A closed chip abnormal state detection and anti-disassembly protection device and method

Abstract

The application discloses a closed chip abnormal state detection and anti-disassembly protection device and method, and relates to the technical field of chip protection, in particular to a closed chip abnormal state detection and anti-disassembly protection device and method. The device comprises a protection shell composed of an outer shell and an inner shell, a target storage chip is sealed in a cavity, the protection shell is fixed on a circuit board through a pin-and-socket type pin, and a connection point is hidden below the device and invisible. Different data are collected in real time through a temperature sensor, a humidity sensor, a pressure sensor, a conditioning circuit and a microprocessor, so that an alarm device is controlled to alarm. The device can quickly monitor problems of working conditions through collection of the working conditions by multiple sensors, and can protect the safety of the chip in all directions, and has higher reliability and better disassembly concealment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of electrical engineering, and particularly relates to a closed chip abnormal state detection and anti-disassembly protection device and method. BACKGROUND

[0002] In the era of information technology development, information security is a problem worth paying attention to. Especially in some specific cases, such as bank security system chips, civil aviation passenger plane core components, national major research and development data storage chips, and outdoor patrol robot master control chips, the leakage of information will cause great loss. Therefore, it is urgent to study the abnormal state detection of core chips and their anti-disassembly protection devices.

[0003] The protection of specific electronic equipment usually adopts protective shells, isolation devices, etc. to close protection, and to maximize the protection performance of the protection device. If the device is not removed correctly according to the predetermined method, the corresponding protection device will be started, so as to achieve the purpose of protecting the core chip. The existing protection devices are mostly fixed by screws, nuts, buckles, welding, etc. and the fixing points are exposed, which is not conducive to the safe operation of the protection device. At the same time, there is not enough protection capability for abnormal means such as violent removal or interference removal using high-frequency electromagnetic tools. Guangdong Tianbo Information Technology Co., Ltd. announced a kind of anti-disassembly device, method and electronic equipment (application publication number: CN114113699A) in 2022. The device uses a shielding cover to protect the target, but only considers the removal detection of the shielding cover, and does not consider the reliability problem of the device after the working environment such as temperature, humidity, pressure and frequency is affected by the outside world. Tai Xing Gaokeli (Beijing) Technology Co., Ltd. once announced a storage chip anti-disassembly self-destruction sealing body safety protection system and its working method (application publication number: CN111400781A) in 2020. It considers the influence of breaking and disassembling on the protection performance of the device, but does not consider the influence of high-frequency electromagnetic interference, and its installation adopts a naked bolt structure, which is not conducive to the safe operation of the device. The anti-disassembly of the device does not have the functions of logical sequence and time interval, and the reliability of the protection device is not high. SUMMARY

[0004] The purpose of the present application is to overcome the above-mentioned deficiencies, provide a closed chip abnormal state detection and anti-disassembly protection device and method, which has fast response speed, small device size, easy installation and wide anti-disassembly range in special environment.

[0005] In order to achieve the above object, a closed chip abnormal state detection and anti-disassembly protection device, comprising an outer shell and an inner shell, the outer shell and the inner shell constitute a protective shell, the bottom of the protective shell has a cavity for sealing the target storage chip, the inner shell is provided with a temperature sensor, a humidity sensor, a pressure sensor and a microprocessor, the four corners of the outer shell are provided with pin-male type pins, all the pin-male type pins are connected to a conditioning circuit, the conditioning circuit and the temperature sensor, the humidity sensor and the pressure sensor are connected to the microprocessor, and the microprocessor is connected to an alarm device.

[0006] The pin-male type pin comprises a first pin, the two ends of the first pin are respectively provided with a first female pin and a second female pin, the first pin is vertically provided with a second pin, the first pin and the second pin are conductors, the part of the first female pin in contact with the outer shell is covered with an insulating material, and the second female pin is in communication with the outer shell through one contact point to form a loop.

[0007] The conditioning circuit comprises a double-throw switch, two potential points are connected to the two ends of the double-throw switch, the two potential points are divided by resistors, the voltage control end of the double-throw switch is connected to the pin-male type pin, the two outputs of the double-throw switch are respectively connected to the bases of corresponding triodes, the collectors and emitters of the two triodes are connected in series and connected to a voltage output end, and the two potential points are arranged at corresponding pin-male type pins.

