Anti-theft system

Abstract

To improve convenience of a user.SOLUTION: A first communication device and a second communication device are wire-connected by a cable, the first communication device is installed in a place with high security, the second communication device is installed inside a theft prevention object, and alert output can be performed to both the first communication device and the second communication device. As a result, it is possible to enhance the effect of theft prevention by preventing the release of the theft prevention device using communication interception or hacking and ensuring that an alert is output from the first communication device having a high security level when a theft occurs.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an anti-theft system for preventing theft of, for example, automobiles. [Background technology]

[0002] In recent years, the number of car thefts has been increasing, and accordingly, the security of cars has been improved. For example, a method has been proposed in which an alarm is output if the charging cable is not unplugged after the correct operation (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-211465 Summary of the Invention [Problem to be solved by the invention]

[0004] However, such an anti-theft system can only be applied to cars that can be charged, which has the problem of being inconvenient for users.

[0005] The present invention has been made to solve such problems, and its object is to provide an anti-theft system that can improve user convenience. [Means for solving the problem]

[0006] In order to solve the above problem, the present invention provides an anti-theft system having a first communication device, a second communication device, and a cable connecting the first communication device and the second communication device, the first communication device, a power acquisition unit that acquires power from a power source; a first communication unit that supplies power and an electrical signal to the second communication device through the cable and receives an electrical signal from the second communication device when the device is in an alert mode; a first alert output unit that outputs an alert when communication between the first and second communication units is interrupted in the alert mode; the second communication device, a second communication unit that receives an electrical signal supplied from the first communication device and supplies the electrical signal to the first communication device when the device is in an alert mode; A battery that stores power supplied from the first communication device; a second alert output unit that outputs an alert when communication between the first and second communication units is interrupted in the alert mode; and a circular loop portion. installed in either the first communication device or the second communication device, an operation input unit that accepts a start operation and a release operation by a user; The communication device is characterized by having a control unit that transitions to an alert mode in response to the start operation, transitions to a release mode in response to the release operation, transitions from the alert mode to the release mode in response to the release operation, and stops communication between the first communication device and the second communication device. [Effects of the Invention]

[0007] The present invention can realize an anti-theft system that can improve user convenience. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic diagram showing an outline (1) of an anti-theft system according to a first embodiment. [Figure 2] 1 is a schematic diagram illustrating a configuration of an anti-theft system according to a first embodiment. [Figure 3] 2 is a schematic block diagram showing the electrical configuration of the anti-theft system according to the first embodiment. FIG. [Figure 4]10 is a flowchart showing a procedure of an anti-theft process according to the first embodiment. [Figure 5] FIG. 10 is a schematic diagram illustrating the configuration of an anti-theft system according to a second embodiment. [Figure 6] FIG. 10 is a schematic block diagram showing the electrical configuration of an anti-theft system according to a second embodiment. [Figure 7] 10 is a flowchart showing a procedure of an anti-theft process according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] First Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

[0010] 1 shows an entire anti-theft system 1. The anti-theft system 1 includes a first communication device 11, a second communication device 20, and a cable 30 that connects the first communication device 11 and the second communication device 20 by wire.

[0011] The first communication device 11 is assumed to be installed in a secure location, such as inside a building such as a house or inside a fixed, locked box. On the other hand, the second communication device 20 is assumed to be attached to an object to be protected from theft, such as an automobile, a boat, or a bicycle. Here, a case where an automobile is parked in a parking lot at home will be described.

[0012] 2, the first communication device 11 has an operation unit 12 and a power acquisition unit 13 configured as an outlet. The operation unit 12 can input user operations using physical buttons, a touch sensor, or the like.

[0013] The second communication device 20 has a circular loop portion 21. One end of this loop portion 21 can transition between a detached state where it is detached from the second communication device 20 and a set state where it is installed, and the other end is fixed to the second communication device 20. The loop portion 21 is designed to be attached to a closed object that is to be anti-theft, such as a car handle or a bicycle tire.

[0014] The communication control unit 26 monitors the state of the loop unit 21 (set state or detached state) based on, for example, whether or not power is being supplied.

