Computer hardware anti-theft device and using method thereof
By designing computer hardware anti-theft devices that integrate microcontroller units, wireless communication modules and MEMS acceleration sensors, the problem that traditional equipment cannot accurately protect internal hardware is solved, efficient hardware anti-theft functions are achieved, and installation simplicity and appearance are maintained.
Patent Information
- Application Number
- CN202510290722.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2025-06-24
AI Technical Summary
Traditional computer hardware anti-theft equipment cannot accurately protect internal hardware, it is complex in installation and affects aesthetics, and is easy to be cracked, making it difficult to effectively ensure hardware security.
Design a computer hardware anti-theft device including a chassis, a control mechanism and an anti-theft mechanism. The chassis is integrated with a mounting cavity on the sides and the side panels can be slid to protect the hardware. The control mechanism integrates a microcontrol unit, a wireless communication module, an alarm module, a MEMS acceleration sensor and a GPS positioning module. It senses side panel sliding and chassis movement through an infrared receiver and reflector, and locates and sends alarms in real time. The anti-theft mechanism uses an electromagnetic and locking tongue to achieve automatic locking.
Through a variety of anti-theft technologies, the device greatly improves the anti-theft performance, can monitor and respond to chassis movement and side panel sliding in real time, ensuring hardware safety, and continuously supply power even if power is cut off, and the anti-theft function is effective. Simple installation and does not affect the appearance of the computer.
Smart Images
Figure CN120197238A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of computer security protection, and particularly to a computer hardware anti-theft device and its usage method. Background Technique
[0002] With the increasingly wide range of computer usage scenarios, the risk of computer hardware theft is also constantly increasing. In places with a large flow of people such as office premises, school computer rooms, and Internet cafes, computer hardware often becomes the target of theft. Traditional anti-theft means have many deficiencies in dealing with such theft problems. For example, anti-theft devices for the entire computer cannot accurately protect the internal hardware; existing hardware anti-theft solutions, some rely on complex wiring, which is difficult to install and affects the aesthetics of the computer; some use simple locks, which are easy to crack and difficult to effectively guarantee the hardware security. Summary of the Invention
[0003] The purpose of the present invention is to provide a computer hardware anti-theft device and its usage method to solve the problems raised in the above background technique.
[0004] In view of the above problems, the technical solution proposed by the present invention is:
[0005] A computer hardware anti-theft device, comprising: a chassis, a control mechanism, and an anti-theft mechanism. The chassis includes a box body, and the box body is integrally formed. An installation cavity is formed on the side surface of the box body, and a side plate slides in the installation cavity. The box body being integrally formed ensures that without damaging the box body, only by sliding the side plate can the hardware be taken out from the installation cavity, and the side plate and the box body are fixedly connected by screws; The control mechanism includes a fixing plate installed at the bottom of the installation cavity. A circuit board is provided on the top surface of the fixing plate. The surface of the circuit board is integrated with a micro-control unit, a wireless communication module, an alarm module, a MEMS acceleration sensor, and a GPS positioning module. A power supply module is installed between the fixing plate and the circuit board, and the power supply module supplies power to the circuit board; The anti-theft mechanism includes a lock body installed at the bottom of the installation cavity and a lock catch installed on the side surface of the side plate. The lock body and the lock catch are engaged with each other. The lock body is controlled by the micro-control unit, and the power supply module supplies power to the lock body. The power supply module is internally provided with several lithium batteries. When the chassis is connected to an external power supply, the power supply module is connected to the power supply inside the chassis, so that the lithium batteries inside can be charged. After the chassis is disconnected from the external power supply, the power supply module supplies power to the circuit board, the micro-control unit, the wireless communication module, the alarm module, the MEMS acceleration sensor, the GPS positioning module, and the anti-theft mechanism. When the side plate is slid or the chassis is moved, it will cause the infrared receiver not to receive infrared rays, and the MEMS acceleration sensor will sense the acceleration, thereby sending a signal to the micro-control unit. The micro-control unit sends an alarm to the user's mobile device through the alarm module and the wireless communication module, and real-time locates the position of the chassis through the GPS positioning module and displays the result on the user's mobile device. The user can also send commands to the micro-control unit through the mobile device to cut off the power supply of the power supply module to the circuit board, the micro-control unit, the wireless communication module, the alarm module, the MEMS acceleration sensor, the GPS positioning module, and the anti-theft mechanism.
