Container information acquisition and identification device

Abstract

The utility model belongs to the technical field of container transportation informatization equipment, and particularly relates to a container information acquisition and identification device. A container information acquisition and identification device comprises a host, a temperature and humidity sensor and an electromagnetic sensor. The host is fixed on a container body of the container and is electrically connected with the temperature and humidity sensor and the electromagnetic sensor through cables; the server is used for storing material information, processing signals transmitted by the temperature and humidity sensor and the electromagnetic sensor and storing the signals as data of temperature, humidity and container door opening counting; the temperature and humidity sensor is mounted in the container; the electromagnetic sensor is installed at the position of the container cabin door. The utility model aims to solve the problems that the information management of materials in the existing container is time-consuming, labor-consuming and error-prone, and the information of internal environment monitoring, transportation safety and the like cannot be acquired and recorded.

Description

Technical Field

[0001] The utility model belongs to the technical field of container transportation information equipment, and more specifically, relates to a container information collection and identification device. Background Art

[0002] Container transportation is one of the most common logistics methods, ranging from small vans to large ocean containers. The management of materials within containers is crucial in the logistics industry. This requires managing the material information within each container, including name, type, quantity, weight, and specifications. Managing the material within each container becomes extremely complex when there are a large number of containers. Currently, physical labels are commonly used to label the key information of the container's contents. These labels typically take the form of metal or plastic nameplates, which can be read directly from the outside of the container.

[0003] However, these labels are typically fixed to the exterior of the container, subjecting it to the elements and the inevitable impact of bumps and bruises during transport. This can lead to wear, loss, corrosion, and contamination, complicating management. Furthermore, when shipping a large number of containers, manually recording this information is time-consuming, labor-intensive, and prone to errors. When transporting delicate equipment or sensitive materials, the safety of the materials can be impacted by environmental factors such as temperature and humidity inside the container, accidents such as bumps and falls during transport, and whether the hatch has been forced open. However, physical nameplates cannot capture information about the container's internal environment or the smoothness of the transport, making it difficult to record and monitor the entire transport process.

[0004] To address these issues, a container information collection and identification device is urgently needed. This device, utilizing electronic information technology, specifically electronic tags, can rapidly store, read, and update information related to the container's contents in real time. It can also collect and record data such as the container's internal environment, transport stability, and hatch opening movements. This device addresses existing issues with container internal information management, which is time-consuming, labor-intensive, and prone to errors, as well as the inability to collect and record information such as internal environmental monitoring and transport safety. Utility Model Content

[0005] The utility model provides a container information collection and identification device, which uses radio frequency technology to receive or send material information and store the material information in the device. It also uses sensors such as temperature, humidity, acceleration and electromagnetic sensors to collect real-time information about the container's internal environment, transportation stability and safety, and stores it in the device; and displays the stored information on the screen; managers can also read and write data with the device through external radio frequency access equipment, thereby obtaining information about the container's internal materials (or writing material information), environmental information, transportation process, etc. The utility model aims to solve the problems of existing information management of materials inside containers, which is time-consuming, labor-intensive and prone to errors, and the inability to collect and record information such as internal environment monitoring and transportation safety. The specific contents are as follows:

[0006] A container information collection and identification device includes a host, a temperature and humidity sensor, and an electromagnetic sensor;

[0007] The host is fixed to the outside of the container and is electrically connected to the temperature and humidity sensor and the electromagnetic sensor respectively; the host is used to store material information, and process the signals transmitted by the temperature and humidity sensor and the electromagnetic sensor, and store them as temperature data, humidity data, and data on the time and number of times the container door is opened;

[0008] The temperature and humidity sensor is installed inside the container;

[0009] The electromagnetic sensor is installed at the position of the container hatch.

[0010] Furthermore, the electromagnetic sensor includes an electromagnetic sensor body and a magnet part, wherein the electromagnetic sensor body is installed at the door leaf of the container hatch; the magnet part is installed at the door frame of the container hatch and is installed opposite to the electromagnetic sensor body.

[0011] Furthermore, the host includes a radio frequency module encapsulated inside the host; the radio frequency module is used to store the container data, material data, temperature data, humidity data, and data on the container door opening time and number of times, and to sense each other with an external radio frequency access device to transmit and receive data.

[0012] Furthermore, the host also includes an acceleration sensor encapsulated inside the host; the acceleration sensor is used to collect impact signals received by the container.

[0013] Furthermore, the host also includes an alarm module arranged on the end surface of the host; the alarm module is used to send a warning signal to the outside world.

[0014] Furthermore, the host also includes a control module; the control module is electrically connected to the radio frequency module, the acceleration sensor, the temperature and humidity sensor, the electromagnetic sensor and the alarm module through cables; the control module is used to control the radio frequency module and the external radio frequency access device to transmit and receive data through radio frequency signals, and to convert the received signals transmitted by the radio frequency module, acceleration sensor, temperature and humidity sensor and electromagnetic sensor into digital information after processing and store them, and to control the alarm module to send a warning signal to the outside world.

[0015] Furthermore, the control module includes a low-power MCU and a storage chip; the MCU has a main frequency set to 90 MHz and an operating mode set to a shutdown mode; the storage chip is used to store the temperature data, the humidity data, the container door opening time and number of times, and the impact acceleration data received by the container.

[0016] Furthermore, the host also includes a screen; the screen is an electronic ink screen, fixedly mounted on the end surface of the control module and electrically connected to the control module, for displaying plain text information and a composite QR code;

[0017] The plaintext information includes transportation scenario plaintext information and custody scenario plaintext information;

[0018] The composite two-dimensional code is formed by the fusion of the QR code and the Longbei code.

[0019] Furthermore, the host also includes a battery encapsulated inside the host and a power switch arranged on one side of the host shell; the battery has a capacity of 20Wh to 30Wh and the number is 4 to 6.

