TWI642003B - System and method for monitoring cargos,terminal device and save-deposit box - Google Patents

Abstract

A cargo monitoring system suitable for a container truck, comprising: one or more safes for loading goods and generating one or more Bluetooth signals; a plurality of Bluetooth antenna devices installed on a door frame of the container truck and the container In the car to receive the Bluetooth signal from the safe; and a terminal device connected to the Bluetooth antenna device through a cable to receive one of the safe information provided by the Bluetooth signal and use the safe Information monitors the above safes.

Description

Cargo monitoring system and method, terminal device and safe

The description of the present invention mainly relates to a cargo monitoring technology, and particularly relates to a cargo monitoring technology for transmitting a Bluetooth signal of a safe through a cable to monitor the safe in the container in real time.

In recent years, due to the rapid development of wireless communication technology, various portable and handheld devices, such as: mobile phones, smart phones, personal digital assistants (PDAs), and tablet PCs (Tablet PCs) ) And other electronic goods are constantly being introduced in the market, and the functions of these electronic goods are becoming more and more diversified. In addition, due to the convenience of these devices, these devices have also become one of the necessities of people's lives.

Users can use wireless communication technology on electronic devices or mobile devices, such as: infrared, Bluetooth, 802.11 (Wi-Fi), ZigBee, Ultra WideBand, Near Field Communication , NFC) and other wireless transmission technologies to transmit messages and data.

Since Bluetooth is a widely used in computers and mobile phones, Wireless transmission technology on telephones and other home appliances, so if the Bluetooth function of electronic devices is applied to the real-time monitoring of goods when a container truck transports them, it will be a topic worth discussing.

In view of the foregoing problems of the prior art, the present invention provides a cargo monitoring system and method for transmitting a Bluetooth signal of a safe via a cable to monitor the safe in the container in real time.

According to an embodiment of the present invention, a cargo monitoring system is provided, wherein the cargo monitoring system is suitable for a container truck. The cargo monitoring system includes one or more safes, multiple Bluetooth antenna devices, and a terminal device. The safe is used for loading cargo and generating one or more Bluetooth signals. The plurality of Bluetooth antenna devices are installed on a door frame of the container truck and in the container truck to receive the Bluetooth signal from the safe. The terminal device is connected to the Bluetooth antenna device through a cable to receive a safe information provided by the Bluetooth signal, and monitor the safe using the safe information.

According to an embodiment of the present invention, a safe is provided, wherein the safe is suitable for cargo monitoring of a container truck. The safe includes a Bluetooth device for generating one or more Bluetooth signals. When the plurality of Bluetooth antenna devices installed in the container truck receive the Bluetooth signal from the safe, the plurality of Bluetooth antenna devices transmit a safe information provided by the Bluetooth signal through a cable to a terminal device to monitor the above safe.

According to an embodiment of the present invention, a terminal device is provided. The terminal device is suitable for cargo monitoring of a container truck. The terminal device includes a receiving device and a controller. The receiving device is connected to a plurality of Bluetooth antenna devices through a cable to receive a safe information provided by a Bluetooth signal from one or more safes. The controller is configured to monitor the safe by using the safe information.

According to an embodiment of the present invention, a cargo monitoring method is provided, wherein the cargo monitoring method is applicable to a container truck. The steps of this cargo monitoring method include: when one or more safes pass through a door frame of the container truck, the Bluetooth signal generated by the safe is sensed by a plurality of Bluetooth antenna devices arranged on the door frame; The Bluetooth antenna device transmits the sensed Bluetooth signal to a terminal device through a cable; and the terminal device monitors the safe by using a safe information provided by the Bluetooth signal.

According to another embodiment of the present invention, a cargo monitoring method is provided, wherein the cargo monitoring method is applicable to a terminal device of a container truck. The steps of the cargo monitoring method include: connecting a plurality of Bluetooth antenna devices through a cable to receive a safe information provided by a Bluetooth signal from one or more safes; and monitoring the safes through the safe information.

Regarding other additional features and advantages of the present invention, those skilled in the art can, without departing from the spirit and scope of the present invention, use the user device, system, and method for performing a contact procedure according to the method disclosed in this case , Get a little modification and retouching.