[0015] The cable 30 is fixed to the second communication device 20, while the other end is detachable, and a connector 32 installed at the tip is designed to be inserted into the socket 14 of the first communication device 11. The cable 30 also has a reel 31, so that the length of the cable 30 can be adjusted. There are no restrictions on the material of the cable 30, but a flat wire is preferably used so that it can pass through gaps such as doors.

[0016] When the connector 32 of the cable 30 is inserted into the socket 14 of the first communication device 11, as shown in FIG. 3, current flows from the socket 14 to the communication control unit 16, causing the communication control unit 16 to recognize the insertion of the connector 32 into the socket 14.

[0017] The communication control unit 16 recognizes the insertion of the connector 32 as an initiation action by the user, and transitions to an alert mode to supply an electrical signal to the second communication device 20.

[0018] When the communication control unit 26 of the second communication device 20 receives the electrical signal, it transmits a response electrical signal. This exchange of electrical signals is performed at predetermined communication intervals (for example, every 0.01 to 0.2 seconds).

[0019] The second communication device 20 has a battery 28, and receives the electric signal supplied from the first communication device 11 as well as power supply and stores the power.

[0020] When the abnormality detection signal is supplied from the communication control unit 16, the alert output unit 17 of the first communication device 11 executes an alarm process and outputs a loud alert sound.

[0021] Similarly, the alert output unit 27 of the second communication device 20 executes warning processing and outputs a loud alert sound when an abnormality detection signal is supplied from the communication control unit 226.

[0022] That is, when the user places the object to be stolen in a location such as a parking lot, the user attaches the loop portion 21 of the second communication device 20 to a handle or the like and sets it up. The user holds the tip (connector 32) of the cable 30 and enters their home, and inserts the connector 32 into the socket 14 of the first communication device 11 installed near the entrance.

[0023] As a result, the anti-theft system 1 transitions to the alert mode, and mutual communication is performed between the first communication device 11 and the second communication device 20. If the loop unit 21 transitions to the detached state while mutual communication is being performed in the alert mode, the communication control unit 26 executes an alarm process, and the alert output unit 27 generates an alert sound.

[0024] The communication control unit 26 transmits an abnormality detection signal to the first communication device 11. The communication control unit 16 executes an alarm process and causes the alert output unit 17 to generate an alert sound.

[0025] Furthermore, in the alert mode, if mutual communication is interrupted for the alert time (for example, three to five times the communication interval), the alert process is similarly executed.

[0026] The communication control unit 26 monitors the open / closed state of the loop unit 21, and when the loop unit 21 is in the open state in the alert mode, it supplies an abnormality signal to the communication control unit 16. As a result, an alert is output from the alert output units 17 and 27 as a warning process.

[0027] To stop this alarm process, the only way is to unplug the power acquisition unit 13 or perform a specific operation on the operation unit 12. In other words, a physical operation on the first communication device 11 side is required.

[0028] When the user operates the operation unit 12 of the first communication device 11 in their home, for example by pressing a button, the anti-theft system 1 transitions to the deactivation mode. The user then unplugs the connector 32 from the socket 14, retrieves the cable 30, and heads to their car, where they leave the second communication device 20.

[0029] In this way, the anti-theft system 1 connects the inside of the car and the inside of the home with a wired cable 30, and if an abnormality is detected, an alarm is sounded from both the home and the car. As a result, even if the cable 30 is cut or the second communication device 20 is destroyed, the user can be notified of the theft by the alarm from the first communication device 11 inside the home.

[0030] Next, the anti-theft processing procedure RT1 executed by the anti-theft system 1 will be described with reference to the flowchart of FIG.

[0031] The communication control unit 16 of the first communication device 11 in the theft prevention system 1 proceeds to step S11 and waits for the insertion of the connector 32 as a user's initial action, and when the insertion of the connector 32 is detected, proceeds to the next step S12.

[0032] In step S12, the communication control unit 16 monitors the mutual communication between the first communication device 11 and the second communication device 20, and determines whether or not there are any abnormalities such as communication being cut off or an abnormal signal being supplied. If a negative result is obtained here, this indicates that an abnormality has occurred, that is, there is a possibility of theft, so the communication control unit 16 proceeds to step S14 and executes alarm processing.

