TWI734568B - Vehicle equipment seal - Google Patents

Abstract

The present invention is a vehicle equipment seal, which includes a lock body and a latch connected by a connecting element, wherein the lock body has a latch holder, a signal reader adjacent to the pin holder and a microcontroller, and the latch is provided with a security chip at the top end and a sensing antenna connected to the security chip at the bottom end. When the latch is inserted into the lock body, a tenon in the lock body moves to limit the displacement of the latch, and the signal reader reads the information sent by the security chip through the sensing antenna, and the microcontroller performs security verification. According to this, the vehicle equipment seal of the present invention provides a verification mechanism for the wireless transmission.

Description

Car machine seal

The invention relates to an electronic lock, especially a car machine seal.

The cargo transportation industry is very important for how to ensure the safe delivery of the goods. Generally speaking, the consignor and the forwarder will set the transportation specifications, and in order to ensure the safety of the goods transportation process, such as locking, sealing, etc. Be preserved. For example, goods are usually transported by container trucks or bonded trucks. In order to prevent the goods from being stolen or dropped during the transportation process, they are always on the door of the container truck or bonded truck in the early days. With the seal, the integrity of the seal is used to presume that the goods are indeed being transported. However, the traditional seal is easy to be forged, so the traditional seal has a high degree of risk.

The seals used in the early days have now been replaced by electronic seals. Common electronic seals transmit signals through the radio frequency identification chip. The staff can read the data of the radio frequency identification chip in the electronic seal through the reader, and they can immediately know the bond Information about the cargo in the truck, and the electronic seal usually has an anti-vandal warning mechanism. This ensures that the container door of the container truck or bonded truck has not been opened, and provides protection for both the consignor and the transporter for the delivery of the cargo. However, the unlocking of this type of electronic seal usually requires a key to open, which is inconvenient to use. Moreover, this type of electronic seal is usually based on whether there is electrical contact between the plug and the lock body. If it is touched, there may be damage to the components and poor contact. If the lock cannot be unlocked, it may cause more usage problems.

In view of this, how to provide an electronic lock, especially for the locking of the container door of a container truck or a bonded truck, in addition to taking into account the safety and anti-counterfeiting of the lock, at the same time, it should be able to avoid the possibility of electronic components being affected by the use of electronic components. The problem of damage or poor induction will become the goal pursued by those skilled in the art.

In order to solve the above-mentioned problems of the prior art, the present invention discloses a car machine seal, which includes: a seal body with a pin seat, a signal reader and a microcontroller adjacent to the pin seat; and a seal pin through which the top end A connecting element is connected to the seal body, the seal pin is provided with a security chip at the top end and an induction antenna connected to the security chip is provided at the bottom end of the seal pin, wherein the seal pin is inserted into the seal body to When the pin seat, move the pin latch in the seal body to limit the displacement of the seal pin, and make the signal reader read the message sent by the security chip through the sensing antenna for the microcontroller to execute Verification of the security chip.

In one embodiment, the sensor antenna is an NFC sensor antenna, the security chip is an NFC security chip, and the signal reader is an NFC signal reader.

In another embodiment, the seal body further includes an LTE telecommunication module and a Bluetooth module connected to the microcontroller, which are respectively used to provide signal transmission at different distances.

In the above embodiment, the LTE telecommunication module, the Bluetooth module and the NFC signal reader respectively receive unlock commands from long distance, medium distance and short distance for the microcontroller to execute the unlock command. verify.

In another embodiment, an unlocking button is provided on the seal body for unlocking the vehicle seal by pressing the unlocking button after the unlocking verification is successful.

In another embodiment, the seal body includes a clutch drive unit inside, and the seal tenon is provided on the clutch drive unit to drive the displacement of the seal tenon.

In the above embodiment, when the seal pin is inserted into the pin seat, the first micro switch provided on the pin seat is triggered to activate the clutch driving unit to push out the seal latch.

In the above embodiment, the clutch driving unit is activated when an unlocking button is pressed and the second micro switch is triggered to pull back the seal latch.

In another embodiment, the seal body includes a display light connected to the microcontroller for displaying the state of the car machine seal and an alarm when the car machine seal is abnormal.

In still another embodiment, a wireless charging module is arranged inside the seal body, so that when the seal body is placed on the charging stand, the wireless charging module is charged.