[0008] The outer shell is provided with a power module, and the power module is connected to the temperature sensor, the humidity sensor, the pressure sensor, the microprocessor, the conditioning circuit and the alarm device.

[0009] The top of the cavity is provided with a protection triggering device, the protection triggering device is connected to a self-destruction device, the self-destruction device is arranged in the cavity, and the protection triggering device is connected to the microprocessor.

[0010] A closed chip abnormal state detection and anti-disassembly protection method, comprising the following steps:

[0011] The target storage chip is placed in the cavity composed of the outer shell and the inner shell, the outer shell is fixed on the circuit board through the pin-male type pin, and the outer shell and the inner shell are kept sealed;

[0012] When the data monitored by any one or more of the temperature sensor, the humidity sensor and the pressure sensor exceeds the preset threshold value, the microprocessor controls the alarm device to alarm;

[0013] When the clock frequency of the microprocessor exceeds the preset threshold value, the microprocessor controls the alarm device to alarm;

[0014] When the loop of the pin-male type pin is triggered, the conditioning circuit outputs a high level, the microprocessor compares the detected high level sequence with the preset logic sequence, if correct, the clock lock is started, otherwise the alarm device is controlled to alarm;

[0015] If there is no action in the time interval of starting the clock lock, the clock lock is closed after timing, and the microprocessor continues to detect the output change of the conditioning circuit.

[0016] When at least one of the temperature sensor, humidity sensor, pressure sensor and microprocessor data exceeds the first preset threshold, the microprocessor controls the alarm device to alarm, and if all data is below the first preset threshold, the alarm ends.

[0017] When at least one of the temperature sensor, humidity sensor, pressure sensor and microprocessor data exceeds the second preset threshold, the microprocessor controls the protection trigger device to be started, and the protection trigger device triggers the self-destruction device.

[0018] When the pin is rotated, the contact of the second female pin is in contact with the shell to form a loop, triggering the conditioning circuit to form a high level.

[0019] When the current of the power module is lower than the first power threshold, intermittent beeping alarm is sent; when the current of the power module is lower than the second power threshold, the microprocessor controls the protection trigger device to be started, and the protection trigger device triggers the self-destruction device.

[0020] The alarm form is beeping and indicator light flickering.

[0021] Compared with the prior art, the protective shell is composed of the outer shell and the inner shell, the target storage chip is sealed in the cavity, the protective shell is fixed on the circuit board through the male-female pin, and the connection point is hidden below the device and invisible, different data are collected in real time through the temperature sensor, humidity sensor, pressure sensor, conditioning circuit and microprocessor, so that the alarm device is controlled to alarm; the working condition can be quickly monitored to find out the problem of the working condition, the safety of the chip is protected in all directions, and the reliability is higher, and the disassembly concealment is better.

[0022] Further, the self-destruction device is provided, the self-destruction device is activated through the protection trigger device, the self-destruction device can completely damage the storage chip as much as possible in an extreme case, and information leakage is prevented.

[0023] The method of the application can not only judge whether the environment threatens the chip through the sensor, but also can judge whether someone disassembles the device through the male-female pin disassembly sequence and rhythm, the chip safety can be reliably ensured through multi-link judgment, and the chip to be protected is prevented from being illegally obtained by others. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The level logic sequence diagram for normal disassembly action;

[0025] Figure 2 The totemic conditioning circuit principle diagram formed by the combination of triode;

[0026] Figure 3 The bottom projection drawing of the present application;

[0027] Figure 4 The installation schematic diagram of the sensor, microprocessor and protection triggering device in the protective shell of the present application;

[0028] Figure 5 The schematic diagram of the pin structure of the present application;

[0029] Figure 6 The side view of the closed chip abnormal state detection and anti-disassembly protection device of the present application;

[0030] 1, outer shell; 2, inner shell; 3, power module; 4, microprocessor; 5, temperature sensor; 6, humidity sensor; 7, pressure sensor; 8, protection triggering device; 9, cavity; 10, pin structure; 11, first female nail; 12, second female nail; 13, first male nail; 14, second male nail; 15, external display module; 16, conditioning circuit. DETAILED DESCRIPTION

[0031] The present application will be further described below in conjunction with the drawings.