100‧‧‧Cargo monitoring system

110‧‧‧ Safe

111‧‧‧Bluetooth device

112‧‧‧Sensing device

120‧‧‧Bluetooth antenna device

130‧‧‧Terminal device

131‧‧‧ receiving device

132‧‧‧controller

133‧‧‧Storage device

140‧‧‧Frequency reduction device

150‧‧‧ upscaling device

500, 600‧‧‧ flowchart

FIG. 1 is a block diagram showing a cargo monitoring system 100 according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a safe 110 according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a terminal device 130 according to an embodiment of the present invention.

FIG. 4 is a block diagram showing the frequency reducing device 140 and the frequency increasing device 150 according to the embodiment of the present invention.

FIG. 5 is a flowchart 500 of a cargo monitoring method according to an embodiment of the present invention.

FIG. 6 is a flowchart 600 of a cargo monitoring method according to another embodiment of the present invention.

This section describes the best way to implement the present invention. The purpose is to explain the spirit of the present invention and not to limit the scope of protection of the present invention. The scope of protection of the present invention shall be determined by the scope of the attached patent application. .

FIG. 1 is a block diagram showing a cargo monitoring system 100 according to an embodiment of the present invention. The cargo monitoring system 100 is applicable to a vehicle for transporting goods, such as a container truck, a truck, etc. Car for illustration). As shown in FIG. 1, the cargo monitoring system 100 includes one or more safes (represented by safe 110 in FIG. 1), a plurality of Bluetooth antenna devices (all shown as 120 in FIG. 1), and a terminal device 130. . The block diagram in FIG. 1 is only for the convenience of describing the embodiments of the present invention, but the present invention is not limited thereto. The cargo monitoring system 100 may also include multiple safes or different numbers of Bluetooth antenna devices 120. In particular, the block containing the safe 110 and the Bluetooth antenna device 120 can be regarded as the part of the container of the container truck, and the block containing the terminal device 130 can be regarded as the part of the driver's seat of the container truck.

FIG. 2 is a block diagram showing a safe 110 according to an embodiment of the present invention. As shown in FIG. 2, the safe 110 is used for loading goods, and includes a Bluetooth device 111 and a sensing device 112. The block diagram in FIG. 2 is only for the convenience of describing the embodiments of the present invention, but the present invention is not limited thereto.

The Bluetooth device 111 is used to generate a Bluetooth signal. The safe 110 can provide the safe information to the Bluetooth antenna device 120 through the Bluetooth communication through the Bluetooth device 111. The sensing device 112 is used for generating safe information. According to an embodiment of the present invention, the safe information includes a temperature information, a humidity information, a vibration information, and the like. According to an embodiment of the present invention, the sensing device 112 includes a temperature module (for example, a thermometer), a humidity module (a hygrometer), and a gravity sensor (g-sensor) to separately detect temperature information. , Humidity information, vibration information. According to an embodiment of the present invention, each safe will correspond to a different Media Access Control Address, and the media access control address of each safe will also include It is included in the safe information to provide the terminal device 130 to identify different safes.

According to an embodiment of the present invention, the Bluetooth antenna device 120 is installed on the door frame of the container truck and inside the container truck. For example, as shown in Figure 1, a Bluetooth antenna device 120 will be installed at a predetermined distance on the door frame of a container truck, and it will be in an appropriate position inside the container truck (for example, a safe can be received Bluetooth signal range of 110) Bluetooth antenna device 120 is installed. The Bluetooth antenna device 120 is connected to the terminal device 130 through a cable. The Bluetooth antenna device 120 receives the Bluetooth signal generated from the safe 110 and transmits the received Bluetooth signal to the terminal device 130 through a cable.

FIG. 3 is a block diagram showing a terminal device 130 according to an embodiment of the present invention. As shown in FIG. 3, according to an embodiment of the present invention, the terminal device 130 includes a receiving device 131 and a controller 132. In this embodiment, the terminal device 130 is installed in the driver's seat of the container truck to provide road information and safe information in real time to the driver of the container truck. The block diagram in FIG. 3 is only for the convenience of describing the embodiments of the present invention, but the present invention is not limited thereto.

The receiving device 131 is configured to receive a Bluetooth signal transmitted by the Bluetooth antenna device 120 from a cable. The controller 132 can obtain the safe information of the safe 110 according to the received Bluetooth message, and monitor the safe 110 according to the safe information. According to an embodiment of the present invention, the terminal device 130 also includes a display interface (not shown) for displaying safe information of the safe 110.

