Anti-tamper detection device for drone operation recognition

Abstract

The present disclosure provides an anti-disassembly detection device for unmanned aerial vehicle operation identification, comprising a main power supply, a backup power supply, an anti-disassembly conductor structure, an anti-disassembly detection circuit, a control module, a wireless communication module and a power management circuit; the anti-disassembly conductor structure is electrically connected with the anti-disassembly detection circuit; the anti-disassembly conductor structure can be constrained by an adhesive structure between the unmanned aerial vehicle shell; the anti-disassembly detection circuit is used for detecting the falling or disconnection state of the anti-disassembly conductor structure and generating a trigger signal; the control module is used for generating a disassembly alarm information according to the trigger signal and sending the disassembly alarm information through the wireless communication module; when the main power supply is powered off, the power management circuit switches the backup power supply to continuously supply power to the anti-disassembly detection circuit and makes the control module in a low-power consumption state; the power management circuit makes the control module and the wireless communication module exit the low-power consumption state and makes the control module generate the disassembly alarm information and send the disassembly alarm information through the wireless communication module in response to the trigger signal received by the control end.

Description

Technical Field

[0001] This disclosure relates to the field of unmanned aerial vehicle (UAV) technology, and more particularly to an anti-tamper detection device for identifying the operation of UAVs. Background Technology

[0002] The drone operation identification device is a device that enables broadcast operation identification and transmission functions as well as network operation identification and transmission functions. This device automatically sends identification information to a specific receiving system, usually a regulatory system, via a network and a specific transmission protocol, or automatically broadcasts operation information via a specific radio frequency and transmission protocol. It is usually fixed to the surface of the drone body by adhesive or screws.

[0003] In practical use, users may dismantle, relocate, or disable the operation identification device to evade supervision. Traditional solutions rely solely on visual inspections or periodic patrols, making it difficult to detect such dismantling in a timely manner. If modifications to the drone's circuitry or deep coupling with the controller are required, it will lead to problems such as high installation barriers, poor versatility, and compliance modification risks, making it difficult to promote and apply the technology.

[0004] Therefore, there is an urgent need for a tamper detection solution that can generate a clear electrical event and report it remotely at the moment of removal without modifying the machine's circuitry. Summary of the Invention

[0005] In view of this, the present disclosure provides an anti-tamper detection device for identifying the operation of unmanned aerial vehicles (UAVs) to solve the technical problem in the prior art that it is impossible to effectively detect tampering behavior and realize remote alarm.

[0006] To achieve the above objectives, the technical solution adopted in this disclosure is: A first aspect of this disclosure provides an anti-tamper detection device for identifying the operation of a drone, including a main power supply, a backup power supply, a housing, an anti-tamper conductor structure disposed on the housing, an anti-tamper detection circuit disposed inside the housing, a control module, a wireless communication module, and a power management circuit; the anti-tamper conductor structure is electrically connected to the anti-tamper detection circuit; the anti-tamper conductor structure can form an adhesive constraint with the drone shell through an adhesive structure, and when the adhesive structure is disassembled, the anti-tamper conductor structure falls off or breaks; the anti-tamper detection circuit is used to detect the falling off or breaking state and generate a trigger signal; the control module is used to generate a dismantling alarm information according to the trigger signal and send the dismantling alarm information through the wireless communication module; the power management circuit includes a first The system comprises an input terminal, a second input terminal, and a control terminal. The first input terminal is electrically connected to the main power supply, the second input terminal is electrically connected to the backup power supply, and the control terminal is electrically connected to the output terminal of the tamper detection circuit. The power management circuit is also electrically connected to the control module and the wireless communication module. When the main power supply is working normally, the power management circuit controls the main power supply to power the tamper detection circuit, the control module, and the wireless communication module. When the main power supply fails, the power management circuit switches to the backup power supply to continuously power the tamper detection circuit and puts the control module in a low-power state. In response to the trigger signal received by the control terminal, the power management circuit causes the control module and the wireless communication module to exit the low-power state and causes the control module to generate a removal alarm message and send it through the wireless communication module.

[0007] In some embodiments, the power management circuit puts the control module into a low-power state by: cutting off the backup power supply to the control module and the wireless communication module.

[0008] In some embodiments, the tamper detection circuit is an open circuit detection circuit or a short circuit detection circuit, and the tamper detection circuit is provided with a filter capacitor or a delay circuit.