It can be seen from the above that in order to avoid the problem of damage caused by frequent use of contact electronic components, the car machine seal proposed in the present invention is verified by wireless transmission, that is, when the seal plug is inserted into the seal body, it is The signal reader reads the signal sent by the security chip in the seal pin to verify the lock. Through this non-contact method, the problem of poor electrical contact is reduced. In addition, the car machine seal provides an anti-damage mechanism, that is, if the connection between the security chip and the sensing antenna is lost, it can be judged that the seal pin is damaged. Furthermore, the car machine seal of the present invention has a variety of signal transmission mechanisms, so that it can be used in long, medium and short distances, regardless of The same personnel unpack the car machine seal. In summary, the car machine seal of the present invention has a non-contact verification mechanism, which avoids damage to the components and poor contact problems, and has multiple unlocking methods, wireless charging and anti-vandalism. The warning makes the car machine seal more stable and safe in use.

1: Car machine seal

10: The seal body

101: Bolt seat

102: Signal Reader

103: Microcontroller

1041: NFC module

1042: LTE Telecom Module

1043: Bluetooth module

1044: GNSS module

1045: Other wireless modules

1051: wireless charging module

1052: Power Management Module

1053: Battery Management Module

106: display light

107: Universal Input/Output Module

108: Solenoid valve drive module

1091: 6-axis accelerometer and gyroscope

1092: memory

11: Seal latch

111: Security chip

112: induction antenna

12: Connecting elements

13: Unlock button

14: Wireless charging receiving coil

15: battery

16: buzzer

17: Clutch drive unit

171: Self-retaining solenoid valve

181: The first micro switch

182: The second micro switch

19: Sealing Tenon

2: Seal charging stand

9: Container door

S1-S3: Action

Figure 1 is an external view of the car machine seal of the present invention.

Figure 2 is a schematic diagram of the seal pin and pin seat of the car machine seal of the present invention.

Figure 3 is a schematic diagram of the internal composition of the car machine seal of the present invention.

Figure 4 is a schematic diagram of a specific embodiment of the inside of the car machine seal of the present invention.

5A and 5B are schematic diagrams of locking and unlocking the car machine seal of the present invention.

6A-6C are schematic diagrams of the car machine seal of the present invention in different usage states.

Figure 7 is a schematic diagram of the machine seal of the present invention applied to a container truck.

The following describes the technical content of the present invention with specific specific embodiments. Those familiar with the art can easily understand the advantages and effects of the present invention from the content disclosed in this specification. However, the present invention can also be implemented or applied by other different specific embodiments.

Fig. 1 is an external view of the vehicle seal of the present invention, Fig. 2 is a schematic diagram of the seal pin and the latch seat of the vehicle seal of the present invention, and Fig. 3 is a schematic diagram of the internal composition of the vehicle seal of the present invention. Please refer to FIGS. 1 to 3 at the same time. The car machine seal 1 of the present invention includes a seal body 10, a seal pin 11, and a connecting element 12 (such as a connecting chain). The top end of the seal pin 11 is connected to the seal body 10 through the connecting element. , The connecting element 12 can prevent the seal pin 11 from falling off. The seal pin 11 is inserted into the seal body 10 to lock the seal pin 11 by the seal body 10. The detailed description of the car machine seal 1 proposed by the present invention is as follows.

The seal body 10 has a pin seat 101, a signal reader 102 and a microcontroller 103 adjacent to the pin seat 101. The plug socket 101 is for inserting the seal plug 11, and the signal reader 102 reads the signal sent from the seal plug 11 after the seal plug 11 is inserted into the plug socket 101, and then executes the seal body 10 and Whether the seal bolt 11 is legally locked (or called the seal seal) verification, and the microcontroller 103 provides the car machine seal 1 to perform processing and processing such as locking, unsealing, data processing, and message transmission. control.

Specifically, the seal body 10 contains electronic monitoring functions, such as a module that performs signal transmission, a module that performs verification processing, and other modules that perform alarm, braking, power control and other functions, as shown in Figure 3. It will be detailed later.