According to an embodiment of the present invention, the terminal device 130 also includes a The storage device 133 is configured to store road information in advance. The road information stored in the terminal device 130 is collected in advance through a plurality of container trucks in different transportation routes. Each container truck will generate road information corresponding to different transportation paths according to the information generated by its g-sensor. For example, which road sections will have a large degree of jitter and need to drive at a slow speed. After the road information is collected, the terminal device 130 obtains and stores the collected road information in advance. The controller 132 may determine whether to limit the speed of the container truck according to the current position, speed, and road information of the container truck. To limit the speed of the container truck, the controller 132 will generate a notification message to inform the driver of the container truck that the current section of the road needs to be reduced in speed. According to an embodiment of the present invention, the controller 132 updates the road information stored in the storage device 133 according to the information provided by a server.

According to an embodiment of the present invention, when a container truck is used to transport goods, the Bluetooth device 111 of the safe 110 is activated first. When the safe 110 passes through the door frame of the container truck, the Bluetooth antenna device 120 installed on the door frame will sense the safe 110 passing through the door frame, and then the Bluetooth antenna device 120 will transmit the sensed Bluetooth signal through the cable. To the terminal device 130. The terminal device 130 can calculate the number of the safe 100 placed in the container according to the Bluetooth signal sensed by the Bluetooth antenna device 120.

During the transportation of the safe 110 by the container truck, the terminal device 130 can obtain the safe information according to the Bluetooth signal provided by the Bluetooth antenna device 120 installed in the container. The driver of the container truck can monitor the status of the safe 100 in real time according to the safe information provided by the terminal device 130 (for example, information displayed on a display interface).

According to an embodiment of the present invention, during the transportation of the safe 110 by the container truck, the controller 132 of the terminal device 130 determines whether to limit the speed of the container truck according to the vibration information provided by the safe 110. According to an embodiment of the present invention, if the controller 132 determines that the current vibration level of the safe 110 has exceeded a critical value based on the vibration information, that is, when the goods in the safe 110 may be damaged, the controller 132 will determine the limit Speed of the container truck. According to an embodiment of the present invention, when the speed of the container truck is to be restricted, the controller 132 will generate a notification message to inform the container truck of driving, and the current road section needs to be reduced in speed. Therefore, according to the vibration information provided by the safe 110, the terminal device 130 can immediately monitor the status of the safe 100 and provide the monitoring results to the driver of the container truck in real time to increase the safety and stability of the goods in the safe 110. Sex.

According to an embodiment of the present invention, when it is necessary to check whether the number of safes carried by the container truck is correct in the dock unloading area, customs or factory unloading area, the inspector can obtain the terminal device 130 through a Bluetooth network through an electronic device Information on the number of safes to verify that the number of safes is correct. According to an embodiment of the present invention, the electronic device may refer to a portable electronic device, such as a mobile phone, a smartphone, a personal digital assistant (PDA), a notebook computer, and a tablet computer. Wait. According to an embodiment of the present invention, the electronic device may be connected to the terminal device 130 via a dock-connector to enable the Bluetooth network, that is, establish a Bluetooth connection with the terminal device 130. According to an embodiment of the invention, the inspector is confirming the number of safes Later, the signing action can also be performed by the electronic device. Therefore, by the method of the above embodiment, the inspector or the driver of the container truck can obtain the information of the number of safes in real time through an electronic device to prevent theft or loss of the safe.

FIG. 4 is a block diagram showing the frequency reducing device 140 and the frequency increasing device 150 according to the embodiment of the present invention. As shown in FIG. 4, according to an embodiment of the present invention, the cargo monitoring system 100 may further include a frequency reducing device 140 and a frequency increasing device 150. As the frequency band supported by general Bluetooth wireless transmission technology is 2.4G, it is not necessary that all cable bands support the transmission of Bluetooth signals. Therefore, when one of the frequency bands supported by the cable is less than a Bluetooth band, the frequency reduction device 140 first performs a frequency reduction operation on the Bluetooth signal before transmitting the Bluetooth signal through the cable, so that the Bluetooth signal can be converted into Signal transmitted on the frequency band supported by the cable. When the down-converted Bluetooth signal is to be transmitted to the terminal device 130, the up-conversion device 150 performs an up-conversion operation on the down-converted Bluetooth signal to restore the original Bluetooth signal. According to another embodiment of the present invention, when the cable can support a Bluetooth band, that is, the cable can directly perform Bluetooth signal transmission, the Bluetooth signal does not need to pass through the frequency reduction operation of the frequency reduction device 140 first.