[0009] In some embodiments, the tamper detection circuit includes a switching circuit composed of a transistor or a field-effect transistor, the tamper conductor structure is electrically connected to the control terminal of the switching circuit, and the output terminal of the switching circuit is electrically connected to the input terminal of the control module.

[0010] In some embodiments, the power management circuit puts the control module into a low-power state by: putting the control module into a sleep mode or standby mode and turning off the power to the wireless communication module.

[0011] In some embodiments, the tamper detection circuit includes a microcontroller input port of the control module, and the tamper conductor structure is electrically connected to the microcontroller input port.

[0012] In some embodiments, the tamper detection circuit includes a low-power comparator, the input of which is electrically connected to the tamper conductor structure, and the output of which is electrically connected to the interrupt wake-up pin of the control module.

[0013] In some embodiments, the backup power source is a button cell battery; and / or, the tamper-proof conductor structure is a fine copper wire or copper foil wire.

[0014] In some embodiments, an electronic fuse is connected in series in the power supply circuit or signal circuit of the control module, and the control terminal of the electronic fuse is electrically connected to the output terminal of the control module.

[0015] In some embodiments, the control module is provided with a one-time programmable memory and a data memory. The one-time programmable memory is used to store failure flags, and the data memory is used to store critical data. The control interfaces of the one-time programmable memory and the data memory are both electrically connected to the control unit of the control module.

[0016] The beneficial effects of this disclosed embodiment compared with the prior art are as follows: When the anti-tamper conductor structure in the technical solution of this disclosed embodiment is disassembled or broken, the anti-tamper detection circuit generates a trigger signal, thereby generating a removal alarm information to realize unauthorized removal alarm; furthermore, when the main power supply fails, the power management circuit switches the backup power supply to continuously power the anti-tamper detection circuit, and responds to the trigger signal received by the control terminal to power the control module and the wireless communication module to send the removal alarm information; thus, without changing the UAV body circuit, reliable detection and remote reporting of the removal of the anti-tamper detection device can be achieved, improving the traceability of supervision and the maintainability of the device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an anti-tamper detection device for identifying the operation of a drone provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram of the anti-tamper conductor structure provided in the embodiments of this disclosure; Figure 3 This is a schematic diagram illustrating the division of the constant voltage domain and the breakable domain in an embodiment of this disclosure. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this disclosure clearer, the disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this disclosure and are not intended to limit this disclosure.

[0020] The tamper detection device for identifying unmanned aerial vehicle (UAV) operation according to embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of an anti-tamper detection device for identifying the operation of a drone provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram of the anti-tamper conductor structure provided in the embodiments of this disclosure; Figure 3 This is a schematic diagram illustrating the division of the constant voltage domain and the breakable domain in an embodiment of this disclosure. The following is in conjunction with... Figures 1 to 3 Let's describe the anti-tamper detection scheme for drone operation identification provided in the embodiments of this disclosure.

[0022] like Figure 1 As shown, the tamper detection device for drone operation identification according to this embodiment includes: a main power supply 160, a backup power supply 170, a housing, a tamper conductor structure 110 disposed on the housing, a tamper detection circuit 120 disposed inside the housing, a control module 130, a wireless communication module 140, and a power management circuit 150. The tamper conductor structure 110 is electrically connected to the tamper detection circuit 120; the tamper conductor structure 110 can form an adhesive constraint with the drone housing through an adhesive structure, and when the adhesive structure is disassembled, the tamper conductor structure 110 detaches or breaks; the tamper detection circuit 120 is used to detect the detachment or breakage state and generate a trigger signal; the control module 130 is used to generate a dismantling alarm information according to the trigger signal and send the dismantling alarm information through the wireless communication module 140; the power management circuit 150 includes a first input terminal, a second input terminal, and a control terminal. The first input terminal is electrically connected to the main power supply 160, the second input terminal is electrically connected to the backup power supply 170, and the control terminal is electrically connected to the main power supply 160. The output of the tamper detection circuit 120 is electrically connected, and the power management circuit 150 is also electrically connected to the control module 130 and the wireless communication module 140 respectively. When the main power supply 160 is supplying power normally, the power management circuit 150 controls the main power supply to supply power to the tamper detection circuit 120, the control module 130 and the wireless communication module 140. When the main power supply fails, the power management circuit switches to the backup power supply to continuously supply power to the tamper detection circuit and puts the control module in a low-power state. In response to the trigger signal received by the control terminal, the power management circuit causes the control module and the wireless communication module to exit the low-power state, and causes the control module to generate a removal alarm information and send it through the wireless communication module.