[0006] As a preferred technical solution of the present invention, the lock body includes a lock sleeve installed at the bottom of the installation cavity. A lock tongue slides inside the lock sleeve, and the lock tongue slides inside the lock catch. An electromagnet is installed on the bottom surface of the lock sleeve. A spring is connected between the electromagnet and the lock tongue. The electromagnet adsorbs the lock tongue. After the chassis is disconnected from the external power supply, the micro-control unit will disconnect the power supply of the power supply module to the electromagnet. At this time, the lock tongue resets under the action of the spring, so it will slide into the lock catch, thereby completing the locking of the side plate and further protecting the hardware inside the box.
[0007] As a preferred technical solution of the present invention, the reflector is U-shaped, and the inner angle of the reflector is an obtuse angle. With this shape of the reflector, the infrared rays can be reflected twice by the reflector and finally reflected onto the infrared receiver.
[0008] As a preferred technical solution of the present invention, an infrared generator and an infrared receiver are integrated on the surface of the circuit board, a reflector is installed on the side surface of the side plate, the infrared receiver receives the infrared rays emitted by the infrared generator reflected by the reflector, the width of the lock tongue is smaller than the inner width of the lock catch. When the chassis is still connected to an external power supply, the electromagnet is in a state of being always powered by the power supply module at this time, and the magnetic force generated by it will adsorb the lock tongue to move downward. At this time, if you want to slide the side plate open, then the reflector will move together with the side plate, and the infrared receiver will gradually not receive the infrared rays reflected by the reflector. When it no longer receives infrared rays, the micro control unit will immediately cut off the power supply of the power supply module to the electromagnet. At this time, the lock tongue will reset under the action of the spring, so it will slide into the lock catch. Because the width of the lock tongue is smaller than the inner width of the lock catch, even if the side plate slides a certain distance, the lock tongue can still slide into the lock catch, thus completing the locking of the side plate, and further protecting the hardware in the box.
[0009] As a preferred technical solution of the present invention, bolts are threadedly engaged between the circuit board and the fixing plate.
[0010] As a preferred technical solution of the present invention, the model of the micro control unit is STM32F407VET6, the model of the GPS positioning module is UBX-NEO-M8N, the model of the wireless communication module is SIM800C, the model of the alarm module is TYWE3S, the model of the MEMS acceleration sensor is MPU6050, the model of the infrared generator is TSAL6200, and the model of the infrared receiver is TSOP34838. As a preferred technical solution of the present invention, a charging management module is provided inside the power supply module, and the model of the charging management module is MP2636.
[0011] On the other hand, the present invention provides a usage method of a computer hardware anti-theft device, including the following steps:
[0012] Step 1: Install the computer hardware in the chassis, fixedly connect the side plate to the box body with screws, and ensure that all components of the control mechanism and the anti-theft mechanism are installed in place and normally connected. Connect the chassis to an external power supply, and the power supply module starts to charge the internal lithium battery and supply power to the circuit board and related modules. At this time, the electromagnet adsorbs the lock tongue to separate the lock tongue from the lock catch, and the side plate can slide normally. At the same time, the infrared generator emits infrared rays, which are received by the infrared receiver after being reflected by the reflector, and the micro control unit confirms that the device is in a normal state.
[0013] Step 2: During the normal use of the chassis, the MEMS acceleration sensor continuously monitors the acceleration change of the chassis to determine whether the chassis is moved; the infrared receiver continuously monitors whether it can receive the infrared rays reflected by the reflector to determine whether the side plate is slid. If the chassis is moved, the MEMS acceleration sensor will sense the acceleration change and send a signal to the micro-control unit; if the side plate is slid, the reflector will move accordingly, and the infrared receiver cannot receive the infrared rays, and it will also send a signal to the micro-control unit; after the chassis is disconnected from the external power supply, the micro-control unit will disconnect the power supply of the electromagnet by the power supply module. At this time, the locking tongue will reset under the action of the spring, so it will slide into the lock buckle, thus completing the locking of the side plate, and further protecting the hardware in the box;
[0014] Step 3: When the micro-control unit receives the abnormal signal sent by the MEMS acceleration sensor or the infrared receiver, it immediately sends an alarm message to the user's mobile device through the alarm module and the wireless communication module to inform that an abnormal situation has occurred in the chassis. At the same time, the GPS positioning module real-time locates the position of the chassis and sends the position information to the user's mobile device through the wireless communication module for display.
