Flexible lock with logistics state information monitoring function

Abstract

According to the flexible lock with the logistics state information monitoring function, the lock body is installed on a logistics vehicle door or a cargo seal through the intelligent lock / electronic lead seal, the GPS module tracks the position and the driving route of cargoes in real time, and the sensor module detects the speed, the environment temperature and the vibration of the logistics vehicle and is connected with the MCU. The MCU communicates with a cloud platform through the wireless communication module, remote state monitoring of the logistics vehicle and verification and processing of locking and unlocking instructions are achieved, a communication quality detection module is arranged, the effectiveness and accuracy of communication data are measured through a comprehensive evaluation model, and a communication mode switching module is arranged. A GPRS mobile communication module of a wireless communication module and a Beidou satellite communication module are automatically switched, a transceiver power trigger regulation and control module is arranged, distance information between a logistics vehicle and a base station is calculated, an attenuation coefficient is adjusted in a direct proportion mode, corrected power consumption data are calculated through a divider, the power consumption data are subjected to three-level regulation and control on carrier waves of a transceiver, and the power consumption data are subjected to three-level regulation and control on the carrier waves of the transceiver. And the communication quality is adjusted.

Description

Technical Field

[0001] The present invention belongs to the technical field of logistics vehicles and locks, and in particular relates to a flexible lock with a logistics status information monitoring function. Background Art

[0002] With the rapid development of the logistics industry, the demand for the safety, timeliness and status monitoring of goods during transportation is increasing. Traditional locks mainly play an anti-theft role, while modern logistics not only require locks to have anti-theft functions, but also hope to be able to monitor the logistics status of goods in real time, such as location, temperature, vibration, etc., so as to deal with emergencies in a timely manner and ensure the safety of goods.

[0003] The existing logistics status monitoring smart locks / electronic seals integrate multiple advanced technologies such as GPS positioning technology, sensor technology, wireless communication technology, etc., which can monitor the logistics status of goods in real time and perform data analysis and management through the cloud platform, thus achieving efficient, convenient and safe logistics process. Whether it is status monitoring data or locking / unlocking instructions, the quality, security and stability of communication are crucial.

[0004] Therefore, the present invention provides a new solution to solve this problem. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a flexible lock with a logistics status information monitoring function. The communication comprehensive evaluation model detects the quality of communication, adopts GPRS mobile communication and Beidou satellite communication switching, and according to the communication distance with the base station, adopts a three-level control transceiver carrier to adjust the communication quality, thereby ensuring the quality, security and stability of communication.

[0006] The technical solution is to include a lock body, a GPS module, a sensor module, a wireless communication module, an MCU, and a cloud platform. The lock body is installed on the door of a logistics vehicle or the sealing part of the cargo through a smart lock / electronic seal, and is controlled by the MCU to execute locking and unlocking commands. The GPS module tracks the location and route of the goods in real time and is connected to the MCU; The sensor module detects the speed, ambient temperature, and vibration of the logistics vehicle and is connected to the MCU; The MCU communicates with the cloud platform through the wireless communication module to realize remote status monitoring of the logistics vehicle and verification and processing of locking and unlocking instructions; It also includes a communication quality detection module, a communication mode switching module, and a transceiver power trigger control module. The communication quality detection module measures the effectiveness and accuracy of communication data through a comprehensive evaluation model. The parameters include delay, frame error rate and frame leakage rate, signal strength, and the number of failures of the wireless communication module; The communication mode switching module automatically switches between the GPRS mobile communication module and the Beidou satellite communication module of the wireless communication module according to the communication quality detection module; The transceiver power trigger control module calculates the distance information between the logistics vehicle and the base station, adjusts the attenuation coefficient in direct proportion, and the divider calculates the corrected power consumption data. The power consumption data is used to control the carrier of the three-level transceiver, thereby adjusting the communication quality.

[0007] Preferably, the distance information is corrected by the speed of the logistics vehicle and the information sampling control time, and specifically, the positive or negative correction is controlled by the driving direction of the logistics vehicle.