The seal pin 11 is provided with a security chip 111 at the top end and a sensing antenna 112 connected to the security chip 111 is provided at the bottom end of the seal pin 11. Specifically, the top end of the seal pin 11 is connected with a connecting element 12, and a security chip 111 is provided at the top end. The security chip 111 has a built-in anti-intrusion function that cannot be recorded or copied. In one embodiment, the seal pin 11 has an anti-shear detection circuit. Specifically, the sensing antenna 112 and the security chip 111 are electrically connected. Under such a structure, if the seal pin 11 is damaged, it will cause The connection between the sensing antenna 112 and the security chip 111 is interrupted. At this time, it indicates that the seal pin 11 is damaged, and an alarm can be further issued.

In one embodiment, the seal pin 11 can be designed as a bullet-shaped pin, which can have an anti-rotation design. Specifically, the seal pin 11 inserted into the seal body 10 can be provided with a seal post plastic sleeve (not shown). The joint with the machine body is combined in a square zigzag shape to prevent the seal pin 11 from being pulled out at a high speed after being sealed. In other words, if the seal pin 11 is forced to rotate after being sealed Rotation will cause damage to the plastic sleeve of the seal column, so this design can provide visual identification whether the seal pin 11 has been pulled apart by rotation.

When the vehicle seal 1 is locked, when the seal pin 11 is inserted into the seal body 10 and reaches the pin seat 101, the pin latch in the seal body 10 (please refer to FIG. 4 and detailed description later) is moved to restrict The displacement of the seal pin 11 and the signal reader 102 read the message sent by the security chip 111 through the sensing antenna 112 to provide the microcontroller 103 to verify the security chip 111. In short, after the seal pin 11 is inserted into the seal body 10, the trigger mechanism (which will be described in detail later) causes the pin latch in the seal body 10 to move, and then engages with the groove on the seal pin 11 , Thereby restricting the movement of the seal pin 11. At this time, the signal reader 102 is activated, and the message sent by the security chip 111 is read through the sensing antenna 112, and the signal reader 102 reads the message The message is sent to the microcontroller 103 to allow the microcontroller 103 to perform the verification of the security chip 111, that is, to verify the locking action of the seal pin 11 being inserted.

The car machine seal 1 of the present invention is designed not to use traditional contact electronic components, but to complete the signal transmission through wireless transmission. Therefore, the short-distance transmission mechanism is considered. In one embodiment, the present invention uses short-range wireless communication. (Near-field communication, NFC) transmission mechanism, so the security chip 111 can be an NFC security chip, the sensor antenna 112 can be an NFC sensor antenna, and the signal reader 102 can be an NFC signal reader, as described above, The NFC signal reader can read the signal of the NFC security chip through the NFC sensor antenna. As shown in FIG. 3, the seal body 10 includes an NFC module 1041, which can provide short-distance (less than 5 cm) signal transmission.

As shown in FIG. 3, the seal body 10 internally includes an LTE (Long Term Evolution) telecommunication module 1042 and a Bluetooth module 1043 connected to the microcontroller 103, which are used to provide long-distance and mid-distance distances, respectively. The signal transmission. LTE telecom module 1042 uses 4G LTE telecommunication technology can provide long-distance signal transmission. The Bluetooth module 1043 adopts Bluetooth transmission technology, which can provide medium-distance (less than 10 meters) signal transmission.

It can be seen from the above that the car machine seal 1 of the present invention provides a multi-frequency wireless communication function. Among them, the LTE telecommunication module 1042, the Bluetooth module 1043, and the NFC module 1041 (such as NFC signal reader) provide long-distance and medium-distance communication, respectively. The long-distance and short-distance transmission mechanism can obtain the required signals in different application scenarios. For example, the LTE telecommunication module 1042 can be applied to two-way transmission of positioning/monitoring information, such as providing a monitoring center to perform remote monitoring. The Bluetooth module 1043 can be applied to positioning in areas with a small monitoring range, such as lanes and freight terminals. , That is, to identify which lane to enter or which cargo terminal to move to. The NFC module 1041 can be used for short-range non-contact identification, that is, read monitoring information through NFC mobile phones/cards and perform unlocking, such as using NFC encryption to unlock Unlock with a card, or read the information of the car seal 1 through an NFC mobile phone for identification and anti-counterfeiting.