[0033] On the other hand, if a positive result is obtained in step S13, the communication control unit 16 proceeds to the next step S15. In step S15, the communication control unit 16 determines whether or not the user has operated the operation unit 12 as a cancellation action. If a negative result is obtained here, the communication control unit 16 returns to step S13 and continues communication and communication monitoring.

[0034] On the other hand, if a positive result is obtained in step S16, this indicates that the user has performed a cancellation action, and in this case the communication control unit 16 proceeds to the next step S16.

[0035] In step S16, the communication control unit 16 transitions to the release mode and stops the mutual communication, which results in the second communication device 20 also ending monitoring of the loop unit 21.

[0036] In this way, by installing the first communication device 11 in a home with strong security, even if the second communication device 20 is destroyed or the cable 30 is cut, the first communication device 11 in the home with high security can output an alert to notify the user in the home, making it possible to respond quickly to the theft.

[0037] Furthermore, since the first communication device 11 does not have a means of wireless communication to the outside, it cannot be remotely controlled by hacking or the like, and the anti-theft system 1 cannot be physically shut down unless someone breaks into the home, so the home security system can be used as part of the anti-theft system 1.

[0038] <Second embodiment> Next, a second embodiment will be described with reference to Figures 5 to 7. The second embodiment differs from the first embodiment in that the loop unit is a loop lock and that the transition to the alert mode is executed on the side of the second communication device 200. In the second embodiment, parts that are the same as or correspond to those in the first embodiment are given reference numerals with 100 added, and descriptions of the same parts will be omitted.

[0039] The anti-theft system 101 of the second embodiment is a form that can be used by an unspecified number of users, and the first communication device 111 is fixed underground and is installed in a state of increased security by being attached to an underground fixed object that cannot be easily removed, such as a number reader, a coin settlement machine, a fixed bar, an anchor, etc., or by being buried in the ground in advance.

[0040] Here, we will explain the case where the vehicle is used in a pay-by-the-hour parking lot, such as a coin parking lot, where anyone can park temporarily.

[0041] As shown in FIG. 5, the first communication device 111 is fixed to an underground fixed object 199 (a license plate reader in the figure) in a pay parking lot, and anyone can install the second communication device 120 in their car.

[0042] As shown in FIG. 6, the first communication device 111 has a power acquisition unit 113, a communication unit 116, and an alert output unit 117, and starts communication in response to an electrical signal from the communication unit 126 of the second communication device 200, and supplies power and the electrical signal to the communication unit 126.

[0043] The second communication device 200 is configured such that a control unit 123 consisting of an MPU (Micro Processing Unit), ROM (Read Only Memory) and RAM (Random Access Memory) controls the entire second communication device 200 and executes anti-theft processing in accordance with an anti-theft program pre-stored in the ROM.

[0044] Specifically, the user enters an automobile (not shown) with second communication device 200, separates one end of loop portion 121 from the main body of second communication device 200, hooks it onto a steering wheel or the like, and returns the end of loop portion 121 to the main body of second communication device 200. This loop portion 121 is a loop lock with a key configuration. At this time, loop portion 121 is closed but unlocked.

[0045] When the user operates operation unit 122, control unit 123 outputs a sound from audio output unit 127 prompting the user to register authentication information, starts communication by short-range communication unit 129, and waits for the user to supply authentication information.

[0046] The short-distance communication unit 129 uses so-called NFC (Near Field Communication), which allows communication only within a short distance, such as within 50 cm, and cannot be intercepted from the outside. To reliably prevent interception, it is preferable to set the radio wave strength so that communication is only possible within 10 cm. As authentication information, it is possible to register one's own transportation IC (integrated circuit) card or credit card.

[0047] When the user brings a card or a smartphone close to second communication device 200, short-range communication unit 129 transmits information obtained by short-range communication to authentication unit 124. Authentication unit 124 registers the information as authentication information.

[0048] When the registration of the authentication information is completed, the control unit 123 transitions to an alert mode and causes the loop unlocking unit 125 to lock the loop unit 121. Then, the audio output unit 127 outputs a message that the registration of the authentication information and the locking have been completed, and the communication unit 126 starts mutual communication with the communication unit 116. If an abnormality is detected, an alert is output from the audio output unit 127.

[0049] When the user wants to move the car out of the parking lot, the user operates the operation unit 122. When a release request signal is supplied from the operation unit 122, the control unit 123 starts communication by the short-range communication unit 129 and waits for the user to supply authentication information.

