Container information acquisition and identification device

Abstract

The invention 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 invention aims to solve the problems that information management of materials in the container is time-consuming, labor-consuming and easy to make mistakes and information such as internal environment monitoring and transportation safety cannot be collected and recorded in the prior art.

Description

Technical Field

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

[0002] Container transportation is one of the most common logistics methods at present. From small box trucks to large shipping containers, all are transported by containers. In the logistics industry, the management of materials inside containers is crucial. It is necessary to manage the material information inside each container, including: name, type, quantity, weight, specifications, etc. When the number of containers is large, the material management of each container will become extremely cumbersome. At present, physical labels are usually used to mark the main information of the materials inside the container on the label. Such labels are generally in the form of metal or plastic nameplates, and managers can directly read the content on the nameplate from the outside of the container.

[0003] However, this type of label is usually fixed on the outer surface of the container. It is inevitable that it will experience wind, rain, bumps and collisions during transportation, which often causes nameplate wear, loss, corrosion, pollution, etc., which brings inconvenience to management work. When there are a large number of containers, manually recording this information one by one takes a lot of time and manpower and is prone to errors. When transporting precision equipment or sensitive materials, environmental factors such as temperature and humidity inside the container, accidents such as bumps and falls during transportation, and whether the hatch has been forced open will all affect the safety of the materials. However, the physical nameplate cannot obtain information about the internal environment of the container and the stability of transportation, so it is difficult to record and supervise the transportation process.

[0004] In view of the above problems, there is an urgent need for a container information collection and identification device that uses electronic information technology, namely electronic tags, to quickly store, read and update information related to materials inside the container, and can also collect and record data such as the internal environment of the container, transportation stability and hatch opening action in real time. This can solve the problem that the information management of materials inside the container is time-consuming, labor-intensive, and prone to errors, and that information such as internal environment monitoring and transportation safety cannot be collected and recorded. Summary of the invention

[0005] The present invention provides a container information collection and identification device, which uses radio frequency technology to receive or send material information, and stores the material information in the device, and uses sensors such as temperature, humidity, acceleration and electromagnetic sensors to collect real-time information about the internal environment of the container, transportation stability and safety, and store it in the device; and displays the stored information on the screen; managers can also read and write data with this device through external radio frequency access equipment, so as to obtain the internal container material information (or write material information), environmental information, transportation process and other contents; the present invention aims to solve the problems that the existing information management of internal container materials is time-consuming, labor-intensive and error-prone, and the internal environment monitoring, transportation safety and other information cannot be collected and recorded. The specific contents are as follows:

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

[0007] The host is fixed on 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 container door opening time and number of times;

[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, the electromagnetic sensor body is installed at the door leaf of the container door; the magnet part is installed at the door frame of the container door 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 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.

[0015] Furthermore, the control module includes a low-power MCU and a storage chip; the MCU has a main frequency set to 90Mhz and an operating mode set to a shutdown operating mode; the storage chip is used to store the temperature data, the humidity data, the container door opening time and number of times data, 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, and is used to display plain text information and a composite two-dimensional 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 a quantity of 4 to 6 batteries.

[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 also includes a mounting bracket fixed on the container body; the host is detachably fixed on the mounting bracket.

[0022] The beneficial effects of the present invention are as follows:

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

[0024] 2. Install a temperature and humidity sensor in the container and connect it to the host of the device. The temperature and humidity information inside the container can be collected in real time and stored in the host. This facilitates monitoring of the internal environment of the container and prevents damage to internal materials, especially precision 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 engine 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 drawings required for use in the description of the embodiments will be briefly introduced below. 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 It 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. host; 101. radio frequency module; 102. alarm module; 103. control module; 104. screen; 105. battery; 106. power switch; 107. charging interface; 108. sensor connector; 109. housing; 110. upper 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] It should be noted that when an element is referred to as being "fixed to", "placed on", "disposed with", "provided with", "set to", 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 at the same time.