[0020] Furthermore, the host further comprises a housing and a protective component; the housing is arranged at the rear end of the host and is fixedly connected to the protective component arranged at the front end of the host;

[0021] The device further comprises a mounting bracket fixed on the container body; the host is detachably fixed on the mounting bracket.

[0022] The beneficial effects of the utility model are as follows:

[0023] 1. Using electronic information technology, material information is stored in the host of the container information collection and identification device in the form of data, which can effectively avoid the problem of physical nameplate wear and loss caused by the container being exposed to wind, sun, bumps and collisions during transportation, which makes it inconvenient to query;

[0024] 2. Install a temperature and humidity sensor inside the container and connect it to the host device. This can collect real-time temperature and humidity information inside the container and store it in the host device. This facilitates monitoring the internal environment of the container and prevents damage to internal materials, especially delicate and sensitive materials.

[0025] 3. Installing electromagnetic sensors at the container hatch can monitor the number of times the hatch is opened, which is conducive to recording the storage and access of materials;

[0026] 4. An acceleration sensor is installed inside the main machine to detect the impact of the container during transportation, which is beneficial for subsequent regulatory inquiries. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a schematic diagram of the overall structure of the container information collection and identification device;

[0029] Figure 2 This is a schematic diagram of the composition of the container information collection and identification device;

[0030] Figure 3 This is an exploded schematic diagram of the overall structure of the container information collection and identification device;

[0031] Figure 4 This is a schematic diagram of the mounting bracket structure of the container information collection and identification device;

[0032] In the figure: 1. Main unit; 101. RF module; 102. Alarm module; 103. Control module; 104. Screen; 105. Battery; 106. Power switch; 107. Charging port; 108. Sensor connector; 109. Housing; 110. Top cover; 111. Screen protector; 112. Tempered glass cover; 113. Cover holder; 2. Temperature and humidity sensor; 3. Electromagnetic sensor body; 4. Mounting bracket. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] It should be noted that when an element is referred to as being "fixed to," "disposed on," "provided with," "equipped with," "disposed on," or "connected to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0036] It should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0037] Please refer to Figures 1 to 4 In order to better understand the specific structure of the utility model, a container information collection and identification device, such as Figures 1 to 3 As shown, it includes a host 1, a temperature and humidity sensor 2 and an electromagnetic sensor;

[0038] The host 1 is fixed to the outside of the container and is electrically connected to the temperature and humidity sensor 2 and the electromagnetic sensor respectively; the host 1 is used to store material information and process the signals transmitted by the temperature and humidity sensor 2 and the electromagnetic sensor, and store them as temperature data, humidity data, and data on the time and number of times the container door is opened;

[0039] The temperature and humidity sensor 2 is installed inside the container;

[0040] The electromagnetic sensor is installed at the position of the container hatch.

[0041] The electromagnetic sensor includes an electromagnetic sensor body 3 and a magnetic part. The electromagnetic sensor body 3 is installed at the door leaf of the container door; the magnetic part is installed at the door frame of the container door and is installed opposite to the electromagnetic sensor body 3.

[0042] It should be noted that the host 1 is arranged outside the container body, and is preferably detachably fixed to the body by screws or rivets, so that the administrator can read relevant data outside the container; the electrical connection between the host 1 and various sensors and components is preferably connected by cables, and the signal transmission is more stable; one end of the cable can pass through the through hole opened on the body to the inside of the container to connect to each sensor, and the other end is connected to the inside of the host 1 through the sensor connector 108 on the end face of the host 1 shell 109.

[0043] It should be noted that the material information stored in the host 1 includes but is not limited to the material's name, model, quantity, batch, entry and exit time, etc. More material information can be compiled according to specific needs.

[0044] It should be noted that the temperature and humidity sensor 2 is a device capable of measuring ambient temperature and humidity, typically consisting of a temperature sensor and a humidity sensor. The temperature sensor is primarily used to measure ambient temperature, while the humidity sensor is used to measure ambient humidity. Both sensors convert the measured temperature and humidity into electrical signals through internal circuits and chips, which are then output to an external display device or control device. The temperature and humidity sensor 2 employs either the resistance principle or the capacitance principle, respectively. In the resistance principle, the temperature sensor typically uses a thermistor material. When the temperature changes, the thermistor's resistance value also changes accordingly. The humidity sensor, on the other hand, uses a humidity-sensitive resistor. When the humidity changes, the humidity-sensitive resistor's resistance value also changes accordingly. By measuring this change in resistance, the ambient temperature and humidity information can be obtained. In the capacitance principle, the temperature and humidity sensor 2 typically uses a capacitive sensor, whose capacitance value changes with changes in the ambient temperature and humidity. By measuring this change in capacitance, the ambient temperature and humidity information can be obtained.

[0045] In this application, a capacitive temperature and humidity sensor 2 with high accuracy and stability is preferably used; and the sensor is fixed inside the container; the current temperature and humidity information is set to be collected and recorded every 10 minutes; the preferred temperature and humidity sensor 2 has a measured working temperature range of -41°C to 80°C, and the mass production of equipment products requires low-temperature screening. The temperature accuracy specification is within -20°C to 80°C, with an error of no more than ±0.5°C, and below -20°C, the maximum error is ±1°C; at 25°C, the humidity error does not exceed ±5%RH within the measurement range of 5% to 95%; the temperature and humidity sensor 2 can meet the technical index requirements of "working temperature: -41°C to +55°C", "working humidity: 5%RH to 95%RH (25°C)", and "sensor accuracy: temperature accuracy ±0.5 (25°C), humidity accuracy ±5%RH (25°C)"; the actual selection is a temperature and humidity composite sensor with a calibrated digital signal output, and the application of dedicated digital module acquisition technology and temperature and humidity sensor 2 technology to ensure that the product has extremely high reliability and excellent long-term stability. The sensor outputs a calibrated digital signal. Equipped with a newly designed dedicated chip, an improved semiconductor capacitive humidity sensor element, and a standard on-chip temperature sensor, its performance reaches advanced levels. The improved next-generation temperature and humidity sensor2 provides more stable performance in harsh environments and maintains good accuracy over a wide measurement range, making it an excellent choice for a wide range of applications, even the most demanding ones.

