Anti-shielding early warning method based on positioning device

Abstract

The invention provides an anti-shielding early warning method based on a positioning device, the positioning device comprises a communication module, a positioning module, an interference signal detection module and a control module, and the communication module, the positioning module and the interference signal detection module are all in electric signal connection with the control module; the anti-shielding early warning method comprises the steps that a control module controls an interference signal detection module to continuously work, and the interference signal detection module is used for detecting the intensity value of interference signals around a 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 first-level shielding early warning information to the cloud platform through the communication module, and the cloud platform sends the first-level shielding early warning information to a mobile terminal of a user.

Description

Technical Field

[0001] The present invention relates to the field of positioning technology, and in particular to an anti-shielding early 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). Positioning devices are generally used to be installed on vehicles, cargo, etc. Positioning devices generally have a positioning module and a communication module. The positioning module is used to obtain the location information of the positioning device, and then the communication module transmits the location information obtained by the positioning module to the cloud server. Users use their mobile terminal devices (such as mobile phones) to interact with the cloud server to obtain the location information of the positioning device, thereby obtaining the location information of vehicles, cargo, etc., to ensure the safety of vehicles and cargo.

[0003] However, in actual use, since the signals of the positioning module and the communication module in the positioning device are affected by external interference signals, some criminals use signal blockers to interfere with the normal operation of the positioning device, making it impossible for users to track the location information of vehicles, goods, etc. through the positioning device. Moreover, when the positioning device is interfered by the signal blocker, it is impossible to send an alarm message to the user in time, thereby achieving the purpose of stealing vehicles, goods, etc. Summary of the invention

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

[0005] The present invention provides an anti-shielding early warning method based on a positioning device, wherein 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 intensity value of the interference signal reaches a first preset value, the control module sends a first-level shielding warning information to the cloud platform through the communication module, and the cloud platform sends the first-level shielding warning information to the user's mobile terminal.

[0006] In one achievable manner, the anti-shielding early warning method further includes: 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 second-level shielding warning information to the cloud platform through the communication module, and the cloud platform sends the second-level shielding warning information to the user's mobile terminal; wherein the second preset value is greater than the first preset value.

[0007] In one achievable manner, the first preset value and the second preset value are both smaller than a threshold value; the threshold value is a strength value of the interference signal when the communication module and the cloud platform are unable to communicate remotely.

[0008] In one achievable manner, the method for determining the threshold value includes: (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 repeat the above steps (3) to (6) respectively, and then obtain the corresponding interference signal detection module detected by the signal shielding device's interference signal strength values ​​RSSI2, RSSI3, ...RSSI n , the threshold = min(RSSI1, RSSI2, RSSI3, ...RSSI n ).

[0009] 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.

[0010] In an achievable manner, the positioning device further includes 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.

[0011] In one achievable manner, the anti-shielding early warning method further 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.

[0012] In one achievable manner, the anti-shielding early warning method further 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.

[0013] In one achievable manner, the anti-shielding early warning method further 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.

[0014] 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; The anti-shielding early warning method also includes: When the communication module is unable to 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's door locks and the operation of the vehicle's anti-theft alarm based on the shielding alarm signal.

[0015] The anti-shielding warning method based on the positioning device provided by the present invention, by setting an interference signal detection module in the positioning device, 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 immediately sends a first-level shielding warning information to the cloud platform through the communication module, and the cloud platform sends the first-level shielding warning information to the user's mobile terminal, so that the user knows in time that the positioning device is suffering from signal interference, realizes the signal interference warning function, avoids the loss of vehicles, goods, etc., and ensures property safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the positioning device in an embodiment of the present invention.

[0017] Figure 2 for Figure 1 Schematic diagram of the explosion structure.

[0018] Figure 3 Schematic diagram of the signal transmission relationship between the positioning device, the cloud platform and the mobile terminal in an embodiment of the present invention.

[0019] Figure 4 Schematic diagram of the connection relationship between the positioning device and the vehicle in an embodiment of the present invention.

[0020] Figure 5 The figure is a schematic diagram showing the relationship between the intensity of the interference signal detected by the interference signal detection module and time when the signal shielding device is working in the embodiment of the present invention. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] The terms "first", "second", "third", "fourth" and the like (if any) in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a particular sequence or order.