[0036] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Please refer to Figure 1 to Figure 4 In order to better understand the specific structure of the present invention, a container information collection and identification device, such as Figure 1 to Figure 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 container door opening time and number of times;

[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 magnet part. The electromagnetic sensor body 3 is installed at the door leaf of the container door; the magnet 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 cable, 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, storage time, etc., and 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 that can measure the temperature and humidity of the environment, and is usually composed of a temperature sensor and a humidity sensor. The temperature sensor is mainly used to measure the temperature of the environment, and the humidity sensor is used to measure the humidity of the environment. These two sensors convert the measured temperature and humidity into electrical signals through internal circuits and chips, and then output them to external display devices or control devices; the temperature and humidity sensor 2 adopts the resistance principle and the capacitance principle respectively. In the resistance principle, the temperature sensor usually adopts thermistor materials. When the temperature changes, the resistance value of the thermistor will also change accordingly. The humidity sensor adopts a humidity resistor. When the humidity changes, the resistance value of the humidity resistor will also change accordingly. By measuring the change in resistance value, the temperature and humidity information of the environment can be obtained; in the capacitance principle, the temperature and humidity sensor 2 usually adopts a capacitive sensor, and the capacitance value of this sensor will change with the change of the ambient temperature and humidity. By measuring the change in capacitance value, the temperature and humidity information of the environment can be obtained.

[0045] In the present 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 every 10 minutes and recorded and stored; the preferred temperature and humidity sensor 2 has an actual 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, and the error does not exceed ±0.5°C. 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 dedicated digital module acquisition technology and temperature and humidity sensor 2 technology are applied to ensure that the product has extremely high reliability and excellent long-term stability. The sensor outputs a calibrated digital signal; it is equipped with a newly designed dedicated chip, an improved semiconductor capacitive humidity sensor element and a standard on-chip temperature sensor element, and its performance has reached the advanced level of the industry; the improved new generation temperature and humidity sensor 2 makes its performance more stable in harsh environments and maintains good accuracy over a large measurement range; making it the best choice for all types of applications, even the most demanding applications.

[0046] It should be noted that the electromagnetic sensor is also called the hatch door switch sensor, which 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 door switch sensor can be simply explained as attracting when approaching and cutting off when moving away; the door switch sensor (Magnetic Door Sensor), also known as a door magnetic switch, is a device used to detect the opening and closing 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 door switch sensor is usually composed of a magnetic part (magnetic part) and a magnetic sensing part (electromagnetic sensor body 3); the magnetic part is usually fixed on 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 on the door leaf, and it contains a magnetic switch (such as a reed switch or a Hall sensor); when the door is in a closed state, the distance between the magnetic part and the magnetic sensing part is very close, and the magnetic switch is closed due to the induction of the magnetic part; at this time, the door switch sensor outputs a signal indicating 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 door switch sensor outputs a signal indicating the door is open.

[0048] The identification distance of the hatch switch sensor used in this application is within 85mm; the design indicator that the sensor's minimum door opening distance is 85mm to be judged as the door open state is met; the proximity switch generates a magnetic field around the sensor through the change of the position and polarity of the trigger, causing the sensor contacts to move; the sealed design has 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 magnet 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 inconvenient query caused by wear and loss of physical nameplates due to wind, sun, bumps and collisions during transportation of the container; 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 implementation method 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 (ie, electronic tag) in the present 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 size, weight and container code of the container.

[0053] In specific implementation, the 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 the traditional physical nameplate, this method has the advantages of being not easy to wear and lose, easy to query, and can be read and written repeatedly.

[0054] In one embodiment, the host 1 further includes an acceleration sensor (not shown in the figure) packaged 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 is equal to 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 is composed 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, which in turn causes 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 the capacitance value. This is usually achieved through a bridge circuit or a Hall circuit. In the 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 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 the force or pressure on the object. By adopting different measurement methods, such as bridge circuits or Hall circuits, accurate measurement of acceleration can be achieved.