[0008] The beneficial effects of the present invention are as follows: 1. The communication data: delay, frame error rate and frame leakage rate, signal strength, effectiveness and accuracy of the number of failures of the wireless communication module are measured through a comprehensive evaluation model. Specifically, the communication quality is divided into three levels: high, medium and low through indicator weight allocation, comprehensive evaluation score calculation and evaluation result determination. When the GPRS mobile communication of the wireless communication module is at a non-instantaneous low level or there is no signal, the MCU automatically switches to communicate through the Beidou satellite communication module. When the communication quality is at an instantaneous low level, the distance information between the logistics vehicle and the base station is calculated, the attenuation coefficient is adjusted in direct proportion, and the divider calculates the corrected power consumption data. The power consumption data is used to control the carrier of the three-level transceiver, thereby adjusting the communication quality. In this way, the comprehensive communication evaluation model detects the quality of communication, switches between GPRS mobile communication and Beidou satellite communication, and according to the communication distance with the base station, controls the carrier of the three-level transceiver, thereby adjusting the communication quality, thereby ensuring the quality, security and stability of communication. The verification and processing of locking and unlocking instructions combines the logistics vehicle status information and communication quality data, and uses data encryption and authentication to allow the execution of locking or unlocking instructions, which can ensure the legitimacy of locking or unlocking and the reliability of communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a module diagram of the present invention.

[0010] Figure 2 It is a circuit schematic diagram of the present invention.

[0011] Figure 3 It is a flow chart of the working steps of the communication quality detection module of the present invention.

[0012] Figure 4 It is a flow chart of the verification and processing steps of the locking and unlocking instructions of the present invention. DETAILED DESCRIPTION

[0013] The technical solutions of various embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0014] The following is in conjunction with the instruction manual Figures 1 to 4 , the specific implementation modes of the present invention are further described in detail.