[0032] Reference is made to Figure 3 , Figure 4 , drawings and Figure 6The application discloses a closed chip abnormal state detection and anti-disassembly protection device, which comprises an outer shell 1 and an inner shell 2, the outer shell 1 and the inner shell 2 form a protection shell, the bottom of the protection shell is provided with a cavity 9 for sealing a target storage chip, the outer shell 1 and the inner shell 2 are provided with a gap, a temperature sensor 5, a humidity sensor 6, a pressure sensor 7 and a microprocessor 4 are arranged in the gap, four corners of the outer shell 1 are provided with pin-male type pins 10, all the pin-male type pins 10 are connected with a conditioning circuit 16, the conditioning circuit 16, the temperature sensor 5, the humidity sensor 6 and the pressure sensor 7 are connected with the microprocessor 4, and the microprocessor 4 is connected with an alarm device. A power module 3 is arranged on the outer shell 1, and the power module 3 is connected with the temperature sensor 5, the humidity sensor 6, the pressure sensor 7, the microprocessor 4, the conditioning circuit 16 and the alarm device. The top of the cavity 9 is provided with a protection triggering device 8, the protection triggering device 8 is connected with a self-destruction device arranged in the cavity 9, and the protection triggering device 8 is connected with the microprocessor 4. The top of the inner shell 2 is covered with an insulating layer, electrical insulation is formed between each control unit and the shell, each sensor, the microprocessor 4 and the power module 3 are arranged, the microprocessor is a core component of the device, and therefore is arranged at a central position; each sensor and the power module are arranged in a ring shape around the microprocessor, the detection range of the sensors is maximally expanded, and sensitivity is improved.

[0033] The pin-male type pin 10 comprises a first pin 13, first female pins 11 and second female pins 12 are arranged at two ends of the first pin 13 respectively, a second pin 14 is vertically arranged on the first pin 13, the first pin 13 and the second pin 14 are conductors, the part, where the first female pin 11 contacts the outer shell 1, is covered with an insulating material, and the second female pin 12 is connected with the outer shell 1 through one contact point to form a loop. In working, the double-layer shell is buckled on a circuit board where a core chip is arranged, the whole shell protects the core chip in the cavity 9, and there is no gap at the edge, and the protection device can be removed only through the four first female pins 11 exposed on the shell.

[0034] Referring to Figure 2 The conditioning circuit 16 comprises a double-throw switch, two potential points are connected at two ends of the double-throw switch, the two potential points are divided by resistors respectively, a voltage control end of the double-throw switch is connected with the pin-male type pin 10, two outputs of the double-throw switch are connected with bases of corresponding triodes respectively, the collector and the emitter of the two triodes are connected in series and connected with a voltage output end, and the two potential points are arranged at corresponding pin-male type pins 10.

[0035] The microprocessor 4, the conditioning circuit 16, each sensor and the core chip are electrically isolated by the double-layer packaging shell, all the devices are powered by the power module 3 on the top of the inner shell 2, and the power voltage is not greater than 5V.

[0036] Temperature sensor 5, humidity sensor 6, and pressure sensor 7 are used to monitor changes in temperature, humidity, and pressure inside the enclosed device, respectively. Considering the special application of the device, the normal temperature range is set to 20–85℃, the normal relative humidity range to 25%–95%, and the normal pressure range to 700–1100 hPa. When the ambient temperature is 10℃ higher than the upper limit or lower than the lower limit, it is considered a minor disturbance; when it exceeds the normal temperature range by 20℃, it is considered a major disturbance. When the ambient humidity is higher than the upper limit or lower than the lower limit, it will be directly considered a major disturbance. When the pressure changes by more than ±50 hPa, it is considered a minor disturbance; when it exceeds ±200 hPa, it is considered a major disturbance. When there is a minor disturbance, an alarm is triggered on the external display module 15. When there is a major disturbance, it is considered an abnormal disassembly and a signal is issued by the protection device 8.

[0037] When the pin-female pin is disassembled, the corresponding double-throw switch is turned on, switching the working state of the transistor. The switch leakage current is less than 1 microamp, the response time is less than 0.1 milliseconds, and the switch withstand voltage is above 12V.

[0038] The transistor used in the conditioning circuit 16 has a power of no more than 1.5W, an operating temperature between -55℃ and +150℃, a breakdown voltage between the collector and emitter of no less than 40V, a collector current of no more than 1A, a characteristic frequency of at least 200MHz, and a switching delay of less than 1ms.