[0056] The acceleration sensor in the present application is configured to send a signal in an interrupt mode 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 micromechanical 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 a sealed silicon cap for protection, and is not 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 that 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 easy to grasp the safety status of the materials and is conducive to subsequent regulatory inquiries.

[0060] According to the implementation method 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, falls, etc., 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 a specific implementation, when the internal temperature and humidity of the container exceed the set value, the container is impacted, falls, or the door is accidentally opened, the alarm module 102 can send out light and sound alarm signals, thereby increasing the safety of the materials in the container.

[0063] In one embodiment, if 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 respectively; 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 90Mhz and an operation mode set to a shutdown operation mode; the storage chip is used to store the temperature data, the humidity data, the container door opening time and number of times data, 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) as a control component. (ARM International Technology Co., Ltd.) -M4 32-bit RISC CPU (a CPU model), a high-performance MCU with a maximum operating frequency of 180MHz. The Cortex-M4 (the latest embedded processor specially developed by ARM) core integrates a floating-point unit (FPU) and DSP (the abbreviation of Digital Signal Processing), implements single-precision floating-point arithmetic operations, supports all ARM single-precision data processing instructions and data types, and supports a complete DSP instruction set; the core integrates an MPU (the abbreviation of Microprocessor Unit) unit, and superimposes a DMAC (Direct Memory Access Channel) dedicated MPU unit to ensure the safety of system operation; it also supports a wide voltage range (1.8-3.6V) and multiple low-power modes. In the running mode and sleep mode, it can switch between ultra-high-speed mode (≤180MHz), high-speed mode (≤90MHz) and ultra-low-speed mode (≤8MHz); it supports fast wake-up from low-power mode, and the fastest wake-up from shutdown mode is 2us; it can meet the low-power requirements of long-term standby operation of intelligent information tags in container 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) up to 2MByte, SRAM (static random access memory) up to 516KByte;

[0069] Low power operation, peripheral functions can be independently turned off or on in three low power modes: Sleep, Stop, Powerdown mode; independent power supply supports ultra-low power consumption, 128Byte backup register, 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 two-dimensional 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 two-dimensional code for an external device 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 turning pages or performing other operations. If the displayed content is not refreshed, the image on the display screen 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 the present device includes four storage media, namely, 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 realized 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 two-dimensional code and the Longbei code are merged into a composite two-dimensional code, and 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 is convenient for 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 two-dimensional code must be read and written through a dedicated two-dimensional code reading and writing device, which can read the data stored in the QR two-dimensional code and the Longbei code, but can only read the data of the Longbei code after authorization or password input, otherwise only the public information of the QR code can be read. The reading and writing device is a conventional device and is not limited here; two different reading and writing devices can also be used to read the data stored in the QR two-dimensional code and the Longbei code, wherein 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 storage chip, the QR two-dimensional code and the Longbei code are shown in Table 1. The contents stored in the storage 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 both ensuring the confidentiality of label content information in the material management link and ensuring the publicity of label content information in the logistics link during the logistics circulation process. It uses the independently controllable Longbei code hierarchical authorization technology to develop a "one code, multiple readings" 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 features. The implementation method of composite QR code is not to simply 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 way is to embed a QR code as a watermark into another QR code. For example, a smaller QR code (watermark QR code) can be embedded into a larger regular QR code. In this way, when scanning a traditional QR code, the information in both the traditional QR code and the watermark QR code can be obtained at the same time. This method is difficult to implement, and it is necessary to ensure that the watermark QR code does not interfere with the normal recognition and decoding of the traditional QR code;

[0091] Another way is to realize composite QR code through software-level integration. For example, in the field of mobile payment, the aggregate payment QR code is to integrate the payment codes of multiple payment platforms into one QR code. After the user scans the QR code, he can select the corresponding payment platform according to the prompt to complete the payment process. The implementation of this method is relatively simple, mainly relying on the support of the backend system and the design of the 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 not only avoids the risk of copyright use of the QR code system, but also reduces the investment in the cost of QR code reading equipment. It also 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, the 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, if 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 a quantity of 4 to 6 batteries.