In one embodiment, the seal body 10 is provided with an unlock button 13 for unlocking the vehicle seal 1, and is pressed after the unlock verification is successful, and then the unlocking of the vehicle seal 1 is performed. Specifically, unlock verification can be performed by different staff, such as monitoring center, terminal staff or vehicle driving. In other words, different staff will have different processing mechanisms for unlocking, because the distance between the above-mentioned staff and the vehicle seal 1 is different. Therefore, the multi-frequency wireless communication of the present invention can provide different unlocking methods, that is, the LTE telecommunication module 1042, the Bluetooth module 1043, and the NFC module 1041 can receive unlocking commands from long-distance, medium-distance and short-distance, such as monitoring center Personnel use 4G LTE telecommunications technology to transmit the unlocking command to the LTE telecommunications module 1042, or the terminal personnel use Bluetooth transmission technology to transmit the unlocking command to the Bluetooth module 1043, or vehicle driving through the NFC transmission mechanism. Send the unlock command to the NFC module 1041, and finally, the unlock command will be sent It is sent to the microcontroller 103 to perform the verification of the unlock command by the microcontroller 103. If the verification is successful, the unlock button 13 can be pressed to unlock the unlock button 13.

In another embodiment, the Bluetooth module 1043 that provides mid-range signal transmission function can be used in more scenarios, such as short-range positioning assistance, to provide accurate lane and parking position detection, and Bluetooth-based Two-way transmission, it can provide the connection of car and machine equipment with Bluetooth reception, and send the seal status and car machine positioning information to the monitoring center in real time, or provide automatic procedures such as lane gate control and automatic seal identification function. In addition, it can Use a mobile device to monitor the car and machine seal 1, that is, use a mobile phone or tablet to read the state of the seal or control the unsealing.

In other embodiments, the seal body 10 may have a global navigation system (Global Navigation Satellite System, GNSS) module 1044, and the GNSS module 1044 may be used for positioning the vehicle seal 1, for example, to monitor container trucks or The route or status of the bonded truck can be transmitted to the monitoring center in real time through the GNSS module 1044 to facilitate monitoring by the personnel of the monitoring center. In addition, the present invention may also have other wireless modules 1045 (such as 5G, etc.) for receiving various commands of different or the same distance to implement the present invention.

In other embodiments, the seal body 10 is provided with a wireless charging module 1051 inside, so that the seal body 10 is charged through the wireless charging module 1051 when the seal body 10 is placed on the charging stand. As shown in Figure 3, the wireless charging module 1051 can be connected to the wireless charging receiving coil 14 inside the seal body 10 to perform wireless induction charging. The seal charging stand can be designed to be used with the car to facilitate the use of the car seal 1 It can be recharged. The seal charging cradle will be described in detail later.

After the wireless charging module 1051 performs wireless charging, the battery management module 1053 transmits electric energy to the battery 15 for storage. In addition, the electric energy will be managed and controlled through the power management module 1052 for use by the modules inside the seal body 10.

In other embodiments, the seal body 10 includes a display light 106 connected to the microcontroller 103 for displaying the status of the car machine seal 1 and an alarm when the car machine seal 1 is abnormal. As shown in Figure 3, the indicator light 106 can display the use status of the car machine seal 1, such as locked or unsealed. For example, after the lock is locked, the indicator light 106 can display a green light, and after the verification is successful, you can press When the unlock button 13 is pressed to unlock, the indicator light 106 can be reminded by continuous flashing green light. In addition, if the seal latch 11 is damaged, it can also be reminded by continuous flashing red light. Furthermore, it can also be reminded by universal input/ The output module 107 makes the buzzer 16 emit a warning sound.

In other embodiments, the seal body 10 includes a solenoid valve driving module 108, which receives the control of the microcontroller 103 to actuate the self-holding solenoid valve 171. Change the original switch state intermittently. For example, when the battery is depleted after being sealed and locked, the state will remain locked, and vice versa. When the battery is depleted after unsealing, the state will remain on, thus avoiding the car machine Seal 1 is not able to operate normally due to power problems.

In addition, the seal body 10 can also be provided with a 6-axis accelerometer and gyroscope 1091 and a memory 1092. Among them, the 6-axis accelerometer and gyroscope 1091 are mainly used to sense the use of the car machine seal 1, which is beneficial to the follow-up Check whether the car machine seal 1 is used abnormally, and the memory 1092 mainly stores the state of the car machine seal 1 for subsequent display. In addition, it also stores the check correspondence table required by the verification mechanism. The check correspondence table, such as those signals received Or the instruction is legal.