[0015] A flexible lock with logistics status information monitoring function includes a lock body, a GPS module, a sensor module, a wireless communication module, an MCU, and a cloud platform. The lock body is installed on the door of a logistics vehicle or the sealing part of goods through a smart lock (based on cryptography technology, sending an unlocking signal through password verification. Common unlocking verification methods include swiping a card, entering a digital password, fingerprint, face recognition, or a dual verification method combining the two verification methods. The smart lock can be connected to the Internet, and the smart lock can be remotely controlled and controlled through mobile phones, computers and other devices, and the status of the smart lock can be monitored, realizing modern intelligent remote operation) / electronic seal (a plastic shell seal with an RFID wireless radio frequency identification technology chip, which is self-locking and anti-opening. It is disposable or reusable and has a unique code. It is usually sealed and unsealed by a smart handheld terminal with an RFID reader and writer in a contactless manner, and can be supplemented by computer software to complete data download and management). The smart lock / electronic seal on-site personnel interactively identify and compare the level with the verification data stored in the MCU. After the authentication is passed, the lock or unlock command is executed. The mobile phone APP request or the cloud platform sends the lock or unlock command to the MCU according to actual needs. According to the instruction content, MCU controls the smart lock / electronic seal actuator to execute the locking and unlocking instructions to complete the locking and unlocking operations; The GPS module tracks the location and route of the goods in real time and is connected to the MCU; The sensor module detects the speed, ambient temperature, and vibration of the logistics vehicle and is connected to the MCU. The speed is measured by a speed sensor, which is mainly used to measure the driving speed of the logistics vehicle in real time to ensure that the vehicle is driving within a safe speed range. It can also provide data support for the navigation system and vehicle operation status monitoring. The ambient temperature is measured by a temperature sensor, including the temperature outside the logistics vehicle compartment to ensure the safety of the logistics vehicle without burning hazards. In cold chain logistics vehicles, the ambient temperature inside the compartment must also be detected to ensure that the goods maintain an appropriate low-temperature environment during transportation. The vibration is measured by a vibration sensor, which is used to monitor the vibration of the logistics vehicle during driving, which helps to detect abnormal conditions of the vehicle or goods in a timely manner. Several sensors can be set for detection, and can be set to the smart lock / electronic seal to detect violent unlocking. MCU communicates with the cloud platform through the wireless communication module to realize remote status monitoring of logistics vehicles and verification and processing of locking and unlocking commands. The wireless communication module includes GPRS mobile communication and Beidou satellite communication. GPRS mobile communication is a high-speed, stable, reliable, and always-online transparent data transmission channel, but it relies on ground base stations, and the coverage range is limited by the base station layout and signal strength. Therefore, Beidou satellite communication is adopted, which has the characteristics of global coverage, low latency and high reliability. It is connected to the MCU through serial ports, SPI and other interfaces to realize data transmission and control. MCU is a single-chip microcomputer; Whether for status monitoring data or lock / unlock instructions, the quality, security and stability of communication are crucial. Therefore, a communication quality detection module, a communication mode switching module and a transceiver power trigger control module are set. The communication quality detection module measures the effectiveness and accuracy of communication data (GPRS mobile communication) through a comprehensive evaluation model. The parameters include delay, frame error rate and frame loss rate, signal strength, and the number of failures of the wireless communication module. It is specifically carried out through three steps: 1. Indicator weight allocation 2. Comprehensive evaluation score calculation 3. Evaluation result determination, dividing the communication quality into three levels: high, medium and low; The communication mode switching module is based on the three levels of high, medium and low communication quality divided by the communication quality detection module. When the GPRS mobile communication of the wireless communication module is at a non-instantaneous low level or no signal, the MCU automatically switches to communicate through the Beidou satellite communication module. When the communication quality is at an instantaneous low level, the transceiver power triggering control module is triggered to work; The transceiver power trigger control module calculates the distance information between the logistics vehicle and the base station, adjusts the attenuation coefficient in direct proportion, and the divider calculates the corrected power consumption data. The power consumption data is used to control the carrier of the three-level control transceiver, thereby adjusting the communication quality. In this way, the comprehensive communication evaluation model detects the quality of communication, switches between GPRS mobile communication and Beidou satellite communication, and according to the communication distance with the base station, controls the carrier of the three-level control transceiver, thereby adjusting the communication quality, thereby ensuring the quality, security and stability of communication.

[0016] On the basis of the above scheme, the distance information is corrected by the speed of the logistics vehicle and the information sampling control time. Specifically, the multiplier calculates the product of the speed of the logistics vehicle and the information sampling control time to calculate the distance. The distance is added to the inverting input terminal or the non-inverting input terminal of the operational amplifier AR1 under the control of the driving direction of the logistics vehicle for positive or negative correction. For example, when the driving direction of the logistics vehicle is opposite to the base station and the distance decreases, the switch K1 does not operate and is added to the inverting input terminal of the operational amplifier AR1. When the driving direction of the logistics vehicle is opposite to the base station and the distance increases, the switch K1 operates and is added to the non-inverting input terminal of the operational amplifier AR1.