[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, according to the actual demand for 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 quantity of the battery 105 and the determination of the MCU working mode; the specific calculation method is as follows:

[0096] According to Joule's law and Ohm's law, the continuous working time of the identification device is equal to the power supply of the battery 105 divided by the average working power consumption of the identification device. That is, by determining the average power consumption of each component of the identification device in the daily working mode, and the continuous working time of more than 3 months (calculated as 90 days), the capacity and quantity of the battery 105 can be determined.

[0097] The electronic part of the hardware of the identification device is composed 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 storage chip. The power consumption of each proposed component is as follows:

[0098] Average power consumption calculation of temperature and humidity sensor 2: working voltage: 3.3V, measurement current: 500μA, sleep current: 15μA, sampling period: 2 seconds. According to the daily working requirements of the identification device, assuming that the identification device collects temperature and humidity values ​​once every 10 minutes, the temperature and humidity collection plus the measurement time totals 5 seconds, and the rest of the time is sleep, the average daily working power consumption is estimated as follows:

[0099] Average working 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 working power consumption of temperature and humidity sensor 2 = 1650*5 / 600+49.5*595 / 600 = 49.1μW

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

[0103] Average working power consumption of acceleration sensor = 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 power consumption of the accelerometer = 313.5 μW

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

[0107] When the magnet is close to the electromagnetic sensor body 3, the magnetic switch of the electromagnetic sensor body 3 is closed, and the voltage GND can be obtained at this time. When the magnet is away from the electromagnetic sensor body 3, the magnetic switch is disconnected, and the voltage VCC can be obtained at this time. According to the empirical value, the resistance value R1 in the circuit is taken as 10kΩ. When the magnetic switch is closed, the current I consumed by the circuit is VCC / 10. When VCC is 3.3V, the current I is 0.33mA (1.08mW). When the magnetic switch is disconnected, the current flowing through the resistance value R1 of the circuit can be ignored.

[0108] According to 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 = collection power consumption * collection probability + standby power consumption * standby probability

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

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

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

[0113] Average power consumption calculation of electronic ink screen, communication interface: SPI, working voltage: 3.3V, refresh current: 10mA, refresh power consumption: 33mW, standby power consumption: 0.003mW (deep sleep mode), full refresh time: 3.5 seconds (under 23°C). According to the daily working requirements of the identification device, it is assumed that the identification device 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; the estimated daily working 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: screen 104 refresh power consumption = 33mW, screen 104 standby power consumption = 0.003mW, screen refresh 5 times a day, each screen refresh time 3.5 seconds, total screen refresh 17.5 seconds a day. Screen 104 average working power consumption = 33mW*(17.5) / (24*3600)+0.003mW(24*3600-17.5) / (24*3600)=9.7μW

[0116] The average power consumption of the RF module 101 is calculated as follows: 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 up to 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. According to the daily working requirements of the identification device, it is assumed that the RF tag transmits twice a day on average, reads and writes once each time, and the data volume is 121463 bytes according to the storage data in Table 1. 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. The average working power consumption of the RF tag = RF standby power consumption * standby probability + RF read / write power consumption * read / write probability. It is known that:

[0117] RF standby power consumption = supply voltage * standby current = 3.3V * 10μA = 33μW;

[0118] RF chip read and write power consumption = supply voltage * read and write current = 3.3V * 150μA = 495μW

[0119] Communication transmission time = tag data required transmission capacity / effective transmission rate

[0120] =121463*8 / 10000*0.8=121 seconds

[0121] I2C bus read and write power = power supply voltage * power supply voltage / pull-up resistor * 2

[0122] =3.3*3.3 / 4700*2=4.634mW.