[0046] It should be noted that the electromagnetic sensor, also known as the hatch door switch sensor, is used to monitor the switch status information of the container hatch door. When the hatch door switch status changes, the hatch door switch sensor collects and stores the current door switch status in an interrupt manner.

[0047] The working principle of the hatch door switch sensor can be simply explained as attracting when approaching and cutting off when moving away; the hatch door switch sensor (Magnetic Door Sensor), also known as a door magnetic switch, is a device used to detect the open and closed status of a door; it uses changes in the magnetic field to monitor the opening and closing actions of the door and converts the results into electrical signals; the hatch door switch sensor usually consists of a magnetic part (magnetic part) and a magnetic sensing part (electromagnetic sensor body 3); the magnetic part is usually fixed to the door frame, and it contains a magnetic material (such as a permanent magnet or soft iron) and a magnet in contact with it; the magnetic sensing part is usually fixed to the door leaf, and it contains a magnetic switch (such as a reed switch or a Hall sensor); when the door is in the closed state, the distance between the magnetic part and the magnetic sensing part is very close, and the magnetic switch is closed by the induction of the magnetic part; at this time, the hatch door switch sensor outputs a signal indicating that the door is closed; when the door is opened, the distance between the magnetic part and the magnetic sensing part increases, causing the magnetic switch to be disconnected; at this time, the hatch door switch sensor outputs a signal indicating that the door is open.

[0048] The door switch sensor used in this application has an identification distance of less than 85mm; it meets the design indicator that the sensor's minimum door opening distance of 85mm is judged as the door open state; the proximity switch generates a magnetic field around the sensor through changes in the position and polarity of the trigger, causing the sensor contacts to move; it adopts a sealed design with a life of more than 1 million times, is easy to install, and can be adjusted according to different application environments; main features: no standby power supply required, good airtightness, and long service life; multiple magnetic field sensitivity ranges, can be equipped with a magnetic trigger; has high stability, high reliability, and high consistency.

[0049] In specific implementation, the container information collection and identification device uses electronic information technology to store material information in the form of data in the host 1 of the container information collection and identification device, which can effectively avoid the problem of wear and loss of physical nameplates due to wind, sun, bumps and collisions during transportation of the container, which is inconvenient for inquiry; a temperature and humidity sensor 2 is installed in the container and connected to the host 1 of the device, which can collect the temperature and humidity information inside the container in real time and store it in the host 1; it is convenient to monitor the internal environment of the container to prevent damage to internal materials, especially precision and sensitive materials; an electromagnetic sensor is installed at the container door to monitor the number of times the door is opened, which is conducive to recording the storage and access of materials.

[0050] According to the embodiment provided by this application, Figure 2 、 Figure 3 As shown, the host 1 includes a radio frequency module 101 encapsulated inside the host 1; the radio frequency module 101 is used to store the container data, material data, temperature data, humidity data, and data on the container door opening time and number of times, and to sense each other with an external radio frequency access device to transmit and receive data.

[0051] It should be noted that the radio frequency module 101 (i.e., electronic tag) in this application adopts radio frequency electronic tag (RFID) technology; this technology is a non-contact automatic identification technology that automatically identifies the target and obtains relevant data through radio frequency signals. The identification work does not require human intervention and can work in various harsh environments.

[0052] It should be noted that the container information includes but is not limited to the container's size, weight, and container code.

[0053] In specific implementation, staff can use a handheld external radio frequency access device to transmit information to the radio frequency module 101 in a contactless manner, including reading and writing material data from the electronic tag. Compared with traditional physical nameplates, this method has the advantages of being less prone to wear and loss, easier to query, and able to be read and written repeatedly.

[0054] In one embodiment, the host 1 further includes an acceleration sensor (not shown in the figure) encapsulated inside the host 1; the acceleration sensor is used to collect impact signals received by the container.

[0055] It should be noted that an accelerometer is a sensor that can measure the acceleration of an object; its working principle is based on Newton's second law, that is, the mass of an object multiplied by the acceleration equals the force applied to the object; the sensor calculates acceleration by measuring the force on the object or the pressure acting on the object; generally speaking, an accelerometer consists of a mass block, a spring and a capacitor; when the sensor is subjected to the acceleration of the object, the mass will move and the spring will expand and contract accordingly; this movement will cause the capacitance to change, and then cause the voltage of the sensor to change; by measuring the changed voltage, the value of acceleration can be calculated; specifically, the mass inside the accelerometer is connected to the spring to form a vibration system. When an object is subjected to acceleration, the mass will vibrate and the spring will also change accordingly. At the same time, the plates of the capacitor will also be affected by the vibration, causing the capacitance value of the capacitor to change. The sensor determines the magnitude of the acceleration by measuring the change in capacitance value. This is usually achieved through a bridge circuit or a Hall effect circuit. In a bridge circuit, the sensor is used as part of a bridge, and the magnitude of the acceleration is determined by measuring the change in the equilibrium point of the bridge. The Hall effect circuit uses the Hall effect to calculate the value of the acceleration by measuring the change in the magnetic field. In general, the acceleration sensor calculates the acceleration by measuring the change in force or pressure on the object. By adopting different measurement methods, such as bridge circuits or Hall effect circuits, accurate measurement of acceleration can be achieved.

[0056] The acceleration sensor in this application is configured to send a signal in an interrupt manner when the acceleration exceeds a set threshold value, and record and store the signal.