[0017] On the basis of the above scheme, the transceiver power trigger control module receives the base station positioning information and the logistics vehicle location information, calculates the distance information between the logistics vehicle and the base station through the differential amplifier composed of the operational amplifier AR1 and the resistors R1-R3, adds it to the gate of the field effect transistor T1, adjusts the attenuation coefficient in direct proportion, and then enters the divider composed of the multiplier IC2, the operational amplifier AR2, the resistors R4, R5 and R8 to calculate the corrected power consumption data. The power consumption data is filtered, and the thyristor VTL1 is triggered to turn on, and the thyristor VTL2 is triggered to turn on. The communication carrier is connected to the collector of the transistors Q1, Q2 and Q3, and the other path is added to the base of the transistor Q1 through the diode D1, and then added to the base of the transistor Q2 through the voltage regulator Z2, and then It is added to the base of the transistor Q3 through the voltage regulator tube Z3, and the transistors Q1-Q3 are triggered to turn on step by step according to the size of the power consumption data, and then the carrier performs three-level frequency modulation, so as to adjust the carrier of the transceiver in three levels, and then adjust the communication quality. It includes resistors R1 and R2, one end of the resistor R1 is connected to the base station positioning information, one end of the resistor R2 is connected to the logistics vehicle location information, the other end of the resistor R1 is connected to the inverting input end of the operational amplifier AR1, the other end of the resistor R2 is respectively connected to one end of the resistor R3 and the inverting input end of the operational amplifier AR1, the output end of the operational amplifier AR1 is respectively connected to one end of the resistor R6 and the gate of the field effect tube T1, and the drain of the field effect tube T1 is respectively connected to the other end of the resistor R6, one end of the grounding capacitor C1, and the attenuator. Subtraction coefficient, the source of field effect tube T1 is connected to one end of resistor R7, the other end of resistor R7 is connected to one end of inductor L5, the other end of inductor L5 is connected to pin 2 of multiplier IC2, pin 3 of multiplier IC2 is connected to one end of resistor R5, the other end of resistor R5 is respectively connected to one end of resistor R4 and the inverting input end of operational amplifier AR2, the other end of resistor R4 is connected to power consumption data, the non-inverting input end of operational amplifier AR2 is connected to ground through resistor R8, the output end of operational amplifier AR2 is connected to one end of inductor L3, the other end of inductor L3 is respectively connected to one end of resistor R11, one end of capacitor C2, and one end of resistor R10, the other end of resistor R10 is connected to the control electrode of thyristor VTL1, the other end of resistor R11 One end of the capacitor C2, the anode of the thyristor VTL1, and the positive electrode of the voltage regulator Z1 are respectively connected, the negative electrode of the voltage regulator Z1 is connected to the ground through the resistor R12, the cathode of the thyristor VTL1 is respectively connected to the positive electrode of the diode D1 and the control electrode of the thyristor VTL2, the cathode of the thyristor VTL2 is connected to the communication carrier through the resistor R9, the negative electrode of the diode D1 is connected to the base of the transistor Q1 and the negative electrode of the voltage regulator Z2, the collector of the transistor Q1, the collector of the transistor Q2, and the collector of the transistor Q3 are connected to one end of the resistor R13, the other end of the resistor R13 is connected to the anode of the thyristor VTL2, the emitter of the transistor Q1 is respectively connected to one end of the resistor R14, the positive electrode of the voltage regulator Z2 is connected to the negative electrode of the voltage regulator Z3 and the base of the transistor Q2,The other end of the resistor R14 is connected to the primary frequency modulation circuit of the transceiver carrier through the diode D2, the emitter of the transistor Q2 is connected to one end of the resistor R15, the positive electrode of the voltage regulator tube Z3 is connected to the base of the transistor Q3, the other end of the resistor R15 is connected to the secondary frequency modulation circuit of the transceiver carrier through the diode D3, the emitter of the transistor Q3 is connected to one end of the resistor R16, and the other end of the resistor R16 is connected to the secondary frequency modulation circuit of the transceiver carrier through the diode D4.