Figure 4 is a schematic diagram of a specific embodiment of the inside of the car machine seal of the present invention. As shown in the figure, please refer to FIGS. 1 to 3 together. The seal body 10 includes a clutch driving unit 17 inside, and a seal latch 19 is provided on the clutch driving unit 17 to drive the displacement of the seal latch 19. The clutch driving unit 17 is respectively connected to the first micro switch 181 and the second micro switch 182. When the first micro switch 181 and the second micro switch 182 are triggered, the movement of the clutch driving unit 17 can be started, for example, to the left in the figure The movement has the effect of restricting the movement of the seal bolt 11, that is, performing locking. In addition, if it moves to the right in the figure, it has the effect of releasing the limit of the seal bolt 11, that is, performing unsealing.

Specifically, the first micro switch 181 is provided on the pin seat 101. When the seal pin 11 is inserted, it will press the first micro switch 181 to activate the clutch drive unit 17 and also make the underside of the pin seat 101 The signal reader 102 reads the signal from the seal pin 11 for verification. In addition, the second micro switch 182 is disposed under the unlock button 13. When the unlock button 13 is pressed, the second micro switch 182 is triggered, and the clutch driving unit 17 is activated.

Figures 5A and 5B are schematic diagrams of locking and unlocking the car machine seal of the present invention. Please refer to Figures 1 to 3 together. Fig. 5A shows that the car machine seal is locked. As shown in the figure, actions S1 and S2 are executed in sequence. When the seal pin 11 is inserted into the pin seat 10, the first micro switch 181 provided on the pin seat 10 is triggered to The clutch driving unit 17 is activated to push the seal latch 19 out. The pushing out here refers to moving toward the position of the seal latch 11, so that the seal latch 19 is engaged in the groove of the seal latch 11. At this time, the seal The bolt 11 is restricted by the seal latch 19 and cannot be moved. At the same time, the security chip 111 will be verified. If the security chip 111 passes the verification, the indicator light 106 can be made to flash the indicator light, and the sealing completion message will be sent. In addition, if the verification of the security chip 111 fails, the display light 106 can be made to flash the warning light, and the upper envelope abnormal message can be sent.

Figure 5B shows the unlocking of the vehicle seal. As mentioned above, the unlocking command can be provided in different ways, for example, through the LTE telecommunication module 1042, receiving the remotely transmitted unlocking command from the monitoring center to perform the unlocking, or through the Bluetooth module 1043. Receive a fixed-point Bluetooth beacon signal (for example, an unloading dock) to read an unlock command to perform unblocking, or through the NFC module 1041, read the unlock command with a proximity sensor NFC mobile phone/card to perform unblocking. As shown in the figure, actions S1, S2, and S3 are executed in sequence. When the car machine seal 1 receives the unlocking instruction and the verification is successful, the indicator light 106 shows the unlockable state, and the unlock button 13 is pressed and triggered When the second micro switch 182 is activated, the clutch drive unit 17 is activated to pull the seal latch 19 back. The pull-back mentioned here refers to moving away from the seal latch 11 to move the seal latch 19 away from the seal latch 11. When the restriction on the movement of the seal pin 11 is released, the seal pin 11 can be pulled out to leave the seal body 10 at this time.

In addition, furthermore, when the seal latch 11 is pulled up, the car machine seal 1 transmits a message indicating that the unsealing is complete, and then the car machine seal 1 can enter the dormant state.

6A-6C are schematic diagrams of the car machine seal of the present invention in different usage states. As shown in FIG. 6A, the seal pin 11 is inserted into the seal body 10, and it is in the sealed (locked) state at this time. As shown in FIG. 6B, the seal pin 11 is removed from the seal body 10, and it is in an unsealed (unlocked) state. In another embodiment, a magnetic element can be added to the side of the seal body 10. It can be used to absorb the seal pin 11 to avoid shaking of the seal pin 11.

As shown in FIG. 6B, when the seal latch 11 is unlocked, the seal body 10 is charged. Specifically, the seal body 10 can be inserted into the seal charging base 2 for wireless charging. The seal shown in the figure is charged The base 2 can supply two seal bodies 10 for charging at the same time. The seal charging base 2 can be designed to be used with the car, that is, it can be connected to the vehicle power supply. During the charging process, the change of the display light 106 can be used to prompt the charging result.