[0039] The bolt-and-female pin structure is used to detect disassembly actions. The bolt is a good conductor, and its head is raised for riveting connection of the second female pin 12. The tail is connected to ground, and it is connected to the ground line through a pad in the gap between the inner shell 2 and the outer shell 1. The pad is under the protection device and is not exposed, forming a control terminal circuit with the other side. The female pin is semi-insulated. The contact part between the first female pin 11 and the outer shell is made of insulating material. The second female pin 12 is semi-connected with the first bolt 13 and the second bolt 14. A circuit can only be formed when rotated to a specific position; otherwise, it is in an open state. Considering wear, the contact point can be used for no less than 1000 times.

[0040] The microprocessor 4 monitors the 32kHz clock signal. Once the frequency of the clock signal is detected to be outside the normal range of ±2kHz, it is determined to be an external electromagnetic anomaly, triggering the protection device 8 to issue a self-destruct signal.

[0041] The main control board containing the microprocessor 4 has a size no larger than 30mm*30mm (length*width); the temperature sensor 5, humidity sensor 6, and pressure sensor 7 each have a size no larger than 15mm*15mm (length*width); the entire device has a size no larger than 70mm*70mm*20mm (length*width*height).

[0042] A method for detecting and protecting a closed chip from tampering includes the following steps:

[0043] The target storage chip is placed in the cavity 9 composed of the outer shell 1 and the inner shell 2, the outer shell 1 is fixed on the circuit board through the pin 10, and the outer shell 1 and the inner shell 2 are kept sealed;

[0044] When there is no abnormal disassembly action, the device is in a normal live working state, the temperature sensor, the humidity sensor, the pressure sensor and the clock frequency are all in a normal range, the conditioning circuit 16 has no output, and the alarm module does not alarm;

[0045] When the data monitored by any one or more of the temperature sensor 5, the humidity sensor 6 and the pressure sensor 7 exceeds a preset threshold value, the microprocessor 4 controls the alarm device to alarm; the alarm form is a buzzing and an indicator light flickering.

[0046] When the clock frequency of the microprocessor 4 exceeds a preset threshold value, the microprocessor 4 controls the alarm device to alarm;

[0047] When the loop of the pin 10 triggers, the conditioning circuit 16 outputs a high level, the microprocessor 4 compares the detected high level sequence with a preset logic sequence, if correct, a clock lock is started, otherwise the alarm device is controlled to alarm;

[0048] If there is no action in the time interval of starting the clock lock, the clock lock is closed after timing, and the microprocessor 4 continues to detect the output change of the conditioning circuit 16. The response time of the microprocessor 4 to the level change is less than 1ms, and the longest response action time of the whole device is not more than 49ms.

[0049] When the four pin female nails are all unscrewed in the correct logic sequence, and the output values of the sensors in the process are in the normal range, it is determined that the disassembly is normal; the protection device system is powered off, the whole device can be lifted vertically upward and separated from the protection device, and the first pin 13 and the second pin 14 of the pin and female pin type pin are left on the circuit board.

[0050] When at least one of the temperature sensor 5, the humidity sensor 6, the pressure sensor 7 and the microprocessor 4 exceeds a first preset threshold value, the microprocessor 4 controls the alarm device to alarm, and if all the data are below the first preset threshold value, the alarm ends;

[0051] When at least one of the data from temperature sensor 5, humidity sensor 6, pressure sensor 7, and microprocessor 4 exceeds the second preset threshold, the alarm device sounds an alarm, the buzzer sounds continuously, and the indicator light flashes faster. At this time, the system determines that the device has been damaged by external force, such as by using a high-temperature gun, angle grinder cutting, water cutting, chemical corrosion, or high-frequency electromagnetic interference to remove the device, causing drastic changes in internal temperature, humidity, pressure, frequency, and power. Microprocessor 4 controls the activation of protection trigger device 8, which in turn triggers the self-destruct device. In this case, it is possible to determine abnormal disassembly without checking the output of the conditioning circuit.

[0052] When the pin-female pin 10 is rotated, when the second female pin 12 is rotated to a specific angle, the contact of the second female pin 12 contacts the housing 1 to form a circuit, triggering the conditioning circuit 16 to form a high level.

[0053] Temperature sensor 5 has a response time of no more than 7ms, humidity sensor 6 has a response time of no more than 17ms, pressure sensor 7 has a response time of no more than 30ms, and power module 3 has a detection time of no more than 48ms.