[0015] Compared with the prior art, the beneficial effects of the present invention are: the computer hardware anti-theft device and its use method adopt a variety of anti-theft technologies, greatly improving the anti-theft performance. The MEMS acceleration sensor continuously monitors the movement of the chassis. Once the chassis is moved, it immediately sends a signal to the micro-control unit; the infrared generator and receiver cooperate with the reflector to sensitively sense the sliding of the side plate. When an abnormality is detected, the micro-control unit quickly sends an alarm to the user's mobile device through the alarm module and the wireless communication module, and uses the GPS positioning module to real-time locate the position of the chassis, which is convenient for the user to track in time. Even if the chassis is disconnected from the external power supply, the built-in lithium battery of the power supply module continues to supply power to ensure the continuous effectiveness of the anti-theft function; the control mechanism and the anti-theft mechanism are integrated inside the chassis, without the need for additional complex wiring, and the installation process is simple and convenient, and will not affect the overall appearance of the computer, maintaining the beauty of the computer. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional structure schematic diagram of the main body of the computer hardware anti-theft device disclosed in the embodiment of the present invention;
[0017] Figure 2 It is an exploded structure schematic diagram of the computer hardware anti-theft device disclosed in the embodiment of the present invention;
[0018] Figure 3 is Figure 2 The enlarged structure schematic diagram of the A structure in;
[0019] Figure 4 It is a three-dimensional structure schematic diagram of the side plate of the computer hardware anti-theft device disclosed in the embodiment of the present invention;
[0020] Figure 5 is Figure 4 The enlarged structural schematic diagram of structure B in
[0021] Figure 6 is Figure 4 The enlarged structural schematic diagram of structure C in
[0022] Figure 7 The sectional structural schematic diagram of the computer hardware anti-theft device disclosed in the embodiment of the present invention.
[0023] In the figure: 100, chassis; 1001, box body; 1002, side plate; 200, control mechanism; 2001, fixing plate; 2002, circuit board; 2003, bolt; 2004, micro control unit; 2005, wireless communication module; 2006, alarm module; 2007, MEMS acceleration sensor; 2008, GPS positioning module; 2009, infrared generator; 2010, infrared receiver; 2011, power supply module; 2012, reflector; 300, anti-theft mechanism; 3001, lock sleeve; 3002, lock tongue; 3003, electromagnet; 3004, spring; 3005, lock catch. Specific embodiments
[0024] Embodiment 1:
[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0026] Please refer to Figure 1 - Figure 7, the present invention provides a technical solution: a computer hardware anti-theft device and its usage method, including a chassis 100, a control mechanism 200, and an anti-theft mechanism 300. The chassis 100 includes a box body 1001, and the box body 1001 is integrated. An installation cavity is provided on the side of the box body 1001, and a side plate 1002 slides in the installation cavity. The box body 1001 is integrated, so that without damaging the box body 1001, only by sliding the side plate 1002 can the hardware be taken out of the installation cavity, and the side plate 1002 and the box body 1001 are fixedly connected by screws; the control mechanism 200 includes a fixing plate 2001 installed at the bottom of the installation cavity. On the top surface of the fixing plate 2001, there is a circuit board 2002. The surface of the circuit board 2002 is integrated with a micro-control unit 2004, a wireless communication module 2005, an alarm module 2006, a MEMS acceleration sensor 2007, and a GPS positioning module 2008. A power supply module 2011 is installed between the fixing plate 2001 and the circuit board 2002, and the power supply module 2011 supplies power to the circuit board 2002; the anti-theft mechanism 300 includes a lock body installed at the bottom of the installation cavity and a lock catch 3005 installed on the side of the side plate 1002. The lock body and the lock catch 3005 are engaged with each other. The lock body is controlled by the micro-control unit 2004, and the power supply module 2011 supplies power to the lock body. The power supply module 2011 contains several lithium batteries. When the chassis 100 is connected to an external power supply, the power supply module 2011 is connected to the power supply inside the chassis 100, so that the lithium batteries inside can be charged. After the chassis 100 is disconnected from the external power supply, the power supply module 2011 supplies power to the circuit board 2002, the micro-control unit 2004, the wireless communication module 2005, the alarm module 2006, the MEMS acceleration sensor 2007, the GPS positioning module 2008, and the anti-theft mechanism 300. When the side plate 2002 is slid or the chassis 100 is moved, it will cause the infrared receiver 2010 not to receive infrared rays, and the MEMS acceleration sensor 2007 will sense the acceleration, thus sending a signal to the micro-control unit 2004. The micro-control unit 2004 sends an alarm to the user's mobile device through the alarm module 2006 and the wireless communication module 2005, and real-time locates the position of the chassis 100 through the GPS positioning module 2008 and displays the result on the user's mobile device. The user can also send a command to the micro-control unit 2004 through the mobile device to cut off the power supply of the power supply module 2011 to the circuit board 2002, the micro-control unit 2004, the wireless communication module 2005, the alarm module 2006, the MEMS acceleration sensor 2007, the GPS positioning module 2008, and the anti-theft mechanism 300.
