warning release message to the cloud platform 2 and upload the location information of the positioning device 1 after the shielding is released;

[0079] When the interference signal detection module 13 detects that the strength value of the interference signal is less than the first preset value, it indicates that the warning is lifted. At this time, the control module 14 controls the communication module 11 and the positioning module 12 to work intermittently (for example, once every 10 minutes) to save power consumption.

[0080] like Figure 4 As shown, as an embodiment, the positioning device 1 is used to be installed on a vehicle 4 (such as a car), and the control module 14 is electrically connected to the vehicle controller 41 of the vehicle 4;

[0081] The anti-shielding early warning method also includes:

[0082] When the communication module 11 and the cloud platform 2 cannot communicate remotely, the control module 14 sends a shielding alarm signal to the vehicle controller 41 (it should be noted that the positioning device 1 is generally plugged into the interface in the vehicle 4, and the control module 14 and the vehicle controller 41 are electrically connected through a line, so the signal blocker cannot block the communication between the two); the vehicle controller 41 controls the door lock 42 of the vehicle 4 to lock and the anti-theft alarm 43 of the vehicle 4 to work (such as sound and light warning, locking the circuit / oil circuit, so that the vehicle cannot be started before the alarm is lifted) based on the shielding alarm signal, thereby improving the safety of the vehicle. Of course, the positioning device 1 can also be installed on other items or equipment.

[0083] like Figure 1 and Figure 2As shown, as an implementation manner, the positioning device 1 further includes a housing 15 and a circuit board 16. The circuit board 16 is disposed inside the housing 15. The communication module 11, the positioning module 12, the interference signal detection module 13, the control module 14, and the alarm module 17 are all disposed on the circuit board 16 and are all electrically connected to the circuit board 16. The communication module 11 is a 2G / 4G dual-band network communication module, that is, the communication module 11 can be compatible with the communication of 2G network and 4G network. The positioning module 12 is a GPS / BD dual-positioning module, that is, the positioning module 12 is compatible with GPS positioning and Beidou positioning. The positioning device 1 further includes a communication antenna 111, a positioning antenna 121, and an interference signal detection antenna (not shown in the figure). The communication antenna 111, the positioning antenna 121, and the interference signal detection antenna are all electrically connected to the circuit board 16 and all extend outside the housing 15. The communication antenna 111 is electrically connected to the communication module 11 through the circuit board 16. The positioning antenna 121 is electrically connected to the positioning module 12 through the circuit board 16. The interference signal detection antenna is electrically connected to the interference signal detection module 13 through the circuit board 16. The communication antenna 111 is used for sending and receiving communication information. The positioning antenna 121 is used for receiving positioning information. The interference signal detection antenna is used for receiving the interference signals around the positioning device 1 and transmitting the interference signals to the interference signal detection module 13.

[0084] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An anti-shielding early warning method based on a positioning device, characterized in that: The positioning device comprises a communication module, a positioning module, an interference signal detection module and a control module, wherein the communication module, the positioning module and the interference signal detection module are all electrically connected to the control module; The anti-shielding early warning method comprises: The control module controls the interference signal detection module to work continuously, and uses the interference signal detection module to detect the strength value of the interference signal around the positioning device; When the interference signal detection module detects that the strength value of the interference signal reaches a first preset value, the control module sends a first-level shielding warning message to the cloud platform through the communication module, and the cloud platform sends the first-level shielding warning message to the user's mobile terminal; When the interference signal detection module detects that the strength value of the interference signal reaches a second preset value, the control module sends a second-level shielding warning message to the cloud platform through the communication module, and the cloud platform sends the second-level shielding warning message to the user's mobile terminal; wherein the second preset value is greater than the first preset value, and both the first preset value and the second preset value are less than a threshold value; the threshold value is the strength value of the interference signal when the communication module and the cloud platform cannot communicate remotely; The method for determining the threshold value comprises the following steps: (1) Placing a signal blocker around the positioning device so that the distance between the signal blocker and the positioning device is within a preset range; (2) controlling the positioning device to continuously send calibration information to the cloud platform through the communication module; (3) adjusting the operating frequency of the signal blocker to f1, then turning on the signal blocker, and obtaining the intensity value of the interference signal emitted by the signal blocker detected in real time by the interference signal detection module; (4) Obtaining the time point at which the cloud platform cannot receive the calibration information; (5) according to the time node, obtaining the strength value of the interference signal emitted by the signal shielding device detected by the interference signal detection module corresponding to the time node, recorded as RSSI1; (6) Turning off the signal blocker; (7) Adjust the operating frequency of the signal blocker to f2, f3, ... f n Then, the above steps (3) to (6) are repeated respectively, and then the strength values ​​of the interference signals RSSI2, RSSI3, ...RSSI emitted by the signal shielding device detected by the corresponding interference signal detection module are obtained respectively. n , the threshold = min(RSSI1, RSSI2, RSSI3, ...RSSI n ).

2. The anti-shielding early warning method based on the positioning device according to claim 1, characterized in that: The first preset value is 20% to 50% of the threshold, and the second preset value is 40% to 70% of the threshold.

3. The anti-shielding early warning method based on the positioning device according to claim 1, characterized in that: The positioning device further comprises an alarm module, and the alarm module is electrically connected to the control module; The anti-shielding early warning method also includes: When the interference signal detection module detects that the strength value of the interference signal reaches the second preset value, the control module controls the alarm module to send out an alarm signal.

4. The anti-shielding early warning method based on the positioning device according to claim 1, characterized in that: The anti-shielding early warning method also includes: When the communication module and the cloud platform cannot communicate remotely, the cloud platform records the duration of the inability of the communication module and the cloud platform to communicate remotely; When the duration reaches a preset duration, the cloud platform sends a shielding confirmation message to the user's mobile terminal.

5. The anti-shielding early warning method based on the positioning device according to claim 1, characterized in that: The anti-shielding early warning method also includes: When the interference signal detection module detects that the strength value of the interference signal reaches the first preset value, the control module controls the communication module and the positioning module to continue working; When the interference signal detection module detects that the strength value of the interference signal is less than the first preset value, the control module controls the communication module and the positioning module to work intermittently.

6. The anti-shielding early warning method based on the positioning device according to claim 1, characterized in that: The anti-shielding early warning method also includes: When the interference signal detection module detects that the strength value of the interference signal is reduced to less than the first preset value, the control module sends the shielding warning release information to the cloud platform through the communication module, and the cloud platform sends the shielding warning release information to the user's mobile terminal.

7. The anti-shielding early warning method based on a positioning device according to any one of claims 1 to 6, characterized in that: The positioning device is used to be installed on a vehicle, and the control module is connected to the vehicle controller of the vehicle by electrical signals; The anti-shielding early warning method also includes: When the communication module cannot communicate remotely with the cloud platform, the control module sends a shielding alarm signal to the vehicle controller; The vehicle controller controls the locking of the vehicle door locks and the operation of the anti-theft alarm of the vehicle based on the shielding alarm signal.

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