[0057] This application preferably uses the DA217 sensor chip, which has a maximum measurement range of ±16g and can meet the indicator requirement of "sensor accuracy: acceleration range ±8g"; the sensor is an ultra-low power capacitive three-axis linear accelerometer developed using micro-machining technology; a 2×2×0.9mm ground grid array is used to ensure operation over a wide temperature range; the sensor element is made of single crystal silicon, using a drying process and protected by a sealed silicon cap to prevent it from being affected by the environment; it has a user-selectable measurement range of ±2g / ±4g / ±8g / ±16g, a data output rate of 1Hz to 500Hz, and has signal conditioning, temperature compensation, motion detection, step counter and step detection functions; the DA217 has an integrated 32-level first-out buffer that allows users to store data to limit intervention by the host 1 processor; two independent and flexible interrupts are provided, which greatly simplifies various motion state detection algorithms.

[0058] It should be noted that the acceleration sensor is preferably fixed and packaged inside the main body by screws.

[0059] In specific implementation, an acceleration sensor is set in the device to monitor in real time the impact on the container or whether it has fallen; it is convenient to grasp the safety status of the materials and is conducive to subsequent regulatory inquiries.

[0060] According to the embodiment provided by this application, Figure 2 、 Figure 3 As shown, the host 1 further includes an alarm module 102 arranged on the end surface of the host 1; the alarm module 102 is used to send a warning signal to the outside world.

[0061] It should be noted that the alarm module 102 preferably includes an alarm light and an alarm speaker; when the temperature and humidity exceed the set value or the container is subjected to a large impact or falls, or the container door is accidentally opened, the alarm light can emit a flashing light and the alarm speaker can emit an alarm sound.

[0062] In specific implementations, when the internal temperature and humidity of the container exceed the set values, the container is impacted, falls, or the door is accidentally opened, the alarm module 102 can emit light and sound alarm signals, thereby increasing the safety of the materials in the container.

[0063] In one embodiment, Figure 2 、 Figure 3 As shown, the host 1 also includes a control module 103; the control module 103 is electrically connected to the RF module 101, the acceleration sensor, the temperature and humidity sensor 2, the electromagnetic sensor and the alarm module 102 through cables; the control module 103 is used to control the RF module 101 and the external RF access device to transmit and receive data through RF signals, and to convert the received signals transmitted by the RF module 101, the acceleration sensor, the temperature and humidity sensor 2 and the electromagnetic sensor into digital information after processing and store them, and to control the alarm module 102 to send a warning signal to the outside world.

[0064] The control module 103 includes a low-power MCU and a storage chip; the MCU has a main frequency set to 90 MHz and an operating mode set to a shutdown mode; the storage chip is used to store the temperature data, the humidity data, the container door opening time and number of times, and the impact acceleration data of the container.

[0065] It should be noted that the control module 103 preferably uses a low-power, high-performance MCU (Microprogrammed Control Unit). (ARM International Technology Co., Ltd.) The Cortex-M4 32-bit RISC CPU (a CPU type) is a high-performance MCU with a maximum operating frequency of 180MHz. The Cortex-M4 (the latest embedded processor developed by ARM) core integrates a floating-point unit (FPU) and DSP (Digital Signal Processing), enabling single-precision floating-point arithmetic and supporting all ARM single-precision data processing instructions and data types, as well as the complete DSP instruction set. The core also integrates an MPU (Microprocessor Unit) and a dedicated DMAC (Direct Memory Access Channel) to ensure system security. It also supports a wide voltage range (1.8-3.6V) and multiple low-power modes. It can switch between ultra-high-speed (≤180MHz), high-speed (≤90MHz), and ultra-low-speed (≤8MHz) modes in both run and sleep modes. It supports fast wake-up from low-power mode, with wake-up from shutdown mode as fast as 2µs, meeting the low-power requirements of long-term standby operation for intelligent information tags in containerized units.

[0066] The MCU preferably used in this application has the following performance:

[0067] The maximum operating frequency is 240MHz, achieving a computing performance of 300DMIPS or 825Coremarks;

[0068] Built-in Flash Memory (flash memory) of up to 2MByte and SRAM (static random access memory) of up to 516KByte;

[0069] Low-power operation, peripheral functions can be independently turned off or on in three low-power modes: Sleep, Stop, and Powerdown modes; independent power supply supports ultra-low power consumption, 128Byte backup registers, and 4KByte backup SRAM.

[0070] It should be noted that the control module 103 has preset thresholds for temperature, humidity and impact acceleration; the temperature and humidity sensor 2 and the acceleration sensor transmit the collected temperature, humidity and impact acceleration signals to the control module 103 in real time; the control module 103 processes the above signals to obtain the values of temperature, humidity and acceleration, and compares these values with the above thresholds accordingly; when the threshold range is exceeded, the control module 103 sends an instruction to the alarm module 102 to send an alarm signal to the outside world, and records and stores the information of temperature, humidity and impact acceleration that exceeds the above threshold; when the container door is accidentally opened, for example, when the electromagnetic sensor is in a locked state and an external force destructively opens the door, the electromagnetic sensor will send a signal representing an accidental door opening to the control module 103; the control module 103 will send an instruction to the alarm module 102 to send an alarm signal to the outside world, and record and store the door opening information.

[0071] It should be noted that the control module 103 can record the signals transmitted in real time by the temperature and humidity sensor 2, the acceleration sensor and the electromagnetic sensor, and convert them into temperature, humidity, acceleration and the number of door openings and store them.

[0072] It should be noted that the control module 103 can control the RF module 101 to transmit RF signals to the outside world; when the staff holds an external RF access device close to the RF module 101, the above-mentioned various information stored in the control module 103 can be read; the staff can also write the information in the handheld external RF access device into the control module 103 through the RF module 101 and store it.

[0073] In a specific implementation, the container information collection and identification device is provided with a control module 103, which can collect and store temperature, humidity, acceleration and door opening information in real time, facilitates the management of materials, improves the supervision of containers during transportation, and is more conducive to the safety of materials.

[0074] In the embodiment provided in this application, Figure 2 、 Figure 3 As shown, the host 1 further includes a screen 104; the screen 104 is an electronic ink screen, fixedly mounted on the end surface of the control module 103 and electrically connected to the control module 103, for displaying plain text information and a composite QR code;

[0075] The plaintext information includes transportation scenario plaintext information and custody scenario plaintext information;

[0076] The composite two-dimensional code is formed by the fusion of the QR code and the Longbei code.