[0023] When the tamper detection device used for drone operation identification is removed without authorization, the tamper conductor structure detaches or breaks under external force, causing an electrical open or short circuit. Upon detecting this electrical change, the tamper detection circuit triggers a removal event, generating a removal event trigger signal. After the tamper detection circuit generates the removal event, the control module sends a removal signal, i.e., a removal alarm message, to the monitoring backend via the wireless communication module. This removal alarm message includes at least the device's unique identifier, event type, and timestamp. It may also include battery level, the most recent valid location information, signature / verification information, or flight status information.

[0024] The technical solution of this disclosure can achieve all-weather anti-tamper detection. Regardless of whether the main power supply is on or off, it can maintain monitoring of tampering behavior through the backup power supply and report it immediately when tampering occurs. After the main power supply fails, the system automatically enters a low-power mode, which greatly extends the battery life of the backup power supply. It adopts a physical disconnection trigger mechanism, which has high detection reliability, does not require modification of the original circuit of the drone, and is easy to install and highly versatile. The anti-tamper conductor structure forms a physical constraint of "disassembly must break" or "disassembly must change the electrical state", and the alarm trigger is clear and can be repeatedly verified.

[0025] The control terminal of the power management module can be the enable pin of the power management chip, the interrupt pin of the microcontroller, or the output of the comparator. Correspondingly, the trigger signal can be directly used as the enable signal of the power management circuit, or it can wake up the microcontroller. The microcontroller then controls the power management circuit through the I / O port. In addition, the trigger signal can also be processed by the comparator and then sent to the power management circuit.

[0026] Specifically, the power management circuit can put the control module into a low-power state by cutting off the backup power supply to the control module and the wireless communication module. This method, by completely cutting off the power supply to the control module and the wireless communication module, achieves a near-zero power standby mode, maximizing the lifespan of the backup power supply.

[0027] Furthermore, the power management circuit can also put the control module into a low-power state by enabling it to enter sleep or standby mode and shutting down the power to the wireless communication module. This method reduces power consumption while maintaining the clock and register functions of the control module, achieving both rapid response to trigger signals and significant reduction in power consumption. In this method, the tamper detection circuit can be the microcontroller input port of the control module, with the tamper-proof conductor structure electrically connected to the microcontroller input port. This method, which directly utilizes the internal input port of the microcontroller for detection, requires no additional components, has a simple structure, low cost, and is easy to implement with software debouncing and logical judgment.

[0028] In this embodiment of the disclosure, in addition to using the above-mentioned detection method using the GPIO of a microcontroller to monitor the conduction status, the anti-tamper detection circuit can also use pull-up resistors / pull-down resistors or comparators to monitor the conduction status.

[0029] When using pull-up / pull-down resistors for continuity monitoring, the resistance value of the pull-up or pull-down resistor can be set to 1 megohm or higher.

[0030] Furthermore, the power management circuit may include a timer that controls the power management circuit to periodically supply power to the tamper detection circuit, which detects the detachment or disconnection of the tamper conductor structure only during power supply.

[0031] Specifically, the tamper detection circuit can be an open-circuit detection circuit or a short-circuit detection circuit, and it includes a filter capacitor or a delay circuit. Using open-circuit or short-circuit detection methods results in a simple and reliable circuit; the filter capacitor or delay circuit effectively filters out transient interference signals, preventing false triggering caused by vibration, electromagnetic interference, etc., thus improving detection accuracy. Specifically, using a delay circuit to set a threshold time can filter out instantaneous interference.

[0032] In another implementation, the tamper detection circuit can be a switching circuit composed of transistors or field-effect transistors. The tamper-proof conductor structure is electrically connected to the control terminal of the switching circuit, and the output terminal of the switching circuit is electrically connected to the input terminal of the control module. Using transistors or field-effect transistors to construct the switching circuit can convert the conductor's on / off state into a stable level signal, adapting to different voltage logics, and offering fast response speed and low cost.

[0033] In another embodiment of this disclosure, the tamper detection circuit can be a low-power comparator. The input terminal of the low-power comparator is electrically connected to the tamper-proof conductor structure, and the output terminal of the low-power comparator is electrically connected to the interrupt wake-up pin of the control module. By using an independent low-power comparator as the monitoring front end, the conductor state can be continuously monitored when the control module is completely powered off or in sleep mode. Once a breakage occurs, the system is immediately woken up via an interrupt, achieving real-time response under extremely low power consumption.

[0034] In this embodiment of the disclosure, the backup power source can be a button battery. Button batteries are small in size, have moderate capacity, and are easy to replace, making them suitable as backup power sources.