According to an embodiment of the present invention, the Bluetooth antenna device 120 may also be replaced by an antenna device of other wireless transmission technologies, such as: 802.11 (Wi-Fi), ZigBee, Ultra Wide Band, and Near Field Communication , NFC) and other wireless transmission technologies. In this embodiment, the safe 110 may also support other wireless transmission technologies to transmit signals of different wireless transmission technologies to other wireless transmission technologies. Antenna device. In the embodiments of the present invention, the Bluetooth wireless transmission technology is mainly used for description, but the present invention is not limited thereto.

FIG. 5 is a flowchart 500 of a cargo monitoring method according to an embodiment of the present invention. This signal transmission method is applicable to the cargo monitoring system 100. As shown in FIG. 5, in step S510, the Bluetooth signal generated by the safe 110 is sensed by the multiple Bluetooth antenna device 120. In step S520, the Bluetooth signal transmitted by the Bluetooth antenna device 120 to the terminal device 130 via a cable. In step S530, the terminal device 130 monitors the safe 110 according to one of the safe information provided by the Bluetooth signal.

According to an embodiment of the present invention, step 520 further includes: when the safe 110 passes through a door frame of the container truck, the Bluetooth signal generated by the safe 110 is sensed by a plurality of Bluetooth antenna devices 120 arranged on the door frame, and by The terminal device 130 calculates the number of the safe 110 based on the received Bluetooth signal. According to an embodiment of the present invention, the steps of the above method further include obtaining information of the number of safes from the terminal device 130 through an Bluetooth device via an electronic device to verify whether the number of safes is correct. According to an embodiment of the present invention, the electronic device is connected to the terminal device 130 via a connector to start a Bluetooth network, that is, establish a Bluetooth connection with the terminal device 130.

According to an embodiment of the present invention, the steps of the above method further include storing a road information in advance by the terminal device 130. Based on the current position, speed, and road information of the container truck, the terminal device 130 may decide whether to limit the speed of the container truck. To limit the speed of the container truck, the terminal device 130 generates a notification message to notify the driving of the container truck. In this embodiment, the steps of the above method further include updating the stored road information by the terminal device 130 according to the information provided by a server.

According to another embodiment of the present invention, the steps of the above method further include, by the terminal device 130, determining whether to limit the speed of the container truck according to the vibration information generated by the safe 110. To limit the speed of the container truck, the terminal device 130 generates a notification message to notify the driving of the container truck.

According to an embodiment of the present invention, the steps of the above method further include: when a frequency band supported by the cable is less than a Bluetooth band, before transmitting the Bluetooth signal through the cable, the frequency of the Bluetooth signal is reduced by the downconverter 140. When the down-converted Bluetooth signal is to be transmitted to the terminal device 130, the up-converter 150 performs an up-conversion operation on the down-converted Bluetooth signal to restore the Bluetooth signal.

FIG. 6 is a flowchart 600 of a cargo monitoring method according to an embodiment of the present invention. This signal transmission method is applicable to the terminal device 130. As shown in FIG. 6, in step S610, the terminal device 130 is connected to the plurality of Bluetooth antenna devices 120 through a cable to receive one of the safe information provided by the Bluetooth signal from the one or more safes 120. In step S620, the terminal device 130 monitors the safe 120 by using the safe information.

The method and algorithm steps disclosed in the description of the present invention can be directly applied to hardware and software modules or a combination of both by executing a processor. A software module (including execution instructions and related data) and other data can be stored in the data memory, such as random access memory (RAM), flash memory, read-only memory (ROM) , Removable Programmable Read-Only Memory (EPROM), Electronic Removable Programmable Read-Only Memory (EEPROM), Register, Hard Disk, Portable Disk, CD-ROM ), DVD, or any other computer-readable storage media format known in the art. A storage medium may be coupled to a machine device, for example, such as a computer / processor (for the convenience of description, it is referred to as a processor in this manual). The processor can read information (such as a program) Code), and write information to storage media. A storage medium can be integrated with a processor. An application specific integrated circuit (ASIC) includes a processor and a storage medium. A user equipment includes a special application integrated circuit. In other words, the processor and the storage medium are included in the user equipment in a manner not directly connected to the user equipment. In addition, in some embodiments, any product suitable for a computer program includes a readable storage medium, where the readable storage medium includes code related to one or more of the disclosed embodiments. In some embodiments, the product of the computer program may include packaging materials.