[0018] On the basis of the above scheme, the distance information is corrected by the speed of the logistics vehicle and the information sampling control time. The multiplier IC1 calculates the product of the speed of the logistics vehicle and the information sampling control time to calculate the distance. The distance is added to the inverting input terminal or the non-inverting input terminal of the operational amplifier AR1 under the control of the driving direction of the logistics vehicle for positive or negative correction. For example, when the driving direction of the logistics vehicle is opposite to the base station and the distance is reduced, the switch K1 does not operate and is added to the inverting input terminal of the operational amplifier AR1. When the driving direction of the logistics vehicle is opposite to the base station and the distance increases, the switch K1 operates and is added to the non-inverting input terminal of the operational amplifier AR1. It includes a resistor R18 and a capacitor C3, one end of the resistor R18 is connected to the information sampling control time, one end of the capacitor C3 is connected to the logistics vehicle speed information, the other end of the resistor R18 is respectively connected to one end of the grounded capacitor C5 and one end of the resistor R19, the other end of the resistor R19 is connected to pin 6 of the multiplier IC1, the other end of the capacitor C3 is respectively connected to one end of the grounded resistor R20 and one end of the capacitor C4, the other end of the capacitor C4 is connected to pin 1 of the multiplier IC1, pins 7-10 of the multiplier IC1 are connected to the ground, pin 2 of the multiplier IC1 is connected to the power supply +15V, pin 5 of the multiplier IC1 is connected to the power supply -15V, pin 4 of the multiplier IC1 is connected to the upper end of the potentiometer RP1 and the common end of the switch K1, the lower end of the potentiometer RP1 is connected to the ground, pin 3 of the multiplier IC1 is connected to the adjustable end of the potentiometer RP1, the normally closed contact of the switch K1 is connected to the inverting input end of the operational amplifier AR1, and the normally open contact of the switch K1 is connected to the non-inverting input end of the operational amplifier AR1.

[0019] On the basis of the above scheme, the communication quality detection module measures the effectiveness and accuracy of the communication data through a comprehensive evaluation model, and the parameters include delay, frame error rate and frame leakage rate, signal strength, and the specific steps of the number of failures of the wireless communication module are as follows: Step 1: indicator weight allocation: According to the influence of each parameter on the communication quality, a weight is assigned to each parameter: the weights of signal strength, delay, frame error rate and frame leakage rate, and number of failures can be 0.3, 0.25, 0.15, and 0.3 respectively; Step 2, calculation of comprehensive evaluation score: Each parameter is quantified and scored. Signal strength, latency, frame error rate, frame drop rate, and number of failures are divided into three levels: high, medium, and low, with different scores corresponding to each level. Latency, frame error rate, and frame drop rate can be divided into three levels: acceptable, critical, and unacceptable, with different scores corresponding to each level. According to the weights and quantitative scores, the comprehensive evaluation score is calculated. The comprehensive evaluation score = signal strength score × signal strength weight + delay score × delay weight + frame error rate and frame loss rate score × frame error rate and frame loss rate weight + fault number score × fault number weight; Step 3: Determine the evaluation results: Based on the comprehensive evaluation score, the communication quality is divided into five levels: excellent, good, average, poor and bad. A comprehensive evaluation score of 90 points or above is excellent, 80-89 points is good, 70-79 points is average, 60-69 points is poor, and below 60 points is poor.

[0020] Based on the above solution, the specific steps of verifying and processing the lock and unlock instructions are as follows: Step 1: The on-site personnel of the smart lock / electronic seal interactively identify and compare the level with the internally stored verification data. If the authentication is passed, the lock or unlock command is executed. The mobile phone APP requests or the cloud platform sends the lock or unlock command to the MCU according to actual needs; Step 2, obtain the logistics vehicle status information; Step 3: Extract irregular or abnormal situations during the logistics process; Step 4, obtaining communication quality data; Step 4: The authentication results are compared with the unconventional or abnormal situations; Step 5: After authentication is passed, the lock or unlock command is executed. After the operation is completed, the feedback is stored; If the command is wrong or times out, it is judged as authentication failure and returned. The authentication result is combined with the communication quality data to decide whether to re-verify or force lock.

[0021] On the basis of the above scheme, when the MCU and the cloud platform communicate with each other to lock or unlock instructions, data encryption and authentication are used. For example, DSA can be used for encryption and Product Key can be used for authentication. If the authentication is passed, the lock or unlock instruction is allowed to be executed, ensuring the legitimacy of locking or unlocking and the reliability of communication.