[0077] It should be noted that the screen 104 can display various types of information stored in the control module 103 and can generate a composite QR code for external devices to scan and read the information; the electronic ink screen has the following advantages:

[0078] 1. Low power consumption. The screen 104 consumes power only when performing operations such as turning pages. If the displayed content is not refreshed, the image on the display can be retained even if the power is turned off.

[0079] 2. Ultra-thin, usually with a thickness of only about 1.2 mm. The thinner the screen 104 is, the thinner the container information collection and identification device can be.

[0080] 3. Visible under strong light: The black-and-white contrast of the electronic ink screen is very high, so it is still clearly visible under strong light. It is even clearer in places with strong light, making it convenient to view content in open air venues.

[0081] 4. No flicker, no radiation, and wide viewing angle.

[0082] It should be noted that this device includes four storage media: a radio frequency module 101, a storage chip, a QR code, and a Longbei code; the contents stored in these storage media are not the same, and the function of storing different contents in different storage media can be achieved by using conventional software configuration operations according to specific needs. The storage content of the radio frequency module 101 must be read and written through an external radio frequency access device; the storage content of the storage chip is relatively comprehensive and can be read and written through the charging interface on the host 1 using an encryption device (to prevent information leakage, which is a conventional technology in this field); the QR code and the Longbei code are merged into a composite QR code. The QR code is used to store transportation scene data, namely logistics flow information. These data are public and do not involve confidential information related to materials, which facilitates management during transportation; the Longbei code is used to store custody scene data, including container material information and receiving unit information. These data are confidential data and are used for material storage and management; the composite QR code must be read and written through a dedicated QR code reading and writing device. The QR code reading and writing device can read the data stored in the QR code and the Longbei code, but only after authorization or entering a password can the Longbei code data be read, otherwise only the public information of the QR code can be read. The reading and writing device is a conventional device and is not restricted here; two different reading and writing devices can also be used to read the data stored in the QR code and the Longbei code, where the Longbei code reading device is set as a dedicated encryption device. The contents stored in the four storage media of the radio frequency module 101, the memory chip, the QR two-dimensional code and the Longbei code are shown in Table 1. The contents stored in the memory chip include the storage contents of the radio frequency module 101, the QR two-dimensional code and the Longbei code.

[0083] Table 1 Classification of data storage of identification devices

[0084]

[0085]

[0086]

[0087] It should be noted that the composite QR code technology is used to solve the problem of ensuring the confidentiality of label content information in the material management link and the publicity of label content information in the logistics link during the logistics circulation process. It uses the independent and controllable Longbei code hierarchical authorization technology to develop a "one code multiple reading" QR code label.

[0088] In actual application, there is no need to replace equipment or upgrade software. The existing reading equipment used in logistics transportation can only read non-confidential information of logistics flow; the reading equipment used by confidential units can read all information of materials including information, batches, receiving units, etc. of confidential materials, realizing the sharing of a QR code label in logistics and material management.

[0089] It should be noted that composite QR code technology is an existing technology and is not limited here. Other QR code forms can be used as long as the above functions can be achieved. Composite QR code technology refers to the combination of two or more QR code technologies to form a QR code with new characteristics. The implementation method of composite QR code is not simply to superimpose two QR code graphics, but to integrate the information carried by the two QR codes into a new QR code through specific algorithms and encoding rules. There are generally two ways to merge two QR codes:

[0090] One approach is to embed a QR code as a watermark into another QR code. For example, a smaller QR code (the watermarked QR code) can be embedded into a larger conventional QR code. This way, when scanning a conventional QR code, information from both the conventional QR code and the watermarked QR code can be obtained simultaneously. This method is difficult to implement, as it is necessary to ensure that the watermarked QR code does not interfere with the normal recognition and decoding of the conventional QR code.

[0091] Another approach is to create composite QR codes through software-level integration. For example, in the mobile payment field, an aggregate payment QR code combines the payment codes of multiple payment platforms into a single QR code. After scanning this QR code, users can follow the prompts to select the corresponding payment platform to complete the payment process. This method is relatively simple to implement, relying primarily on backend system support and the design of parsing logic.

[0092] In the specific implementation, a composite QR code is used to realize the sharing of a QR code label in the logistics and management links; it can solve the problem of ensuring the confidentiality of the label content information in the material management link and the publicity of the label content information in the logistics link during the material management and logistics circulation process. It avoids the risk of copyright use of the QR code system and reduces the investment in the cost of QR code reading equipment. At the same time, it facilitates the production and application of QR code labels, realizes the one-code-multiple-read feature, and improves the compatibility of the code system. In addition, this identification device uses a variety of storage media to facilitate the reading and writing of data, the methods are diverse and convenient, and the security of the data can be guaranteed. The advantage of using this method is that

[0093] In one embodiment, Figure 2 、 Figure 3 As shown, the host 1 further includes a battery 105 encapsulated inside the host 1 and a power switch 106 arranged on one side of the housing 109 of the host 1; the battery 105 has a capacity of 20Wh to 30Wh and is 4 to 6 in number.

[0094] It should be noted that the battery 105 is preferably a large-capacity rechargeable lithium battery 105 with a long standby time; a charging interface 107 for charging the battery 105 and transmitting information is also provided on the end surface of the main body shell 109.

[0095] It should be noted that, based on the actual needs of material transportation, the battery life of this device is determined to be 3 months or 90 days. Therefore, it is necessary to calculate the power consumption of the selected hardware of this device in order to confirm the selection of the capacity and number of batteries 105 and the determination of the MCU operating mode. The specific calculation method is as follows:

[0096] According to Joule's law and Ohm's law, the continuous operating time of the identification device is equal to the power supply of battery 105 divided by the average operating power consumption of the identification device. In other words, by determining the average power consumption of each component of the identification device in normal operating mode and ensuring that it can continuously operate for more than three months (calculated as 90 days), the capacity and number of batteries 105 can be determined.