Figure 7 is a schematic diagram of the machine seal of the present invention applied to a container truck. Please refer to Figures 1 to 4 together. In practical applications, the present invention can be used in transportation vehicles for transporting goods, such as container trucks or bonded trucks. When the operator seals the container door 9, the seal pin 11 passes through the container rod of the container door 9 After the hole is locked, it is inserted into the pin seat 101 of the seal body 10 to be combined with the seal body 10. At this time, after the first micro switch 181 is triggered, the pin latch 19 in the seal body 10 is moved to restrict the seal The displacement of the pin 11 reaches the locked state. At this time, the signal reader 102 reads the information of the security chip 111 through the sensing antenna 112, and then performs the verification of the security chip 111.

In terms of unlocking, the seal body 10 receives unlocking instructions from different sources, such as long, medium, and short distance unlocking instructions, to execute the unlocking of the vehicle seal 1. If it is determined that the unlocking instruction is correct, the unlocking button 13 is After being pressed, the second micro switch 182 is triggered, so that the latch latch 19 is far away from the seal latch 11 to reach an unlocked state.

In summary, the car machine seal of the present invention is verified by wireless transmission, that is, when the seal pin is inserted into the seal body, the signal reader of the seal body reads the signal sent by the security chip in the seal pin to To verify the lock, the present invention avoids the problem of poor contact caused by frequent use of contacting electronic components through this non-contact verification mechanism; furthermore, the car machine seal of the present invention loses the connection between the security chip and the sensing antenna, It is judged that the seal bolt is damaged, and further alarms can be given; in addition, the car machine seal of the present invention provides a variety of different signal transmission mechanisms for different personnel to use long, medium, and short distance transmission mechanisms to unseal the car machine seal. Therefore, the car machine seal of the present invention has a non-contact verification mechanism, which avoids the problem of poor contact due to damage to the components. It also has multiple unlocking methods, wireless charging and anti-vandal alarms, which ensure the stability of the car machine seal in use. Sex and safety.

The above-mentioned embodiments are only illustrative descriptions, and are not used to limit the present invention. Anyone who is familiar with this technique can modify and change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is defined by the scope of the patent application attached to the present invention. As long as it does not affect the effect and implementation purpose of the present invention, it should be covered in the technical content of this disclosure.

10: The seal body

101: Bolt seat

102: Signal Reader

11: Seal latch

111: Security chip

112: induction antenna

Claims (10)

A car machine seal, which includes: The seal body, which has a pin seat, a signal reader and a microcontroller adjacent to the pin seat; and The top end of the seal pin is connected to the seal body through a connecting element, the seal pin is provided with a security chip at the top end and a sensing antenna connected to the security chip is provided at the bottom end of the seal pin, Wherein, when the seal pin is inserted into the seal body to the pin seat, the pin latch in the seal body is moved to limit the displacement of the seal pin, and the signal reader is made to read the location of the security chip through the sensing antenna. A message sent for the microcontroller to perform verification of the security chip. The vehicle seal of claim 1, wherein the sensor antenna is an NFC sensor antenna, the security chip is an NFC security chip, and the signal reader is an NFC signal reader. The car and machine seal according to claim 2, wherein the seal body further includes an LTE telecommunication module and a Bluetooth module connected to the microcontroller, which are respectively used to provide signal transmission at different distances. The car machine seal according to claim 3, wherein the LTE telecommunication module, the Bluetooth module and the NFC signal reader respectively receive unlocking commands from long distance, medium distance and short distance for the micro The controller executes the verification of the unlock command. The vehicle seal of claim 1, wherein the seal body is provided with an unlocking button for unlocking the vehicle seal by pressing the unlocking button after successful unlock verification. The vehicle seal of claim 1, wherein the seal body includes a clutch drive unit inside the seal body, and the seal tenon is provided on the clutch drive unit to drive the displacement of the seal tenon. The vehicle seal of claim 6, wherein when the seal pin is inserted into the pin seat, a first micro switch provided on the pin seat is triggered to activate the clutch drive unit to push out the seal latch. The vehicle seal according to claim 6, wherein the clutch driving unit is activated when an unlocking button is pressed and the second micro switch is triggered to pull back the seal latch. The car machine seal according to claim 1, wherein the seal body includes a display light connected to the microcontroller for displaying the state of the car machine seal and an alarm when the car machine seal is abnormal. The vehicle seal of claim 1, wherein the seal body is provided with a wireless charging module inside, so that when the seal body is placed on the charging stand, it can be charged through the wireless charging module.

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