[0023] The directional words such as up, down, left, right, front, back, top, bottom, etc. (if any) involved in the specification and claims of the present invention are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, and are only for the clarity and convenience of expressing the technical solution. It should be understood that the use of directional words should not limit the scope of protection claimed in the present invention.

[0024] like Figures 1 to 5As shown, the embodiment of the present invention provides an anti-shielding warning method based on a positioning device, wherein the positioning device 1 includes a communication module 11, a positioning module 12, an interference signal detection module 13 and a control module 14, wherein 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 for wirelessly transmitting the positioning information received by the positioning module 12 to the cloud platform 2 (i.e., the cloud server) through the communication module 11, and the user's mobile terminal 3 (such as a mobile phone, a computer, etc.) can interact with the cloud platform 2 for data, thereby obtaining positioning information (the specific functions and working principles of the communication module 11 and the positioning module 12 can refer to the prior art, which will not be repeated here); the interference signal detection module 13 is used to detect the strength value of the interference signal around the positioning device 1.

[0025] The anti-shielding early warning method includes: The control module 14 controls the interference signal detection module 13 to work continuously (ie, work uninterruptedly), and uses the interference signal detection module 13 to detect the strength value of the interference signal around the positioning device 1; When the interference signal detection module 13 detects that the strength value of the interference signal reaches (i.e. is greater than or equal to) a first preset value, the control module 14 immediately sends a first-level shielding warning message to the cloud platform 2 through the communication module 11, and the cloud platform 2 sends the first-level shielding warning message to the user's mobile terminal 3, thereby reminding the user.

[0026] The anti-shielding warning method based on the positioning device provided in the embodiment of the present invention is to set an interference signal detection module 13 in the positioning device 1, and use the interference signal detection module 13 to detect the strength value of the interference signal around the positioning device 1; when the interference signal detection module 13 detects that the strength value of the interference signal reaches the first preset value, the control module 14 immediately sends the first-level shielding warning information to the cloud platform 2 through the communication module 11, and the cloud platform 2 sends the first-level shielding warning information to the user's mobile terminal 3, so that the user knows in time that the positioning device 1 is suffering from signal interference, realizes the signal interference warning function, avoids the loss of vehicles, goods, etc., and ensures property safety. The positioning device 1 can be set not only on vehicles, but also on goods, ships and other application occasions.

[0027] As an implementation mode, the anti-shielding early warning method further includes: When the interference signal detection module 13 detects that the strength value of the interference signal reaches (i.e. is greater than or equal to) a second preset value, the control module 14 immediately sends a second-level shielding warning message to the cloud platform 2 through the communication module 11, and the cloud platform 2 sends the second-level shielding warning message to the user's mobile terminal 3; wherein the second preset value is greater than the first preset value.

[0028] Specifically, the first preset value and the second preset value are both smaller than the threshold value; the threshold value is the strength value of the interference signal when the communication module 11 and the cloud platform 2 cannot communicate remotely (that is, when the interference signal detection module 13 detects that the strength value of the interference signal reaches the threshold value, the communication module 11 and the cloud platform 2 will not be able to communicate remotely, and the communication module 11 cannot send shielding warning information to the cloud platform 2, that is, the positioning device 1 has been shielded at this time).

[0029] like Figure 5 As shown, when the signal isolator is working, the intensity of the interference signal it emits will first increase and then tend to stabilize (the intensity of the interference signal is related to the working power of the signal isolator. When the signal isolator 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 a few seconds to tens of seconds), its working power tends to stabilize, so the intensity of the interference signal it emits also tends to stabilize), so the intensity of the interference signal detected by the interference signal detection module 13 will also increase first and then tend to stabilize. When the interference signal detection module 13 detects that the intensity value of the interference signal reaches the threshold, the communication module 11 and the cloud platform 2 will not be able to communicate remotely, and the communication module 11 cannot send shielding warning information to the cloud platform 2. Therefore, it is necessary to set the above-mentioned first preset value and the second preset value to be less than the threshold so that the control module 14 can send shielding warning information to the cloud platform 2 through the communication module 11 in time.