[0022] When the present invention is used specifically, the lock body is installed on the door of a logistics vehicle or the sealing of goods through a smart lock / electronic seal. The on-site personnel of the smart lock / electronic seal interactively identify and compare the level with the verification data stored in the MCU. After the authentication is passed, the lock or unlock command is executed. The mobile phone APP requests or the cloud platform sends the lock or unlock command to the MCU according to actual needs. The MCU controls the smart lock / electronic seal actuator to execute the lock and unlock commands according to the command content to complete the lock and unlock operations. The GPS module tracks the location and route of the goods in real time and is connected to the MCU; The sensor module detects the speed, ambient temperature, and vibration of the logistics vehicle and is connected to the MCU. The MCU communicates with the cloud platform through the wireless communication module to realize remote status monitoring of the logistics vehicle and verification and processing of locking and unlocking commands. The wireless communication module includes GPRS mobile communication and Beidou satellite communication. Whether it is status monitoring data or locking / unlocking commands, the quality, security, and stability of communication are crucial. Therefore, a communication quality detection module, a communication mode switching module, and a transceiver power trigger control module are set. The communication quality detection module measures the effectiveness and accuracy of communication data (GPRS mobile communication) through a comprehensive evaluation model. The parameters include delay, frame error rate and frame leakage rate, signal strength, and the number of failures of the wireless communication module. It is specifically carried out in three steps: 1. Indicator weight allocation 2. Comprehensive evaluation score calculation 3. Evaluation result determination, dividing the communication quality into three levels: high, medium, and low; The communication mode switching module is based on the three levels of communication quality divided by the communication quality detection module: high, medium and low. When the GPRS mobile communication of the wireless communication module is at a non-instantaneous low level or there is no signal, the MCU automatically switches to communicate through the Beidou satellite communication module. When the communication quality is at an instantaneous low level, the transceiver power trigger control module is triggered to work; The transceiver power trigger control module calculates the distance information between the logistics vehicle and the base station, adjusts the attenuation coefficient in direct proportion, and the divider calculates the corrected power consumption data. The power consumption data is used to control the carrier of the three-level control transceiver, and then adjust the communication quality. In this way, the communication comprehensive evaluation model detects the quality of communication, adopts GPRS mobile communication and Beidou satellite communication switching, and according to the communication distance with the base station, controls the carrier of the three-level control transceiver, and then adjusts the communication quality, which can ensure the quality, security, reliability and stability of communication; The verification and processing of locking and unlocking instructions are as follows: the on-site personnel of the smart lock / electronic seal interactively identify and compare the level with the internally stored verification data. If the authentication is passed, the locking or unlocking instruction is executed. The mobile phone APP requests or the cloud platform sends the locking or unlocking instruction to the MCU according to actual needs; obtain the logistics vehicle status information; extract the unconventional or abnormal situation of the logistics vehicle on the way; obtain the communication quality data; the authentication result is combined with the unconventional or abnormal situation for upgrading the level comparison; if the authentication is passed, the locking or unlocking instruction is executed, and the feedback is stored after the operation is completed; If the command is wrong or timed out, it is judged as authentication failure and returned. The authentication result is combined with the communication quality data to decide whether to re-verify or force lock to ensure the legitimacy of locking or unlocking; When the MCU and the cloud platform communicate with each other to lock or unlock instructions, data encryption and authentication are used. If the authentication is passed, the lock or unlock instruction is allowed to be executed, further ensuring the legitimacy of the lock or unlock and the reliability of the communication.

Claims

1. A flexible lock with logistics status information monitoring function, characterized in that: It includes a lock body, a GPS module, a sensor module, a wireless communication module, an MCU, and a cloud platform. The lock body is installed on the door of a logistics vehicle or the sealing part of the cargo through a smart lock / electronic seal, and is controlled by the MCU to execute locking and unlocking commands; The GPS module tracks the location and route of the goods in real time and is connected to the MCU; The sensor module detects the speed, ambient temperature, and vibration of the logistics vehicle and is connected to the MCU; The MCU communicates with the cloud platform through the wireless communication module to realize remote status monitoring of the logistics vehicle and verification and processing of locking and unlocking instructions; It also includes a communication quality detection module, a communication mode switching module, and a transceiver power trigger control module. The communication quality detection module measures the effectiveness and accuracy of communication data through a comprehensive evaluation model. The parameters include delay, frame error rate and frame leakage rate, signal strength, and the number of failures of the wireless communication module; The communication mode switching module automatically switches between the GPRS mobile communication module and the Beidou satellite communication module of the wireless communication module according to the communication quality detection module; The transceiver power trigger control module calculates the distance information between the logistics vehicle and the base station, adjusts the attenuation coefficient in direct proportion, and the divider calculates the corrected power consumption data. The power consumption data is used to control the carrier of the three-level transceiver, thereby adjusting the communication quality.