[0097] The hardware electronic part of the identification device consists of a temperature and humidity sensor 2, an acceleration sensor, an electromagnetic sensor, an electronic ink screen, a radio frequency module 101, an MCU, and a memory chip. The power consumption of each component is as follows:

[0098] Calculation of average power consumption for temperature and humidity sensor 2: operating voltage: 3.3V, measurement current: 500μA, sleep current: 15μA, sampling period: 2 seconds. Based on the daily operating requirements of the identification device, assuming the identification device collects temperature and humidity values once every 10 minutes, with a total measurement time of 5 seconds per temperature and humidity collection, and the rest of the time spent in sleep mode, the estimated average daily operating power consumption is:

[0099] Average operating power consumption of temperature and humidity sensor 2 = acquisition power consumption * acquisition probability + standby power consumption * standby probability. Acquisition power consumption = supply voltage * acquisition current = 3.3V * 500μA = 1650μW

[0100] Standby power consumption = supply voltage * standby current = 3.3V * 15μA = 49.5μW

[0101] Average operating power consumption of temperature and humidity sensor 2 = 1650*5 / 600 + 49.5*595 / 600 = 49.1 μW

[0102] Calculation of the average power consumption of the accelerometer: Operating voltage: 3.3V, measurement current: 95μA (125Hz), sleep current: 1μA, SPI interface maximum frequency: 10MHz, sampling period: 2 seconds. Based on the daily operating requirements of the identification device, assuming that the accelerometer periodically wakes up and does not sleep, the estimated average daily operating power consumption is:

[0103] Average working power consumption of accelerometer = acquisition power consumption * acquisition probability + standby power consumption * standby probability

[0104] Collection power consumption = supply voltage * collection current = 3.3V * 96μA = 313.5μW

[0105] Average operating power consumption of the accelerometer = 313.5μW

[0106] Calculation of average power consumption of the door switch sensor, operating voltage: 3.3V.

[0107] When the magnet approaches electromagnetic sensor body 3, the magnetic switch in electromagnetic sensor body 3 closes, resulting in a voltage of GND. When the magnet moves away from electromagnetic sensor body 3, the magnetic switch opens, resulting in a voltage of VCC. Based on empirical values, the circuit resistance R1 is set to 10 kΩ. When the magnetic switch is closed, the circuit current consumed is I = VCC / 10. When VCC is 3.3 V, the current I = 0.33 mA (1.08 mW). When the magnetic switch is open, the current flowing through the circuit resistance R1 is negligible.

[0108] Based on the daily working requirements of the identification device, assuming that the container door is opened and closed once a day for 30 minutes each time, the average daily working power consumption of the electromagnetic sensor is estimated as follows:

[0109] Average working power consumption of electromagnetic sensor = acquisition power consumption * acquisition probability + standby power consumption * standby probability

[0110] Collection power consumption = supply voltage * collection current = 3.3V * 0.33mA = 1.08mW

[0111] Standby power consumption = supply voltage * standby current = 0μW

[0112] Average operating power consumption of electromagnetic sensor = 1.08*1 / 48 = 22.5μW

[0113] Average power consumption calculation for an E-Ink screen: Communication interface: SPI, operating voltage: 3.3V, refresh current: 10mA, refresh power consumption: 33mW, standby power consumption: 0.003mW (deep sleep mode), full refresh time: 3.5 seconds (at 23°C). Based on the daily operating requirements of the signage device, assuming the signage screen 104 is refreshed once daily for door opening and closing, once for the acceleration alarm, twice for the temperature alarm, and once for updating the screen 104 information, for a total of five full refreshes, the estimated daily operating power consumption of the screen 104 is:

[0114] Average working power consumption of screen 104 = screen 104 refresh power consumption * screen refresh probability + screen 104 standby power consumption * standby probability

[0115] It is known that: the screen 104 refresh power consumption = 33mW, the screen 104 standby power consumption = 0.003mW, the screen is refreshed 5 times a day, each refresh time is 3.5 seconds, and the total screen refresh time is 17.5 seconds per day. The average working power consumption of the screen 104 = 33mW*(17.5) / (24*3600)+0.003mW(24*3600-17.5) / (24*3600)=9.7μW

[0116] Calculation of average power consumption of RF module 101: operating voltage: 3.3V, tag standby current: 10μA (25°C), tag read / write current: 150μA (25°C), external interface: I2C bus (pull-up resistor 4.7KΩ), I2C bus rate: interface I2C bus maximum 400kHz, uplink data rate (identification device to external RF access device): 10k bits / s, downlink data rate (external RF access device to identification device): 32k bits / s. Based on the daily operating requirements of the identification device, assuming that the RF tag transmits an average of 2 times a day, each time reading and writing once, the data volume is based on the storage data of 121463 bytes in Table 1, and the effective data transmission rate is 20% off the minimum uplink and downlink rates, then the RF read / write power consumption = RF chip read / write power consumption + I2C bus read / write power.

[0117] Average working power consumption of RFID tags = RFID standby power consumption * standby probability + RFID read / write power consumption * read / write probability. It is known that:

[0118] RF standby power consumption = supply voltage * standby current = 3.3V * 10μA = 33μW;

[0119] RF chip read and write power consumption = supply voltage * read and write current = 3.3V * 150μA = 495μW

[0120] Communication transmission time = tag data required transmission capacity / effective transmission rate

[0121] =121463*8 / 10000*0.8=121 seconds

[0122] I2C bus read and write power = power supply voltage * power supply voltage / pull-up resistor * 2

[0123] =3.3*3.3 / 4700*2=4.634mW.