[0030] At the same time, by setting the first-level warning and the second-level warning, it can prevent false alarms. Specifically, since there will be more interference signals around the positioning device 1 during actual use; when the intensity of the interference signal reaches the first preset value, it is impossible to accurately determine whether it is an interference signal emitted by the signal blocker (it may be an interference signal emitted unintentionally by other devices), and the control module 14 can send information such as "suspected signal blocker interference is 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 interference signal detected at this time is relatively large, and general equipment cannot generate such a strong interference signal, it can be judged that the positioning device 1 is most likely being interfered by the signal blocker. At this time, the control module 14 can send information such as "signal blocker interference is 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. Such a setting can not only avoid the positioning device 1 from being unable to issue early warning information in time (if only a second-level early warning is set, due to the high intensity of the interference signal at this time, the positioning device 1 may not be able to smoothly send the early warning information to the cloud platform 2 under strong signal interference, resulting in early warning failure), but also avoid false alarms.

[0031] As an implementation manner, the first preset value is 20% to 50% of the threshold value, and the second preset value is 40% to 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.

[0032] As an implementation manner, the method for determining the above threshold includes: (1) Place the signal blocker around the positioning device 1 so that the distance between the signal blocker and the positioning device 1 is within a preset range (for example, the distance between the signal blocker and the positioning device 1 is 1 meter); (2) Controlling the positioning device 1 to continuously (i.e., uninterruptedly) send calibration information to the cloud platform 2 through the communication module 11. The calibration information may be any information (e.g., a number of characters, etc.); (3) Adjust the working frequency of the signal blocker to f1, then turn on the signal blocker to make it emit an interference signal, and obtain the strength value of the interference signal emitted by the signal blocker detected in real time by the interference signal detection module 13 (specifically, the positioning device 1 can be connected to a computer or other equipment, and the computer can be used to read the strength value of the interference signal detected in real time by the interference signal detection module 13 to obtain a signal similar to Figure 5 The relationship between the strength value of the interference signal and time shown); (4) Obtaining the time node at which 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); (5) According to the time node, the strength value (i.e., the limit strength value) of the interference signal emitted by the signal blocker detected by the interference signal detection module 13 corresponding to the time node is obtained, which is recorded as RSSI1; for example, if the cloud platform 2 cannot receive the calibration information from the 5th second after the signal blocker is turned on, then the time node is the 5th second, and the strength value of the interference signal detected by the interference signal detection module 13 at the 5th second is the limit strength value; (6) Turn off the signal blocker; (7) Adjust the operating frequency of the signal jammer to f2, f3, ... f n Then, the above steps (3) to (6) are repeated respectively, and the strength values ​​of the interference signals RSSI2, RSSI3, ... RSSI emitted by the signal shielding device detected by the corresponding interference signal detection module 13 are obtained respectively. n , the threshold = min(RSSI1, RSSI2, RSSI3, ...RSSI n ).

[0033] Specifically, since the communication module 11 generally has multiple working frequency bands (such as 2G frequency band, 3G frequency band, 4G frequency band, etc.), the signal blocker is generally also configured with multiple working frequency bands to block and interfere with each frequency band of the communication module 11. However, the intensity changes of the interference signals emitted by the signal blocker in each working frequency band are not completely consistent, and the anti-interference ability of the communication module 11 to each frequency band is also inconsistent (that is, the thresholds are different under different working 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 blocker uses various working frequency bands for interference, the limit intensity values ​​of the interference signals corresponding to the inability of the communication module 11 to communicate remotely with the cloud platform 2 are tested respectively when the signal blocker uses various working frequency bands for interference, and then the minimum value of these limit intensity values ​​is taken to obtain the threshold value.

[0034] For example, the operating frequencies of the signal blocker are adjusted to 869-894 MHz, 925-960 MHz, 1805-1880 MHz, 1900-1990 MHz and 2100-2200 MHz (the above frequency bands can basically cover all the operating frequency bands of the communication module 11), and the corresponding limit strength values ​​are obtained as RSSI1, RSSI2, RSSI3, RSSI4 and RSSI5, and then the minimum value of the five data is taken as the threshold.

[0035] It should be noted that the order of the above steps (2) and (3) cannot be reversed. If the signal blocker is opened and adjusted first, and then the communication module 11 is controlled to send the calibration information to the cloud platform 2, due to the 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, thus causing the measurement failure.