[0027] In one embodiment of the present invention, further, the lock body includes a lock sleeve 3001 installed at the bottom of the installation cavity, a lock tongue 3002 slides inside the lock sleeve 3001, and the lock tongue 3002 slides in the lock buckle 3005. An electromagnet 3003 is installed on the bottom surface of the lock sleeve 3001, and a spring 3004 is connected between the electromagnet 3003 and the lock tongue 3002. The electromagnet 3003 absorbs the lock tongue 3002. After the chassis 100 is disconnected from the external power supply, the micro control unit 2004 will disconnect the power supply module 2011 to the electromagnet 3003. At this time, the lock tongue 3002 is reset under the action of the spring 3004, so it will slide into the lock buckle 3005, thereby completing the locking of the side panel 1002, and then protecting the hardware in the box body 1001.
[0028] In one embodiment of the present invention, further, the reflective plate 2012 is U-shaped, and the inner angle of the reflective plate 2012 is an obtuse angle. Through the reflective plate 2012 of this shape, the infrared ray can be reflected twice by the reflective plate 2012 and projected onto the infrared receiver 2010.
[0029] In one embodiment of the present invention, further, the surface of the circuit board 2002 is integrated with an infrared generator 2009 and an infrared receiver 2010, and a reflective plate 2012 is installed on the side of the side plate 1002. The infrared receiver 2010 receives the infrared rays emitted by the infrared generator 2009 reflected by the reflective plate 2012. The width of the lock tongue 3002 is smaller than the inner width of the lock buckle 3005. When the chassis 100 is still connected to an external power supply, the electromagnet 3003 is always powered by the power supply module 2011. The magnetic force generated by the electromagnet 3003 will attract the lock tongue 3002 to move downward. At this time, if you want to slide the side plate 1002 open, the reflective plate 2012 will It will move together with the side panel 1002, and the infrared receiver 2010 will gradually fail to receive the infrared rays reflected by the reflective plate 2012. When it no longer receives the infrared rays, the micro control unit 2004 will immediately disconnect the power supply module 2011 to the electromagnet 3003. At this time, the lock tongue 3002 will reset under the action of the spring 3004, so it will slide into the lock buckle 3005. Because the width of the lock tongue 3002 is smaller than the inner width of the lock buckle 3005, even if the side panel 1002 slides a distance, the lock tongue 3002 can still slide into the lock buckle 3005, thereby completing the locking of the side panel 1002, thereby protecting the hardware in the box body 1001.
[0030] In one embodiment of the present invention, further, a bolt 2003 is threadedly engaged between the circuit board 2002 and the fixing plate 2001 .
[0031] In an embodiment of the present invention, further, the model of the microcontroller unit 2004 is STM32F407VET6, the model of the GPS positioning module 2008 is UBX-NEO-M8N, the model of the wireless communication module 2005 is SIM800C, the model of the alarm module 2006 is TYWE3S, the model of the MEMS acceleration sensor 2007 is MPU6050, the model of the infrared generator 2009 is TSAL6200, and the model of the infrared receiver 2010 is TSOP34838. In an embodiment of the present invention, further, the power supply module 2011 is internally provided with a charging management module, and the model of the charging management module is MP2636.