[0050] When the user brings a registered card or smartphone close to second communication device 200, short-range communication unit 129 transmits information obtained by short-range communication to authentication unit 124. Authentication unit 124 compares the registered authentication information with the supplied information.

[0051] If the result of the comparison shows that the authentication information does not match the supplied information, the control unit 123 maintains the alert mode, transmits the comparison result from the audio output unit 127, and outputs audio urging the user to start the operation over from the beginning.

[0052] On the other hand, if the result of the comparison shows that the authentication information matches the supplied information, the control unit 123 transitions to the release mode, transmits the comparison result from the audio output unit 127, and unlocks the loop unit 121 by the loop unlocking unit 125. The control unit 123 also erases the authentication information in the authentication unit 124 and outputs an audio message to the effect that the authentication information has been deleted.

[0053] As a result, the user can remove the second communication device 200 from the car, and place the second communication device 200 near the first communication device 111 while winding the cable 302 by the reel part 131.

[0054] In this way, the anti-theft system 101 uses short-range communication and one-time authentication, and deletes authentication information each time the door is unlocked, thereby preventing theft of the user's authentication information itself and improving the security of the anti-theft system 101.

[0055] Furthermore, since the authentication information is registered in one time, it can be used by a large number of users, and the authentication information does not need to be left in the second communication device 200, so the authentication information will not be stolen when not in use, improving security.

[0056] Next, the anti-theft processing procedure RT2 executed by the anti-theft system 1 in accordance with the anti-theft program will be described with reference to the flowchart of FIG.

[0057] The control unit 123 of the second communication device 120 starts the theft prevention process, enters step S21 and waits for a user operation, and when an operation on the operation unit 122 is detected, moves to the next step S22.

[0058] In step S23, the control unit 123 transitions to the registration mode, starts communication by the short-range communication unit 129, waits for the user's authentication information to be supplied, and proceeds to the next step S23.

[0059] In step S23, the control unit 123 determines whether or not the user authentication information has been acquired. If the user authentication information cannot be acquired within the authentication waiting time (for example, 5 to 10 seconds), this indicates that the authentication information has not been registered, and the control unit 123 then proceeds to the next step S24.

[0060] In step S24, the control unit 123 outputs a voice message such as "Registration is not complete. Please register your IC card." as an error notification process, and the process returns to step S21 to wait for an operation on the operation unit 122.

[0061] On the other hand, if a positive result is obtained in step S23, this indicates that authentication information has been obtained, and in this case the control unit 123 proceeds to step S26, registers the authentication information, transitions to alert mode, and proceeds to the next step S27.

[0062] In step S27, the control unit 123 monitors the mutual communication between the communication units 116 and 126 and determines whether the mutual communication is normal. If a negative result is obtained here, this indicates a high risk of theft, and the control unit 123 then proceeds to the next step S28.

[0063] In step S28, the control unit 123 executes warning processing such as sounding a loud alert sound for a predetermined warning time (for example, 10 minutes), and then proceeds to an end step to end the processing.

[0064] On the other hand, if a positive result is obtained in step S27, this indicates that no theft has occurred, and in this case the control unit 123 proceeds to the next step S30.

[0065] In step S30, the control unit 123 waits for a user operation on the operation unit 122 and determines whether or not the operation has been performed. If a negative result is obtained here, this indicates that the user has not returned and the alert mode should be continued, and in this case the control unit 123 returns to step S27 and continues monitoring the mutual communication.

[0066] On the other hand, if a positive result is obtained in step S30, this indicates that the user may have returned, and in this case the control unit 123 proceeds to the next step S31.

[0067] In step S31, the control unit 123 transitions to an authentication mode, transitions to a registration mode, starts communication by the short-range communication unit 129, waits for the user's IC information to be supplied, and proceeds to the next step S32.

[0068] In step S32, the control unit 123 compares the acquired IC information with the registered authentication information and determines whether or not they match.

[0069] If a negative result is obtained here, this indicates that there is a possibility that someone other than the user, including a thief, is operating the device, and in this case, the control unit 123 continues the alert mode and continues monitoring mutual communications.