[0035] The housing of an anti-tamper detection device used for drone operation identification can consist of an upper cover and a lower cover. For example... Figure 2As shown, the tamper-proof conductor structure can be a thin copper wire 220 disposed on the back tamper-proof conductor area of ​​the housing 210. Alternatively, the tamper-proof conductor structure can be other conductors, such as flexible copper foil wire, copper-clad film conductor, or printed conductor. Thin copper wire or copper foil wire is inexpensive and easily broken, ensuring that physical breakage inevitably occurs when the double-sided adhesive 230 is removed, thus ensuring reliable detection triggering. The double-sided adhesive 230 can be a strong double-sided adhesive, specifically acrylic foam adhesive or structural tape. The bonding area of ​​the double-sided adhesive 230 and the conductor routing can be designed to preferentially induce breakage in the removal direction.

[0036] One end of the tamper-proof conductor structure can be electrically connected to the pads or connectors of the tamper-proof detection circuit, while the other end forms a loop with the same end of the tamper-proof conductor structure or with the grounding terminal. The tamper-proof conductor structure is bonded to the drone's casing with strong double-sided adhesive, creating a pulling or shearing constraint on the conductor during removal, causing the conductor to detach or break.

[0037] After the device is installed, the tamper-proof conductor structure and the strong double-sided adhesive form a fixed constraint. The tamper-proof detection circuit collects the electrical state of the conductor circuit and records it as "intact". When the user attempts to remove the operating identification device, because the conductor is bonded to the casing, the movement of the device body will generate tensile or shear forces on the conductor, causing the conductor to break, detach from the solder, or separate from the adhesive surface. This results in one of the following: an open circuit in the detection circuit, a preset short circuit, or a level reversal. After the control module detects an electrical state change that lasts for more than a threshold time, it determines that a "tampering event" has occurred.

[0038] In this embodiment of the disclosure, the device can be permanently disabled by physical melting or logical locking after it is removed.

[0039] In the physical fuse-breaking scheme, an electronic fuse is connected in series in the power supply or signal circuit of the control module, and the control terminal of the electronic fuse is electrically connected to the output terminal of the control module. After confirming a tampering incident, the control module can actively blow the electronic fuse, permanently cutting off the power supply or signal path of the core circuit, preventing the tamper detection device from being restarted and preventing it from being illegally transferred or reused.

[0040] In the logic-locking scheme, the control module is equipped with a one-time programmable memory and a data memory. The one-time programmable memory stores failure flags, and the data memory stores critical data. Both the one-time programmable memory and the data memory have control interfaces electrically connected to the control module's control unit. Upon triggering removal, the control module can write an unalterable failure flag into the one-time programmable memory or erase critical information such as device certificates and keys from the data memory, permanently disabling the tamper detection device's legitimate function. Even hardware repair cannot restore its functionality, significantly enhancing tamper security.

[0041] The control interface of the data storage device includes a write-protection interface or an erase control interface. By controlling the write-protection interface or erase interface of the data storage device, critical data of the device can be erased or locked.

[0042] Following a dismantling incident, the anti-tamper detection device used for drone operation identification can report immediately, sending a dismantling alarm message to the monitoring backend. Alternatively, it can delay the retransmission; that is, when the wireless link is unavailable, the alarm message is written to local non-volatile storage and automatically retransmitted after the link is restored. Specifically, the non-volatile storage can be set up in the control module to temporarily store alarm information when the network is unavailable and retransmit it after the link is restored. This solves the problem of alarm loss in wireless signal blind spots or temporary network failures, ensuring the traceability of dismantling incidents. The ability to send dismantling incidents either immediately after occurrence or retransmit after network restoration improves monitoring traceability.

[0043] To enable the tamper detection circuit to operate with ultra-low power consumption when the main power supply fails and it is powered only by a button battery, the power management circuit can adopt a design strategy of time-sharing power supply, module hibernation, and event wake-up.

[0044] The power management circuit first partitions the load in hardware to ensure that only necessary modules consume power during standby. For example, ... Figure 3 As shown, the load can be divided into a constant power domain 310 and a disconnectable domain 320. The constant power domain contains only the power management circuitry itself and the tamper detection circuitry, which is directly powered by a coin cell battery, resulting in extremely low power consumption. The disconnectable domain contains high-power devices such as control modules, wireless communication modules, and non-volatile memory. These modules have load switches at their power supply inputs, controlled by the power management circuitry.