2. The flexible lock with logistics status information monitoring function according to claim 1 is characterized in that: The distance information is corrected by the speed of the logistics vehicle and the information sampling control time, and specifically the positive or negative correction is controlled by the driving direction of the logistics vehicle.

3. The flexible lock with logistics status information monitoring function according to claim 1 is characterized in that: The transceiver power trigger control module includes a resistor R1 and a resistor R2, one end of the resistor R1 is connected to the base station positioning information, one end of the resistor R2 is connected to the logistics vehicle position information, the other end of the resistor R1 is connected to the inverting input end of the operational amplifier AR1, the other end of the resistor R2 is respectively connected to one end of the resistor R3 and the inverting input end of the operational amplifier AR1, the output end of the operational amplifier AR1 is respectively connected to one end of the resistor R6 and the gate of the field effect tube T1, the drain of the field effect tube T1 is respectively connected to the other end of the resistor R6, one end of the grounding capacitor C1, and the attenuation coefficient, and the source of the field effect tube T1 is connected to one end of the resistor R7 , the other end of the resistor R7 is connected to one end of the inductor L5, the other end of the inductor L5 is connected to pin 2 of the multiplier IC2, the pin 3 of the multiplier IC2 is connected to one end of the resistor R5, the other end of the resistor R5 is respectively connected to one end of the resistor R4 and the inverting input end of the operational amplifier AR2, the other end of the resistor R4 is connected to the power consumption data, the non-inverting input end of the operational amplifier AR2 is connected to the ground through the resistor R8, the output end of the operational amplifier AR2 is connected to one end of the inductor L3, the other end of the inductor L3 is respectively connected to one end of the resistor R11, one end of the capacitor C2, and one end of the resistor R10, the other end of the resistor R10 is connected to the thyristor The control electrode of the transistor VTL1, the other end of the resistor R11 is respectively connected to one end of the capacitor C2, the anode of the thyristor VTL1, and the positive electrode of the voltage regulator Z1, the negative electrode of the voltage regulator Z1 is connected to the ground through the resistor R12, the cathode of the thyristor VTL1 is respectively connected to the positive electrode of the diode D1 and the control electrode of the thyristor VTL2, the cathode of the thyristor VTL2 is connected to the communication carrier through the resistor R9, the negative electrode of the diode D1 is connected to the base of the transistor Q1 and the negative electrode of the voltage regulator Z2, the collector of the transistor Q1, the collector of the transistor Q2, and the collector of the transistor Q3 are connected to one end of the resistor R13, and the other end of the resistor R13 is connected The anode of the thyristor VTL2 and the emitter of the transistor Q1 are respectively connected to one end of the resistor R14, the positive electrode of the voltage regulator tube Z2 is connected to the negative electrode of the voltage regulator tube Z3 and the base of the transistor Q2, the other end of the resistor R14 is connected to the primary frequency modulation circuit of the transceiver carrier through the diode D2, the emitter of the transistor Q2 is connected to one end of the resistor R15, the positive electrode of the voltage regulator tube Z3 is connected to the base of the transistor Q3, the other end of the resistor R15 is connected to the secondary frequency modulation circuit of the transceiver carrier through the diode D3, the emitter of the transistor Q3 is connected to one end of the resistor R16, and the other end of the resistor R16 is connected to the secondary frequency modulation circuit of the transceiver carrier through the diode D4.