[0036] like Figure 3 As shown, as an implementation mode, the positioning device 1 further includes an alarm module 17, and the alarm module 17 is electrically connected to the control module 14; The anti-shielding early warning method also includes: When the interference signal detection module 13 detects that the strength value of the interference signal reaches a second preset value, the control module 14 controls the alarm module 17 to send out an alarm signal; When the interference signal detection module 13 detects that the strength value of the interference signal decreases to less than the second preset value, the control module 14 controls the alarm module 17 to release the alarm.

[0037] Specifically, the alarm module 17 can be a speaker, an audible and visual alarm device, etc.; 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 buzz, flash, etc. to serve as a warning and deterrent.

[0038] As an implementation mode, the anti-shielding early warning method further includes: When the communication module 11 and the cloud platform 2 cannot communicate remotely, the cloud platform 2 records the duration of the inability of the communication module 11 and the cloud platform 2 to communicate remotely; When the duration reaches a preset duration, the cloud platform 2 sends a shielding confirmation message to the user's mobile terminal 3 .

[0039] Specifically, after the control module 14 sends the second-level shielding warning information to the cloud platform 2 through the communication module 11, the cloud platform 2 continues to communicate remotely with the communication module 11. When the communication module 11 and the cloud platform 2 are unable to communicate remotely (for example, the cloud platform 2 continues to send information to the communication module 11, but does not receive a reply from the communication module 11), and the communication failure continues for a period of time (for example, 1 minute), the cloud platform 2 determines that the positioning device 1 has been blocked, and then sends a blocking confirmation message to the user's mobile terminal 3 (for example, sending information such as "the positioning device has been blocked"), thereby reminding the user.

[0040] As an implementation mode, the anti-shielding early warning method further includes: 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.

[0041] As an implementation mode, the anti-shielding early warning method further includes: 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; 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.

[0042] 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; The anti-shielding early warning method also includes: 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.

[0043] like Figure 1 and Figure 2 As shown, as an embodiment, the positioning device 1 also includes a housing 15 and a circuit board 16, the circuit board 16 is arranged in the housing 15, and 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 arranged on the circuit board 16 and are all electrically connected to the circuit board 16. The communication module 11 is a 2G / 4G dual-frequency network communication module, that is, the communication module 11 is compatible with the communication of the 2G network and the 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 also 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 out of 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, and 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 to send and receive communication information, the positioning antenna 121 is used to receive positioning information, and the interference signal detection antenna is used to receive interference signals around the positioning device 1 and transmit the interference signals to the interference signal detection module 13.

[0044] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on 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 intensity value of the interference signal reaches a first preset value, the control module sends a first-level shielding warning information to the cloud platform through the communication module, and the cloud platform sends the first-level shielding warning information to the user's mobile terminal.

2. 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 intensity value of the interference signal reaches a second preset value, the control module sends a second-level shielding warning information to the cloud platform through the communication module, and the cloud platform sends the second-level shielding warning information to the user's mobile terminal; wherein the second preset value is greater than the first preset value.

3. The anti-shielding early warning method based on the positioning device according to claim 2, characterized in that: The first preset value and the second preset value are both smaller than a threshold value; the threshold value is a strength value of the interference signal when the communication module and the cloud platform are unable to perform remote communication.

4. The anti-shielding early warning method based on the positioning device according to claim 3, characterized in that: The method for determining the threshold value includes: (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 repeat the above steps (3) to (6) respectively, and then obtain the corresponding interference signal detection module detected by the signal shielding device's interference signal strength values ​​RSSI2, RSSI3, ...RSSI n , the threshold = min(RSSI1, RSSI2, RSSI3, ...RSSI n ).

5. The anti-shielding early warning method based on the positioning device according to claim 3, 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.

6. The anti-shielding early warning method based on the positioning device according to claim 2, 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.

7. The anti-shielding early warning method based on a 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.

8. The anti-shielding early warning method based on a positioning device as claimed in 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.

9. The anti-shielding early warning method based on a positioning device as claimed in 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.

10. The anti-shielding early warning method based on a positioning device according to any one of claims 1 to 9, 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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