[0045] When the main power supply fails, the power management circuit automatically switches to coin cell battery power and immediately puts the system into deep sleep mode. At this time, the control module stops working, the wireless module is powered off, and only the "sensor" remains operational. The detection circuit, consisting only of a tamper-proof conductor structure, is then connected to an ultra-low power comparator or the wake-up pin of the control module.

[0046] To ensure the tamper detection circuit itself consumes little or no power, level-triggered interrupts or edge-triggered wake-up can be used. When using level-triggered interrupts, the tamper conductor structure maintains continuity under normal conditions, pulling one detection pin low or high. If the conductor breaks, the pin level flips through the pull-up / pull-down resistors. Using high-value resistors in the megaohm range limits the current in the path to the nanoamp level, resulting in almost no power consumption in the static state. The power management circuit can periodically provide a brief pulse voltage to this detection circuit, immediately cutting off power after detection to further reduce power consumption.

[0047] When using edge-triggered wake-up, the tamper-proof conductor structure is directly connected to the edge-triggered wake-up pin of the control module or a separate level-triggered physical pin. The instant the conductor of the tamper-proof conductor structure breaks, a level transition forms a rising or falling edge. This physical signal directly wakes the control module from deep sleep, without requiring polling. While waiting for an event to occur, this pin is in a high-impedance state, with leakage current only in the picoampere range.

[0048] In the event of removal, the conductor breaks, and a voltage level change signal is immediately sent to the power management circuit or the control module's wake-up pin. The power management circuit is then awakened. It closes the load switch supplying power to the control module, powering it on. Upon startup, the control module first performs its core task: writing an OTP failure flag or blowing the electronic fuse. The control module then wakes up the wireless communication module and sends an alarm using the remaining power of the coin cell battery. After the alarm is sent, the power management circuit either cuts off power to both the wireless module and the control module again, or the control module returns to sleep mode.

[0049] The power management circuit eliminates quiescent current by physically isolating high-power devices, using high-resistance resistors or pulse sampling, and relies on hardware edge triggering instead of software polling. This achieves ultra-low power consumption, allowing the tamper detection circuit to operate with microamp-level current for extended periods while powered by a coin cell battery, only activating at the moment of removal. When the main power is off, the device maintains basic monitoring via the coin cell battery. If removal occurs at this time, the control module will also trigger a permanent failure mechanism. Considering the limited energy of the coin cell battery, the failure operation will preferentially use the low-power OTP writing method, as writing an OTP typically requires only a brief high-voltage pulse, consuming far less energy than driving the wireless communication module to send alarms. Alarm transmission can be performed subsequently or in parallel with the failure operation while controlling power consumption.

[0050] Once removed, the device cannot be restored to function by repairing broken wires, replacing batteries, or reinstalling, thus eliminating the risk of the device being maliciously transferred or reused.

[0051] When the main battery pack is maliciously removed, naturally depleted, or malfunctions causing a complete power outage, the tamper protection function is at risk of failure. In this case, if the device itself is removed from the drone, traditional designs will not be able to trigger an alarm. The tamper detection device of this embodiment can integrate a button battery or an equivalent micro backup power supply, which is normally in an ultra-low power standby state or is kept fully charged by the main power supply.

[0052] When the main power supply fails, the power management circuit automatically and seamlessly switches to button battery power to provide a continuous microamp-level operating current for the tamper detection circuit and control module.

[0053] Powered by a button battery, the tamper detection circuit continues to monitor the status of the fine copper wire loop. Even if removal causes a break in the wire, the control module can still detect the electrical change.

[0054] Upon detecting a removal event, the control module immediately activates the wireless communication module, using the power stored in the button battery to send an alarm message. Due to the limited capacity of the button battery, the system prioritizes sending alarms only once or a limited number of times, and may employ a low-power communication protocol to extend the transmission distance. Even if the main power supply fails, the tamper detection device still possesses a final alarm capability, eliminating the possibility of circumventing supervision by first cutting off the power and then removing the device.

[0055] In one embodiment, a JFET can be used in the tamper detection circuit to detect the tamper status. The gate of the JFET is connected to the tamper conductor structure, and the gate is connected to the negative terminal of the battery through a large resistor, so that the gate potential is 0, which can further reduce power consumption.