"One embodiment" or "an embodiment" mentioned in this specification indicates that the specific feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment according to the present invention, but does not mean that They exist in every embodiment. Thus, the appearances of the phrase "in one embodiment" or "in an embodiment" in various places in this specification do not necessarily denote the same embodiment of the invention.

The above paragraphs are described at multiple levels. Obviously, the teachings of this article can be implemented in many ways, and any particular architecture or function disclosed in the examples is only a representative situation. According to the teachings of this article, anyone familiar with the art should understand that the aspects disclosed in this article can be implemented independently or in two ways. More than one level can be combined and implemented.

Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and retouching without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be determined by the scope of the attached patent application.

Claims (42)

A cargo monitoring system suitable for a container truck, including: one or more safes placed in the container truck for loading cargo, and generating one or more Bluetooth signals; a plurality of Bluetooth antenna devices installed in the container truck One of the door frame and the container truck to receive the Bluetooth signal from the safe; and a terminal device connected to the Bluetooth antenna device by a cable to receive the Bluetooth signal from the cable. One of the safe information, and monitor the safe with the safe information. The cargo monitoring system according to item 1 of the scope of patent application, wherein when the safe passes through the door frame, the Bluetooth antenna device installed on the door frame will sense the safe and will sense the Bluetooth signal. The cable is transmitted to the terminal device, and the terminal device calculates the number of the safes based on the Bluetooth signal sensed. The cargo monitoring system described in item 1 of the scope of patent application, further includes: an electronic device for obtaining information on the number of the safes from the terminal device via a Bluetooth network. The cargo monitoring system according to item 3 of the scope of patent application, wherein the electronic device is connected to the terminal device through a connector to activate the Bluetooth network. The cargo monitoring system according to item 1 of the patent application scope, wherein the terminal device is further used to store a road information in advance. The cargo monitoring system according to item 5 of the scope of patent application, wherein the terminal device is further configured to update the road information according to information provided by a server. According to the cargo monitoring system described in item 5 of the scope of patent application, the terminal device is further configured to generate a notification message based on the current position, speed, and road information of the container truck to determine whether to limit the speed of the container truck. The cargo monitoring system according to item 1 of the scope of the patent application, wherein the safe information includes a temperature information, a humidity information, and a vibration information. The cargo monitoring system according to item 5 of the scope of the patent application, wherein the terminal device is further configured to generate a notification message based on the vibration information of the safe box to determine whether to limit the speed of the container truck. According to the cargo monitoring system described in item 1 of the scope of the patent application, each of the above safes corresponds to a different Media Access Control Address. The cargo monitoring system according to item 1 of the scope of patent application, wherein the terminal device is further used to display the safe information of the safe. The cargo monitoring system described in item 1 of the scope of patent application, further includes: a frequency reduction device, when a frequency band supported by the cable is less than a Bluetooth band, before transmitting the Bluetooth signal through the cable, Performing a frequency reduction operation on the above-mentioned Bluetooth signal; and an up-conversion device, which is used for performing an up-frequency operation on the down-frequency Bluetooth signal when the down-frequency Bluetooth signal is to be transmitted to the terminal device; Restore the above Bluetooth signal. A safe is suitable for the cargo monitoring of a container truck, and the safe is placed in the container truck. The safe includes: a Bluetooth device for generating one or more Bluetooth signals; and a sensing device for generating The safe information of the safe, wherein when the plurality of Bluetooth antenna devices installed in the container truck receive the Bluetooth signal from the safe, the plurality of Bluetooth antenna devices transmit the safe information provided by the Bluetooth signal through a cable. To a terminal device to monitor the safe. The safe according to item 13 of the patent application scope, wherein the safe information includes a temperature information, a humidity information, and a vibration information. According to the safe box according to item 14 of the scope of patent application, the terminal device is used to determine whether to limit the speed of the container truck based on the vibration information of the safe box. The safe as described in claim 13 of the scope of patent application, wherein the safe has a Media Access Control Address. A terminal device suitable for cargo monitoring of a container truck, including: a receiving device for connecting to a plurality of Bluetooth antenna devices through a cable to receive one or more of the plurality of cables placed in the container truck from the cable; A safe information provided by the Bluetooth signal of the safe; and a controller for monitoring the safe using the safe information. The terminal device according to item 17 of the scope of patent application, wherein when the safe passes through a door frame of the container truck, the controller