[0070] On the other hand, if a positive result is obtained in step S32, this indicates that the user has returned, and in this case the control unit 123 proceeds to the next step S33, transitions to the unlock mode, unlocks the loop unit 121, and proceeds to the next step S33.

[0071] In step S34, the control unit 123 deletes the authentication information registered in the authentication unit 124, and then proceeds to the end step to end the process.

[0072] <Actions and effects> The following describes the features of the inventions extracted from the above-described embodiments, while indicating problems and effects as necessary. Note that, for ease of understanding, corresponding configurations in the above-described embodiments are indicated in parentheses as appropriate, but the specific configurations indicated in parentheses are not limited to these. Furthermore, the meanings and examples of terms described in each feature may also be applied as the meanings and examples of terms described in other features described in the same wording.

[0073] In the above configuration, the anti-theft system of the present invention (anti-theft system 1, 101) is An anti-theft system having a first communication device (first communication device 11, 111) and a second communication device (second communication device 20, 120), and a cable (cable 30, 130) connecting the first communication device and the second communication device, the first communication device, a power acquisition unit (power acquisition unit 13, 113) that acquires power from a power source; a first communication unit (communication control unit 16, communication unit 116) that supplies power and an electrical signal to the second communication device via the cable and receives an electrical signal from the second communication device when the device is in an alert mode; a first alert output unit (alert output unit 17, 117) that outputs an alert when communication between the first and second communication units is interrupted in the alert mode; the second communication device, a second communication unit (communication control unit 26, communication unit 126) that receives an electrical signal supplied from the first communication device and supplies an electrical signal to the first communication device when in the alert mode; a battery (28, 128) that stores power supplied from the first communication device; a second alert output unit (alert output unit 27, audio output unit 127) that outputs an alert when communication between the first and second communication units is interrupted in the alert mode; and a circular loop portion (loop portion 21, 121), installed in either the first communication device or the second communication device, an operation input unit (operation unit 12, 122) that accepts a start operation and a release operation by a user; The communication device is characterized by having a control unit (communication control unit 16, control unit 123) that transitions to an alert mode in response to the start operation, transitions to a release mode in response to the release operation, transitions from the alert mode to the release mode in response to the release operation, and stops communication between the first communication device and the second communication device.

[0074] This physically connects the first communication device and the second communication device, making it clear to the thief that an anti-theft system has been installed, which can exert psychological pressure. It is also possible to make the thief take more time by hiding the second communication device, for example, under a seat. In this way, the presence of an anti-theft system can make the thief hesitate to steal the item being protected from theft.

[0075] In the anti-theft system, the loop portion It is a loop lock, The control unit When the alarm mode is entered, the loop lock is locked. When the mode is changed to the release mode, the loop lock is unlocked.

[0076] This adds an extra step of unlocking the loop lock due to the presence of the loop lock, thereby improving security.

[0077] In the theft prevention system, the loop unlocking unit, the operation input unit, and the control unit are installed in the first communication device, The control unit The operation on the operation input unit is regarded as the release operation, and the mode is transitioned to the release mode. It is characterized by:

[0078] This allows the release operation to be a one-step operation, allowing the user to easily perform the release operation.

[0079] In the anti-theft system, the cable configured to be detachable from the first communication device, The control unit The operation of inserting the cable is regarded as the start operation, and the mode is transitioned to the alert mode.

[0080] This allows a one-step operation to be the starting operation, allowing the user to easily perform the starting operation.

[0081] In the theft prevention system, the loop unlocking unit, the operation input unit, and the control unit are installed in the second communication device, the second communication device, an authentication unit that authenticates a user in response to an operation on the operation input unit; The control unit When the user is authenticated, the mode is changed to the release mode.

[0082] This allows authentication of the second communication device to be initiated and used as an unlocking condition. That is, by registering the user's authentication information as the start operation of the security mode and verifying the authentication information as the release operation, it is possible to transition to the security mode or the release mode by operating the second communication device 200.

[0083] The authentication unit In response to an operation on the operation input unit, information held by an item capable of short-range communication held by the user is registered as user authentication information, and when the mode transitions to the release mode, the registered user authentication information is erased.

[0084] This allows for one-time user authentication through one-time user registration, making it difficult to steal authentication information and improving security.