[0123] RF read / write power consumption = RF chip read / write power consumption + I2C bus read / write power consumption

[0124] =495μW+4.634mW=5.129mW

[0125] Average working power consumption of RF tag = RF standby power consumption * standby probability + RF read / write power consumption * read / write probability

[0126] =33μW*(24*3600-121*4) / (24*3600)+5.129mW*(121*4) / (24*3600)=60.6μW

[0127] Calculation of average power consumption of storage chip, communication interface: SPI, transmission rate: 12MB / S (continuous transmission), 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-off current: maximum 15μA, typical 1.5μA. According to the daily working requirements of the identification device, assuming that the read and write probabilities used for storage during the operation of the RF module 101 are the same, the sensor collects data once every 10 minutes, and the amount of data required to store each time the identification device collects data is stored according to "Table 1" 121463 bytes of data, and the read and write storage can be completed within 1 second, then:

[0128] Storage average working power consumption = storage read and write power consumption * read and write probability + storage standby power consumption * standby probability It is known that:

[0129] Storage read and write power = (read data power + write data power) / 2 = (59.4 + 82.5) / 2 = 70.95mW Storage standby power consumption = standby voltage * standby current = 3.3V * 50μA = 165μW

[0130] Average storage power consumption

[0131] =70.95mW*1 / (10*60+1)+165μW*10*60 / (10*60+1)=282.78μW

[0132] The average power consumption of the main MCU (Cortex-M4) is calculated, and the MCU operation modes are shown in Table 2, Table 3 and Table 4.

[0133]

[0134] Table 4 MCU shutdown mode power consumption

[0135]

[0136] Data based on characterization tested in production.

[0137] According to the above operating mode and parameter power consumption table of the MCU, the maximum main frequency of the MCU is 180Mhz. In actual use, power needs to be saved. Considering the computing performance at the same time, the frequency 90Mhz (43mA) is selected as the main frequency of normal mode operation.

[0138] Frequency reduction mode: current at various frequencies, the power consumption current at the lowest frequency of 2MHz is 5mA (25℃).

[0139] Standby mode: Current in various situations. The minimum current in sleep mode is 4mA (25℃).

[0140] Stop mode: The current in various situations. The minimum current in stop mode is 1mA (25℃).

[0141] Therefore, the low-power operation strategy of this identification device uses the shutdown mode calculation with a current of 1mA (25°C).

[0142] According to the daily working requirements of the identification device, it is assumed that the RF module 101 transmits twice a day on average, and calculated based on the RF part, each working 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 included.

[0143] have to:

[0144] The normal operating time of MCU per day is:

[0145] Normal mode running time = (60 / 10*24*5) + (121*2) + 17.5 = 979.5S

[0146] The rest of the day is low-power operation time:

[0147] Low power consumption operation time = 3600*24-979.5 = 85420.5S

[0148] 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)

[0149] Average operating power consumption of main control MCU

[0150] =(43mA×3.3V×979.5S+1mA×3.3V×85420.5S) / (86400S×1000)=0.00487128W

[0151] The average operating power consumption of the main MCU is approximately 0.00487128 watts (W), or 4.87 milliwatts (mW).

[0152] The average power consumption of the whole machine is calculated based on the average power consumption of the above components:

[0153] Average power consumption of main MCU in shutdown mode = 4.87mW

[0154] Temperature and humidity sensor 2 average operating power consumption = 49.1μW

[0155] Average power consumption of the accelerometer = 313.5 μW

[0156] Average power consumption of electromagnetic sensor = 22.5μW

[0157] Average power consumption of ink screen = 9.7μW

[0158] Average operating power consumption of RF module 101 = 60.60 μW

[0159] Storage average operating power consumption = 282.78μW

[0160] That is: power consumption of other components (except MCU)