[0054] When the current of the power module is lower than the first power threshold, an intermittent buzzer alarm is issued; when the current of the power module is lower than the second power threshold, the microprocessor 4 controls the activation of the protection trigger device 8, and the protection trigger device 8 triggers the self-destruct device.

[0055] Example:

[0056] The present invention provides a closed-type chip abnormal state detection and anti-tamper protection device, comprising a protective shell composed of an outer shell 1 and an inner shell 2, a power module 3, a microprocessor 4, a temperature sensor 5, a humidity sensor 6, a pressure sensor 7, a protection trigger device 8, a pin-and-socket structure pin 10, an external display module 15, and a conditioning circuit 16.

[0057] The alarm device has alarm and charging functions. It is placed at the top center of the housing 1 and is equipped with a buzzer and indicator light. The entire device is fixed to the circuit board where the memory chip is located by the pin-mother type structure pin contacts 10, and the connection points are not visible.

[0058] The protection trigger device 8 is installed in such a way as Figure 3 The top of the cavity shown requires the protection trigger device to receive instructions from the microprocessor 4 before it can issue a self-destruct signal; the microprocessor's I / O port is connected to the control terminal of the protection trigger device through a small hole on the top of the inner shell, and the two are reliably electrically connected.

[0059] See Figure 4The inner shell 2 top center is a microprocessor unit 4, and the temperature sensor 5, humidity sensor 6, pressure sensor 7 and power module 3 are arranged around the microprocessor unit respectively, each sensor is arranged in a ring around the microprocessor unit, wherein the power module (3) adopts a 3.3V small size rechargeable button cell, and when the power is low, the charging port of the external display module can be used for charging;

[0060] As shown in Figure 2 , the input of the double-pole switch of the conditioning circuit 16 is staggered connected with two potential points after resistance voltage division, and the output is connected with the base of two triodes; the voltage control end of the double-pole switch is controlled by the pin-mother structure and the power supply 3; when the voltage of the voltage control end is at a low potential, the working state of the triode is that the upper tube is turned on and the lower tube is cut off, and the output is high level;

[0061] As shown in Figure 1 , when the output of a certain level conditioning circuit is high level, the microprocessor 4 detects whether the logic sequence is correct, if correct, the clock lock starts timing, when reaching the locking area, it cannot be operated, if the disassembly operation (i.e. high level output) is detected in this area, it is judged as abnormal disassembly, and the protection trigger device 8 sends a signal; after the clock lock timing is finished, the disassembly of the next pin can be carried out, according to the set logic sequence, assuming that the pin B is disassembled, the microprocessor 4 detects that the pin A must be high level, otherwise it is judged that the disassembly sequence is wrong, and the protection trigger device 8 sends a signal; when all pins are correctly disassembled, i.e. the outputs of the pins A, B, C and D are all high level, and the output values of the sensors are in the normal range, the disassembly is successful, and the device is powered off; Figure 1

[0062] The pin-mother type pin 10 has two states of separation and connection, as shown in Figure 4 , the separation state, and the two are not electrically connected, i.e. the voltage control end of the double-pole switch is at a low potential; as shown in Figure 5 , the connection state, the voltage control end is conducted through the pin-mother structure, and the control end of the double-pole switch is at a high level, at this time, it is a normal running condition, i.e. the pin locking state;

[0063] The use steps of the application are as follows:

[0064] Step one, place the application directly above the storage chip, and fix the device on the corresponding position of the circuit board by using the four pin-mother type pins 10, so as to ensure that the device is not loose and does not leak holes;

[0065] Step two, rotate the first female nail 11 of the pin-mother type pin 10 to the locked position, charge the power supply from the external display module 15, i.e. power on, and the protection device starts to work;

[0066] ​Step three, according to the set logic disassembly sequence operation, check sequence detection is normal;

[0067] Step four, when the power is less than 30%, the microprocessor 4 controls the alarm device to alarm, the buzzer sounds, the indicator light flashes; when the power is less than 20%, the protection trigger device 8 will send a signal to activate the self-destruction device;

[0068] Step five, real-time acquisition of temperature sensor 5, humidity sensor 6, pressure sensor 7 whether the work exceeds the set range, if exceeds the range will activate the alarm device or protection trigger device 8.