[0032] Embodiment 2:
[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0034] First, the computer hardware anti-theft device is applied in the computer room of a certain university. The specific implementation process is as follows. Please refer to Figure 1 - Figure 7 , the present invention provides a technical solution: a computer hardware anti-theft device and its usage method, including the following steps:
[0035] Installation and debugging: The computer room administrator installs the computer hardware in the chassis 100 equipped with this anti-theft device. After installing various hardware components, such as hard disks, memories, graphics cards, etc., according to the normal computer installation process, the side plate 1002 is fixedly connected to the box body 1001 with screws. Then, the external power supply is connected to the chassis 100, and the power supply module 2011 starts to charge the internal lithium battery and supply power to the circuit board 2002 and related modules. At this time, the electromagnet 3003 adsorbs the lock tongue 3002, separating the lock tongue 3002 from the lock catch 3005, and the side plate 1002 can slide normally. At the same time, the infrared generator 2009 emits infrared rays, which are reflected by the reflector 2012 on the side of the side plate 1002 and received by the infrared receiver 2010. The microcontroller unit 2004 confirms that the device is in a normal state. The administrator pre-sets the parameters of the wireless communication module 2005 corresponding to his own mobile phone in the microcontroller unit 2004 to ensure that the abnormal alarm can be accurately sent to his own mobile phone.
[0036] Daily use monitoring: During normal use of the computer room, the MEMS acceleration sensor 2007 continuously monitors the acceleration changes of the chassis 100 to determine whether the chassis is moved; the infrared receiver 2010 continuously monitors whether it can receive infrared rays reflected by the reflective plate 2012 to determine whether the side panel 1002 is slid. One day, when a student was using a computer in a computer room, he wanted to open the computer case out of curiosity to check the internal hardware. When he tried to unscrew the side panel screws and slide the side panel, the reflector 1002 moved accordingly. The infrared receiver 2010 could not receive infrared rays and immediately sent a signal to the micro control unit 2004. The micro control unit 2004 would immediately disconnect the power supply module 2011 to the electromagnet 3003. At this time, the lock tongue 3002 would reset under the action of the spring 3004 and would slide into the lock buckle 3005. Since the width of the lock tongue 3002 is smaller than the inner width of the lock buckle 3005, even if the side panel 1002 slides for a distance, the lock tongue 3002 can still slide into the lock buckle 3005, thereby completing the locking of the side panel 1002 and protecting the hardware in the box 1001.
[0037] Abnormal situation response: After receiving the abnormal signal sent by the infrared receiver 2010, the micro control unit 2004 immediately sends an alarm message to the mobile phone of the computer room manager through the alarm module 2006 and the wireless communication module 2005, informing that an abnormal situation has occurred in a certain chassis 100. At the same time, the GPS positioning module 2008 locates the position of the chassis 100 in real time, and sends the position information to the mobile phone of the manager for display through the wireless communication module 2005. After receiving the alarm, the manager immediately checks the mobile phone to find out the position of the abnormal chassis, and quickly rushes to the computer room to stop the student's improper behavior.
[0038] Power-off protection mechanism: In a campus power outage, the chassis 100 is disconnected from the external power supply. At this time, the micro-control unit 2004 will disconnect the power supply module 2011 to the electromagnet 3003. The lock tongue 3002 will reset under the action of the spring 3004 and slide into the lock buckle 3005, thereby completing the locking of the side panel 1002 and protecting the hardware in the box 1001. Even in the power outage state, the built-in lithium battery of the power supply module 2011 continues to supply power to the circuit board 2002, the micro-control unit 2004, the wireless communication module 2005, the alarm module 2006, the MEMS acceleration sensor 2007, and the GPS positioning module 2008, ensuring that the anti-theft function remains effective and preventing someone from stealing the hardware.
Claims
1. A computer hardware anti-theft device, characterized in that: include: A chassis (100), the chassis (100) comprising a box body (1001), the box body (1001) being of an integrated type, a mounting cavity being provided on a side of the box body (1001), a side panel (1002) sliding in the mounting cavity, and the side panel (1002) and the box body (1001) being fixedly connected by screws; A control mechanism (200), the control mechanism (200) comprising a fixing plate (2001) mounted at the bottom of the mounting cavity, a circuit board (2002) being provided on the top surface of the fixing plate (2001), a micro control unit (2004), a wireless communication module (2005), an alarm module (2006), a MEMS acceleration sensor (2007), a GPS positioning module (2008), an infrared generator (2009), and an infrared receiver (2010) being integrated on the surface of the circuit board (2002), a reflecting plate (2012) being mounted on the side surface of the side plate (1002), the infrared receiver (2010) receiving infrared rays emitted by the infrared generator (2009) reflected by the reflecting plate (2012), a power supply module (2011) being mounted between the fixing plate (2001) and the circuit board (2002), the power supply module (2011) supplying power to the circuit board (2002); The anti-theft mechanism (300) comprises a lock body installed at the bottom of the installation cavity and a lock buckle (3005) installed on the side of the side plate (1002); the lock body and the lock buckle (3005) are engaged with each other, the lock body is controlled by the micro control unit (2004), and the power supply module (2011) supplies power to the lock body.