[0161] =49.1+313.5+22.5+9.7+60.6+282.78μW=0.738mW

[0162] Total: Average power consumption of the whole machine = 4.87mW + 0.738mW = 5.608mW

[0163] 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 calculation formula of battery 105

[0164] = Average power consumption of the whole machine*time (24*3*30) / (80*85)%

[0165] Battery 105 required capacity

[0166] =5.608mW*24*3*30 / (80*85)%≈5.608*3176.5mWh≈17.813Wh

[0167] If the capacity of battery 105 is 20Wh, then:

[0168] Continuous working time = 20Wh / 17.813Wh*90≈101 days

[0169] Therefore, the preferred battery 105 capacity of the identification device is 20Wh, which can ensure a continuous working time of 3 months (calculated as 90 days).

[0170] The battery 105 preferably has a nominal voltage of 3.7V, a capacity of 2500mAh, a charging cut-off voltage of 4.2V, a discharging cut-off voltage of 2.7V, and an initial built-in resistance of ≤50mΩ. It has good high and low temperature discharge characteristics, and discharges to 2.5V at 0.2C for more than 210 minutes at -40±2℃. It has good safety characteristics, and will not catch fire or smoke during overcharge, overdischarge, short circuit test, and thermal shock. The identification device is preferably powered by 4 batteries 105 connected in parallel, which can meet the battery life requirements of the device.

[0171] 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 in long-distance transportation; the power switch 106 can be controlled by the staff to reduce energy consumption when not in use.

[0172] 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;

[0173] like Figure 4 As shown, the device further comprises a mounting bracket 4 fixed on the container body; the host 1 is detachably fixed on the mounting bracket 4 .

[0174] It should be noted that the shell 109 is preferably formed in one step using 6063 aluminum profile, which has the advantages of being sturdy, airtight, and having a strong load-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 RF module 101.

[0175] It should be noted that the protection component is arranged at the front end of the host 1, and is used to protect the screen 104 and the entire body from external environment damage such as impact, wear and corrosion; it mainly includes a screen protection pad 111, an upper cover 110, a tempered glass cover plate 112 and a cover plate holder 113;

[0176] The screen protection pad 111 is preferably made of EVA material and 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;

[0177] The upper cover 110 is pressed onto the front end of the screen protection pad 111, and a through hole having the same size as the screen 104 is opened 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, and forms a closed space with the housing 109; a sealing ring is bonded to the upper cover 110 at the position where it contacts the four sides of the housing 109 to play a sealing role; the upper cover 110 is preferably made of 6063 aluminum profile;

[0178] The tempered glass cover plate 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;

[0179] The cover plate holder 113 is arranged at the front end of the tempered glass cover plate 112 and 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.

[0180] It should be noted that the mounting bracket 4 is preferably fixed to the outside of the container body by screws or rivets.

[0181] 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 environments such as impact, wear, and corrosion.

[0182] In this device, a mounting bracket 4 is added, so that the device can be disassembled more conveniently, which is convenient for maintenance and replacement of the device.

[0183] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0184] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes 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 on 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 container door opening time and number of times; 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 comprises an electromagnetic sensor body and a magnet part. The electromagnetic sensor body is installed at the door leaf of the container door. The magnet part is installed at the door frame of the container door 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 also 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 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.

6. The container information collection and identification device according to claim 5, characterized in that: 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, the acceleration sensor, the temperature and humidity sensor and the 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 90Mhz and an operation mode set to a shutdown operation 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.

8. The container information collection and identification device according to claim 7, characterized in that: 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, and is used to display plain text information and a composite two-dimensional code; The plaintext information includes transportation scenario plaintext information and custody scenario plaintext information; The composite two-dimensional code is formed by the fusion of the QR code and the 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 a quantity of 4 to 6 batteries.

10. The container information collection and identification device according to claim 7, characterized in that: 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; The device also includes a mounting bracket fixed on the container body; the host is detachably fixed on the mounting bracket.

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