[0056] The button battery maintains only the basic monitoring circuitry, with extremely low power consumption under normal conditions, allowing for standby time of several months or even longer, ensuring effective backup protection throughout the device's lifespan. Power-off removal alarms serve as crucial evidence, demonstrating to regulators that the device has suffered physical damage. Even if location information cannot be subsequently obtained, the removal time and device identity can be pinpointed. This extended design evolves the anti-tampering mechanism from a "single-point dependency" to "dual protection," significantly enhancing the anti-interference capability and regulatory credibility of the drone operation identification device.

[0057] According to the anti-tamper detection device for UAV operation identification provided in this disclosure embodiment, the anti-tamper conductor structure falls off or breaks when the adhesive structure is disassembled, causing the anti-tamper detection circuit to generate a trigger signal, thereby generating a removal alarm information to realize unauthorized removal alarm; furthermore, when the main power supply fails, the power management circuit switches the backup power supply to continuously power the anti-tamper detection circuit, and responds to the trigger signal received by the control terminal to power the control module and the wireless communication module to send the removal alarm information; thus, without changing the UAV body circuit, reliable detection and remote reporting of the removal of the anti-tamper detection device can be achieved, improving regulatory traceability and device maintainability.

[0058] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A tamper detection device for identifying the operation of unmanned aerial vehicles (UAVs), characterized in that, It includes a main power supply, a backup power supply, a housing, an anti-tamper conductor structure disposed on the housing, an anti-tamper detection circuit disposed inside the housing, a control module, a wireless communication module, and a power management circuit; The tamper-proof conductor structure is electrically connected to the tamper-proof detection circuit. The tamper-proof conductor structure can form an adhesive constraint with the drone shell through an adhesive structure. When the adhesive structure is disassembled, the tamper-proof conductor structure will fall off or break. The tamper detection circuit is used to detect the detachment or disconnection state and generate a trigger signal; The control module is used to generate a demolition alarm message based on the trigger signal, and to send the demolition alarm message through the wireless communication module; The power management circuit includes a first input terminal, a second input terminal, and a control terminal. The first input terminal is electrically connected to the main power supply, the second input terminal is electrically connected to the backup power supply, and the control terminal is electrically connected to the output terminal of the tamper detection circuit. The power management circuit is also electrically connected to the control module and the wireless communication module, respectively. When the main power supply is working normally, the power management circuit controls the main power supply to provide power to the anti-tamper detection circuit, the control module and the wireless communication module; When the main power supply fails, the power management circuit switches the backup power supply to continuously power the anti-tamper detection circuit and puts the control module in a low-power state. In response to the trigger signal received by the control terminal, the power management circuit causes the control module and the wireless communication module to exit the low-power state, and causes the control module to generate a removal alarm message and send it through the wireless communication module.

2. The tamper detection device according to claim 1, characterized in that, The power management circuit controls the control module to be in a low-power state by: cutting off the power supply from the backup power supply to the control module and the wireless communication module.

3. The tamper detection device according to claim 1, characterized in that, The tamper detection circuit is an open circuit detection circuit or a short circuit detection circuit, and the tamper detection circuit is equipped with a filter capacitor or a delay circuit.

4. The tamper detection device according to claim 1, characterized in that, The tamper detection circuit includes a switching circuit composed of transistors or field-effect transistors. The tamper conductor structure is electrically connected to the control terminal of the switching circuit, and the output terminal of the switching circuit is electrically connected to the input terminal of the control module.

5. The tamper detection device according to claim 1, characterized in that, The power management circuit controls the control module to be in a low-power state by: controlling the control module to enter a sleep mode or standby mode, and turning off the power of the wireless communication module.

6. The tamper detection device according to claim 5, characterized in that, The tamper detection circuit includes the microcontroller input port of the control module, and the tamper conductor structure is electrically connected to the microcontroller input port.

7. The tamper detection device according to claim 2 or 5, characterized in that, The tamper detection circuit includes a low-power comparator, the input of which is electrically connected to the tamper conductor structure, and the output of which is electrically connected to the interrupt wake-up pin of the control module.

8. The tamper detection device according to claim 1, characterized in that, The backup power source is a button battery; and / or, the tamper-proof conductor structure is a fine copper wire or copper foil wire.

9. The tamper detection device according to claim 1, characterized in that, An electronic fuse is connected in series in the power supply circuit or signal circuit of the control module, and the control terminal of the electronic fuse is electrically connected to the output terminal of the control module.

10. The tamper detection device according to claim 1, characterized in that, The control module is equipped with a one-time programmable memory and a data memory. The one-time programmable memory is used to store failure flags, and the data memory is used to store critical data. The control interfaces of the one-time programmable memory and the data memory are both electrically connected to the control unit of the control module.

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