[0124] RF read / write power consumption = RF chip read / write power consumption + I2C bus read / write power consumption

[0125] =495μW+4.634mW=5.129mW

[0126] Average working power consumption of RFID tags = RFID standby power consumption * standby probability + RFID read / write power consumption * read / write probability

[0127] =33μW*(24*3600-121*4) / (24*3600)+5.129mW*(121*4) / (24*3600)=60.6μW

[0128] Calculation of average power consumption of the memory chip: Communication interface: SPI, transfer rate: 12MB / S (continuous transfer), operating voltage: 3.3V, operating current: read data (80MHz), maximum 18mA, write data, maximum read 25mA, typical 20mA, standby current: maximum 50μA, typical 6μA, power-down current: maximum 15μA, typical 1.5μA. Based on the daily operating requirements of the identification device, assuming that the read and write probability of the storage used during the operation of the RF module 101 is the same, the sensor collects data once every 10 minutes, and the data storage capacity required for each data collection of the identification device is 121,463 bytes according to "Table 1". Read and write storage can be completed within 1 second. Then:

[0129] Average storage working power consumption = storage read / write power consumption * read / write probability + storage standby power consumption * standby probability. It is known that:

[0130] Storage read and write power = (read data power + write data power) / 2 = (59.4 + 82.5) / 2 = 70.95mW Storage standby power = standby voltage * standby current = 3.3V * 50μA = 165μW

[0131] Average storage operating power consumption

[0132] =70.95mW*1 / (10*60+1)+165μW*10*60 / (10*60+1)=282.78μW

[0133] The average power consumption of the main MCU (Cortex-M4) is calculated. The MCU operating modes are shown in Table 2, Table 3, and Table 4.

[0134]

[0135] Table 4 MCU shutdown mode power consumption

[0136]

[0137] 1.Data based on characterization, tested in production.

[0138] According to the above operating mode and parameter power consumption table of the MCU, the maximum MCU main frequency is 180Mhz. In actual use, it is necessary to save power. At the same time, considering the computing performance, the frequency of 90Mhz (43mA) is selected as the main frequency of normal mode operation.

[0139] Frequency reduction mode: Current at various frequencies, the lowest frequency is 2MHz and the current consumption is 5mA (25℃).

[0140] Standby mode: Current in various situations. The minimum current in sleep mode is 4mA (25°C).

[0141] Stop mode: Current under various conditions. The minimum current in stop mode is 1mA (25°C).

[0142] Therefore, the low-power operation strategy of this identification device uses the shutdown mode calculation with a current of 1mA (25℃).

[0143] According to the daily working requirements of the identification device, it is assumed that the RF module 101 transmits an average of 2 times a day. According to the RF part, the working time each time is 121 seconds; the temperature and humidity are collected once every 10 minutes, and each working time is 5 seconds; the screen 104 is refreshed once a day when the door is opened and closed, the acceleration alarm is refreshed once, the temperature alarm is refreshed twice, and the screen 104 information is updated once, for a total of 5 full refreshes, each screen refresh time is 3.5 seconds, and the total working time per day is 17.5 seconds; the working time of other components has been completed when the screen 104 is refreshed and is no longer counted.

[0144] have to:

[0145] The normal operating time of the MCU per day is:

[0146] Normal mode running time = (60 / 10*24*5)+(121*2)+17.5=979.5S

[0147] The rest of the day is low-power operation time:

[0148] Low power consumption operation time = 3600*24-979.5 = 85420.5S

[0149] Average operating power consumption of the main control MCU = (normal mode power consumption × normal mode operating time + low power mode power consumption × low power mode operating time) / (total time)

[0150] Average operating power consumption of the main MCU

[0151] =(43mA×3.3V×979.5S+1mA×3.3V×85420.5S) / (86400S×1000)=0.00487128W

[0152] The average operating power consumption of the main MCU is approximately 0.00487128 watts (W), or 4.87 milliwatts (mW).

[0153] The average power consumption of the whole machine is calculated based on the average power consumption of the above components:

[0154] Average power consumption of main MCU in shutdown mode = 4.87mW

[0155] Average operating power consumption of temperature and humidity sensor 2 = 49.1 μW

[0156] Average operating power consumption of the accelerometer = 313.5μW

[0157] Average operating power consumption of electromagnetic sensor = 22.5μW

[0158] Average power consumption of ink screen = 9.7μW

[0159] Average operating power consumption of RF module 101 = 60.60 μW

[0160] Average storage operating power consumption = 282.78μW

[0161] That is: power consumption of other components (except MCU)

[0162] =49.1+313.5+22.5+9.7+60.6+282.78μW=0.738mW

[0163] Total: Average operating power consumption of the entire machine = 4.87mW + 0.738mW = 5.608mW

[0164] The continuous working time of the whole machine is calculated. According to the design index requirements, the continuous working time of the whole machine is not less than 3 months (calculated as 90 days). Due to the chemical properties of battery 105, the power of battery 105 cannot be completely exhausted (calculated as 80%), and the power supply voltage conversion efficiency problem (converted at 85%), here the power that can be used by the device during the entire working cycle is the total capacity of battery 105.

[0165] = Average power consumption of the whole machine * time (24*3*30) / (80*85)%

[0166] Battery 105 required capacity

[0167] =5.608mW*24*3*30 / (80*85)%≈5.608*3176.5mWh≈17.813Wh

[0168] If the capacity of battery 105 is 20Wh, then:

[0169] Continuous working time = 20Wh / 17.813Wh*90≈101 days

[0170] Therefore, the preferred capacity of the battery 105 of this identification device is 20Wh, which can ensure a continuous working time of 3 months (calculated as 90 days).

[0171] Battery 105 preferably has a nominal voltage of 3.7V, a capacity of 2500mAh, a charge cut-off voltage of 4.2V, a discharge cut-off voltage of 2.7V, and an initial built-in resistance of ≤50mΩ. It exhibits excellent high and low temperature discharge characteristics, discharging to 2.5V at 0.2C for more than 210 minutes at -40±2°C. It also exhibits excellent safety characteristics, passing overcharge, over-discharge, short-circuit, and thermal shock tests without emitting fire or smoke. This identification device preferably utilizes four batteries 105 connected in parallel to meet the device's battery life requirements.