[0085] In addition, it has a loop monitoring unit (communication control unit 26) that monitors the open / closed state of the loop unit (loop unit 21), and when the loop unit is in an open state in the alert mode, an alert is output from the alert output unit.

[0086] This allows an alert to be output even if an abnormality occurs in the loop section.

[0087] <Other embodiments> The configurations of the first and second embodiments described above can be combined as appropriate. For example, the loop unit 21 of the first embodiment can be used as a loop lock that can be remotely unlocked from the first communication device, or the first communication device 211 can be provided with an authentication function instead of the second communication device 220.

[0088] In the second embodiment, the loop lock is locked and unlocked by the loop unlocking unit 125, but the present invention is not limited to this. For example, the loop lock may be locked by a user operation, and only the loop unlocking unit may unlock it.

[0089] In the second embodiment described above, short-range communication is used as a method for acquiring authentication information from a user, but it is also possible to read an IC chip or the like using a contact method, or to read an image using image recognition or the like.

[0090] In the above embodiment, a case where a loud alert is output as the alarm processing has been described. However, the present invention is not limited to this, and for example, in addition to the alert, it is also possible to notify a user's smartphone or a security company. [Industrial Applicability]

[0091] The present invention can be applied to an anti-theft system for a mobile object such as an automobile that utilizes a security system for a building such as a company or home. [Explanation of symbols]

[0092] 1,101: Anti-theft system 11,111: First communication device 12,122 :Operation unit 13, 113: Power acquisition section 14: Outlet 16: Communication control section 17: Alert output section 20,120: Second communication device 21,121: Loop section 22:Operation section 26: Communication control section 27: Alert output section 28,128: Battery 30,130: Cable 31,131: Reel 32: Connector 33: Step 123: Control unit 124: Authentication section 125: Loop unlocking part 126: Communications Department 127: Audio output section 129: Near field communication department 199: Underground fixed object

Claims

1. An anti-theft system having a first communication device, a second communication device, and a cable connecting the first communication device and the second communication device, the first communication device, a power acquisition unit that acquires power from a power source; a first communication unit that supplies power and an electrical signal to the second communication device through the cable and receives an electrical signal from the second communication device when the device is in an alert mode; a first alert output unit that outputs an alert when communication between the first and second communication units is interrupted in the alert mode; the second communication device a second communication unit that receives an electrical signal supplied from the first communication device and supplies the electrical signal to the first communication device when the device is in the alert mode; a battery that stores power supplied from the first communication device; a second alert output unit that outputs an alert when communication between the first and second communication units is interrupted in the alert mode; and a circular loop portion. installed in either the first communication device or the second communication device, an operation input unit that accepts a start operation and a release operation by a user; a control unit that transitions to the alert mode in response to the start operation, transitions to the release mode in response to the release operation, transitions from the alert mode to the release mode in response to the release operation, and stops communication between the first communication device and the second communication device; 1. An anti-theft system comprising:

2. The loop portion is It is a loop lock, The control unit When the alarm mode is entered, the loop lock is locked. When the mode is changed to the unlock mode, the loop lock is unlocked.

2. The anti-theft system according to claim 1.

3. The loop portion unlocking unit, the operation input unit, and the control unit are installed in the first communication device, The cable configured to be detachable from the first communication device, The control unit The operation of inserting the cable is regarded as a start operation, and the device transitions to the alert mode.

3. The anti-theft system according to claim 1 or 2.

4. The control unit The operation on the operation input unit is regarded as the release operation, and the mode is transitioned to the release mode.

4. The anti-theft system according to claim 3.

5. The loop portion unlocking unit, the operation input unit, and the control unit are installed in the second communication device, the second communication device an authentication unit that authenticates a user in response to an operation on the operation input unit; The control unit When the user is authenticated, the device transitions to the release mode.

3. The anti-theft system according to claim 1 or 2.

6. The authentication unit In response to an operation on the operation input unit, information held by a short-distance communication-capable item held by the user is registered as user authentication information, and when the mode transitions to the release mode, the registered user authentication information is erased.

6. The anti-theft system according to claim 5.

7. A loop monitoring unit monitors the open / closed state of the loop unit, and when the loop unit is in the open state in the alert mode, an abnormality signal is sent to the control unit.

2. The anti-theft system according to claim 1.

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