Claims

1. A closed-loop chip abnormality detection and anti-tamper protection device, characterized in that, It includes an outer shell (1) and an inner shell (2), which together form a protective shell. The bottom of the protective shell has a cavity (9) for sealing the target memory chip. The inner shell (2) is equipped with a temperature sensor (5), a humidity sensor (6), a pressure sensor (7), and a microprocessor (4). The four corners of the outer shell (1) are provided with plug-and-mother pins (10). All plug-and-mother pins (10) are connected to a conditioning circuit (16). The conditioning circuit (16), the temperature sensor (5), the humidity sensor (6), and the pressure sensor (7) are all connected to the microprocessor (4). The microprocessor (4) is connected to an alarm device. The bolt-female pin (10) includes a first bolt (13), with a first female pin (11) and a second female pin (12) respectively at both ends of the first bolt (13). A second bolt (14) is vertically arranged on the first bolt (13). The first bolt (13) and the second bolt (14) are conductors. The part of the first female pin (11) that contacts the outer shell (1) is covered with insulating material. The second female pin (12) and the outer shell (1) are connected through a contact point to form a circuit. The conditioning circuit (16) includes a double-throw switch. The two ends of the double-throw switch are connected to two potential points. The two potential points are divided by resistors. The voltage control terminal of the double-throw switch is connected to the pin-mother pin (10). The two outputs of the double-throw switch are connected to the base of the corresponding transistors. The collectors and emitters of the two transistors are connected in series and connected to the voltage output terminal. The two potential points are set on the corresponding pin-mother pin (10). A protective trigger device (8) is provided at the top of the cavity (9). The protective trigger device (8) is connected to a self-destruct device. The self-destruct device is located inside the cavity (9). The protective trigger device (8) is connected to a microprocessor (4).

2. The enclosed chip abnormality detection and anti-tamper protection device according to claim 1, characterized in that, The outer casing (1) is provided with a power module (3), which is connected to a temperature sensor (5), a humidity sensor (6), a pressure sensor (7), a microprocessor (4), a conditioning circuit (16), and an alarm device.

3. A method for detecting and protecting a closed-loop chip from tampering, based on the closed-loop chip abnormality detection and tampering protection device described in claim 1, characterized in that... Includes the following steps: The target memory chip is placed in the cavity (9) composed of the outer shell (1) and the inner shell (2). The outer shell (1) is fixed on the circuit board by the bolt-and-mother pin (10), and the outer shell (1) and the inner shell (2) are kept sealed. When the data monitored by any one or more of the temperature sensor (5), humidity sensor (6) and pressure sensor (7) exceeds the preset threshold, the microprocessor (4) controls the alarm device to issue an alarm. When the clock frequency of the microprocessor (4) exceeds the preset threshold, the microprocessor (4) controls the alarm device to issue an alarm. When the loop of the bolt-mother pin (10) is triggered, the conditioning circuit (16) outputs a high level. The microprocessor (4) compares the detected high level sequence with the preset logic sequence. If it is correct, the clock lock is started; otherwise, the alarm device is controlled to issue an alarm. If there is no action during the time interval of starting the clock lock, the clock lock will close after the timer ends, and the microprocessor (4) will continue to detect the output changes of the conditioning circuit (16); When the pin-female pin (10) is rotated, when the second female pin (12) is rotated to a specific angle, the contact of the second female pin (12) forms a circuit after contacting the outer casing (1), triggering the conditioning circuit (16) to form a high level; When the current of the power module is lower than the first power threshold, an intermittent buzzer alarm is issued; when the current of the power module is lower than the second power threshold, the microprocessor (4) controls the activation of the protection trigger device (8), and the protection trigger device (8) triggers the self-destruct device.

4. The method for detecting and protecting a closed chip from tampering according to claim 3, characterized in that, When at least one of the data from the temperature sensor (5), humidity sensor (6), pressure sensor (7) and microprocessor (4) exceeds the first preset threshold, the microprocessor (4) controls the alarm device to issue an alarm. If all data are below the first preset threshold, the alarm ends. When at least one of the data from the temperature sensor (5), humidity sensor (6), pressure sensor (7) and microprocessor (4) exceeds the second preset threshold, the microprocessor (4) controls the activation of the protection trigger device (8), and the protection trigger device (8) triggers the self-destruct device.

5. The method for detecting and protecting a closed chip from tampering according to claim 3, characterized in that, The alarm will sound and flashing indicator light.

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