[0172] In a specific implementation, the large-capacity rechargeable lithium battery 105 provides the device with a long standby time, providing a basis for sustainable use during long-distance transportation; the power switch 106 can be controlled by staff to reduce energy consumption when not in use.

[0173] In the embodiment provided in this application, Figure 3 As shown, the host 1 further includes a housing 109 and a protective component; the housing 109 is arranged at the rear end of the host 1 and is fixedly connected to the protective component arranged at the front end of the host 1;

[0174] like Figure 4 As shown, the device further includes a mounting bracket 4 fixed on the container body; the host 1 is detachably fixed on the mounting bracket 4.

[0175] It should be noted that the shell 109 is preferably formed in one piece using 6063 aluminum profile, which has the advantages of being sturdy, airtight, and having strong bearing capacity; the shell 109 is box-shaped and can provide space for accommodating the control module 103, the battery 105 described below, the acceleration sensor and the radio frequency module 101.

[0176] It should be noted that the protective assembly is arranged at the front end of the host 1 and is used to protect the screen 104 and the entire body from external environmental damage such as impact, wear and corrosion; it mainly includes a screen protection pad 111, an upper cover 110, a tempered glass cover 112 and a cover holder 113;

[0177] The screen protection pad 111 is preferably made of EVA material and is adhered to the periphery of the screen 104 to play a shock-absorbing role and prevent the screen 104 from being damaged by a large impact;

[0178] The upper cover 110 is press-fitted onto the front end of the screen protector 111. A through hole corresponding to the size of the screen 104 is provided at the position corresponding to the screen 104. The upper cover 110 is fixed to the housing 109 by screws or rivets on all sides, forming a sealed space with the housing 109. A sealing ring is bonded to the four edges of the upper cover 110 where it contacts the housing 109 to provide a seal. The upper cover 110 is preferably made of 6063 aluminum profile.

[0179] The tempered glass cover 112 is bonded to the front end of the upper cover 110 at the position of the screen 104 and serves to protect the screen 104;

[0180] The cover plate holder 113 is arranged at the front end of the tempered glass cover plate 112 and is fixed to the front end of the upper cover 110 by screws; the cover plate holder 113 has a through hole corresponding to the position of the screen 104; the cover plate holder 113 is used to enhance the stability and reliability of the tempered glass cover plate 112.

[0181] It should be noted that the mounting bracket 4 is preferably fixed to the outside of the container body by screws or rivets.

[0182] In a specific implementation, the housing 109 and the protective assembly provide a closed, safe, and solid accommodation space for the host 1 , which can effectively prevent the host 1 from being damaged by external environmental influences such as impact, wear, and corrosion.

[0183] In this device, a mounting bracket 4 is added, which allows the device to be disassembled more conveniently, thereby facilitating the maintenance and replacement of the device.

[0184] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0185] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A container information collection and identification device, characterized in that: Including host, temperature and humidity sensor and electromagnetic sensor; The host is fixed to the outside of the container and includes a control module; the control module is electrically connected to the temperature and humidity sensor and the electromagnetic sensor via cables, and is used to store material information and process the signals transmitted by the temperature and humidity sensor and the electromagnetic sensor, and store them as temperature data, humidity data, and data on the time and number of times the container door is opened; The temperature and humidity sensor is installed inside the container; The electromagnetic sensor is installed at the position of the container hatch.

2. The container information collection and identification device according to claim 1, characterized in that: The electromagnetic sensor includes an electromagnetic sensor body and a magnet portion. The electromagnetic sensor body is installed at the door leaf of the container hatch; the magnet portion is installed at the door frame of the container hatch and is installed opposite to the electromagnetic sensor body.

3. The container information collection and identification device according to claim 1, characterized in that: The host includes a radio frequency module encapsulated inside the host; the radio frequency module is used to store the container data, material data, temperature data, humidity data, and data on the container door opening time and number of times, and to sense each other with an external radio frequency access device to transmit and receive data.

4. The container information collection and identification device according to claim 3, characterized in that: The host further includes an acceleration sensor encapsulated inside the host; the acceleration sensor is used to collect impact signals received by the container.

5. The container information collection and identification device according to claim 4, characterized in that: The host further comprises an alarm module arranged on the end face of the host; the alarm module is used to send a warning signal to the outside world.

6. The container information collection and identification device according to claim 5, characterized in that: The control module is electrically connected to the radio frequency module, the acceleration sensor and the alarm module through cables respectively; the control module is used to control the radio frequency module and the external radio frequency access device to transmit and receive data through radio frequency signals, and to convert the received signals transmitted by the radio frequency module, acceleration sensor, temperature and humidity sensor and electromagnetic sensor into digital information after processing and store them, and to control the alarm module to send a warning signal to the outside world.

7. The container information collection and identification device according to claim 6, characterized in that: The control module includes a low-power MCU and a storage chip; the MCU has a main frequency set to 90 MHz and an operating mode set to a shutdown mode; the storage chip is used to store the temperature data, the humidity data, the container door opening time and number of times, and the impact acceleration data of the container.

8. The container information collection and identification device according to claim 7, characterized in that: The host further includes a screen; the screen is an electronic ink screen, fixedly mounted on the end surface of the control module and electrically connected to the control module, for displaying a composite QR code; The composite two-dimensional code is formed by the fusion of QR code and Longbei code.

9. The container information collection and identification device according to claim 7, characterized in that: The host also includes a battery encapsulated inside the host and a power switch arranged on one side of the host shell; the battery has a capacity of 20Wh to 30Wh and is 4 to 6 in number.

10. The container information collection and identification device according to claim 7, characterized in that: The host further includes a housing and a protective assembly; the housing is arranged at the rear end of the host and is fixedly connected to the protective assembly arranged at the front end of the host; The device further comprises a mounting bracket fixed on the container body; the host is detachably fixed on the mounting bracket.

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