4. The flexible lock with logistics status information monitoring function according to claim 2 is characterized in that: The distance information is corrected by the speed of the logistics vehicle and the information sampling control time, including a resistor R18 and a capacitor C3, one end of the resistor R18 is connected to the information sampling control time, one end of the capacitor C3 is connected to the logistics vehicle speed information, the other end of the resistor R18 is respectively connected to one end of the grounded capacitor C5 and one end of the resistor R19, the other end of the resistor R19 is connected to the pin 6 of the multiplier IC1, the other end of the capacitor C3 is respectively connected to one end of the grounded resistor R20 and one end of the capacitor C4, the other end of the capacitor C4 is connected to the pin 6 of the multiplier IC1 Pin 1, Pin 7-Pin 10 of the multiplier IC1 are connected to ground, Pin 2 of the multiplier IC1 is connected to the power supply +15V, Pin 5 of the multiplier IC1 is connected to the power supply -15V, Pin 4 of the multiplier IC1 is connected to the upper end of the potentiometer RP1 and the common end of the switch K1, the lower end of the potentiometer RP1 is connected to ground, Pin 3 of the multiplier IC1 is connected to the adjustable end of the potentiometer RP1, the normally closed contact of the switch K1 is connected to the inverting input end of the operational amplifier AR1, and the normally open contact of the switch K1 is connected to the non-inverting input end of the operational amplifier AR1.

5. The flexible lock with logistics status information monitoring function according to claim 1 is characterized in that: The communication quality detection module measures the effectiveness and accuracy of communication data through a comprehensive evaluation model, and the parameters include delay, frame error rate and frame leakage rate, signal strength, and the number of failures of the wireless communication module. The specific steps are: Step 1: indicator weight allocation: According to the influence of each parameter on the communication quality, a weight is assigned to each parameter: the weights of signal strength, delay, frame error rate and frame leakage rate, and number of failures can be 0.3, 0.25, 0.15, and 0.3 respectively; Step 2, calculation of comprehensive evaluation score: Each parameter is quantified and scored. Signal strength, latency, frame error rate, frame drop rate, and number of failures are divided into three levels: high, medium, and low, with different scores corresponding to each level. Latency, frame error rate, and frame drop rate can be divided into three levels: acceptable, critical, and unacceptable, with different scores corresponding to each level. According to the weights and quantitative scores, the comprehensive evaluation score is calculated. The comprehensive evaluation score = signal strength score × signal strength weight + delay score × delay weight + frame error rate and frame loss rate score × frame error rate and frame loss rate weight + fault number score × fault number weight; Step 3: Determine the evaluation results: Based on the comprehensive evaluation score, the communication quality is divided into five levels: excellent, good, average, poor and bad. A comprehensive evaluation score of 90 points or above is excellent, 80-89 points is good, 70-79 points is average, 60-69 points is poor, and below 60 points is poor.

6. The flexible lock with logistics status information monitoring function according to claim 1 is characterized in that: The specific steps of verifying and processing the locking and unlocking instructions are as follows: Step 1: The on-site personnel of the smart lock / electronic seal interactively identify and compare the level with the verification data stored in the MCU. If the authentication is passed, the lock or unlock command is executed. The mobile phone APP requests or the cloud platform sends the lock or unlock command to the MCU according to actual needs; Step 2, and obtain the logistics vehicle status information; Step 3: Extract irregular or abnormal situations during the logistics process; Step 4, obtaining communication quality data; Step 4: The authentication results are compared with the unconventional or abnormal situations; Step 5: After authentication is passed, the lock or unlock command is executed. After the operation is completed, the feedback is stored; If the command is wrong or times out, it is judged as authentication failure and returned. The authentication result is combined with the communication quality data to decide whether to re-verify or force lock.

7. The flexible lock with logistics status information monitoring function according to claim 6 is characterized in that: When the MCU and the cloud platform communicate with each other to lock or unlock instructions, data encryption and authentication are used. If the authentication is passed, the locking or unlocking instruction is allowed to be executed.

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