calculates the above based on the Bluetooth signal sensed by the Bluetooth antenna device installed on the door frame. Number of safes. The terminal device described in item 17 of the scope of patent application, further includes: a storage device for storing a road information in advance. The terminal device according to item 19 of the scope of patent application, wherein the controller is further configured to update the road information according to information provided by a server. According to the terminal device described in item 19 of the scope of patent application, the controller is further configured to generate a notification message based on the current position, speed, and road information of the container truck to determine whether to limit the speed of the container truck. The terminal device according to item 17 of the scope of patent application, wherein the controller is further configured to generate a notification message according to the vibration information of one of the safes to determine whether to limit the speed of the container truck. The terminal device according to item 17 of the scope of patent application, further includes: a display interface for displaying the safe information of the safe. A cargo monitoring method suitable for a container truck, including: sensing a Bluetooth signal generated by one or more safes placed in the container truck by a plurality of Bluetooth antenna devices; and passing a cable through the Bluetooth antenna device Transmitting the sensed Bluetooth signal to a terminal device; and monitoring the safe by the terminal device according to a safe information provided by the Bluetooth signal. The cargo monitoring method according to item 24 of the scope of patent application, further comprising: when the safe passes through one of the door frames of the container truck, the plurality of Bluetooth antenna devices arranged on the door frame sense the generated by the safe. Bluetooth signals; and the number of the safes calculated by the terminal device based on the received Bluetooth signals. The cargo monitoring method according to item 24 of the scope of the patent application, further includes: obtaining information of the number of the safes from the terminal device through an electronic device via a Bluetooth network. The cargo monitoring method according to item 26 of the scope of patent application, further comprising: activating the Bluetooth network by connecting the electronic device to the terminal device through a connector. The cargo monitoring method according to item 24 of the scope of patent application, further includes: pre-storing a road information through the terminal device. The cargo monitoring system according to item 28 of the patent application scope further includes: updating the road information by the terminal device according to information provided by a server. According to the cargo monitoring method described in item 28 of the scope of patent application, the method further includes: using the terminal device to generate a notification message according to the current position, speed, and road information of the container truck to determine whether to limit the speed of the container truck. . The cargo monitoring method according to item 24 of the scope of patent application, wherein the safe information includes a temperature information, a humidity information, and a vibration information. According to the cargo monitoring method described in item 31 of the scope of patent application, the method further includes: using the terminal device to generate a notification message according to the vibration information of the safe box to determine whether to limit the speed of the container truck. The cargo monitoring method according to item 24 of the scope of patent application, wherein each of the above safes corresponds to a different Media Access Control Address. The cargo monitoring method according to item 24 of the scope of patent application, further comprising: displaying the safe information of the safe by the terminal device. The cargo monitoring method according to item 24 of the scope of patent application, further comprising: when one of the frequency bands supported by the cable is less than a Bluetooth band, performing a Bluetooth signal before transmitting the Bluetooth signal through the cable. Frequency reduction operation; and when the frequency-reduced Bluetooth signal is to be transmitted to the terminal device, a frequency-up operation is performed on the frequency-reduced Bluetooth signal to restore the Bluetooth signal back. A cargo monitoring method applicable to a terminal device of a container truck, comprising: connecting a plurality of Bluetooth antenna devices through a cable to receive the Bluetooth from the cable from one or more safes placed in the container truck; One of the safe information provided by the signal; and monitoring the safe with the safe information. The cargo monitoring method according to item 36 of the scope of patent application, further comprising: when the safe is passing through a door frame of the container truck, calculating the number of the safes based on the Bluetooth signal sensed by the Bluetooth antenna device. The cargo monitoring method described in item 36 of the patent application scope further includes: pre-storing a road information. The cargo monitoring method according to item 38 of the scope of patent application, further comprising: updating the above road information according to information provided by a server. The cargo monitoring method described in item 38 of the scope of patent application, further includes: generating a notification message according to the current position, speed, and road information of the container truck to determine whether to limit the speed of the container truck. According to the cargo monitoring method described in item 40 of the scope of patent application, the method further comprises: generating a notification message according to the vibration information of one of the safes to determine whether to limit the speed of the container truck. The cargo monitoring method described in item 40 of the scope of patent application, further includes: displaying the safe information of the above safe.