2. A computer hardware anti-theft device according to claim 1, characterized in that: The lock body comprises a lock sleeve (3001) installed at the bottom of the installation cavity, a lock tongue (3002) is slidably arranged inside the lock sleeve (3001), the lock tongue (3002) slides in the lock buckle (3005), an electromagnet (3003) is installed on the bottom surface of the lock sleeve (3001), a spring (3004) is connected between the electromagnet (3003) and the lock tongue (3002), and the electromagnet (3003) adsorbs the lock tongue (3002).
3. A computer hardware anti-theft device according to claim 1, characterized in that: The reflective plate (2012) is U-shaped, and the inner angle of the reflective plate (2012) is an obtuse angle.
4. A computer hardware anti-theft device according to claim 1, characterized in that: The width of the locking tongue (3002) is smaller than the inner width of the locking buckle (3005).
5. A computer hardware anti-theft device according to claim 1, characterized in that: The circuit board (2002) and the fixing plate (2001) are threadedly engaged with bolts (2003).
6. A computer hardware anti-theft device according to claim 1, characterized in that: The model of the microcontroller unit (2004) is STM32F407VET6, the model of the GPS positioning module (2008) is UBX-NEO-M8N, the model of the wireless communication module (2005) is SIM800C, the model of the alarm module (2006) is TYWE3S, the model of the MEMS acceleration sensor (2007) is MPU6050, the model of the infrared generator (2009) is TSAL6200, and the model of the infrared receiver (2010) is TSOP34838.
7. A computer hardware anti-theft device according to claim 1, characterized in that: The power supply module (2011) has a plurality of lithium batteries built in, and a charging management module is provided inside the power supply module, and the model of the charging management module is MP2636.
8. A method for using a computer hardware anti-theft device, as applied to a computer hardware anti-theft device according to claims 1-7, characterized in that: The following steps are involved: Step 1: Install the computer hardware in the case (100), and fix the side panel (1002) to the case (1001) with screws to ensure that the components of the control mechanism (200) and the anti-theft mechanism (300) are installed in place and connected normally. Connect the case (100) to an external power source, and the power supply module (2011) starts to charge the internal lithium battery and supply power to the circuit board (2002) and related modules. At this time, the electromagnet (3003) absorbs the lock tongue (3002), so that the lock tongue (3002) is separated from the lock buckle (3005), and the side panel (1002) can slide normally. At the same time, the infrared generator (2009) emits infrared rays, which are reflected by the reflective plate (2012) and received by the infrared receiver (2010), and the micro control unit (2004) confirms that the device is in a normal state. Step 2: During normal use of the chassis (100), the MEMS acceleration sensor (2007) continuously monitors the acceleration change of the chassis (100) to determine whether the chassis is moved; the infrared receiver (2010) continuously monitors whether it can receive infrared rays reflected by the reflection plate (2012) to determine whether the side panel (1002) is slid. If the chassis (100) is moved, the MEMS acceleration sensor (2007) will sense the acceleration change and send a signal to the micro control unit (2004); if the side panel (1002) is slid, the reflective plate (1002) will move accordingly, and the infrared receiver (2010) will not receive infrared rays and will also send a signal to the micro control unit (2004); after the chassis (100) is disconnected from the external power supply, the micro control unit (2004) will disconnect the power supply module (2011) to the electromagnet (3003), and at this time the lock tongue (3002) will reset under the action of the spring (3004), so it will slide into the lock buckle (3005), thereby completing the locking of the side panel (1002), thereby protecting the hardware in the box body (1001); Step 3: When the microcontroller unit (2004) receives an abnormal signal sent by the MEMS acceleration sensor (2007) or the infrared receiver (2010), it immediately sends an alarm message to the user's mobile device through the alarm module (2006) and the wireless communication module (2005), notifying the user that the chassis (100) has an abnormal situation. At the same time, the GPS positioning module (2008) locates the position of the chassis (100) in real time, and sends the position information to the user's mobile device for display through the wireless communication module (2005).